HomeMy WebLinkAboutASRC-AKP-RSA Maint and Operations 2012-EERichard S. Armstrong, PE, LLC
Mechanical/Electrical Engineer
Comprehensive Energy Audit
of
Maintenance and Operations Shop
Anaktuvuk Pass, Alaska
Project # ASRC!AKP!RSA!03
Prepared for:
North Slope Borough
Contact: Chris Dunbar, Assistant to Director Public Works
Phone: 907!852!0489
Barrow, Alaska
March 07, 2012
Prepared by:
Richard S. Armstrong, PE, LLC
2321 Merrill Field Drive, C$6
Anchorage, AK 99501
and
RSA Engineering, Inc.
2422 Arctic Blvd., Suite 200
Anchorage, AK 99503
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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TABLE OF CONTENTS
1. Report Disclaimers 3
2. Executive Summary 4
3. Audit and Analysis Background 6
4. Acknowledgements 8
5. Building Description & Function 9
6. Historic Energy Consumption 11
7. Energy Efficiency Measures Considered or Recommended 12
8. Interactive Effects of Projects 13
9. Loan Program 14
Appendix A: Photos 15
Appendix B: AkWarm!C Report 24
Appendix C: Building Schedules and Plans 33
Performed by: ___________________________
Tyler T. Gray, BSME, CEA
CEA # 1627
RSA Engineering, Inc.
Reviewed by: ___________________________
Richard Armstrong, PE, CEM
CEA #178, CEM # 13557
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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1. Report Disclaimers
The information contained in this report, including any attachments, is
intended solely for use by the building owner and the AHFC. No others
are authorized to disclose, copy, distribute or retain this report, in whole or
part, without written authorization from Richard S. Armstrong, PE, LLC,
2321 Merrill Field Drive, C$6, Anchorage, AK 99501. Additionally, this
report contains recommendations that, in the opinion of the auditor, will
cause the owner to realize energy savings over time. All
recommendations must be designed by a registered engineer, licensed in
the State of Alaska, in the appropriate discipline. Lighting
recommendations should all be first reviewed by running a lighting
analysis to assure that the recommended lighting upgrades will comply
with State of Alaska Statue as well as IES recommendations.
Payback periods may well vary from those forecast due to the uncertainty
of the final installed design, configuration, equipment selected, and
installation costs of recommended Energy Efficiency Measures (EEMs), or
the operating schedules and maintenance provided by the owner.
Furthermore, EEMs are typically interactive, so implementation of one
EEM may impact the cost savings from another EEM. Neither the auditor,
Richard S. Armstrong, PE, LLC, AHFC, or others involved in preparation of
this report will accept liability for financial loss due to EEMs that fail to
meet the forecasted payback periods.
This audit meets the criteria of an Investment Grade Audit (IGA) per the
Association of Energy Engineers definition, and is valid for one year. The
life of the IGA may be extended on a case$by$case basis, at the discretion
of the AHFC.
IGSs are the property of the State, and may be incorporated into AkWarm$
C, the Alaska Energy Data Inventory (ARIS), or other state and/or public
information system.
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Investment Grade Energy Audit
Anaktuvuk Pass Maintenance and Operations Shop
2. Executive Summary:
The Anaktuvuk Pass Maintenance and Operations Shop is a 16,021
square foot facility that was constructed around 1984. Construction
materials and methods are similar to those common with North
Slope Alaska USDW combined facilities constructed in the early
‘80s. A district heating system recovering heat from the power
house is installed in the facility. It is owned and operated by the
North Slope Borough (NSB) Public Works department. Benchmark
energy use data collected for this building is presented in Table 1
below:
Table 1
2009 2009 2010 2010
Utility Consumption Cost/Year Consumption Cost/Year
Electricity$kWh 195,308 $ 62,945 176,080 $ 53,510
No. 2 Fuel Oil $
Gallons
*7,715 $ *37,314 * 7,715 $ *37,314
Heat Recovery $
MMbtu
** 405 $ 0 ** 405 $ 0
Ttl Energy Costs $ 100,259 $ 90,824
* No historical record of fuel delivery to the facility were maintained by the owner or fuel
delivery company, fuel usage data is derived from AK$WarmC modeling.
