HomeMy WebLinkAboutASRC-PIZ-RSA Warm Storage 2012-EERichard S. Armstrong, PE, LLC
Comprehensive Energy Audit
Point Lay Warm Storage
Project # ASRC
The North Slope Borough
Department of Public Works
Richard S. Armstrong, PE, LLC
2321 Merrill Field Drive, C
Co
Richard S. Armstrong, PE, LLC
Mechanical/Electrical Engineer
Comprehensive Energy Audit
of
Point Lay Warm Storage Building
118 Tuttuniagvik St
Project # ASRC-PIZ-RSA-03
Prepared for:
The North Slope Borough
Department of Public Works
April 9th, 2012
Prepared by:
Richard S. Armstrong, PE, LLC
2321 Merrill Field Drive, C-6
Anchorage, Ak 99501
Co-Preparer: WHPacific, Inc.
1728 Ahkovak
Barrow, AK 99723
Point Lay Warm Storage Building Comprehensive Energy Audit
Point Lay Warm Storage Building Comprehensive Energy Audit
3
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
Point Lay Warm Storage Building Comprehensive Energy Audit
4
Investment Grade Energy Audit
Barrow Search and Rescue Fuel Building
1. Executive Summary: The Point Lay Warm Storage Building was
constructed in 2008 and has seen no major remodels since then.
Table 1
2010 2010 2011 2011
Utility Consumption Cost/Year Consumption Cost/Year
Electricity-kWh 135,708 $32,570 135,708 $32,570
#2 Fuel Oil - Gallons 17,044 $72,438 17,044 $72,438
Total Energy Costs $105,007 $105,007
NOTE: 2010 and 2011 utilities are averaged due to sporadic meter reads.
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:
Table 2
Warm Storage
Building
Point Lay
Average
Fire Station
Energy Use Index (EUI)
kBTU/SF Avg 2010, 2011
344
40 31
Energy Cost Index (ECI)
Average 2010, 2011
$12.68 $3.51 $2.72
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. Also, where a lighting upgrade is recommended from T-12
lamps with magnetic ballasts to T-8 lamps with electronic ballasts,
then the entire facility should be re-lamped and re-ballasted to
maintain a standard lighting parts inventory, regardless of the
Point Lay Warm Storage Building Comprehensive Energy Audit
5
payback. For example, a storage room that is infrequently used may
not show a very good payback for a lighting upgrade, but
consistency dictates a total upgrade.
Specific EEMs recommended for this facility are summarized below,
and are detailed in the attached AkWarm Energy Audit Report along
with specific payback times, as well as estimated installation costs
and estimated energy savings. Several of the EEMs are not modeled
in the AkWarm-C program because they will require engineering to
determine costs and payback once the technical savings are
estimated. The higher priority items are summarized below:
a. Lighting Control Upgrades: During the audit, almost all of
the building’s lights were found to be left on with nobody in
the space. Occupant controls sense the presence of
occupants, turn the lights on at a pre-determined level, and
then turn the lights off after a programmed time period of no
occupancy. It is recommended that motion-sensing
occupancy sensors be installed in the existing duplex switch
boxes for all offices, corridors, and stairwells, and that
ceiling-mounted dual-technology sensors be installed where
obstacles may interfere with line-of-sight sensors, such as in
lavatories, corridors, vehicle bays, and storage areas. The
second technology in these sensors activates lighting based
on sound. These controls can reduce total kWh
consumption for the lighting in the order of 30-90%,
depending on the amount of time the lights are manually left
on.
b. Unoccupied Thermostat Setbacks: The subject building is
typically only occupied less than 30% of the time. Keeping
the building heated to 70°F during the other 70% of the time
is an unnecessary waste of fuel. It is recommended that a
programmable heating setback thermostat be installed in
each space. These thermostats should be set to 55°F
during unoccupied periods. For a small installation cost, this
measure may save up to $26,000 per year in heating costs.
c. Exterior Lighting Upgrades: The exterior high pressure
sodium lights operate during periods of darkness, which is
Point Lay Warm Storage Building Comprehensive Energy Audit
6
about half of the year. It is estimated that the use of LED
exterior lights can reduce the power consumption by 60%
and extend bulb replacement frequency to 5-10 years,
yielding an even better payback by reducing maintenance
costs.
d. Hydronic Heating System Adjustments: The hot glycol
circulation system in this building was designed for optimal
heat transfer to the building’s occupied spaces. However, it
was found that the pumps’ settings were changed from the
design settings. The specific changes required to return the
system to optimal performance are detailed in the attached
AkWarm report in Appendix B, but the three general
problems and solutions are described below.
