HomeMy WebLinkAboutCIRI-PAQ-CAEC Palmer Administration Office 2012-EEENERGY AUDIT FINAL REPORT
Palmer Administration Office
501 N. Gulkana Street
Palmer, AK 99645
p (907) 376-0806
AkWarm ID No. CIRI-PAQ-CAEC-02
800 F Street
Anchorage, AK 99501
p (907) 276-6664 f (907) 276-5042
Contact: Walter Heins, PE, CCP, CxA, CEA
32215 Lakefront Dr.
Soldotna, Alaska 99669
p (907) 260-5311
Contact: Jerry P. Herring, PE, CEA
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 i AkWarm No. CIRI-PAQ-CAEC-02
Contents
I. Executive Summary .................................................................................................................. 1
II. Introduction .............................................................................................................................. 5
III. Energy Audit Process ............................................................................................................. 6
IV. Method of Analysis ................................................................................................................. 7
V. Building Description ................................................................................................................ 8
V.I SCHOOL ARCHITECTURAL DESCRIPTION .............................................................................................................. 9
V.II MECHANICAL DESCRIPTION ............................................................................................................................. 10
V.III ELECTRICAL DESCRIPTION .............................................................................................................................. 11
V.IV OUTBUILDINGS DESCRIPTION .......................................................................................................................... 12
VI. Historic Energy Consumption and Cost............................................................................. 13
VI.I ELECTRICAL CONSUMPTION DATA ................................................................................................................... 13
VI.II NATURAL GAS CONSUMPTION DATA .............................................................................................................. 13
VI.III OVERALL ENERGY CONSUMPTION DATA ....................................................................................................... 13
VII. Equipment Inventory and Photo Survey .......................................................................... 15
VIII. Energy Conservation Measures ....................................................................................... 16
VIII.I OFFICE BUILDING ENERGY CONSERVATION MEASURES ................................................................................ 16
VIII.II IT SERVER PORTABLE BUILDING 81 ECMS .................................................................................................. 20
VIII.III DTC PORTABLE BUILDING ECMS ............................................................................................................... 21
VIII.IV ADMINISTRATIVE CONTROLS FOR ENERGY CONSERVATION AND OPTIMIZATION ....................................... 22
Appendices
Appendix A – Energy Benchmark Data
Appendix B – AkWarm Commercial Reports
Appendix C – Major Equipment List
Appendix D – Energy Conservation Measures – Palmer Administration Office
Appendix E – Energy Conservation Measures – IT Server Portable Building 81
Appendix F – Energy Conservation Measures – DTC Portable Building
Appendix G – Site Survey Photos
Appendix H – Thermographic Photos
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Abbreviations
AHFC Alaska Housing & Finance Corporation
ARRA American Recovery & Reinvestment Act
ASHRAE American Society of Heating, Refrigeration, and Air-Conditioning Engineers
BTU British Thermal Unit
CCF One Hundred Cubic Feet
CFM Cubic Feet per Minute
DDC Direct Digital Control
ECI Energy Cost Index
ECM Energy Conservation Measure
EPDM Ethylene Propylene Diene Monomer
EUI Energy Utilization Index
F Fahrenheit
HP horsepower
HPS High Pressure Sodium
HVAC Heating, Ventilating, and Air-Conditioning
in inch(es)
IPLC Integrated Power & Load Circuit
kWh kilowatt-hour
LED Light-Emitting Diode
MSBSD Matanuska-Susitna Borough School District
O&M Operations & Maintenance
sf square feet
SIR Savings-to-Investment Ratio
V Volts
W Watts
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List of Figures
Fig. 1 – Energy Audit Clients ....................................................................................................................... 1
Fig. 2 – Energy Benchmark Data .................................................................................................................. 1
Fig. 3 – Palmer, Alaska – Google Maps ....................................................................................................... 5
Fig. 4 – Palmer Administrative Office – Google Maps ................................................................................ 5
Fig. 5 – Palmer Administration Office .......................................................................................................... 8
List of Tables
Table 1 - Recommended Energy Conservation Measures, Palmer Administrative Office ........................... 2
Table 2 - Recommended Energy Conservation Measures, IT Server Portable Building 81 ......................... 4
Table 3 - Recommended Energy Conservation Measures, DTC Portable Building ..................................... 4
Table 4 - Building History ............................................................................................................................ 9
Table 5 - Energy Cost and Consumption Data ........................................................................................... 13
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REPORT DISCLAIMER
Privacy
The information contained within this report, including any attachment(s), was produced under contract to Alaska
Housing Finance Corporation (AHFC). IGAs are the property of the State of Alaska, and may be incorporated into
AkWarm-C, the Alaska Retrofit Information System (ARIS), or other state and/or public information systems.
AkWarm-C is a building energy modeling software developed under contract by AHFC.
Limitations of Study
This energy audit is intended to identify and recommend potential areas of energy savings, estimate the value of the
savings, and provide an opinion of the costs to implement the recommendations. This audit meets the criteria of a
Level 2 Investment Grade Audit (IGA) per the American Society of Heating, Refrigeration, Air-conditioning
Engineers (ASHRAE) and the Association of Energy Engineers (AEE), and is valid for one year. The life of the IGA
may be extended on a case-by-case basis, at the discretion of AHFC. In preparing this report, the preparers acted
with the standard of care prevalent in this region for this type of work. All results are dependent on the quality of
input data provided. Not all data could be verified and no destructive testing or investigations were undertaken.
Some data may have been incomplete.
This report is not intended to be a final design document. Any modifications or changes made to a building to realize
the savings must be designed and implemented by licensed, experienced professionals in their fields. Lighting
upgrades should undergo a thorough lighting analysis to assure that the upgrades will comply with State of Alaska
Statutes as well as Illuminating Engineering Society (IES) recommendations. All liabilities for upgrades, including
but not limited to safety, design, and performance are incumbent upon the professional(s) who prepare the design.
Coffman Engineers, Inc (CEI) and Central Alaska Engineering Company (CAEC) bear no responsibility for work
performed as a result of this report.
Financial ratios may vary from those forecasted due to the uncertainty of the final installed design, configuration,
equipment selected, installation costs, related additional work, or the operating schedules and maintenance provided
by the owner. Furthermore, many ECMs are interactive, so implementation of one ECM may impact the
performance of another ECM. CEI and CAEC accept no liability for financial loss due to ECMs that fail to meet the
forecasted financial ratios.
The economic analyses for the ECMs relating to lighting improvements are based solely on energy savings.
Additional benefits may be realized in reduced maintenance cost, deferred maintenance, and improved lighting
quality. The new generation lighting systems have significantly longer life leading to long term labor savings,
especially in high areas like Gyms and exterior parking lots. Lighting upgrades displace re-lamping costs for any
fixtures whose lamps would otherwise be nearing the end of their lifecycle. This reduces maintenance costs for 3-7
years after the upgrade. An overall improvement in lighting quality, quantified by numerous studies, improves the
performance of students and workers in the built environment. New lighting systems can be designed to address all
of the above benefits.
US Government Disclaimer:
This material is based upon work supported by the Department of Energy under Award Number DE-EE0000095.
This report was prepared as an account of work sponsored by an agency of the United States Government. Neither
the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or
implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any
information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned
rights. Reference herein to any specific commercial product, process, or service by trade name, trademark,
manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring
by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not
necessarily state or reflect those of the United States Government or any agency thereof.
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I. Executive Summary
This report presents the findings of an energy audit conducted at the Palmer Administration Office as part
of a contract for:
Alaska Housing Finance Corporation
Contact: Rebekah Luhrs
4300 Boniface Parkway
Anchorage, AK 99510
Email: rluhrs@ahfc.us
Matanuska-Susitna Borough School District
Contact: Rick Jensen
501 N Gulkana Street
Palmer, AK 99645
Email: ricky.jensen@matsuk12.us
Fig. 1 – Energy Audit Clients
This audit was performed using American Recovery and Reinvestment Act (ARRA) funds to promote the
use of innovation and technology to solve energy and environmental problems in a way that improves the
State of Alaska’s economy. This can be achieved through the wiser and more efficient use of energy.
The average January 2009-December 2010 documented annual utility costs at this facility are as follows:
Electricity $ 90,908
Natural Gas $ 35,042
Total $125,950
January 2009-December 2010 Energy Utilization Index (EUI) = 135.6 kBtu/sf
January 2009-December 2010 Energy Cost Index = 2.70 $/sf
Fig. 2 – Energy Benchmark Data
Energy Conservation Measures (ECMs) calculated to be cost effective are shown below in the Executive
Summary Table with the energy analyst’s best opinion of probable cost, savings, and investment returns.
Be aware that the measures are not additive because of the interrelation of several of the measures. The
cost of each measure for this level of auditing is ± 30% until detailed engineering, specifications, and hard
proposals are obtained. See section VIII for detailed descriptions of all cost effective ECMs.
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Table 1 - Recommended Energy Conservation Measures, Palmer Administrative Office
Executive Summary – Recommended ECMs
Palmer Administrative Office (PAO)
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
PAO-0a Refrigerators Replace residential & light
commercial
refrigerators/freezers older
than 5 years old
-- - <10
PAO -1 Setback
Thermostat:
Office
Building
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for
the office building.
$5,333 $2,000 34.43 0.4
PAO-2 Upgrade
Motors
Repair Burnout Motors on
AHU-1 through AHU-5
with NEMA Premium
Efficiency Motors
$1,811 $3,950 2.84 2.2
PAO-2 Lighting:
Staff Rooms
Replace the T12 light
fixtures with T8 fixtures
and install occupancy
sensors for control.
$339 $2,350 2.11 6.9
PAO-4 Ventilation Install CO2 Sensors $1,763 $12,000 1.89 6.8
PAO-5 Lighting:
Conference
Rooms
Replace the T12 light
fixtures with T8 fixtures
and install occupancy
sensors for control.
$1,194 $11,400 1.53 9.5
PAO-6 Lighting:
Small
Offices
Replace T12 light fixtures
with T8 fixtures, replace
incandescent lamps, and
install new occupancy
sensors.
$3,648 $39,200 1.35 10.7
PAO-7 Lighting:
Exterior
Replace the building
mounted High Pressure
Sodium light fixtures with
LED fixtures
$569 $7,700 1.08 13.5
PAO-8 Lighting:
Corridor
Replace the T12 light
fixtures with T8 fixtures
$332 $4,600 1.06 13.9
PAO-9 Lighting:
Restrooms
Replace the T12 light
fixtures with T8 fixtures
and install occupancy
sensors for control.
$339 $5,650 1.03 14.2
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Executive Summary – Recommended ECMs
Palmer Administrative Office (PAO)
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
PAO-10 Lighting:
Large
Offices
Replace the T12 light
fixtures with T8 fixtures
$3,178 $45,500 1.03 14.3
PAO-11 Air
Tightening
Perform air sealing to
reduce air leakage by 20%.
$1,316 $11,500 1.02 8.7
PAO-12 Lighting:
Assembly
Room, and
Offices
Replace the T12 light
fixtures in the two new
office spaces with T8
fixtures. Install occupancy
sensors in the Assembly
Space, and offices.
$158 $2,500 0.92 15.8
Notes:
a Due to advances in refrigerators in the previous 5 years, new Energy Star refrigerators are much more efficient and
result in viable energy savings.
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Table 2 - Recommended Energy Conservation Measures, IT Server Portable Building 81
Executive Summary – Recommended Energy Conservation Measures (ECMs)
IT Server Portable Building (ISPB)
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
ISPB-1 Lighting:
Exterior
Lighting
Replace the exterior HPS
fixtures with LED fixtures
$54 $600 1.31 11.2
ISPB-2 Air
Tightening
Perform air sealing to
reduce air leakage by 20%.
$88 $700 1.06 7.9
Table 3 - Recommended Energy Conservation Measures, DTC Portable Building
Executive Summary – Recommended Energy Conservation Measures (ECMs)
DTC Portable (DTCP)
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
DTCP-1 Setback
Thermostat:
DTC
Portable
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for
the Portable Building.
$736 $1,000 8.65 1.4
DTCP-2 Air
Tightening
Perform air sealing to
reduce air leakage by 20%.
$294 $2,300 1.08 7.8
DTCP-3 Lighting:
Portable
Lighting
Replace all ceiling
mounted T12 lighting with
T8 light fixtures, remove
all wall mounted
fluorescent lights, and
replace the exterior HPS
fixtures with LED fixtures
$222 $3,150 1.02 14.1
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II. Introduction
This energy audit was conducted at the Palmer Administration Office (PAO) for AHFC and the
Matanuska-Susitna Borough School District. The 46,674 square foot (sf) campus includes a 44,754 sf
office building and 1,920 sf of portable building space from two portable units. The office building
includes office spaces, a multipurpose room, and conference rooms. The location of the office is shown in
the following regional and overhead images. The energy audit was conducted in order to evaluate areas
and equipment where energy savings can be realized. The savings are then compared to a baseline and
evaluated for reasonable project financial ratios and payback.