** Heat recovery usage based on equipment sizing.
A benchmark measure of energy use relative to other similar function
buildings in the area is the Energy Use Index (EUI), which takes the
total annual energy used by the facility divided by the square footage
area of the building, for a value expressed in terms of kBTU/SF.
This number can then be compared to other buildings to see if it is
about average, higher or lower than similar buildings in the area.
Likewise, the Energy Cost Index (ECI) is the cost of all energy used
by the building expressed in $/SF of building area. The comparative
values for the subject building are listed in Table 2 below:
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Table 2
Anaktuvuk Pass
O&M Shop
Anaktuvuk Pass
Nunamuit School
Anaktuvuk Pass
Fire Station
Energy Use Index
(EUI) kBTU/SF
Avg 2009, 2010
132.3 128.07 163.5
Energy Cost Index
(ECI) Average
2009, 2010
$5.96 $5.99 $5.97
Various Energy Efficiency Measures (EEMs) have been analyzed for
this building to determine if they would be applicable for energy
savings with reasonably good payback periods. Those EEMs that
have a payback period or those that are recommended for code
compliance, life cycle replacement, or other reasons are also
included.
Specific EEMs recommended for this facility are detailed in the
attached AkWarm Energy Audit Report along with specific payback
times, as well as estimated installation costs and estimated energy
savings. The higher priority items are summarized below:
a. Replace Electromechanical Controls with Electronic
Building Automation System: The existing control system is
original to the building and has reached the end of its useful
life. Replacement parts for this type of system are
uncommon. There is no capability to provide low
temperature alarms, volatile organic compound (VOC)
monitoring, or nighttime setback. The building thermostats
are typically maintain a constant setpoint of 70 degrees F.
It is recommended that the control system be replaced
entirely with a building wide direct digital control system.
This will allow the user to easily and safely lower space
temperature setpoints, maintain tighter control over heat in
all areas of the building, and monitor building temperatures.
Total costs for a complete DDC retrofit are expected to be
offset by energy and maintenance savings in under 10
years. It is expected this system will need to be replaced in
the near future and costs associated with this EEM may be
offset by building maintenance funding.
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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b. Pumps: The main constant volume heating circulators for
the facility are out of production, oversized when compared
to the original building equipment schedules and may be
changed out for variable speed pumps. Variable speed
pumps can run at lower speeds when the facility has a low
heating demand, which will save power and reduce cost.
The main circulation pumps will be automatically turned off
when there is no call for heating, rather than run
continuously as currently set. This EEM energy saving is
expected to a payback in less than 8 years.
In addition to EEMs, various Energy Conservation Measures (ECMs)
are recommended that were not part of the energy audit model.
Some involve a modest capital investment. Others are policies or
procedures that are followed by management and employees that
require no capital outlay. Examples of recommended ECMs for this
facility include:
1. Turn off computers, monitors, printers, faxes, coffee
makers, etc when leaving the office for the day.
The priority recommendations in the detailed report estimate to save
$8,146/year, with an installed cost of $76,281, for a 9.4 year
payback. This does not include design or CA services, but overall it
does indicate a cost effective energy savings program.
3. Audit and Analysis Background:
a. Program Description: This audit included services to identify,
develop, and evaluate energy efficiency measures at the
subject building. The scope of this project included evaluating
the building shell, lighting, other electrical systems, and
heating, ventilating, and air conditioning (HVAC) equipment.
Measures were selected such that an overall simple payback
period of 8 years or less could be achieved.
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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b. Audit Description and Methodology: Preliminary audit
information was gathered in preparation for the site survey,
including benchmark utility consumption data, floor and lighting
plans, and equipment schedules where available. A site visit
was performed to inventory and evaluate the actual building
condition, including:
i. Building envelope (roof, windows, etc)
ii. Heating, ventilating, and air conditioning
iii. Lighting systems and controls
iv. Building specific equipment
v. Plumbing systems
c. Method of Analysis: The information gathered prior to the site
visit and at the site visit is entered into AkWarm$C, an energy
modeling developed for Alaska Housing Finance Corporation
(AHFC) specifically to identify forecasted energy consumption
which can be compared to actual energy consumption.