- Change redundant pumps back to “auto”. Each glycol
loop was designed to have a redundant pump. If the
first pump needs servicing, the second pump turns on
automatically, and the two pumps are never supposed
to work simultaneously. Multiple pump sets were
found to be on 24/7. This excess flow creates heat
control problems and poor efficiency in heat
distribution. The secondary pump in each set should
be turned to “auto” so it will only come on when the
first stops.
- Change speed settings back to speed “2”. Each glycol
pump in this building is a three-speed pump, and most
were designed to run at speed “2”. Some of these
have been switched to run at speed “3”, causing the
excess flow problem described above. These pumps
should be set back to their design speed of “2”.
- Turn off unused pumps. Pump “CP-7” was installed on
a large heat exchanger that is to be hooked-up to a
waste heat loop from the power plant. However, this
waste heat loop is not yet in place, and CP-7 is
running continuously anyway. This pump should be
shut off until the waste heat loop is installed to prevent
wasting energy and wearing-out the pump.
Point Lay Warm Storage Building Comprehensive Energy Audit
7
e. Air Infiltration: In mixed use, vehicle maintenance and
storage facilities such as the subject building, it is typical
that the overhead doors are opened and left open for long
periods of time, even during the winter months. A single
overhead door left open will cause a vehicle bay’s heaters
to run at full capacity in an attempt to maintain temperature.
All this heat is lost to the outside as long as the door is
open. This is an effective loss of 1.5 – 2.6 gallons of fuel oil
per hour per unit heater. It is recommended that automatic
door closers be installed with integral personnel safety
sensors, set to close the overhead door 1-3 minutes after
opening. This increased frequency of door opening and
closings will increase energy usage by the door openers but
will be easily made-up in heating savings.
In addition to EEMs, various Energy Conservation Measures (ECMs)
are recommended since they are policies or procedures that are
followed by management and employees that require no capital
outlay. Examples of recommended ECMs for this facility include:
• Turn off lights when leaving a room that is not controlled by an
occupancy sensor that automatically turns off lights.
• Turn off computers, monitors, printers, faxes, coffee makers,
etc when leaving the office for the day.
• Keep overhead doors closed except when they are required to
be open for movement of vehicles.
The 13 priority recommendations in the detailed report estimate to save
$29,932/year, with an installed cost of $13,631. This does not include
design or CA services, but overall it does indicate a cost effective
energy savings program.
2. 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
Point Lay Warm Storage Building Comprehensive Energy Audit
8
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.
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 is
then 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.
Point Lay Warm Storage Building Comprehensive Energy Audit
9
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
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.
3. 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
sizing information, two years energy billing data, building
Point Lay Warm Storage Building Comprehensive Energy Audit
10
schedules and functions, as well as building age. Price Brower,
manager of the facility, was very helpful in offering any
assistance requested during the audit.
c. Nortech Engineering (Benchmark TSP): Nortech
Engineering compiled the data received from the NSB and
entered that data into the statewide building database, called
the Alaska Retrofit Information System (ARIS).
d. Richard S. Armstrong, PE, LLC (Audit TSP): This is the TSP
who was awarded the projects in the Arctic Slope 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.
e. WHPacific, Inc (Audit Preparer): This firm specializes in
mechanical, electrical, and civil design, and has one
mechanical EIT who is a Certified Energy Auditor in Training.
This CEIT has received additional training from Richard S.
Armstrong, PE, LLC to acquire further specific information
regarding audit requirements and potential EEM applications.
WHPacific prepared this audit and submitted it for review by
Richard S. Armstrong, PE, LLC.
4. Building Description and Function: The subject structure is called
the Point Lay Warm Storage Facility. It was constructed in 2008 and
Point Lay Warm Storage Building Comprehensive Energy Audit
11
has had no major remodels since then. The building is mostly a 1-
story high-bay structure divided into 4 vehicle and equipment bays
with a 2 story office and mechanical mezzanine on the east end. The
principle function of the building is as an office, warm storage, and
vehicle maintenance shop for the local NSB Public Works
Department.
a. Heating System: The building heating system consists of two
Burnham model V910A, 1528 MBH cast iron boilers and one
Energy Logic model EL-200H, 160 MBH waste oil burner. The
waste oil burner distributes heat by way of an ½-hp fan and
operates on used oil from NSB and village vehicles. This self-
contained unit operates when the used oil is available, which is
over 80% of the time. The hot glycol from the boilers is
distributed among three loops – each with a primary and
secondary Grundfos 3-speed circulation pump. The first loop
serves the baseboard and cabinet heaters in the office area,
the second loop serves heating coils in the 13 unit heaters and
two make-up air units, and the third loop serves as heat trace
for the building’s buried utilities. Each bay is equipped with at
least two destratification fans that keep the heat from settling
near the ceiling.
b. Ventilation System: The building has 4 exhaust fans totaling
2905 CFM, two make-up air units totaling 5280 CFM, and one
AHU which uses 165 CFM of outside air. There are no heat
exchangers in the exhaust system, but the ventilation control
system is still in place and operating and minimizes the amount
of conditioned air that is expelled from the building.
c. Plumbing System: Two Toilets, one shower, and three sinks
are provided for the workers. There is also a washer and dryer
provided for washing work clothing. Each bay is plumbed with
multiple floor drains that drain to a sump where the graywater
is pumped into the building’s sewage system.
d. Lighting: Building-wide lighting consists of T8 lamps mounted
in wraparound wall, caged ceiling, recessed ceiling, and high
bay pendant fixtures. The exterior lights are 250 watt HPS wall
packs.