Fig. 3 – Palmer, Alaska – Google Maps
Fig. 4 – Palmer Administrative Office – Google Maps
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III. Energy Audit Process
Prior to visiting the school, the first task was to collect and review two years of utility data for electricity
and natural gas usage. This information was used to analyze operational characteristics, calculate energy
benchmarks for comparison to industry averages, estimate savings potential and establish a baseline to
monitor the effectiveness of implemented energy conservation measures. A spreadsheet was used to enter,
sum, and calculate benchmarks and to graph energy use information (see Appendix A). The primary
benchmark calculation used for comparison and baseline data is the Energy Utilization Index, or EUI (see
Section VI).
After gathering the utility data and calculating the EUI, the next step in the audit process was to review
the architectural and engineering drawings to develop a building profile which documented building age,
type, usage, and major energy consuming equipment or systems such as lighting, Heating, Ventilating,
and Air Conditioning (HVAC), water heating, refrigeration, snow-melt, and etc. The building profile is
utilized to generate, and answer, all possible questions regarding the facility’s energy usage. These
questions were then compared to the energy usage profiles developed during the utility data gathering
step. After this information was gathered, the next step in the process was to conduct a site survey.
A site survey was completed on March 5, 2012. The audit included inspecting the building systems that
impact energy consumption and answering questions from the preliminary review of the school. The on-
site contact during the investigation was Mr. Rick Jensen of the MSBSD Maintenance Department 1. The
following information was also collected while on site: occupancy schedules, O&M practices, building
energy management program, and other information that has an impact on energy consumption.
The following energy audit includes an evaluation of the information gathered, the researching of possible
conservation opportunities, organizing the energy audit into a comprehensive report, and making ECM
recommendations for mechanical, electrical, and building envelope improvements.
1 Mr. Rick Jensen, (907) 354-0348 (mobile), (907) 864-2007 (office)
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IV. Method of Analysis
Having completed the preliminary energy audit tasks, Coffman Engineers, Inc., (CEI) conducted a site
survey. The site survey provides critical input in deciphering where energy savings opportunities exist
within a facility. The audit team from CEI walked the entire site to inventory and investigate the building
envelope and major equipment, including: HVAC, water heating, lighting, and equipment located in the
multipurpose room and offices. An understanding of how the equipment is used is determined during the
site survey.
The collected data was entered into AkWarm Commercial™ software, an energy calculating program for
buildings. The data was processed by AkWarm to model a baseline from which ECMs could be
considered. The model was compared to actual utility costs to ensure the quality of the baseline and
proposed energy modeling performed by AkWarm. The recommended ECMs focus on the building
envelope, HVAC, lighting, water heating, and other electrical measures that will reduce annual energy
consumption.
ECMs are evaluated based on building use and processes, local climate conditions, building construction
type, function, operational schedule, existing conditions, and foreseen future plans. When new equipment
is proposed, energy consumption is calculated based on the manufacturer’s cataloged information. Energy
savings are calculated by AkWarm.
Implementation of more than one ECM often affects the savings of other ECMs. The savings may in
some cases be relatively higher for an ECM implemented individually than when that ECM is just one of
multiple recommended ECMs. For example, implementing reduced operating schedules of inefficient
lighting systems may result in a given savings. Also implementing a more efficient lighting system will
add to the savings, but less than the efficient lighting would alone because there is less energy to be saved
when the lights are on a reduced operating schedule. Thus, if multiple ECM’s are recommended, the
combined savings are calculated and identified appropriately in groups.
In Appendix D, Energy Conservation Measures, the simple lifetime calculation is shown for each ECM,
which is based on the typical life of the equipment being replaced or altered. The energy savings are
extrapolated throughout the simple lifetime of the ECM. The total energy savings is calculated as the total
lifetime multiplied by the yearly energy savings.
The cost savings and installation costs are used to calculate simple payback2 and the Savings to
Investment Ratio3 (SIR). These are listed in Appendix D and summarized in the Executive Summary
Table of this report. The SIR is calculated as a ratio by dividing the break even cost by the initial installed
cost. Cost savings is calculated based on the historical energy costs for the building. Installation costs
include labor and equipment to evaluate the initial investment required to implement an ECM. These are
applied to each recommendation with simple paybacks calculated. The energy analyst’s opinions of
probable cost are garnered from RS Means Cost Data, other industry publications, and local contractors
and suppliers. In addition, where applicable, maintenance cost savings are estimated and applied to the net
savings.
2 The simple payback is based on the years that it takes for the net savings to payback the net installation cost (Cost
divided by Savings).
3 Savings to Investment Ratio (SIR): Break Even Cost divided by initial installed cost, where Break-Even Cost is
how much can be spent and still have the measure be cost effective; it equals the Present Value (PV) of Savings over
the life of the measure minus PV of maintenance costs.
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V. Building Description
The Palmer Administration Office is a single story office building with a variety of space usages and
schedules. Originally, the building was an elementary school with an open concept floor plan. In 2000,
the school was converted to house the administrative offices of the MSBSD. Major changes to the
building include the addition of a wing in 1971, a re-roofing project in 1999, upgrades to the mechanical
systems in 2010, and the remodel of the gymnasium areas into multipurpose meeting areas in 2012. The
building is operated from 7 a.m. until 6 p.m., five days a week all year.
Fig. 5 – Palmer Administration Office
There are two additional buildings on the property. One building, labeled Area 81, is the Information &
Technology (IT) server portable for the MSBSD. The other building, labeled DTC, is a portable used for
meetings and computer training purposes. The DTC portable is occupied from 8 a.m. until 5 p.m. five
days a week all year, while portable 81 has no regular occupancy.
The Palmer Administration Office has gone through a several changes throughout its history including
additions, interior renovations, exterior renovations, and reroofing projects. A brief list of the major
renovation projects and years completed are shown below.
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Table 4 - Building History
Palmer Administration Office – Building History*
Date Addition or Renovation
1971 Original Construction. Design completed 1971.
1999 Roof Patching Project
2000 Remodel of Interior Classroom Spaces. Renovations have been ongoing to
present date.
2002 Lighting and Architectural Upgrades to Music Room Areas
2010 Mechanical System Upgrades and Boiler Replacements
2012
Remodel of Gym & Music Areas – Convert gym and music performance areas
into a conference room and multipurpose assembly room. Remodel still in
progress.
*History is based on available drawings from MSBSD.
During the site survey, construction upgrades to the former gymnasium and music room areas were still
being completed. Upgrades to these areas include: framing of new storage rooms within the gymnasium,
new R-19 fiberglass batt insulation added to exterior walls, the addition of a new stage area, renovations
to the former kitchen area, lighting replacements and upgrades, ventilation ductwork demolition and re-
routing, and ventilation operation upgrades. The office building roof is also scheduled to be replaced in
the summer of 2012, with an equivalent R-value of R-38 or R-40.
V.I School Architectural Description
Wall, floor, and roof construction details were obtained from the architectural drawings and confirmed
during the site visit. The office walls are constructed of 8” split face concrete block, 2”x4” wood furring
on 24” centers, 2” rigid insulation, and gypsum sheathing for a composite R-value of R-11.6. The
southern gymnasium walls, extending from finished grade to the second floor fan room, are constructed
of 8” split face concrete block, 2”x4” metal furring on 24” centers, and gypsum sheathing for a composite
R-value of R-1.7. The eastern and western exterior walls of the gymnasium walls are constructed with 8”
split face concrete block, 2” rigid insulation, 2”x6” metal framing on 16” centers with R-19 fiberglass batt
insulation and gypsum sheathing for a composite R-value of R-16.9. The fan rooms in the office building
have walls constructed of 8” split face concrete block with a composite R-value of R-1.7. Wall heights in
the office areas are 12’-10” high, which accounts for a suspended ceiling concealing ductwork and
mechanical heating equipment. The gymnasium area in the building has taller exterior walls, with a wall
height of 21.5’. An analysis of the construction drawings showed a total 17,246 sf of wall area which was
confirmed at the site visit.
Floor construction for the school consists of 4” concrete slab on grade with 2” rigid insulation extending
2’ below grade around the perimeter of the foundation. There is approximately 41,865 sf first floor area
and 2,889 sf of second floor and utility area, for a total of 44,754 sf envelope floor area for the building.
The usable square footage of the building is greater than the floor area due to the office building’s second
story.
The roof construction for the majority of the office building consists of five ply built up roofing, 3”
extruded polystyrene rigid insulation, a vapor retarder, and metal roof decking. While the roof insulation
could not be accessed, it was estimated that the composite R-value for the roof system is R-16.7. There is
41,865 sf of roofing on the office building.
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Typical window construction consisted of single pane glass with a glass storm window installed
approximately 6” from the glass. Fixed windows were observed. An insulating value of R-1.8 was
estimated for all windows. There is a total of 495 sf of window area.
The building has several different types of insulated exterior doors. The building has four hollow core
wood entrance doors (R-2.2), two insulated steel doors (R-3.0), two fiberglass half lite doors (R-3.2), and
three solid wood half lite doors (R-2.2). There is a total of 231 sf of door area.
V.II Mechanical Description
The office building is mainly heated by boiler B-2, a high efficiency, modulating gas-fired Thermal
Solutions Evolution EVCA2000 boiler with an input of 2,000 MBH. A cast iron sectional Burnham
V1109 boiler, B-1, is also present with an input of 2,136 MBH. B-1 is equipped with a Powerflame
BCCR2-GO-15 burner with a firing rate of 2,136 MBH. Boiler B-2 is the primary boiler. Boiler B-1 is
only used for supplemental heating when necessary. The boilers are connected to a boiler loop that
delivers heat to the unit heaters and hydronic heating coils in the supply air fans. Boilers B-1 and B-2 are
approximately 2 years old and both boilers appear to be well maintained.
The building heating system is operated year round due to the presence of grooved coupling pipe joints
throughout the building. The school district has experienced leakage at the grooved joints when thermally
cycling from hot to cold. During the 2010 mechanical room retrofit, the original 1960’s sectional cast iron
B-2 was replaced with a similarly sized, high efficiency, modulating boiler. During the site survey, it was
observed that B-2, the high efficiency modulating boiler, cycled on and off frequently. Building personnel
confirmed that B-2 modulates up only when the outside temperature drops below -10°F. The circulating
pump, PMP-3, for boiler B-2 is equipped with a variable frequency drive (VFD) which rarely speeds up
due to the boiler’s low firing. This indicates that boiler B-2 was oversized for the building. While the
replacement of B-2 was considered, the economic payback of replacing the new boiler with a new,
smaller boiler would not be cost effective for the office at this time. In the future, it is recommended that
new modulating boilers be sized to optimize boiler efficiencies.
There are seven air hander units fans (AHUs) in the school that provide tempered ventilation air to the
office spaces, the assembly rooms, and the conference rooms. Half of the AHUs utilize hydronic heating
coils to heat the supply air while the remaining fans provide ventilation air to the spaces. AHU-1, AHU-3,
and AHU-5 have 1.5 HP fans, each providing 2,100-2,700 CFM of heated air through underground
ductwork to the perimeter offices. AHU-2, AHU-4, and AHU-6 each have 15 HP fans providing 9,000-
13,120 CFM ventilation air to the office spaces. Heating and ventilation air for the new auditorium space
is supplied by AHU-7 that supplies 9,000 CFM to the space with a 5HP motor. Equipment details for all
of the fans in the building are shown in Appendix C.
Occupants report uneven temperature control. The change from open plan to partitioned offices may
separate areas from their thermostats and is suspected as a contributor to the malady.
The domestic hot water for the building is supplied by a Triangle Tube Smart 80 indirect water heater
with a storage capacity of 76 gallons. The domestic hot water from the water heater is re-circulated
throughout the office building using a Grundfos UP-15SF pump.
The building’s energy management and control system is a hybrid system, using both DDC and
pneumatic controls. Compressed air is provided by a Honeywell air compressor. The system was
observed to be in fair working order; however, pneumatic systems are considered outdated due to the vast
improvements in monitoring, control and operating efficiencies available from the modern genre of
electronic DDC control systems.
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V.III Electrical Description
The building is served by a 400 Amp (A), 277/480 Volt (V), three-phase, four-wire, underground
electrical service connected to a pad-mounted utility transformer. The school has a 150kW standby diesel
generator used to power selected loads in the event of a power outage. Inside the school, 277/480V power
is used to serve large mechanical loads and lighting. Dry type transformers are used to step the voltage to
120/208V, three phase for receptacle loads, computers, and kitchen equipment. Since the passage of the
Energy Policy Act of 2005, all general purpose transformers have been required to meet the efficiency
requirements listed in the National Electrical Manufacturer's Association publication NEMA TP1-2002.
There are energy savings available by replacing these transformers with new models that meet or exceed
the standard, however caution must be exercised as replacing transformers impacts available fault current
and over-current protection device selective coordination. The replacement of the school’s existing
transformers to meet NEMA requirements can only be recommended after performing a power system
analysis. That level of study is outside the scope of this project.
The office spaces are primarily illuminated by a mixture of fluorescent T8 and T12 light fixtures with
electronic and magnetic ballasts. Approximately 70% of the fixtures in the office spaces are surface
mounted 1'x4' two-lamp T12 troffer type fixtures. The Payroll and Accounting cubicle office space has
been upgraded with recessed two-lamp 2'x4' T8 volumetric troffers which account for 17% of the office
light fixtures. The remaining office lighting is provided by single-lamp fluorescent strip fixtures, three
and four-lamp T12 troffers, 2'x2' two-lamp T8 U-lamp troffers, and two and four-lamp T8 troffers. All of
the office lighting is controlled by wall mounted rocker switches.