AkWarm$C also has some pre$programmed EEM retrofit
options that can be analyzed with energy savings forecasted
based on occupancy schedules, utility rates, building
construction type, building function, existing conditions, and
climatic data that is already uploaded to the program based on
the zip code of the building. When new equipment is
proposed, energy consumption is calculated based on
manufacturer’s cataloged information.
Cost savings are calculated based on the historical energy
costs for the building. Installation costs include labor and
equipment to estimate the full up$front investment required to
implement a change, but design and construction management
costs are excluded. Costs are derived from Means Cost Data,
industry publications, experience of the auditor, local
contractors and equipment suppliers. Maintenance savings
are calculated were applicable and are added to the energy
savings for each EEM.
The cost and savings are applied and a simple payback and
simple return on investment (ROI) is calculated. The simple
payback is based on the number of years that it takes for the
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savings to pay back the net installation cost (Net Installation
divided by Net Savings.)
A simple life$time calculation is shown for each EEM. The life$
time for each EEM is estimated based on the typical life of the
equipment being replaced or altered. The energy savings is
extrapolated throughout the life$time of the EEM. The total
energy savings is calculated as the total life$time multiplied by
the yearly savings.
d. Limitations of the Study: All results are dependent on the
quality of input data provided, and can only act as an
approximation. In some instances, several methods may
achieve the identified savings. This report is not intended as a
final design document. A design professional, licensed to
practice in Alaska and in the appropriate discipline, who is
following the recommendations, shall accept full responsibility
and liability for the results. Budgetary estimates for
engineering and design of these projects in not included in the
cost estimate for each measure, but these costs generally run
around 15% of the cost of the work.
4. Acknowledgements: We wish to acknowledge the help of numerous
individuals who have contributed information that was used to prepare
this report, including:
a. Alaska Housing Finance Corporation (Grantor): AHFC
provided the grant funds, contracting agreements, guidelines,
and technical direction for providing the audits. AHFC
reviewed and approved the final short list of buildings to be
audited based on the recommendation of the Technical
Service Provider (TSP).
b. North Slope Borough (Owner): The NSB provided building
access, original construction plans, energy billing data, building
schedules and functions, as well as other resources needed to
perform the audit.
c. Richard S. Armstrong, PE, LLC (Audit TSP): This is the
TSP who was awarded the projects in the Arctic Slope
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Regional Corporation, Bering Straits area, and the Nana area.
The firm gathered all relevant benchmark information provided
to them by Nortech, cataloged which buildings would have the
greatest potential payback, and prioritized buildings to be
audited based on numerous factors, including the Energy Use
Index (EUI), the Energy Cost Index (ECI), the age of the
building, the size of the building, the location of the building,
the function of the building, and the availability of plans for the
building. They also trained their selected sub$contracted
auditors, assigned auditors to the selected buildings, and
performed quality control reviews of the resulting audits. They
prepared a listing of potential EEMs that each auditor must
consider, as well as the potential EEMs that the individual
auditor may notice in the course of his audit. Richard S.
Armstrong, PE, LLC also performed some of the audits to
assure current knowledge of existing conditions.
5. Building Description and Function: The subject is called the
Anaktuvuk Pass Operation and Maintenance Shop, which was
constructed around 1984. The building serves as the headquarters
for the NSB Public Works department, including shop areas, heavy
equipment vehicle maintenance bays, and equipment storage for
Public Works and the School District. In addition to the industrial
spaces, this building includes administrative offices, breakroom, two
restrooms, a single occupancy sleeping quarters and multiple storage
and utility spaces. The facility is a 16,021 square feet two story steel
structure, supported on piling, gluelams, and the first floor deck is
entirely constructed of 8/12 glulam timbers side by side. The walls
and ceiling are wood framed with spray polyurethane insulation
injected into the cavities. Interior finishes are plywood and gypsum
board. Typically the building has high ceilings extending to the
underside of the hot roof assembly. Hallways, common areas, offices,
and various storage and utility rooms have ceilings heights ranging
from 10 to 14 feet. Underside of the building is coated in ~12”
polyurethane spray insulation; the exteriors are metal roofing and
siding. The roof insulation value is approximately R$38, the exterior
walls approximately R$19 and the floor is approximately R$30. The
overall building design and construction is similar to the other USDW
combined use facilities constructed in the early 80’s. The building is in
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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good condition considering its age. The building is occupied year
around to support public works operations.