Point Lay Warm Storage Building Comprehensive Energy Audit
12
5. 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.
The average electric consumption for the building is 135,708
kWh/year at an average cost of $32,570/year. The average fuel oil
consumption was 17,044 gal/year, at an average annual cost of
$72,437/year.
6. Energy Efficiency Measures considered or recommended: The
building was examined for application of a multitude of potential
EEMs. 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.
General EEM categories were discussed in this report’s executive
summary. Each specific EEM is detailed in the attached AkWarm-C
report that comprises Appendix B.
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.
7. 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.
Point Lay Warm Storage Building Comprehensive Energy Audit
13
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.
8. 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.
Appendix A: Photos
The north side of the Warm Storage Building as seen from the NE corner
The north side of the building. Bays are numbered from left to right, with the first
two bays having two overhead doors each.
Appendix A: Photos
15
The south face of the building as seen from the east side. The double doors on
the right lead to the boiler room.
View of the inside of Bay 4
looking towards the south
door.
Appendix A: Photos
16
View of the inside of Bay 2 looking towards the north doors.
Bay 1 seen from the northeast corner. Mechanical mezzanine is in the far corner.
Appendix A: Photos
17
Bay 1 as seen from the mechanical mezzanine
Used oil burner (lower left corner of
previous photo) name plate
Appendix A: Photos
18
10-Ton track-mounted overhead crane in Bay 1
Boilers 1 and 2 in boiler room at the building’s southeast corner
Appendix A: Photos
19
Waste heat exchanger
in boiler room. Waste
heat loop has yet to be
installed.
Appendix A: Photos
20
Thermostat in unoccupied
boiler room set to 84°F
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Point Lay Warm Storage
Page 21
21
ENERGY AUDIT REPORT – PROJECT SUMMARY – Created 4/10/2012 4:59 PM
General Project Information
PROJECT INFORMATION AUDITOR INFORMATION
Building: Point Lay Warm Storage Auditor Company: Richard S. Armstrong, LE, LLC
Address: 118 Tuttuniagvik St. Auditor Name: Richard S. Armstrong, David Robbins
City: Point Lay Auditor Address: 2321 Merril Field Drive C-6
Anchorage, AK 99501 Client Name: Julius Rexford
Client Address: PO Box
118 Tuttuniagvik St
Point Lay, AK 99579
Auditor Phone: (907) 229-0331
Auditor FAX:
Client Phone: (907) 833-2214 Auditor Comment:
Client FAX:
Design Data
Building Area: 8,281 square feet Design Heating Load: Design Loss at Space: 1,078,247
Btu/hour
with Distribution Losses: 1,684,761 Btu/hour
Plant Input Rating assuming 82.0% Plant Efficiency and 25%
Safety Margin: 2,568,233 Btu/hour
Note: Additional Capacity should be added for DHW load, if
served.
Typical Occupancy: 5 people Design Indoor Temperature: 70.4 deg F (building average)
Actual City: Point Lay Design Outdoor Temperature: -37 deg F
Weather/Fuel City: Point Lay Heating Degree Days: 19,109 deg F-days
Utility Information
Electric Utility: North Slope Borough Utilities - Commercial -
Lg
Natural Gas Provider: None
Average Annual Cost/kWh: $0.302/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
$136,83
9
$0 $2,921 $6,293 $2,046 $2,457 $0 $0 $1,370 $180 $152,106
With
Proposed
Retrofits
$111,48
6
$0 $2,929 $2,118 $1,902 $2,285 $0 $0 $1,274 $180 $122,175
SAVINGS $25,353 $0 -$8 $4,175 $144 $173 $0 $0 $96 $0 $29,932
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Point Lay Warm Storage
Page 22
22
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Point Lay Warm Storage
Page 23
23
PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
1 HVAC And DHW Change pump settings back to
design specs.
$3,463 $1 7608.75 0
2 Setback Thermostat:
Offices/breakrooms/hal
ls
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Offices/breakrooms/halls
space.
$2,731 $5 7326.38 0
3 Setback Thermostat:
Bays 1 and 2
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Bays 1 and 2 space.