The majority of the lighting in the corridors, closets, conference rooms and restrooms is provided by
single-lamp strip T8 fixtures, two-lamp 2'x2' U-lamp T8 fixtures, 1'x4' surface mounted two-lamp T12
troffers.
During the site visit the Palmer Administration Office Building was under construction. Contractors were
transforming the gymnasium into two offices and an assembly area, and the music room into a conference
room. According to the construction drawings existing two-lamp 1'x4' surface mounted T12 troffers will
be re-used in the storage and conference rooms. The existing 400W Metal Halide (MH) high bay lighting
will be replaced with compact fluorescent lamp (CFL) recessed down lights and 2'x4' recessed two-lamp
T8 volumetric troffers. All of the lighting in these areas will be controlled by wall mounted rocker
switches.
The lighting within most of the school was observed to be in compliance with the values recommended
by the Illuminating Engineering Society of North America (IESNA). Areas that were observed to be out
of compliance are identified in the ECM descriptions below.
The building mounted exterior lighting consists of 150W canopy, and wallpack High Pressure Sodium
(HPS) light fixtures. Area lighting is provided by 150W LED pole-mounted fixtures. Pole mounted
fixtures are present in single, and double-headed configurations. These lights are controlled by an on/off
photo switch that turns the lights off during the day.
Other electricity-using equipment not previously described in the mechanical or electrical sections include
microwaves, various other kitchen equipment, and various user equipment such as projectors, computers,
and printers.
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V.IV Outbuildings Description
There are two 40’x24’, 960 sf portable buildings at the Palmer Administration Office. Both of the
portables utilize electrical resistance heat. One of the portables, labeled Area 81, is unoccupied the
majority of the time and houses the MSBSD information technology (IT) servers for the district. The
other building, labeled DTC, serves as a teaching classroom and is occupied 8 a.m. until 5 p.m. five days
a week.
Although the exact construction details for the portables is unknown, it was estimated that the walls are
constructed with 2”x6” wood stud walls on 16” centers with R-21 batt insulation for a composite R-value
of R-18.2. The exterior faces of the walls have T1-11 siding. There is also plywood skirting around the
base of each portable. The skirting is constructed of 2x2 wood studs on 16” centers with an R-value of R-
2.8. There is a total of 2,560 sf of exterior wall area.
The portable buildings have above-grade floors resting on piles. Plywood skirting protects the piles and
floor construction from the weather. The floor is constructed of plywood flooring resting on 2”x8” wood
joists. It is estimated that the floor is insulated with 12” of R-30 batt insulation for an equivalent
insulating R-value of R-41. There is approximately 1,920 sf of total floor area.
Each portable is covered by a ventilated cold roof with shingles on top of plywood decking. It is
estimated that the roof is insulated with 12” of R-38 fiberglass batt insulation. There is a total of 1,946 sf
of roof area.
The DTC portable has four double paned, vinyl framed windows (R-2.0) while portable 81 has two small
double paned, vinyl framed windows (R-2.0). There is a total of 144 sf of window area. Each portable has
two insulated metal doors with an effective R-value of R-2.5. There is a total of 84 sf of door area. The
DTC portable is provided a 120/208V single phase feed from the school building. The feeder terminates
in a small distribution panel which is used to distribute power to the portables lighting, heating and
receptacles. The interior lighting consists of (14) two-lamp ceiling mounted T12 light fixtures with
magnetic ballasts, and two, single-lamp T8 wall wash fixtures. All of the interior lighting is controlled by
wall mounted rocker switches. The exterior lighting consists of two 70W HPS wall pack fixtures at the
doorways of each portable and are controlled by an on off photo switch that turns the fixtures off during
the day.
Cooling is provided to portable 81 using two York DH120C0B4FAA3 rooftop units. The York units
maintain a room temperature of 70°F all year using either mechanical or economizer cooling, depending
on the outdoor air conditions. One of the units is a redundant unit. The portable buildings have a central
programmable thermostat. The electrical resistance baseboards in portable 81 have been disconnected as
the heat given off by the electrical equipment in the room is sufficient to heat the building. Portable 81 is
provided both a 120/208V single phase feed, and a 277/480V three phase feed from the school building.
CEI was unable to enter the portable during the site visit due to the sensitivity of the equipment within,
however is assumed that the 120/208V feeder terminates in a small distribution panel which is used to
distribute power to the portables lighting, and receptacles, while the 480V feeder is used for the rooftop
mechanical cooling units. It is also assumed that the interior lighting consists of (14) two-lamp ceiling
mounted T12 light fixtures with magnetic ballasts that are controlled by wall mounted rocker switches.
The exterior lighting consists of two 70W HPS wall pack fixtures at the doorways of each portable and
are controlled by an on off photo switch that turns the fixtures off during the day.
Separate AkWarm models were created to model the two different portable buildings. Per the request of
the MSBSD, the portable units were modeled and included in the total energy usage of the school.
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VI. Historic Energy Consumption and Cost
Tables provided in Appendix A, Energy Benchmark Data Report, represent the electric and natural gas
energy usage for the surveyed facility from January 2009 to December 2010. Matanuska Electric
Association provides the electricity and the Enstar Natural Gas Company provides the natural gas to the
building. Both utility companies bill the facility using a commercial rate schedule. The actual utility bills
were not provided to be able to verify the data received to assure 100 percent accuracy of the data.
The AkWarm model of the facility was built to match the facility’s average annual electric and natural
gas consumption, so that a realistic model could be created. The monthly energy consumption of the
AkWarm model matches the actual average monthly consumption of the facility within 25%, which is
adequate for this level of modeling. Overall, the energy consumption trends of the AkWarm model and
the actual facility match appropriately. Graphical representations of the monthly energy consumption are
included in Appendix A.
VI.I Electrical Consumption Data
The electric utility costs consist of several components: a fixed monthly customer charge, an energy usage
charge, fuel surcharge, taxes, and a demand charge. The energy usage and fuel surcharge are based on the
customer's usage as measured in kilowatt-hours (kWh). The usage (kWh) is determined by load wattage
divided by 1,000, times hours running. For example, a 1,000 watt space heater operating for one hour will
use 1 kWh of electricity as would ten, 100 watt lamps operating for one hour or one, 100W lamp
operating for 10 hours. One kWh is equivalent to 3,413 BTU. Utility data used in this report reflects the
historical data provided for the building in a summarized format.
VI.II Natural Gas Consumption Data
The natural gas utility measures consumption and bills in CCF of natural gas, where one CCF equals 100
cubic feet of natural gas. The average heating value of natural gas is 1,000 BTUs per cubic foot, making 1
CCF equal to 100,000 BTUs or 1 Therm.
VI.III Overall Energy Consumption Data
The overall cost for energy use is calculated by dividing the total cost by the total usage. Based on the
electric and natural gas utility data provided, the average cost for the energy and consumption calculations
at the surveyed facility are summarized in the table below.
Table 5 - Energy Cost and Consumption Data
Energy Cost and Consumption Data
2009 2010 Average
Electric 0.14 $/kWh 0.11 $/kWh 0.12 $/kWh
Natural Gas 1.02 $/CCF 0.83 $/CCF 0.93 $/CCF
Total Cost $133,362 $188,538 $125,950
ECI 2.86 $/sf 2.54 $/sf 2.70 $/sf
Electric EUI 53.1 kBtu/sf 56.5 kBtu/sf 54.8 kBtu/sf
Natural Gas EUI 73.6 kBtu/sf 88.8 kBtu/sf 81.2 kBtu/sf
Building EUI 126.7 kBtu/sf 145.3 kBtu/sf 136.0 kBtu/sf
The Energy Cost Index (ECI) is derived by dividing the annual cost by the building square footage. The
building square footage was calculated to be approximately 46,674 square feet. This area includes the
44,754 sf main building in addition to the 1,960 sf of portable buildings, each of which is 960 sf.
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The annual EUI is expressed in Thousands of British Thermal Units per Square Foot (kBtu/sf) and can be
used to compare energy consumption of similar building types or to track consumption from year to year
in the same building. The EUI is calculated by converting annual consumption of all fuels used to Btu’s
and then dividing by the area (gross conditioned square footage) of the building. EUI is a good indicator
of the relative potential for energy savings. A comparatively low EUI indicates less potential for large
energy savings. Building architectural, mechanical, and electrical drawings were obtained and utilized to
calculate and verify the gross area of the facility. The gross area was confirmed on the physical site
investigation.
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VII. Equipment Inventory and Photo Survey
Following the completion of the field survey a detailed equipment list was created and is attached as
Appendix C. The major equipment listed are considered to be the major energy consuming equipment in
the building whose replacement could yield substantial energy savings.
An approximate age was assigned to the equipment if a manufactured date was not shown on the
equipment’s nameplate. As listed in the 2011 ASHRAE Handbook for HVAC Applications, Chapter 37,
Table 4, the service life for the equipment along with the remaining useful life in accordance to the
ASHRAE standard are also noted in the equipment list.
Where there are zero (0) years remaining in the estimated useful life of a piece of equipment, this is an
indication that maintenance costs are likely on the rise and more efficient replacement equipment is
available which will lower the operating costs of the unit. Maintenance costs should also fall with the
replacement.
Additionally, photos of various equipment and the building construction were taken during the site visit.
Several photos are included in Appendix G.
CEI made miscellaneous thermographic images of the building using a FLIR T300 Infrared Camera. This
is not a thermographic study, but rather just a few snapshots to illustrate easy-to-identify heat losses.
These thermographic photos are included in Appendix H.
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VIII. Energy Conservation Measures
The following ECMs described here have been calculated by AkWarm Commercial and considered by the
energy audit team as viable projects. ECMs provided below are considered to have viable financial ratios
(SIR>1) or to add value to the building or building operational profiles. Two AkWarm Commercial
models were created. The first model was used to establish a baseline of the building usage prior to the
2012 renovations within the gymnasium. The second model was modified from the first version to take
into consideration the upgrades that have already been completed on the office building, including
increased insulation to the gymnasium walls and the installation of a carbon dioxide sensor to AHU-7.
The following ECMs show conservation measures applicable to the office building after the 2012
improvements to the gymnasium area are complete. For a full list of ECMs considered and calculated by
the energy audit team, including ECMs not recommended at this time, please see Appendix D.
VIII.I Office Building Energy Conservation Measures
ECM# PAO-0 – Replace residential & light commercial refrigerators/freezers older than 5 years
old
Annual Energy Savings Installed Cost SIR Payback (years)
---<10 years
Due to advances in refrigerators in the previous five years, new Energy Star residential-type and light
commercial-type refrigerators and freezers are much more efficient and result in viable energy savings.
Built-in refrigerators and freezers should be evaluated independently. Replacing existing refrigerators,
which are older than five years old, with new energy star models will typically have paybacks of less than
10 years.
ECM# PAO-1 – Setback Thermostat for Office Building
Annual Energy Savings Installed Cost SIR Payback (years)
$5,333 $2,000 34.43 0.4
Currently, there is no night-set back schedule for the office building. It is recommended that the building
temperature be lowered to 60F during unoccupied times. Lowering the heat load of the building will
reduce natural gas consumption. Since the office building’s thermostats are already connected to the DDC
system, the cost of this ECM only includes the time required to program a night setback. The 60F night-
set back is feasible; however, it may require that other DDC set points be changed, such as the low-temp
alarm. This ECM is a compilation of items 1, 2, and 6 in Appendix D, which are intended to be
implemented concurrently. Details of the individual items are shown in Appendix D.
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ECM # PAO -2 – Repair Burnout Motors with NEMA Premium Efficiency Motors
Annual Energy Savings Installed Cost SIR Payback (years)
$1,811 $3,950 2.84 2.2
Replacing fan motors in AHU-1 through AHU-5 with new NEMA premium efficiency motors will offer
significant energy savings. New high efficiency motors have reduced electrical demands which create
significant energy savings for larger horsepower (HP) motors. Replacing these existing motors while they
are still functional will result in a high replacement cost with a longer payback. However, upgrading these
motors to high efficiency motors when the existing motors are in need of repair will offer a more
reasonable payback because the marginal cost of the high efficiency motor over the standard efficiency
motor replacement is only a $3,950 repair cost. This ECM is based on new 88.5% efficient, 1.5HP
motors for AHU-1, AHU-3, and AHU-5. New motors for AHU-2 and AHU-4 are based on 91% efficient,
15 HP motors. Details of the individual item are shown in items 5, 9, 28, 29, and 30 in Appendix D.
ECM# PAO-3– Upgrade Staff Room Lighting and Controls
Annual Energy Savings Installed Cost SIR Payback (years)
$339 $2,350 2.11 6.9
There are three staff rooms in the building, two are used as general work/copy rooms and the third is a
break room. The break room has adequate lighting levels and is illuminated by (16) two-lamp T8 troffers.
The other two rooms are illuminated by three-lamp T12 troffers, and four-lamp T8 troffers, and have
lighting levels that are in excess of the IENSA recommended values and may be reduced. The lighting in
these areas is controlled by wall mounted rocker switches.