a. Heating System: The facility heating plant is comprised of two
Burnham sectional cast iron boilers, Model # 4FRW.209.45.LB
with Carlin burners rated for 1941 MBH input and 1553 MBH
output. The boiler system is supplemented by a waste heat
recovery heat exchanger, Alfa Laval model M10$BFG plate and
frame style. Six Grundfos hydronic circulators distribute heat to
the radiant terminals and ventilation units. The pumps are
installed in a duplex configuration, providing 100% redundancy
to each of the three hydronic loops. The pumps are not
equipped with VFD drives, so they run at full speed at all times.
It was noted that installed pumps are not the models on the
original building schedule and 4 of them are oversized when
compared to the scheduled flow rates. Heat is distributed to
the building through multiple unit heaters, fintube convectors,
and ventilation units with hydronic coils. The control valves on
these heating terminals are a mix of thermostatic valves and
electric modulating valves. These controls are original to the
building and have reached the end of their useful lives. It is
likely that they require an exorbitant maintenance effort to keep
functioning properly. It is recommended that they be replaced
with new valves, sensors and be controlled with an electronic
building management system.
b. Ventilation System: There are nine (9) heat and vent (HV)
units in the building as well as multiple exhaust fans. HV$1
serves the shop, HV$2 serves the 1st floor offices and entry
areas, HV$3 & HV$4 serve the school district storage and
equipment bay areas, HV$5 serves the sewage truck bay, HV$6
serves the public works repair garage & storage areas, HV$7
serves the public works 2nd floor office, residence and
restroom, HV$8 serves the 2nd floor public works storage area,
and HV$9 serves the boiler and rooms. It was noted that some
of the heat and vent units had been manually switched off.
There are seven exhaust fans in the facility, serving restrooms,
storage, vehicle bay areas and a welding hood. These
exhaust fans are currently manually controlled. The air
handling equipment in this facility appears to be in good
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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condition considering the age of the equipment. It is
recommended that the ductwork and filters be cleaned, the fan
and hydronics be re$balanced and the controls replaced to
operate automatically. Heating of ventilation (outside) air is a
significant source of energy consumption for commercial
buildings. State of Alaska design codes mandate that certain
quantities of ventilation air must be provided; current electronic
building automatic control technologies and strategies can be
employed to regulate the introduction of ventilation air so
energy is not wasted.
c. Plumbing System: Water is provided from the village utility
and there is not any on$site storage or any metering of water
consumption. Fixtures include water closets, lavatories, single
head showers, mop sinks, and small sinks for cooking.
d. Domestic Hot Water: Hot water is generated using three AO
Smith electric water heaters located at individual fixtures and
bathroom groups.
e. Lighting: The lighting in the entire facility was recently
replaced with the Areawide High Efficiency Lighting project.
The occupied spaces typically were retrofit with T$8 fluorescent
fixtures, and T$8 high bay fixtures and new electronic ballasts
that are controlled with wall switches and occupancy sensors
where applicable. Exterior lighting was retrofitted with LED
lighting with photocells. No further lighting work is
recommended for this facility.
6. Historic Energy Consumption: Energy consumption is modeled
within the AkWarm$C program. The program only analyzes 12
months of data, so where 24 months of data are available, the data is
averaged and input to AkWarm$C to provide more accuracy. The
energy consumption data is presented and graphed in the attached
AkWarm$C program results.
Accurate electrical usage was received for this facility; however the
auditor made multiple attempts made to get fuel usage data which
ultimately failed. Some initial fuel data was received from Public
Works, however upon review of the data it was subsequently
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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discovered that the information was periodic fuel tank levels without
information as to how much fuel was added to the tank during that
period. The local village corporation who is responsible for delivering
the fuel was contacted, and they responded that they do not have
historical records for fuel delivery. The manager did state that he
recently implemented a program to have the amount of fuel delivered
recorded by the operators. Fuel data utilized for the purpose of this
model is estimated on similar buildings and estimated load. It is
important to know the fuel usage of the facilities, detailed records
should be maintained.