It is recommended that the following lighting upgrades be completed:
Retrofit the (4) three-lamp T12 troffers with two-lamp T8 volumetric troffer retrofit kits.
Retrofit the (6) four-lamp T8 troffers with two-lamp T8 volumetric troffer retrofit kits.
Install (4) new ceiling mounted occupancy sensors for lighting control. One each in the
two work/copy rooms, and two in the break room with one on either side of the partition.
This description is for a compilation of several ECMs that are intended to be implemented at the same
time. However, due to constraints with the AkWarm modeling software, the different lighting
configurations were modeled separately. See items 8, 12, and 15 in Appendix D for details of individual
measures.
ECM # PAO -4– Install Carbon Dioxide Sensors
Annual Energy Savings Installed Cost SIR Payback (years)
$1,763 $12,000 1.89 6.8
It is recommended that CO2 sensors and demand ventilation control be used to reduce the outside air
(OA) rate. Currently, outside air minimum is set at 10% on most AHUs. Heating the OA is a
considerable energy cost. With demand ventilation control, OA rates will vary from 0% - 100% based on
indoor air quality conditions. During unoccupied or low occupancy periods, outdoor air ventilation rates
for AHU-2, AHU-4, and AHU-6 would adjust proportionally to the occupancy rates within those areas.
The cost of this ECM includes the cost of installing three CO2 sensors, connecting the sensors to the
existing DDC system, and the cost for a DDC system contractor to program the sensors. A DDC system
contractor will need to evaluate the existing DDC system to determine if other infrastructure
improvements are necessary. See item 14 in Appendix D for more information.
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ECM # PAO -5 – Upgrade Conference Room Lighting and Controls
Annual Energy Savings Installed Cost SIR Payback (years)
$1,194 $11,400 1.53 9.5
The lighting in the five conference rooms is provided by a total of (71) 1'x4' surface mounted two-lamp
T12 troffer fixtures with magnetic ballasts. All of the lighting is controlled by wall mounted rocker
switches. It is recommended that the (71) existing light fixtures are replaced one-for-one with recessed
2'x4' two-lamp T8 volumetric or flat lensed troffers, and that each of the rooms is provided a new ceiling
mounted occupancy sensor for lighting control. See item 17 in Appendix D for more details.
ECM # PAO-6–Upgrade Small Office Lighting and Controls
Annual Energy Savings Installed Cost SIR Payback (years)
$3,648 $39,200 1.35 10.7
This ECM is for the approximately (33) small private and shared office spaces that do not have partitions
between work stations. The lighting for these areas includes (2) two-lamp 60W incandescent task lights,
(8) single-lamp T12 strip fixture, (158) two-lamp T12 troffers, (25) three-lamp T12 troffers, (4) four-lamp
T12 troffers, (22) two-lamp T8 troffers and (3) four-lamp T8 troffers. All of the lighting is controlled by
local wall mounted rocker switches.
It is recommended that the following lighting upgrades be completed:
Re-lamp the incandescent task lights with screw base CFL or LED lamps.
Replace the (8) single-lamp T12 strip light fixtures one-for-one with single-lamp T8 strip
light fixtures.
Replace the (158) two-lamp T12 troffers one-for-one with recessed 2'x4' two-lamp T8
volumetric or flat lensed troffers.
Retrofit the three and four-lamp T12 troffers with T8 lamps, program start electronic
ballasts, and new lamp holders.
Install one new occupancy sensor in each of the offices for lighting control.
This description is for a compilation of several ECMs that are intended to be implemented at the same
time. However, due to constraints with the AkWarm modeling software, the different lighting
configurations were modeled separately. See items 3, 4, 7, 11, 16, 19, and 31 in Appendix D for details of
individual measures.
ECM # PAO-7 – Upgrade Exterior Lighting
Annual Energy Savings Installed Cost SIR Payback (years)
$569 $7,700 1.08 13.5
The building mounted exterior lighting at the school consists of (4) 50W wall pack LED fixtures, (2)
150W LED building mounted flood light fixtures, (4) 150W (HPS) canopy light, and (7) 150W HPS wall
pack fixtures. Site lighting consists of (6) 150W single-head LED, and (1) 150W two-head LED pole
mounted area lighters. It is recommended that the 150W HPS canopy and wall pack lights are replaced
one-for-one with 72W LED fixtures of similar type. Installation costs assume the re-use of existing
wiring.
This description compiles measures 22 and 23 which were individually modeled in AkWarm. See
Appendix D for details of individual measures.
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ECM # PAO-8 – Upgrade Corridor Lighting
Annual Energy Savings Installed Cost SIR Payback (years)
$332 $4,600 1.06 13.9
The lighting in the corridors consists of (23) two-lamp 1'x4' surface mounted two-lamp T12 troffers, (4)
single lamp T8 strip fixtures, and (98) 2'x2' troffers with two T8 U-lamps per fixture. It is recommended
that the T12 fixtures are replaces one-for-one with recessed 2'x4' two-lamp T8 volumetric or flat lensed
troffers. See item 24 in Appendix D for more information.
ECM # PAO-9 –Restroom Lighting and Controls
Annual Energy Savings Installed Cost SIR Payback (years)
$339 $5,650 1.03 14.2
There are (11) restroom areas in the building, (5) are small single toilet restrooms and (6) are large multi-
stall rooms. The lighting in these areas consists of (3) three-lamp 60W incandescent vanity fixtures, (21)
1'x4' surface mounted two-lamp T12 troffers, and (3) 1'x4' surface mounted two-lamp T8 troffers. It is
recommended that the T12 troffers are replaced one-for-one with two-lamp T8 fixtures with program start
electronic ballasts. The 60W incandescent lamps should be replaced with screw base CFL or LED lamps.
One occupancy sensor should also be installed in each restroom, ceiling mounted occupancy sensors are
recommended in the multi-stall restrooms, while the wall switches may be replaced in the smaller
restrooms with occupancy sensor switches. See items 10, 20, 25, and 35 in appendix D for more
information.
ECM # PAO-10 –Large Office Space Lighting
Annual Energy Savings Installed Cost SIR Payback (years)
$3,178 $45,500 1.03 14.3
This ECM is for the approximately (7) large shared office spaces partitions between work stations. The
lighting for these areas includes (256) two-lamp T12 troffers, (4) four-lamp T12 troffers, (84) two-lamp
T8 troffers and (17) 2'x2' troffers with two T8 U-lamp per fixture. All of the lighting is controlled by local
wall mounted rocker switches. It is recommended that the (256) two-lamp T12 troffers are replaced one-
for-one with recessed 2'x4' two-lamp T8 volumetric or flat lensed troffers. Additionally the four-lamp T12
troffers should be retrofitted with T8 lamps, program start electronic ballasts, and new lamp holders.
This description is for a compilation of several ECMs that are intended to be implemented at the same
time. However, due to constraints with the AkWarm modeling software, the different lighting
configurations were modeled separately. See items 13 and 27 in Appendix D for details of individual
measures.
ECM # PAO -11 – Perform Air Sealing to Reduce Air Leakage by 20%
Annual Energy Savings Installed Cost SIR Payback (years)
$1,316 $11,500 1.02 8.7
Unconditioned infiltration air, leaking through doors, windows, and other building envelope penetrations
contributes to the heating required in the building. Methods to decrease the infiltration into the building
include: sealing around roof and wall penetrations with caulking and insulation, gasketing mechanical
louvers or hoods, providing gaskets to all exterior cover plates, and adding weather stripping around
exterior doors. To achieve a viable economic benefit, up to $11,500 can be invested and still achieve an
SIR ≥ 1by reducing air leakage by 20%. See item 26 in Appendix D for more information.
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ECM# PAO-12 - New Assembly and Storage Room Lighting and Controls
Annual Energy Savings Installed Cost SIR Payback (years)
$158 $2,500 0.92 15.8
This ECM is for the section of the school that was undergoing a renovation during the site visit and is
based on the construction drawings. The assembly room will be illuminated by (21) two-lamp T8
volumetric troffer fixtures and (21) recessed 18W CFL down lights near the perimeter of the room. LED
track lighting will be used to provide additional illumination to the stage area of the assembly room. Two
new storage areas are also part of this renovation and will be illuminated by (8) re-used 1'x4' surface
mounted two-lamp T12 troffers. It is recommended that the T12 troffers are replaced by recessed 2'x4'
two-lamp T8 volumetric or flat lensed troffers. Ceiling mounted occupancy sensors should also be
installed, one each in the two storage rooms, and approximately four in the assembly room, two on each
side of the partition to control the troffer light fixtures. This ECM does not include revising the control for
the recessed CFL down lights as it is difficult to determine the installation cost with the hard lid structure.
The costs of this ECM assumes that the contractor has completed the upgrades in the new assembly area,
however if these recommended upgrades are implemented during this renovation the installation costs for
the new T8 fixtures in the storage areas may be reduced and the SIR will be above 1.0. See items 18 and
34 in Appendix D for more information.
VIII.II IT Server Portable Building 81 ECMs
The following ECMs described here have been calculated by AkWarm Commercial and considered by the
energy audit team as viable projects. ECMs provided below are considered to have viable financial ratios
(SIR>1) or to add value to the building or building operational profiles. For a full list of ECMs considered
and calculated by the energy audit team, including ECMs not recommended at this time, please see
Appendix E.
ECM # ISPB -1– Upgrade Portable Building Lighting
Annual Energy Savings Installed Cost SIR Payback (years)
$54 $600 1.31 11.2
The interior lighting in the portable is provided by (14) two-lamp fluorescent T12 fixtures with magnetic
ballasts. The interior lights are controlled by a wall mounted rocker switch. Exterior lighting consists of
(2) 70W HPS wall pack fixtures that are controlled by photocells that shut the fixtures off during the day.
It is recommended that the exterior lights are replaced one-for-one with 35W LED fixtures with integral
photocell controllers of a similar type. See item 1 in Appendix E for more information.
Additional ECM's were considered for this area such as replacing the existing T12 fixtures with T8
fixtures but the usage schedule for some of these spaces is not high enough for the replacement to have a
SIR above 1.0.
ECM # ISPB -2 – Perform Air Sealing to Reduce Air Leakage by 20%
Annual Energy Savings Installed Cost SIR Payback (years)
$88 $700 1.06 7.9
Unconditioned infiltration air, leaking through doors, windows, and other building envelope penetrations
contributes to the heating required in the building. Methods to decrease the infiltration into the building
include: sealing around roof and wall penetrations with caulking and insulation, providing gaskets to all
exterior cover plates, and adding weather stripping around exterior doors. To achieve a viable economic
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benefit, up to $700 can be invested and still achieve an SIR ≥ 1by reducing air leakage by 20%. See item
2 in Appendix E for more information.
VIII.III DTC Portable Building ECMs
The following ECMs described here have been calculated by AkWarm Commercial and considered by the
energy audit team as viable projects. ECMs provided below are considered to have viable financial ratios
(SIR>1) or to add value to the building or building operational profiles. For a full list of ECMs considered
and calculated by the energy audit team, including ECMs not recommended at this time, please see
Appendix F.
ECM # DTCP -1 – Setback Thermostat for Portable Building
Annual Energy Savings Installed Cost SIR Payback (years)
$736 $1,000 8.65 1.4
Currently, there is a programmable digital thermostat in the portable that is capable of lowering the
building temperature during unoccupied periods. The installed cost shown includes programming a night
set-back schedule to 60F during unoccupied periods. See item 1 in Appendix F.
ECM # DTCP -2 – Perform Air Sealing to Reduce Air Leakage by 20%
Annual Energy Savings Installed Cost SIR Payback (years)
$294 $2,300 1.08 7.8
Unconditioned infiltration air, leaking through doors, windows, and other building envelope penetrations
contributes to the heating required in the building. Methods to decrease the infiltration into the building
include: sealing around roof and wall penetrations with caulking and insulation, providing gaskets to all
exterior cover plates, and adding weather stripping around exterior doors. To achieve a viable economic
benefit, up to $2,300 can be invested and still achieve an SIR ≥ 1by reducing air leakage by 20%. See
item 3 in Appendix F for more information.
ECM # DTCP -3 – Upgrade Portable Building Lighting
Annual Energy Savings Installed Cost SIR Payback (years)
$222 $3,150 1.02 14.1
The interior lighting in the portable is provided by (14) ceiling mounted two-lamp fluorescent T12
fixtures with magnetic ballasts, and (2) single-lamp T8 wall wash fixtures with electronic ballasts. The
interior lights are controlled by a wall mounted rocker switch. Exterior consists of (2) 70W HPS wall
pack fixtures that are controlled by photocells that shut the fixtures off during the day. It is recommended
that the exterior lights are replaced one-for-one with 35W LED fixtures with integral photocell controllers
of a similar type. Interior upgrades include the one-for-one replacement of the T12 fixtures two-lamp T8
fixtures, the demolition of the two wall wash fixtures, and the installation of a ceiling mounted occupancy
sensor for lighting control. See items 2, 4, and 5 in Appendix F for more information.
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VIII.IV Administrative Controls for Energy Conservation and Optimization
While the intent of many energy conservation measures is to increase the efficiency of fuel-burning and
electrical equipment, an important factor of energy consumption lies in the operational profiles which
control the equipment usage. Such profiles can be managed by administrative controls and departmental
leadership. They determine how and when fuel-burning and electrical equipment are used, and therefore
have a greater impact on energy savings potential than simply equipment upgrades alone. Significant
energy cost savings can be realized when ECMs are combined with efficient-minded operational profiles.
Operational profiles may be outlined by organization policy or developed naturally or historically. These
profiles include, but are not limited to: operating schedules, equipment setpoints and control strategies,
maintenance schedules, and site and equipment selection.
Optimization of operational profiles can be accomplished by numerous methods so long as the intent is
reduction in energy-using equipment runtime. Due to the numerous methods of optimization, energy cost
savings solely as a result of operational optimization are difficult to predict. Quantification, however, is
easy to accomplish by metering energy usage during and/or after implementation of energy-saving
operational profiles and ECMs. Shown below are some examples which have proven successful for other
organizations.
Optimization of site selection includes scheduling and location of events. If several buildings in a given
neighborhood are all lightly used after regularly occupied hours, energy savings can be found when after-
hours events are consolidated and held within the most energy efficient buildings available for use. As a
result, unoccupied buildings could be shut down to the greatest extent possible to reduce energy
consumption.
Two operational behaviors which can be combined with equipment upgrades are operating schedules and
equipment control strategies including setpoints. Occupancy and daylight sensors can be programmed to
automatically shut off or dim lighting when rooms are unoccupied or sufficiently lit from the sun.
Operating schedules can be optimized to run equipment only during regular or high-occupancy periods.
Also, through a central control system, or with digital programmable thermostats, temperature setpoints
can be reduced during low-occupancy hours to maximize savings. In addition, sporadically used
equipment can be shut down during unoccupied hours to further save energy. In general, having
equipment operating in areas where no occupants are present is inefficient, and presents an opportunity
for energy savings.
Operational profiles can also be implemented to take advantage of no- or low-cost ECMs. Examples
include heating plant optimizations (boiler section cleaning, boiler flush-through cleaning) and tighter
controls of equipment setbacks and shutdowns (unoccupied zones equipment shutdown, easier access to
and finer control of equipment for after-hours control). In a large facility management program,
implementation of these measures across many or all sites will realize dramatic savings due to the
quantity of equipment involved.
Changes to building operational profiles can only be realized while simultaneously addressing health,
safety, user comfort, and user requirements first. It is impractical to expect users to occupy a building or
implement operational behaviors which do not meet such considerations. That said, it is quite practical for
management groups to implement administrative controls which reduce losses brought about by excess
and sub-optimum usage.
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Appendix A
Energy Benchmark Data
Palmer Administration Office Draft Energy Audit Report
First Name Last Name Middle Name Phone
Rick Jensen 907‐376‐0806
State Zip
AK 99645
Monday‐
Friday
Saturday Sunday Holidays
7 am ‐ 8 pm 0 0 0
Average # of
Occupants
During
229 0 0 0
Renovations / Notes
Date
1971
1999
Facility Zip
88,379
99645
Email
ricky.jensen@matsuk12.us
Details
501 N. Gulkana St Palmer
Original Construction
Primary
Operating
Hours
Contact Person
City
Palmer501 N Gulkana St
Mailing Address
Roof Patching Project
Year Built
1971
REAL Preliminary Benchmark Data Form
PART I – FACILITY INFORMATION
Facility Owner
Mat‐Su School District
Building Name/ Identifier Building Usage Building Square Footage
Facility Owned By Date
03/09/11Municipal Government/Subdivision
Administration Office Education Admin.46,674
Facility Address
Building Type
Office
Community Population
Facility City
1999
2000
2002
2010
2012
Notes
PART II – ENERGY SOURCES
Heating Oil Electricity Natural Gas Propane Wood Coal
$ /gallon $ / kWh $ / CCF $ / gal $ / cord $ / ton
Other energy
sources?
Any available drawings are kept at district office for maintenance.
Roof Patching Project
Remodel of Interior Classroom Spaces to Office Spaces
Lighting and Architectural Upgrades: Music Room Areas
1. Please check every energy source you use in the table below. If known, please enter the base rate you pay
for the energy source.
2. Provide utilities bills for the most recent two‐year period for each energy source you use.
Mechanical System Upgrades and Boiler Replacements
Remodel of Gym and Music Areas
Coffman Engineers, Inc.AkWarm No. CIRI-PAQ-CAEC-02
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Palmer Administration Office Draft Energy Audit Report
Administration Office
Buiding Size Input (sf) =46,674
2009 Natural Gas Consumption (Therms)34,348
2009 Natural Gas Cost ($)35,206
2009 Electric Consumption (kWh)726,480
2009 Electric Cost ($)98,156
2009 Total Energy Use (kBtu)5,914,276
2009 Total Energy Cost ($)133,362
Annual Energy Use Intensity (EUI)
2009 Natural Gas (kBtu/sf) 73.6
2009 Electricity (kBtu/sf)53.1
2009 Energy Utilization Index (kBtu/sf)126.7
Annual Energy Cost Index (ECI)
2009 Natural Gas Cost Index ($/sf)0.75
2009 Electric Cost Index ($/sf)2.10
2009 Energy Cost Index ($/sf)2.86
2010 Natural Gas Consumption (Therms)41,429
2010 Natural Gas Cost ($)34,878
2010 Electric Consumption (kWh)772,960
2010 El t i C t ($)83 6612010 Electric Cost ($)83,661
2010 Total Energy Use (kBtu)6,781,012
2010 Total Energy Cost ($)118,538
Annual Energy Use Intensity (EUI)
2010 Natural Gas (kBtu/sf)88.8
2010 Electricity (kBtu/sf)56.5
2010 Energy Utilization Index (kBtu/sf)145.3
Annual Energy Cost Index (ECI)
2010 Natural Gas Cost Index ($/sf)0.75
2010 Electric Cost Index ($/sf)1.79
20010 Energy Cost Index ($/sf)2.54
Note:
1 kWh = 3,413 Btu's
1 Therm = 100,000 Btu's
1 CF ≈ 1,000 Btu's
Coffman Engineers, Inc.AkWarm No. CIRI-PAQ-CAEC-02
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Palmer Administration OfficeDraft Energy Audit ReportAdministration OfficeNatural GasBtus/CCF =100,000Provider Customer #Month Start Date End Date Billing Days Consumption (CCF) Consumption (Therms) Demand Use Natural Gas Cost ($) Unit Cost ($/Therm) Demand Cost ($)ENSTARG59822 Jan‐09 12/15/2008 1/13/2009 29 5,913 5,913 $5,990 $1.01ENSTARG59822 Feb‐09 1/13/2009 2/13/2009 31 5,177 5,177 $5,253 $1.01ENSTARG59822 Mar‐09 2/13/2009 3/16/2009 31 4,073 4,073 $4,145 $1.02ENSTARG59822 Apr‐09 3/16/2009 4/15/2009 30 3,335 3,335 $3,406 $1.02ENSTARG59822 May‐09 4/15/2009 5/15/2009 30 1,498 1,498 $1,566 $1.05ENSTARG59822 Jun‐09 5/15/2009 6/16/2009 32 1,163 1,163 $1,230 $1.06ENSTARG59822 Jul‐09 6/16/2009 7/15/2009 29 964 964 $1,032 $1.07ENSTARG59822 Aug‐09 7/15/2009 8/13/2009 29 671 671 $737 $1.10ENSTARG59822 Sep‐09 8/13/2009 9/15/2009 33 1,638 1,638 $1,707 $1.04ENSTARG59822 Oct‐09 9/15/2009 10/14/2009 29 1,582 1,582 $1,652 $1.04ENSTARG59822 Nov‐09 10/14/2009 11/16/2009 33 3,715 3,715 $3,791 $1.02ENSTARG59822 Dec‐09 11/16/2009 12/16/2009 30 4,619 4,619 $4,698 $1.02ENSTARG59822 Jan‐10 12/16/2009 1/14/2010 29 4,733 4,733 $3,980 $0.84ENSTARG59822 Feb‐10 1/14/2010 2/12/2010 29 4,920 4,920 $4,134 $0.84ENSTARG59822 Mar‐10 2/12/2010 3/16/2010 32 4,105 4,105 $3,460 $0.84ENSTARG59822 Apr‐10 3/16/2010 4/16/2010 31 4,122 4,122 $3,509 $0.85ENSTARG59822 May‐10 4/16/2010 5/17/2010 31 2,371 2,371 $2,048 $0.86ENSTARG59822Jun‐105/17/20106/15/2010291 6871 687$1 477$0 88ENSTARG59822Jun105/17/20106/15/2010291,6871,687$1,477$0.88ENSTARG59822 Jul‐10 6/15/2010 7/14/2010 29 1,263 1,263 $1,123 $0.89ENSTARG59822 Aug‐10 7/14/2010 8/12/2010 29 959 959 $878 $0.92ENSTARG59822 Sep‐10 8/12/2010 9/13/2010 32 1,187 1,187 $1,060 $0.89ENSTARG59822 Oct‐10 9/13/2010 10/12/2010 29 3,216 3,216 $2,686 $0.84ENSTARG59822 Nov‐10 10/12/2010 11/15/2010 34 6,182 6,182 $5,061 $0.82ENSTARG59822 Dec‐10 11/15/2010 12/13/2010 28 6,684 6,684 $5,463 $0.82Jan ‐ 09 to Dec ‐ 09 total:34,34834,3480$35,206$0Jan ‐ 10 to Dec ‐ 10 total:41,42941,4290$34,878$0$1.02$0.84Jan ‐ 09 to Dec ‐ 09 avg:Jan ‐ 10 to Dec ‐ 10 avg:Coffman Engineers, Inc.AkWarm No. CIRI-PAQ-CAEC-02Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Palmer Administration OfficeDraft Energy Audit Report$$3,000 $4,000 $5,000 $6,000 $7,000 3,0004,0005,0006,0007,0008,000Natural Gas Cost ($)Natural Gas Consumption (Therms)Administration Office ‐Natural Gas Consumption (Therms) vs. Natural Gas Cost ($)Natural Gas Consumption (Therms)Natural Gas Cost ($)$0 $1,000 $2,000 01,0002,000Date (Mon ‐Yr)Coffman Engineers, Inc.AkWarm No. CIRI-PAQ-CAEC-02Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Palmer Administration OfficeDraft Energy Audit ReportAdministration OfficeElectricityBtus/kWh =3,413Provider Customer #Month Start Date End Date Billing Days Consumption (kWh) Consumption (Therms) Demand Use Electric Cost ($) Unit Cost ($/kWh) Demand Cost ($)MEA E64000 Jan‐09 12/28/2008 1/27/20093065,9202,250182$9,870$0.15MEA E64000 Feb‐09 1/27/2009 2/25/20092962,4002,130183$9,397$0.15MEA E64000 Mar‐09 2/25/2009 3/25/20092855,6001,898170$8,409$0.15MEA E64000 Apr‐09 3/25/2009 4/27/20093360,0802,051169$8,246$0.14MEA E64000 May‐09 4/27/2009 5/27/20093050,0801,709162$6,979$0.14MEA E64000 Jun‐09 5/27/2009 6/25/20092953,4401,824162$7,393$0.14MEA E64000 Jul‐09 6/25/2009 7/28/20093359,3602,026152$7,642$0.13MEA E64000 Aug‐09 7/28/2009 8/26/20092964,8002,212165$8,337$0.13MEA E64000 Sep‐09 8/26/2009 9/28/20093365,7602,244171$8,478$0.13MEA E64000 Oct‐09 9/28/2009 10/27/20092959,7602,040172$7,460$0.12MEA E64000 Nov‐09 10/27/2009 11/28/20093269,7602,381172$8,562$0.12MEA E64000 Dec‐09 11/28/2009 12/28/20093059,5202,031162$7,384$0.12MEA E64000 Jan‐10 12/28/2009 1/26/20102961,1202,086170$7,016$0.11MEA E64000 Feb‐10 1/26/2010 2/23/20102857,3601,958174$6,659$0.12MEA E64000 Mar‐10 2/23/2010 3/28/20103364,9602,217160$7,351$0.11MEA E64000 Apr‐10 3/28/2010 4/27/20103058,8002,007158$6,229$0.11MEA E64000 May‐10 4/27/2010 5/25/20102855,6001,898156$5,925$0.11MEAE64000Jun‐105/25/20106/27/20103369 2002 362157$7 180$0 10MEAE64000Jun105/25/20106/27/20103369,2002,362157$7,180$0.10MEA E64000 Jul‐10 6/27/2010 7/27/2010 30 64,240 2,193 147 $6,710 $0.10MEA E64000 Aug‐10 7/27/2010 8/29/2010 33 72,960 2,490 167 $7,619 $0.10MEA E64000 Sep‐10 8/29/2010 9/27/2010 29 63,840 2,179 161 $6,747 $0.11MEA E64000 Oct‐10 9/27/2010 10/26/2010 29 65,280 2,228 152 $7,090 $0.11MEA E64000 Nov‐10 10/26/2010 11/28/2010 33 72,400 2,471 162 $7,827 $0.11MEA E64000 Dec‐10 11/28/2010 12/27/2010 29 67,200 2,294 158 $7,308 $0.11Jan ‐ 09 to Dec ‐ 09 total:726,48024,7952,022$98,156$0Jan ‐ 10 to Dec ‐ 10 total:772,96026,3811,922$83,661$0$0.14$0.11Jan ‐ 09 to Dec ‐ 09 avg:Jan ‐ 10 to Dec ‐ 10 avg:Coffman Engineers, Inc.AkWarm No. CIRI-PAQ-CAEC-02Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Palmer Administration OfficeDraft Energy Audit Report$4,000$6,000$8,000$10,000$12,00030,00040,00050,00060,00070,00080,000Electric Cost ($)Electric Consumption (kWh)Administration Office ‐Electric Consumption (kWh) vs. Electric Cost ($)Electric Consumption (kWh)Electric Cost ($)$0$2,000010,00020,000Date (Mon ‐Yr)Coffman Engineers, Inc.AkWarm No. CIRI-PAQ-CAEC-02Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Appendix B
AkWarm Commercial Reports
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Palmer Administration Office
ENERGY AUDIT REPORT – PROJECT SUMMARY – 3/29/2012 2:44 PM
General Project Information
PROJECT INFORMATION AUDITOR INFORMATION
Building: MSBSD - Palmer Administration Office
(Post Improvements)
Auditor Company: Coffman Engineers, Inc.