The average electric consumption for the building is 185,694
kWh/year at an average cost of $58,227/year. The average fuel oil
consumption is estimated at 7,715 gallons/year, at an average annual
cost of $37,314/year. The average heat recovery usage is estimated
at 405 million Btu at no cost. Refer to Table 1.
7. Energy Efficiency Measures Recommended: The building was
examined for application of a multitude of potential EEMs that are
discussed below. Those EEMs that appear to have an application for
the subject building are further analyzed for estimated payback
periods, either within the AkWarm$C program or separately within this
report. The accuracy of the cost estimates and paybacks varies
significantly due to a multitude of conditions, but is estimated to be
approximately +/$ 25%. Assumptions made regarding energy costs
and the life of the EEM, noting that post$construction measurement
and verification are based on energy savings, not energy cost
savings. Many of the selected EEMs are analyzed within the
AkWarm$C program using the schedules and estimated costs input
into the model.
a. Replace electro!mechanical zone control with electronic
building automation system: The existing control system is
original to the building and has reached the end of its useful
life. Replacement parts for this type of system are uncommon.
There is no capability to provide low temperature alarms,
volatile organic compound (VOC) monitoring, or nighttime
setback. The building thermostats are typically maintained a
constant setpoint of 70 degrees F. The heat and vent (HV)
units serving the various spaces as installed are manually
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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controlled to run continuously, or shutoff. In the event that a
unit is not operating during occupied hours, the occupants will
not have adequate ventilation air, which will affect comfort and
performance. A possible solution is to utilize new electric
actuators and sensors combined with a current microprocessor
based DDC system to make the air handler controls more
reliable. It is recommended that the control system be
replaced entirely with a building wide direct digital control
system. This will allow the user to easily and safely lower
space temperature setpoints, maintain tighter control over heat
in all areas of the building, and monitor building temperatures.
Total costs for a complete DDC retrofit are expected to be
offset by energy and maintenance savings in under 10 years.
It is expected this system would need to be replaced in the
near future and costs associated with this EEM may be offset
by building maintenance funding.
b. Replace existing Circulators with Variable Frequency
Drive Pumps: The current building circulators are constant
volume, are out of production, and are oversized when
compared to the original building equipment schedules.
Substantial energy savings can be realized with the installation
of variable frequency pumps designed to operate when
necessary to meet the building load. Variable speed pumps
can run at lower speeds when the facility has a low heating
demand, which will save power and reduce cost. The main
circulation pumps will be automatically turned off when there is
no call for heating, rather than run continuously as currently
set. This EEM energy saving is expected to a payback in less
than 8 years.
8. Interactive Effects of Projects: The AkWarm$C program calculates
savings assuming that all recommended EEM are implemented. If
some EEMs are not implemented, savings for the remaining EEMs will
be affected, in some cases positively, and in others, negatively. For
example, if the fan motors are not replaced with premium efficiency
motors, then the savings for the project to install variable speed drives
(VFDs) on the fans will be increased.
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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In general, all projects were evaluated sequentially so that energy
savings associated with one EEM would not be attributed to another
EEM as well. For example, the night setback EEM was analyzed
using the fan and heating load profile that will be achieved after
installation of the VFD project is completed. By modeling the
recommended projects sequentially, the analysis accounts for
interactive effects between the EEMs and does not “double count”
savings.
Interior lighting, plug loads, facility equipment, and occupants
generate heat within the building. When the building is in cooling
mode, these contribute to the overall cooling demands of the
building; therefore lighting efficiency improvements will reduce
cooling requirements on air conditioned buildings. Conversely,
lighting efficiency improvements are anticipated to increase heating
requirements slightly. Heating penalties are included in the lighting
project analysis that is performed by AkWarm$C.