Address: 501 N. Gulkana Street Auditor Name: Walter Heins, PE, CCP, CxA, CEA
City: Palmer Auditor Address: 800 F Street
Anchorage, AK 99501 Client Name: Ricky Jensen
Client Address: Auditor Phone: (907) 276-6664
Auditor FAX: (907) 276-5042
Client Phone: (907) 864-2007 Auditor Comment:
Client FAX:
Design Data
Building Area: 44,754 square feet Design Heating Load: Design Loss at Space: 425,174
Btu/hour
with Distribution Losses: 447,551 Btu/hour
Plant Input Rating assuming 82.0% Plant Efficiency
and 25% Safety Margin: 682,243 Btu/hour
Note: Additional Capacity should be added for DHW
load, if served.
Typical Occupancy: 229 people Design Indoor Temperature: 70 deg F (building
average)
Actual City: Palmer Design Outdoor Temperature: -18 deg F
Weather/Fuel City: Palmer Heating Degree Days: 10,868 deg F-days
Utility Information
Electric Utility: Matanuska Electric Assn. -
Commercial - Lg
Natural Gas Provider: Enstar Natural Gas -
Commercial - Lg
Average Annual Cost/kWh: $0.122/kWh Average Annual Cost/ccf: $0.950/ccf
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 Palmer Administration Office Annual Energy Cost Estimate Description Space Heating Space Cooling Water Heating Lighting Other Electrical Cooking Clothes Drying Vent Fans Service Fees Total Cost Existing Building $26,736 $0 $1,448 $25,839 $57,022 $0 $0 $1,209 $0 $112,253 With Proposed Retrofits $18,381 $0 $1,462 $15,702 $54,799 $0 $0 $1,154 $0 $91,497 SAVINGS $8,356 $0 -$14 $10,137 $2,223 $0 $0 $55 $0 $20,756
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 Palmer Administration Office $0$20,000$40,000$60,000$80,000$100,000$120,000Existing RetrofitVentilation and FansSpace HeatingOther ElectricalLightingDomestic Hot WaterAnnual Energy Costs by End Use
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 Palmer Administration Office $0$20,000$40,000$60,000$80,000$100,000$120,000Existing RetrofitNatural GasElectricityAnnual Energy Costs by Fuel
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 Palmer Administration Office
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 Palmer Administration Office Annual Modeled Consumption (Blue) compared to Actual Electric (Left) and Natural Gas (Right) Consumption (Orange). Graph includes construction upgrades completed on the office building, including increased insulation to the gymnasium walls and the installation of a carbon dioxide detector on AHU-7.
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 Palmer Administration Office Monthly Modeled Consumption (Blue) compared to Actual Electric Consumption (Orange). Graph includes construction upgrades completed on the office building, including increased insulation to the gymnasium walls and the installation of a carbon dioxide detector on AHU-7.
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 Palmer Administration Office Monthly Modeled Consumption (Blue) compared to Actual Natural Gas Consumption (Orange). Graph includes construction upgrades completed on the office building, including increased insulation to the gymnasium walls and the installation of a carbon dioxide detector on AHU-7.
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
IT Server Portable Building 81
ENERGY AUDIT REPORT – PROJECT SUMMARY – Created 3/23/2012 10:54 AM
General Project Information
PROJECT INFORMATION AUDITOR INFORMATION
Building: MSBSD ‐ Palmer Administration Office ‐ IT
Portable
Auditor Company: Coffman Engineers, Inc.
Address: 501 N. Gulkana Street Auditor Name: Walter Heins, PE, CCP, CxA, CEA
City: Palmer Auditor Address: 800 F Street
Anchorage, AK 99501 Client Name: Ricky Jensen
Client Address: 501 N. Gulkana Street
Palmer, AK 99645
Auditor Phone: (907) 276‐6664
Auditor FAX: (907) 276‐5042
Client Phone: (907) 864‐2007 Auditor Comment:
Client FAX:
Design Data
Building Area: 960 square feet Design Heating Load: Design Loss at Space: 31,378
Btu/hour
with Distribution Losses: 34,864 Btu/hour
Plant Input Rating assuming 82.0% Plant Efficiency and
25% Safety Margin: 53,146 Btu/hour
Note: Additional Capacity should be added for DHW load,
if served.
Typical Occupancy: 0 people Design Indoor Temperature: 70 deg F (building average)
Actual City: Palmer Design Outdoor Temperature: -18 deg F
Weather/Fuel City: Palmer Heating Degree Days: 10,868 deg F-days
Utility Information
Electric Utility: Matanuska Electric Assn. -
Commercial - Lg
Natural Gas Provider: Enstar Natural Gas - Commercial -
Lg
Average Annual Cost/kWh: $0.120/kWh Average Annual Cost/ccf: $0.000/ccf
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 IT Server Portable Building 81 Annual Energy Cost Estimate Description Space Heating Space Cooling Water Heating Lighting Refrigeration Other Electrical Cooking Clothes Drying Ventilation Fans Service Fees Total Cost Existing Building $1,730 $0 $0 $136 $0 $7,679 $0 $0 $0 $0 $9,545 With Proposed Retrofits $1,642 $0 $0 $68 $0 $7,679 $0 $0 $0 $0 $9,389 SAVINGS $88 $0 $0 $69 $0 $0 $0 $0 $0 $0 $157
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 IT Server Portable Building 81 $0$2,000$4,000$6,000$8,000$10,000Existing RetrofitSpace HeatingOther ElectricalLightingAnnual Energy Costs by End Use
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 IT Server Portable Building 81 $0$2,000$4,000$6,000$8,000$10,000Existing RetrofitElectricityAnnual Energy Costs by Fuel
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 IT Server Portable Building 81
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
DTC Portable Building
ENERGY AUDIT REPORT – PROJECT SUMMARY – Created 3/23/2012 10:54 AM
General Project Information
PROJECT INFORMATION AUDITOR INFORMATION
Building: MSBSD ‐ Palmer Administration Office ‐
DTC Portable
Auditor Company: Coffman Engineers, Inc.
Address: 501 N. Gulkana Street Auditor Name: Walter Heins, PE, CCP, CxA, CEA
City: Palmer Auditor Address: 800 F Street
Anchorage, AK 99501 Client Name: Ricky Jensen
Client Address: 501 N. Gulkana Street
Palmer, AK 99645
Auditor Phone: (907) 276‐6664
Auditor FAX: (907) 276‐5042
Client Phone: (907) 864‐2007 Auditor Comment:
Client FAX:
Design Data
Building Area: 960 square feet Design Heating Load: Design Loss at Space: 25,469
Btu/hour
with Distribution Losses: 26,809 Btu/hour
Plant Input Rating assuming 82.0% Plant Efficiency and
25% Safety Margin: 40,867 Btu/hour
Note: Additional Capacity should be added for DHW load,
if served.
Typical Occupancy: 0 people Design Indoor Temperature: 69 deg F (building average)
Actual City: Palmer Design Outdoor Temperature: -18 deg F
Weather/Fuel City: Palmer Heating Degree Days: 10,868 deg F-days
Utility Information
Electric Utility: Matanuska Electric Assn. -
Commercial - Lg
Natural Gas Provider: Enstar Natural Gas - Commercial -
Lg
Average Annual Cost/kWh: $0.120/kWh Average Annual Cost/ccf: $0.000/ccf
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 DTC Portable Building Annual Energy Cost Estimate Description Space Heating Space Cooling Water Heating Lighting Refrigeration Other Electrical Cooking Clothes Drying Ventilation Fans Service Fees Total Cost Existing Building $3,372 $0 $0 $414 $0 $538 $0 $0 $0 $0 $4,324 With Proposed Retrofits $2,342 $0 $0 $139 $0 $538 $0 $0 $0 $0 $3,019 SAVINGS $1,030 $0 $0 $275 $0 $0 $0 $0 $0 $0 $1,305
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 DTC Portable Building $0$1,000$2,000$3,000$4,000$5,000Existing RetrofitSpace HeatingOther ElectricalLightingAnnual Energy Costs by End Use
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 DTC Portable Building $0$1,000$2,000$3,000$4,000$5,000Existing RetrofitElectricityAnnual Energy Costs by Fuel
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 DTC Portable Building
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Appendix C
Major Equipment List
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 MAJOR EQUIPMENT INVENTORY TAG LOCATION FUNCTION MAKE MODEL TYPE CAPACITY EFFICIENCY MOTOR SIZE ASHRAE SERVICE LIFE (YEARS) ESTIMATED REMAINING USEFUL LIFE (YEARS) B-1 BOILER RM BUILDING HEATING BURNHAM V1109 CAST IRON NATURAL GAS 2136 MBH ≈ 82% 30 ≈ 23 B-2 BOILER RM BUILDING HEATING THERMAL SOLUTIONS EVCA2000BN2-UAB MODULATING NATURAL GAS 2000 MBH ≈ 85% 30 ≈ 28 WH-1 BOILER RM DOMESTIC HW TRIANGLE TUBE SMART 80 INDIRECT 76 GAL - - 10 4 CP-1 BOILER RM HEATING WATER CIRC GRUNDFOS UMC 50-80 INLINE 35GPM 16' NEMA STANDARD 510 W 10 4 CP-1A BOILER RM HEATING WATER CIRC GRUNDFOS UMC 50-80 INLINE 35GPM 16' NEMA STANDARD 510 W 10 4 CP-2 BOILER RM HEATING WATER CIRC GRUNDFOS UPS 50-80/4F INLINE 28GPM 20' NEMA STANDARD 640 W 10 4 CP-2A BOILER RM HEATING WATER CIRC GRUNDFOS UPS 50-80/4F INLINE 28GPM 20' NEMA STANDARD 640 W 10 4 PMP-1 BOILER RM B-1 CIRC GRUNDFOS 80-160F INLINE - NEMA STANDARD 1500 W 10 4 PMP-2 BOILER RM B-1 BLENDING GRUNDFOS 40-80/F INLINE - NEMA STANDARD 440 W 10 4 PMP-3 BOILER RM B-2 CIRC GRUNDFOS ML90CB-2-182TC-C2 INLINE 100GPM 44’ 82.5% 3 HP VFD 10 4 PMP-4 BOILER RM B-2 BLENDING TACO - INLINE - 68% 3/4 HP 10 4 PMP-5 BOILER RM DHW CIRC GRUNDFOS UP 15-18SF INLINE - NEMA STANDARD 85 W 10 4 PMP-6 BOILER RM DHW BOILER CIRC GRUNDFOS UP 26-96F INLINE - NEMA STANDARD 205 W 10 4
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 MAJOR EQUIPMENT INVENTORY TAG LOCATION FUNCTION MAKE MODEL TYPE CAPACITY EFFICIENCY MOTOR SIZE ASHRAE SERVICE LIFE (YEARS) ESTIMATED REMAINING USEFUL LIFE (YEARS) PMP-7 BOILER RM UNIT HEATER GRUNDFOS UP 26-64F INLINE - NEMA STANDARD 185 W 10 4 AHU-1 RM 201 OFFICE HEAT PACE A-12/A-9F HORIZONTAL DISCHARGE 2153CFM 2.0" NEMA STANDARD 1.5 HP 25 0 AHU-2 RM 201 OFFICE VENT. PACE A-22AF HORIZONTAL DISCHARGE 12,896CFM 3.0" 64% 15 HP VFD 25 0 AHU-3 RM 202 OFFICE HEAT PACE A-12/A-9F HORIZONTAL DISCHARGE 2153CFM 2.0" NEMA STANDARD 1.5 HP 25 0 AHU-4 RM 202 OFFICE VENT. PACE A-22AF HORIZONTAL DISCHARGE 12,207CFM 3.0" NEMA STANDARD 15 HP VFD 25 0 AHU-5 RM 203 OFFICE HEAT PACE A-12/A-11F HORIZONTAL DISCHARGE 2696CFM 1.5” NEMA STANDARD 1.5 HP 25 0 AHU-6 RM 203 OFFICE VENT. PACE A-22AF HORIZONTAL DISCHARGE 13,122CFM 3.0" 91% 15 HP 25 0 AHU-7 FAN ROOM ASSEMBLY VENT/HEAT PACE B-15F HORIZONTAL DISCHARGE 9000CFM 1.0" 87.5% 5 HP 25 0 EF-4 FAN ROOM EXHAUST/ RETURN ASSEMBLY AAF SIZE 300 CENTRIFUGAL 7000CFM ≈ 80% 2 25 0
Palmer Administration Office Final Energy Audit Report Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02 MAJOR EQUIPMENT INVENTORY TAG LOCATION FUNCTION MAKE MODEL TYPE CAPACITY EFFICIENCY MOTOR SIZE ASHRAE SERVICE LIFE (YEARS) ESTIMATED REMAINING USEFUL LIFE (YEARS) EF-14 RM 201 OFFICE RESTROOM ILG FCB-925 UTILITY UPBLAST 417CFM 0.25" NEMA STANDARD 1/6 HP 25 0 EF-15 RM 201 OFFICE RESTROOM ILG FCB-925 UTILITY UPBLAST - NEMA STANDARD 1/6 HP 25 0 EF-18 RM 201 OFFICE RESTROOM ILG FCB-925 UTILITY UPBLAST - NEMA STANDARD 1/6 HP 25 0 EF-20 RM 201 OFFICE RESTROOM ILG FCB-925 UTILITY UPBLAST - NEMA STANDARD 1/6 HP 25 0 EF-21 RM 201 OFFICE RESTROOM ILG FCB-925 UTILITY UPBLAST - NEMA STANDARD 1/6 HP 25 0 RTU-1 ROOF PORTABLE81 COOLING YORK DH120COB4FAA3 ROOF MOUNTED - - - 15 10 RTU-2 ROOF PORTABLE81 COOLING YORK DH120COB4FAA3 ROOF MOUNTED - - - 15 10
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Appendix D
Energy Conservation Measures
Palmer Administration Office
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
The following tables consist of raw output data from the AkWarm Commercial program used to model
energy costs and calculate energy savings and financial ratios. These tables represent all of the energy
conservation measures calculated and considered by the energy audit team. However, ECMs included in
the Executive Summary and Section VIII are recommended by the energy audit team due to their viable
financial ratios (SIR>1) or due to their value added.