9. Loan Program: The Alaska Housing Finance Corporation (AHFC)
Alaska Energy Efficiency Revolving Loan Fund (AEERLF) is a State of
Alaska program enacted by the Alaska Sustainable Energy Act
(senate Bill 220, A.S. 18.56.855, “Energy Efficiency Revolving Loan
Fund). The AEERLF will provide loans for energy efficiency retrofits
to public facilities via the Retrofit Energy Assessment for Loan System
(REAL). As defined in 15 AAC 155.605, the program may finance
energy efficiency improvements to buildings owned by:
a. Regional educational attendance areas;
b. Municipal governments, including political subdivisions of
municipal governments;
c. The University of Alaska;
d. Political subdivisions of the State of Alaska, or
e. The State of Alaska
Native corporations, tribal entities, and subsidiaries of the federal
government are not eligible for loans under this program.
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Appendix A: Photos
Exterior, view looking East
Exterior, view looking South
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Exterior, view looking West
Exterior, view looking North
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Fuel Oil Storage Tank
Heat and Vent unit (HV!1) with Electromechanical Valve
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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HV!1 Ventilation Serving Shop Shut Off
New T!8 Lighting ! Public Works Equipment Bay
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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New T!8 Lighting School District Storage Area
Stand By Generator
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Standby Generator ! No Controls on Exhaust/Return Dampers
Standby Generator Daytank and Fuel Oil Pumps
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Drypipe Sprinkler System Riser
Typical Electric Water Heater
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Typical Vehicle Bay Exhaust Fans
District Heat Recovery ! Plate and Frame Heat Exchanger
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Cast Iron Boilers ! Burnham 4FW 209 45 LB
Typical Hydronic Circulation Pumps ! Oversized
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Appendix B: AK Warm Energy Model
ENERGY AUDIT REPORT – PROJECT SUMMARY – Created 3/7/2012 1:26 PM
General Project Information
PROJECT INFORMATION AUDITOR INFORMATION
Building: Anaktuvuk Pass Maintenance and Operations Shop Auditor Company: RSA Engineering
Address: 1023 Access Road Auditor Name: Tyler Gray
City: Anaktuvuk Pass Auditor Address: 2522 Arctic Blvd. Ste 200
Anchorage, AK 99503 Client Name: NSB Public Works
Client Address: Auditor Phone: (907) 27630521
Auditor FAX:
Client Phone: (907) 66133511 Auditor Comment:
Client FAX:
Design Data
Building Area: 16,021 square feet Design Heating Load: Design Loss at Space: 522,626 Btu/hour
with Distribution Losses: 522,626 Btu/hour
Plant Input Rating assuming 82.0% Plant Efficiency and 25%
Safety Margin: 796,686 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: Anaktuvuk Pass Design Outdoor Temperature: 361.8 deg F
Weather/Fuel City: Anaktuvuk Pass Heating Degree Days: 18,873 deg F3days
Utility Information
Electric Utility: North Slope Borough Utilities 3 Commercial 3
Sm
Natural Gas Provider: None
Average Annual Cost/kWh: $0.317/kWh Average Annual Cost/ccf: $0.000/ccf
Annual Energy Cost Estimate
Description Space
Heating
Space
Cooling
Water
Heating Lighting Refrige
ration
Other
Electri
cal
Cooking Clothes
Drying
Ventilatio
n Fans
Service
Fees
Total
Cost
Existing
Building
$66,144 $0 $0 $17,543 $1,674 $5,078 $0 $0 $3,563 $180 $94,182
With
Proposed
Retrofits
$58,443 $0 $0 $17,276 $1,648 $5,001 $0 $0 $3,488 $180 $86,036
SAVINGS $7,702 $0 $0 $266 $25 $77 $0 $0 $75 $0 $8,146
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
1 Setback Thermostat:
107 3 Storage (under
stairs)
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
107 3 Storage (under stairs)
space.
$44 $250 2.49 5.6
2 Setback Thermostat:
203 3 Men
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
203 3 Men space.
$47 $263 2.49 5.6
3 Setback Thermostat:
205 3 Women
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
205 3 Women space.
$47 $263 2.49 5.6
4 Setback Thermostat:
114 3 Arctic Entry
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
114 3 Arctic Entry space.
$27 $151 2.49 5.6
5 Setback Thermostat:
101 3 Arctic Entry
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
101 3 Arctic Entry space.
$56 $315 2.49 5.6
6 Setback Thermostat:
105 3 Women
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
105 3 Women space.
$38 $216 2.48 5.6
7 Setback Thermostat:
113 3 Hall/Stair
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
113 3 Hall/Stair space.
$173 $981 2.48 5.7
8 Setback Thermostat:
103 3 Office
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
103 3 Office space.
$198 $1,120 2.48 5.7
9 Setback Thermostat:
212 3 Storage 1
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
212 3 Storage 1 space.
$263 $1,492 2.47 5.7
10 Setback Thermostat:
117 3 Stairs
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
117 3 Stairs space.
$71 $407 2.45 5.7
11 Setback Thermostat:
115 3 Mechanical
Room
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
115 3 Mechanical Room
space.
$286 $1,717 2.33 6
12 Setback Thermostat:
208 3 Mechanical
Room (upstairs)
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
208 3 Mechanical Room
(upstairs) space.
$402 $2,413 2.33 6
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
13 Setback Thermostat:
121 3 Sewage Truck
Storage
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
121 3 Sewage Truck Storage
space.
$380 $2,288 2.32 6
14 Setback Thermostat:
110 3 Vehicle
Maintenance Bay
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
110 3 Vehicle Maintenance
Bay space.
$560 $3,382 2.31 6
15 Setback Thermostat:
119 3 Welding
Hallway/Stair
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
119 3 Welding Hallway/Stair
space.
$139 $850 2.29 6.1
16 Setback Thermostat:
202 3 Utility Office
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
202 3 Utility Office space.
$110 $705 2.19 6.4
17 Setback Thermostat:
111 3 Storage
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
111 3 Storage space.
$174 $1,175 2.07 6.8
18 Setback Thermostat:
120 3 Welding
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
120 3 Welding space.
$137 $930 2.06 6.8
19 Setback Thermostat:
102 3 Office
Corridor/Stairway
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
102 3 Office
Corridor/Stairway space.
$23 $220 1.48 9.4
20 Setback Thermostat:
206 3 Lunchroom
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
206 3 Lunchroom space.
$243 $2,730 1.25 11.2
21 Setback Thermostat:
210 3 Storage 3
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
210 3 Storage 3 space.
$102 $1,167 1.22 11.5
22 Setback Thermostat:
211 3 Rack Storage
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
211 3 Rack Storage space.
$632 $7,275 1.21 11.5
23 HVAC And DHW Replace building hydronic
circulation pump with
variable speed pumps.
Existing pumps are oversized
for origional building design
flows.
$2,042 $15,000 1.14 7.3
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
24 Setback Thermostat:
209 3 Storage 2
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
209 3 Storage 2 space.
$418 $5,200 1.11 12.4
25 Setback Thermostat:
116 3 High Bay
Warehouse
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
116 3 High Bay Warehouse
space.
$240 $3,100 1.07 12.9
26 Setback Thermostat:
118 3 Public Works
Garage
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
118 3 Public Works Garage
space.
$905 $11,781 1.06 13
27 Setback Thermostat:
112 3 Wood Shop
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
112 3 Wood Shop space.
$389 $5,200 1.04 13.4
28 Setback Thermostat:
104 3 Men
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
104 3 Men space.
$0 $112 0.00 Infinity
29 Setback Thermostat:
106 3 Stair/Corridor
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
106 3 Stair/Corridor space.
$0 $500 0.00 Infinity
30 Setback Thermostat:
108 3 Office 2
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
108 3 Office 2 space.
$0 $550 0.00 Infinity
31 Setback Thermostat:
109 3 Shop (Vehicle
Maintenance Bay)
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
109 3 Shop (Vehicle
Maintenance Bay) space.
$0 $1,140 0.00 Infinity
32 Setback Thermostat:
201 3 Corridor
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
201 3 Corridor space.
$0 $818 0.00 Infinity
33 Setback Thermostat:
204 3 Janitor
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
204 3 Janitor space.
$0 $160 0.00 Infinity
34 Setback Thermostat:
207 3 Loft
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
207 3 Loft space.