PRIORITY LIST – RECOMMENDED ENERGY CONSERVATION MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
0 a Refrigerators Replace residential & light
commercial
refrigerators/freezers older
than 5 years old
-- -<10
1 Setback
Thermostat:
Classroom/Office
Space
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
Classroom/Office Space.
$3,968 $667 76.82 0.2
2 Setback
Thermostat:
Storage/Intermitten
t Use
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
Storage/Intermittent Use
space.
$1,187 $667 22.97 0.6
3 Lighting: Private
Office
Replace with 2 FLUOR (2)
CFL, Spiral 20 W
$51 $120 6.21 2.4
4 Lighting: Private
Office
Add new Occupancy Sensor $29 $70 5.99 2.4
5 Other Electrical:
AHU-4 fan motor
Replace with AHU-4 $1,038 $1,404 4.58 1.4
6 Setback
Thermostat:
Multipurpose
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
Multipurpose space.
$178 $666 3.46 3.7
7 Lighting: Private
Office
Add new Occupancy Sensor $105 $495 3.11 4.7
8 Lighting: Staff
Rooms
Add new Occupancy Sensor $77 $400 2.80 5.2
9 Other Electrical:
AHU-2 fan motor
Replace with AHU-2 $629 $1,404 2.77 2.2
10 Lighting: Restroom Add new Occupancy Sensor $34 $200 2.52 5.8
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
PRIORITY LIST – RECOMMENDED ENERGY CONSERVATION MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
11 Lighting: Private
Office
Replace with 4 FLUOR (4)
T8 4' F32T8 32W Standard
(2) Program StdElectronic
and Add new Occupancy
Sensor
$135 $790 2.49 5.9
12 Lighting: Staff
Rooms
Replace with 4 FLUOR (2)
T8 4' F32T8 32W Standard
Program StdElectronic and
Add new Occupancy Sensor
$122 $850 2.10 7
13 Lighting: Large
Office
Replace with 4 FLUOR (4)
T8 4' F32T8 32W Standard
(2) Program StdElectronic
$96 $700 2.01 7.3
14 Ventilation Install CO2 sensors and E/P
transducers to AHU-2,
AHU-4, and AHU-6
$1,763 $12,000 1.89 6.8
15 Lighting: Staff
Rooms
Replace with 6 FLUOR (2)
T8 4' F32T8 32W Standard
(2) Program StdElectronic
and Add new Occupancy
Sensor
$140 $1,100 1.86 7.9
16 Lighting: Private
Office
Replace with 25 FLUOR (3)
T8 4' F32T8 32W Standard
Program StdElectronic and
Add new Occupancy Sensor
$590 $4,940 1.74 8.4
17 Lighting:
Conference Room
Replace with 71 FLUOR (2)
T8 4' F32T8 32W Standard
Program StdElectronic and
Add new Occupancy Sensor
$1,194 $11,400 1.53 9.5
18 Lighting: Assembly Add new Occupancy Sensor $100 $1,000 1.47 10
19 Lighting: Private
Office
Replace with 158 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic and Add new
Occupancy Sensor
$2,658 $31,205 1.24 11.7
20 Lighting: Restroom Replace with 3 FLUOR T8
4' F32T8 32W Standard
Program StdElectronic and
Add new Occupancy Sensor
$75 $900 1.22 12
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
PRIORITY LIST – RECOMMENDED ENERGY CONSERVATION MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
21 Lighting: Storage Replace with 4 FLUOR (2)
T8 4' F32T8 32W Standard
Program StdElectronic and
Add new Occupancy Sensor
$67 $900 1.08 13.5
22 Lighting: Exterior
Lighting
Replace with 4 LED 72W
Module StdElectronic
$207 $2,800 1.08 13.5
23 Lighting: Exterior
Lighting
Replace with 7 LED 72W
Module StdElectronic
$362 $4,900 1.08 13.5
24 Lighting: Corridor Replace with 23 FLUOR (2)
T8 4' F32T8 32W Standard
Program StdElectronic
$332 $4,600 1.06 13.8
25 Lighting: Restroom Replace with 17 FLUOR T8
4' F32T8 32W Standard
Program StdElectronic and
Add new Occupancy Sensor
$256 $3,550 1.05 13.9
26 Air Tightening Perform air sealing to reduce
air leakage by 20%.
$1,316 $11,500 1.02 8.7
27 Lighting: Large
Office
Replace with 256 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic
$3,082 $44,800 1.01 14.5
28 Other Electrical:
AHU-1 fan motor
Replace with AHU-1 $48 $381 0.78 8
29 Other Electrical:
AHU-3 fan motor
Replace with AHU-3 $48 $381 0.78 8
30 Other Electrical:
AHU-5 fan motor
Replace with AHU-5 $48 $381 0.78 8
31 Lighting: Private
Office
Replace with 8 FLUOR T8
4' F32T8 32W Standard
Program StdElectronic and
Add new Occupancy Sensor
$80 $1,580 0.74 19.6
32 Lighting: Storage Replace with 16 FLUOR (2)
T8 4' F32T8 32W Standard
Program StdElectronic and
Add new Occupancy Sensor
$158 $3,450 0.67 21.9
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
PRIORITY LIST – RECOMMENDED ENERGY CONSERVATION MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
33 Lighting: Kitchen Replace with 3 FLUOR (2)
T8 4' F32T8 32W Standard
Program StdElectronic
$18 $450 0.59 24.9
34 Lighting: Assembly
Storage
Replace with 8 FLUOR (2)
T8 4' F32T8 32W Standard
Program StdElectronic and
Add new Occupancy Sensor
$58 $1,500 0.55 25.8
35 Lighting: Restroom Replace with 4 FLUOR (2)
T8 4' F32T8 32W Standard
Program StdElectronic and
Add new Occupancy Sensor
$34 $1,000 0.49 29.7
36 Other Electrical:
Domestic Hot
Water Boiler Pump
Replace with Pump-6 $44 $600 0.45 13.8
37 Other Electrical:
Boiler Room Unit
Heater Pump
Replace with Pump-7 $39 $600 0.40 15.2
38 Lighting: Storage Replace with 4 FLUOR T8
4' F32T8 32W Standard
Program StdElectronic and
Add new Occupancy Sensor
$23 $900 0.37 39
39 Lighting: Kitchen Replace with 2 FLUOR T8
4' F32T8 32W Standard
Program StdElectronic
$8 $300 0.37 39.5
40 Other Electrical:
Building Heating
Supply Pump
Replace with 2 CP-1/CP-2 $109 $3,000 0.22 27.6
41 Other Electrical:
Building Heating
Supply Pump
Replace with 2 CP-2/CP-2A $136 $4,000 0.21 29.4
42 Lighting: Utility Replace with 2 FLUOR (2)
T8 4' F32T8 32W Standard
Program StdElectronic
$3 $300 0.16 88.7
43 Lighting: Utility Replace with 32 FLUOR T8
4' F32T8 32W Standard
Program StdElectronic
$34 $4,800 0.10 141.5
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
PRIORITY LIST – RECOMMENDED ENERGY CONSERVATION MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
44 Exterior Door:
Exterior Man
Doors
Remove existing door and
install standard pre-hung U-
0.16 insulated door,
including hardware.
$29 $13,972 0.05 488.6
45 Exterior Door:
Exterior Entrance
Doors
Remove existing door and
install standard pre-hung U-
0.16 insulated door,
including hardware.
$38 $18,629 0.05 489.4
46 Exterior Door:
Metal Doors -
Tractor Storage
Remove existing door and
install standard pre-hung U-
0.16 insulated door,
including hardware.
$11 $9,314 0.03 817.7
TOTAL $20,756 $209,566 1.27 10.1
a Due to advances in refrigerators in the previous 5 years, new Energy Star refrigerators are much more efficient and result in
viable energy savings.
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
ENERGY AUDIT REPORT – ENERGY EFFICIENT RECOMMENDATIONS
1. Building Envelope
Insulation
Rank Location Existing Type/R-Value Recommendation Type/R-
Value
Installed
Cost
Annual
Energy
Savings
Exterior Doors – Replacement
Rank Location Size/Type/Condition Recommendation Installed
Cost
Annual
Energy
Savings
44 Exterior Door:
Exterior Man
Doors
Door Type: Entrance,
Wood, solid core flush, 1-
3/4", half lite
Modeled R-Value: 2.2
Remove existing door
and install standard pre-
hung U-0.16 insulated
door, including hardware.
$13,972 $29
45 Exterior Door:
Exterior
Entrance Doors
Door Type: Entrance,
Wood, hollow core flush, 1-
3/4", no storm
Modeled R-Value: 2.2
Remove existing door
and install standard pre-
hung U-0.16 insulated
door, including hardware.
$18,629 $38
46 Exterior Door:
Metal Doors -
Tractor Storage
Door Type: Emergency
Exit, Steel, 1-3/4", 6'x6'8",
mineral wool
Modeled R-Value: 3
Remove existing door
and install standard pre-
hung U-0.16 insulated
door, including hardware.
$9,314 $11
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Air Leakage
Rank Location Estimated Air Leakage Recommended Air
Leakage Target
Installed
Cost
Annual
Energy
Savings
26 Air Tightness estimated as:
0.85 cfm/ft2 of above-grade
shell area at 75 Pascals
Perform air sealing to
reduce air leakage by
20%.
$11,500 $1,316
2. Mechanical Equipment
Mechanical
Setback Thermostat
Rank Location Size/Type/Condition Recommendation Installed
Cost
Annual
Energy
Savings
1 Classroom/Offic
e Space
Existing Unoccupied
Heating Setpoint: 70.0 deg
F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for
the Classroom/Office
Space.
$667 $3,968
2 Storage/Intermit
tent Use
Existing Unoccupied
Heating Setpoint: 70.0 deg
F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for
the Storage/Intermittent
Use space.
$667 $1,187
6 Multipurpose Existing Unoccupied
Heating Setpoint: 70.0 deg
F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for
the Multipurpose space.
$666 $178
Ventilation
Rank Recommendation Cost Annual
Energy
Savings
14 Install CO2 sensors and E/P transducers to AHU-2, AHU-4, and AHU-6 $12,000 $1,763
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
3. Appliances and Lighting
Lighting Fixtures and Controls
Rank Location Existing Recommended Installed
Cost
Annual
Energy
Savings
3 Private Office 2 INCAN (2) A Lamp, Std
60W with Manual
Switching
Replace with 2 FLUOR
(2) CFL, Spiral 20 W
$120 $51
4 Private Office 3 FLUOR (4) T8 4' F32T8
32W Standard (2) Program
StdElectronic with Manual
Switching
Add new Occupancy
Sensor
$70 $29
7 Private Office 22 FLUOR (2) T8 4' F32T8
32W Standard Program
StdElectronic with Manual
Switching
Add new Occupancy
Sensor
$495 $105
8 Staff Rooms 16 FLUOR (2) T8 4' F32T8
32W Standard Program
StdElectronic with Manual
Switching
Add new Occupancy
Sensor
$400 $77
10 Restroom 3 FLUOR (2) T8 4' F32T8
32W Standard Program
StdElectronic with Manual
Switching
Add new Occupancy
Sensor
$200 $34
11 Private Office 4 FLUOR (4) T12 4'
F40T12 40W Standard (2)
Magnetic with Manual
Switching
Replace with 4 FLUOR
(4) T8 4' F32T8 32W
Standard (2) Program
StdElectronic and Add
new Occupancy Sensor
$790 $135
12 Staff Rooms 4 FLUOR (3) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 4 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic and Add
new Occupancy Sensor
$850 $122
13 Large Office 4 FLUOR (4) T12 4'
F40T12 40W Standard (2)
Magnetic with Manual
Switching
Replace with 4 FLUOR
(4) T8 4' F32T8 32W
Standard (2) Program
StdElectronic
$700 $96
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
15 Staff Rooms 6 FLUOR (4) T8 4' F32T8
32W Standard (2) Program
StdElectronic with Manual
Switching
Replace with 6 FLUOR
(2) T8 4' F32T8 32W
Standard (2) Program
StdElectronic and Add
new Occupancy Sensor
$1,100 $140
16 Private Office 25 FLUOR (3) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 25 FLUOR
(3) T8 4' F32T8 32W
Standard Program
StdElectronic and Add
new Occupancy Sensor
$4,940 $590
17 Conference
Room
71 FLUOR (2) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 71 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic and Add
new Occupancy Sensor
$11,400 $1,194
18 Assembly 21 FLUOR (2) T8 4' F32T8
32W Standard Program
StdElectronic with Manual
Switching
Add new Occupancy
Sensor
$1,000 $100
19 Private Office 158 FLUOR (2) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 158
FLUOR (2) T8 4' F32T8
32W Standard Program
StdElectronic and Add
new Occupancy Sensor
$31,205 $2,658
20 Restroom 3 INCAN (3) A Lamp, Std
60W with Manual
Switching
Replace with 3 FLUOR
T8 4' F32T8 32W
Standard Program
StdElectronic and Add
new Occupancy Sensor
$900 $75
21 Storage 4 FLUOR (3) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 4 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic and Add
new Occupancy Sensor
$900 $67
22 Exterior
Lighting
4 MH 150 Watt Magnetic
with Manual Switching
Replace with 4 LED 72W
Module StdElectronic
$2,800 $207
23 Exterior
Lighting
7 MH 150 Watt Magnetic
with Manual Switching
Replace with 7 LED 72W
Module StdElectronic
$4,900 $362
24 Corridor 23 FLUOR (2) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 23 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic
$4,600 $332
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
25 Restroom 17 FLUOR T12 4' F40T12
40W Standard Magnetic
with Manual Switching
Replace with 17 FLUOR
T8 4' F32T8 32W
Standard Program
StdElectronic and Add
new Occupancy Sensor
$3,550 $256
27 Large Office 256 FLUOR (2) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 256
FLUOR (2) T8 4' F32T8
32W Standard Program
StdElectronic
$44,800 $3,082
31 Private Office 8 FLUOR T12 4' F40T12
40W Standard Magnetic
with Manual Switching
Replace with 8 FLUOR
T8 4' F32T8 32W
Standard Program
StdElectronic and Add
new Occupancy Sensor
$1,580 $80
32 Storage 16 FLUOR (2) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 16 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic and Add
new Occupancy Sensor
$3,450 $158
33 Kitchen 3 FLUOR (2) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 3 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic
$450 $18
34 Assembly
Storage
8 FLUOR (2) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 8 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic and Add
new Occupancy Sensor
$1,500 $58
35 Restroom 4 FLUOR (2) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 4 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic and Add
new Occupancy Sensor
$1,000 $34
38 Storage 4 FLUOR T12 4' F40T12
40W Standard Magnetic
with Manual Switching
Replace with 4 FLUOR
T8 4' F32T8 32W
Standard Program
StdElectronic and Add
new Occupancy Sensor
$900 $23
39 Kitchen 2 FLUOR T12 4' F40T12
40W Standard Magnetic
with Manual Switching
Replace with 2 FLUOR
T8 4' F32T8 32W
Standard Program
StdElectronic
$300 $8
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
42 Utility 2 FLUOR (2) T12 4'
F40T12 40W Standard
Magnetic with Manual
Switching
Replace with 2 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic
$300 $3
43 Utility 32 FLUOR T12 4' F40T12
40W Standard Magnetic
with Manual Switching
Replace with 32 FLUOR
T8 4' F32T8 32W
Standard Program
StdElectronic
$4,800 $34
Other Electrical Equipment
Rank Location Existing Recommended Installed
Cost
Annual
Energy
Savings
5 AHU-4 fan
motor
AHU-4 with Manual
Switching
Replace with AHU-4 $1,404 $1,038
9 AHU-2 fan
motor
AHU-2 with Manual
Switching
Replace with AHU-2 $1,404 $629
28 AHU-1 fan
motor
AHU-1 with Manual
Switching
Replace with AHU-1 $381 $48
29 AHU-3 fan
motor
AHU-3 with Manual
Switching
Replace with AHU-3 $381 $48
30 AHU-5 fan
motor
AHU-5 with Manual
Switching
Replace with AHU-5 $381 $48
36 Domestic Hot
Water Boiler
Pump
Pump-6 with Manual
Switching
Replace with Pump-6 $600 $44
37 Boiler Room
Unit Heater
Pump
Pump-7 with Manual
Switching
Replace with Pump-7 $600 $39
40 Building
Heating Supply
Pump
2 CP-1/CP-2 with Manual
Switching
Replace with 2 CP-1/CP-
2
$3,000 $109
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Appendix E
Energy Conservation Measures
IT Server Portable Building 81
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
The following tables consist of raw output data from the AkWarm Commercial program used to model
energy costs and calculate energy savings and financial ratios. These tables represent all of the energy
conservation measures calculated and considered by the energy audit team. However, ECMs included in
the Executive Summary and Section VIII are recommended by the energy audit team due to their viable
financial ratios (SIR>1) or due to their value added.
PRIORITY LIST – RECOMMENDED ENERGY CONSERVATION MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
1 Lighting: Exterior
Lighting
Replace with 2 LED 35W
Module StdElectronic
$54 $600 1.31 11.2
2 Air Tightening Perform air sealing to
reduce air leakage by 20%.
$88 $700 1.06 7.9
3 Lighting: Interior
Lighting
Replace with 14 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic
$15 $2,800 0.08 188
TOTAL $157 $4,100 0.43 26.2
ENERGY AUDIT REPORT – ENERGY CONSERVATION RECOMMENDATIONS
1. Building Envelope
Air Leakage
Rank Location Estimated Air Leakage Recommended Air Leakage
Target
Installed
Cost
Annual
Energy
Savings
2 Air Tightness estimated as: 0.80
cfm/ft2 of above-grade shell
area at 75 Pascals
Perform air sealing to
reduce air leakage by 20%.
$700 $88
3. Appliances and Lighting
Lighting Fixtures and Controls
Rank Location Existing Recommended Installed
Cost
Annual
Energy
Savings
1 Exterior Lighting 2 HPS 70 Watt Magnetic with
Manual Switching
Replace with 2 LED 35W
Module StdElectronic
$600 $54
3 Interior Lighting 14 FLUOR (2) T12 4' F40T12
40W Standard Magnetic with
Manual Switching
Replace with 14 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic
$2,800 $15
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Appendix F
Energy Conservation Measures
DTC Portable Building
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
The following tables consist of raw output data from the AkWarm Commercial program used to model
energy costs and calculate energy savings and financial ratios. These tables represent all of the energy
conservation measures calculated and considered by the energy audit team. However, ECMs included in
the Executive Summary and Section VIII are recommended by the energy audit team due to their viable
financial ratios (SIR>1) or due to their value added.
PRIORITY LIST – RECOMMENDED ENERGY CONSERVATION MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
1 Setback Thermostat:
Storage/Intermittent
Use
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for
the Storage/Intermittent
Use space.
$736 $1,000 8.65 1.4
2 Lighting: Exterior
Lighting
Replace with 2 LED 35W
Module StdElectronic
$54 $600 1.31 11.2
3 Air Tightening Perform air sealing to
reduce air leakage by 20%.
$294 $2,300 1.08 7.8
4 Lighting: Interior
Lighting
Replace with 14 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic and Add new
Occupancy Sensor
$214 $2,950 1.06 13.8
5 Lighting: Interior
Lighting
Improve Manual Switching $8 $200 0.57 25.6
TOTAL $1,305 $7,050 2.15 5.4
ENERGY AUDIT REPORT – ENERGY CONSERVATION RECOMMENDATIONS
1. Building Envelope
Air Leakage
Rank Location Estimated Air Leakage Recommended Air Leakage
Target
Installed
Cost
Annual
Energy
Savings
3 Air Tightness estimated as: 1.10
cfm/ft2 of above-grade shell
area at 75 Pascals
Perform air sealing to
reduce air leakage by 20%.
$2,300 $294
ENERGY AUDIT REPORT – ENERGY CONSERVATION RECOMMENDATIONS
3. Appliances and Lighting Building Envelope
Insulation
Rank Location Existing Type/R-Value Recommendation Type/R-
Value
Installed
Cost
Annual
Energy
Savings
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
2 Exterior Lighting 2 HPS 70 Watt Magnetic with
Manual Switching
Replace with 2 LED 35W
Module StdElectronic
$600 $54
4 Interior Lighting 14 FLUOR (2) T12 4' F40T12
40W Standard Magnetic with
Manual Switching
Replace with 14 FLUOR
(2) T8 4' F32T8 32W
Standard Program
StdElectronic and Add new
Occupancy Sensor
$2,950 $214
5 Interior Lighting 2 FLUOR T8 4' F32T8 32W
Standard Program
StdElectronic with Manual
Switching
Improve Manual Switching $200 $8
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Appendix G
Site Photos
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
1. Main Entrance 2. Multipurpose Meeting Area South East Wall
3. East Entry Way (Typical throughout the
school) 4. Typical Exterior Window
5. Typical Exterior Wall of Office Spaces 6. Looking South West Across Roof
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
7. Looking North East Across Roof 8. Boiler B-1
9. Boiler B-2 10. Circulation Pumps CP-1 and CP-1A
11. Circulation Pumps CP-2 and CP-2A 12. Domestic Hot Water Circulation Pump
PMP-5
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
13. B-2 Circulation Pump PMP-3 (Controlled by
VFD) 14. VFD that controls PMP-3
15. DHW Boiler Circ Pump PMP-6 and Boiler
Room Unit Heater Circ Pump PMP-7
16. Current renovation of gym into multipurpose
meeting area.
17. Air Compressor for Pneumatic Controls 18. AHU-7 in Second Floor Fan Room in Old
Gym
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
19. Office Heater AHU-1 in Mechanical
Penthouse (Typical of AHU-3 and AHU-5)
20. Office Ventilation AHU-6 in Mechanical
Penthouse (Typical of AHU-2 and AHU-4)
21. IT Portable Building 81, housing School
Districts Computer Servers 22. DTC Portable
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Appendix H
Thermographic Photos
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
Coffman Engineers made miscellaneous thermographic images of the Palmer Administration Office
building using a FLIR T300 Infrared Camera. This is not a thermographic study, rather photographs to
illustrate easy-to-identify heat losses. The outside temperature was 20F.
1. Optical Image, South West Gym Wall. Thermal Image below is indicated by the white
border.
2. Thermographic Image, South West Gym Wall. Temperatures indicated by color scale on right.
Yellow indicates heat leakage. The boiler room and second room fan rooms are un-insulated.
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
3. Optical Image, South Gym Wall. Thermal
Image to the right.
4. Thermographic Image, South Gym Wall.
Heat loss occurring through un-insulated
second floor fan room.
5. Optical Image, West Exterior Storage Door.
Thermal Image to the right.
6. Thermographic Image, Exterior Storage
Door. Heat loss occurring through poorly
insulated exterior storage door.
7. Optical Image, North Gym Wall on Roof.
Thermal Image to the right.
8. Thermographic Image, North Gym Wall on
Roof. Heat loss occurring through un-
insulated concrete wall.
Palmer Administration Office Final Energy Audit Report
Coffman Engineers, Inc. 6/12/2012 AkWarm No. CIRI-PAQ-CAEC-02
9. Optical Image, North Gym Wall. Thermal
Image to the right.
10. Thermographic Image, North Gym Wall.
Heat loss occurring through un-insulated
concrete wall.
11. Optical Image, Rooftop Mechanical
Penthouse. Thermal Image to the right.
12. Thermographic Image, Rooftop Mechanical
Penthouse. Heat loss occurring through un-
insulated concrete wall.
13. Optical Image, DTC Portable Door. Thermal
Image to the right.
14. Thermographic Image, Conference Portable
Door. Heat loss through weather stripping on
door.
End of Report