$0 $2,410 0.00 Infinity
TOTAL $8,146 $76,281 1.34 9.4
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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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
Windows and Glass Doors – Replacement
Rank Location Size/Type/Condition Recommendation Installed
Cost
Annual
Energy
Savings
Air Leakage
Rank Location Estimated Air Leakage Recommended Air Leakage
Target
Installed
Cost
Annual
Energy
Savings
2. Mechanical Equipment
Mechanical
Rank Recommendation Installed
Cost
Annual
Energy
Savings
23 Replace building hydronic circulation pump with variable speed pumps. Existing pumps are
oversized for origional building design flows.
$15,000 $2,042
Setback Thermostat
Rank Location Size/Type/Condition Recommendation Installed
Cost
Annual
Energy
Savings
1 107 3 Storage (under
stairs)
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
107 3 Storage (under stairs)
space.
$250 $44
2 203 3 Men Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
203 3 Men space.
$263 $47
3 205 3 Women Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
205 3 Women space.
$263 $47
4 114 3 Arctic Entry Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
114 3 Arctic Entry space.
$151 $27
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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5 101 3 Arctic Entry Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
101 3 Arctic Entry space.
$315 $56
6 105 3 Women Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
105 3 Women space.
$216 $38
7 113 3 Hall/Stair Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
113 3 Hall/Stair space.
$981 $173
8 103 3 Office Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
103 3 Office space.
$1,120 $198
9 212 3 Storage 1 Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
212 3 Storage 1 space.
$1,492 $263
10 117 3 Stairs Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
117 3 Stairs space.
$407 $71
11 115 3 Mechanical
Room
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
115 3 Mechanical Room space.
$1,717 $286
12 208 3 Mechanical
Room (upstairs)
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
208 3 Mechanical Room
(upstairs) space.
$2,413 $402
13 121 3 Sewage Truck
Storage
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
121 3 Sewage Truck Storage
space.
$2,288 $380
14 110 3 Vehicle
Maintenance Bay
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
110 3 Vehicle Maintenance
Bay space.
$3,382 $560
15 119 3 Welding
Hallway/Stair
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
119 3 Welding Hallway/Stair
space.
$850 $139
16 202 3 Utility Office Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
202 3 Utility Office space.
$705 $110
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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17 111 3 Storage Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
111 3 Storage space.
$1,175 $174
18 120 3 Welding Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
120 3 Welding space.
$930 $137
19 102 3 Office
Corridor/Stairway
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
102 3 Office Corridor/Stairway
space.
$220 $23
20 206 3 Lunchroom Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
206 3 Lunchroom space.
$2,730 $243
21 210 3 Storage 3 Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
210 3 Storage 3 space.
$1,167 $102
22 211 3 Rack Storage Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
211 3 Rack Storage space.
$7,275 $632
24 209 3 Storage 2 Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
209 3 Storage 2 space.
$5,200 $418
25 116 3 High Bay
Warehouse
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
116 3 High Bay Warehouse
space.
$3,100 $240
26 118 3 Public Works
Garage
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
118 3 Public Works Garage
space.
$11,781 $905
27 112 3 Wood Shop Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
112 3 Wood Shop space.
$5,200 $389
28 104 3 Men Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
104 3 Men space.
$112 $0
29 106 3 Stair/Corridor Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
106 3 Stair/Corridor space.
$500 $0
30 108 3 Office 2 Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
108 3 Office 2 space.
$550 $0
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
32
31 109 3 Shop (Vehicle
Maintenance Bay)
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
109 3 Shop (Vehicle
Maintenance Bay) space.
$1,140 $0
32 201 3 Corridor Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
201 3 Corridor space.
$818 $0
33 204 3 Janitor Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
204 3 Janitor space.
$160 $0
34 207 3 Loft Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
207 3 Loft space.
$2,410 $0
Ventilation
Rank Recommendation Cost Annual
Energy
Savings
3. Appliances and Lighting
Lighting Fixtures and Controls
Rank Location Existing Recommended Installed
Cost
Annual
Energy
Savings
Refrigeration
Rank Location Existing Recommended Installed
Cost
Annual
Energy
Savings
Other Electrical Equipment
Rank Location Existing Recommended Installed
Cost
Annual
Energy
Savings
Cooking/Clothes Drying
Rank Recommended Installed
Cost
Annual
Energy
Savings
Anaktuvuk Pass M & O Shop Comprehensive Energy Audit
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Appendix C: Existing Plans