$11,904 $200 798.33 0
4 Setback Thermostat:
Bays 3 and 4
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Bays 3 and 4 space.
$7,095 $200 475.82 0
5 Setback Thermostat:
Storage/workrooms
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Storage/workrooms space.
$1,721 $200 115.42 0.1
6 Setback Thermostat:
Mechanical Mezzanine
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Mechanical Mezzanine space.
$1,432 $200 96.05 0.1
7 Lighting: Exterior HPS
door lighting
Replace with 10 LED 67W
Module StdElectronic
$834 $6,500 1.43 7.8
8 Lighting: Exterior HPS
bull rail lighting
Replace with 6 LED 72W
Module StdElectronic
$469 $4,000 1.30 8.5
9 Lighting: 3t T8 Remove Manual Switching
and Add new Occupancy
Sensor
$17 $325 0.16 19.2
10 Lighting: 6t T8 Improve Manual Switching $42 $850 0.15 20.2
11 Setback Thermostat:
Boiler room
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Boiler room space.
$0 $200 0.00 Infinity
12 Lighting: 2t T8 cage Remove Manual Switching
and Add new Occupancy
Sensor
$43 $350 -0.19 8.2
13 Lighting: 2t T8 wrap Remove Manual Switching
and Add new Occupancy
Sensor
$181 $600 -0.48 3.3
TOTAL $29,932 $13,631 26.09 0.5
ENERGY AUDIT REPORT – ENERGY EFFICIENT RECOMMENDATIONS
1. Building Envelope
Insulation
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Point Lay Warm Storage
Page 24
24
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
1 Change pump settings back to design specs. $1 $3,463
Setback Thermostat
Rank Location Size/Type/Condition Recommendation Installed
Cost
Annual
Energy
Savings
2 Offices/breakrooms/h
alls
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Offices/breakrooms/halls
space.
$5 $2,731
3 Bays 1 and 2 Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Bays 1 and 2 space.
$200 $11,904
4 Bays 3 and 4 Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Bays 3 and 4 space.
$200 $7,095
5 Storage/workrooms Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Storage/workrooms space.
$200 $1,721
6 Mechanical
Mezzanine
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Mechanical Mezzanine space.
$200 $1,432
11 Boiler room Existing Unoccupied Heating
Setpoint: 84.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 55.0 deg F for the
Boiler room space.
$200 $0
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Point Lay Warm Storage
Page 25
25
Ventilation
Rank Recommendation Cost Annual
Energy
Savings
3. Appliances and Lighting
Lighting Fixtures and Controls
Rank Location Existing Recommended Installed
Cost
Annual
Energy
Savings
7 Exterior HPS door
lighting
10 HPS 150 Watt StdElectronic
with On/Off Photoswitch
Replace with 10 LED 67W
Module StdElectronic
$6,500 $834
8 Exterior HPS bull rail
lighting
6 HPS 150 Watt StdElectronic
with On/Off Photoswitch
Replace with 6 LED 72W
Module StdElectronic
$4,000 $469
9 3t T8 10 FLUOR (3) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$325 $17
10 6t T8 6 FLUOR (6) T8 4' F32T8 32W
Standard (2) Instant StdElectronic
with Manual Switching
Improve Manual Switching $850 $42
12 2t T8 cage 12 FLUOR (2) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$350 $43
13 2t T8 wrap 51 FLUOR (2) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$600 $181
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
Subject building's north face
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Point Lay Warm Storage
Page 26
26
Subject building's equipment bays. Numbered from left to right. Bays 1 and 2
have two overhead doors each
Subject building's south face
Bay 4, facing south
Bay 2, facing north
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Point Lay Warm Storage
Page 27
27
Bay 1, facing south with mechanical mezzanine in far corner
Bay 1 as seen from mechanical mezzanine
Used oil burner name plate
10-ton overhead crane
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Point Lay Warm Storage
Page 28
28
Boilers 1 and 2 in boiler room
Heat exchanger for future waste heat loop from power plant
Glycol pump CP-7 is at top of image. Running at full speed 24/7 despite lack
of waste heat loop.
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Point Lay Warm Storage
Page 29
29
Thermostat in unoccupied boiler room set to 84F.
------------------------------------------
AkWarmCalc Ver 2.1.4.2, Energy Lib 3/1/2012
Appendix C: Equipment Schedules - Mechanical 30
Appendix C: Equipment Schedules - Mechanical 31
Appendix C: Equipment Schedules - Mechanical 32
Appendix D: Building Plan 33
Appendix D: Building Plan 34
Appendix E: Lighting Plan 35
Appendix E: Lighting Plan 36
Appendix E: Lighting Plan 37
Appendix F: Mechanical Schematics 38
Appendix F: Mechanical Schematics 39
Appendix F: Mechanical Schematics 40
Appendix F: Mechanical Schematics 41
Appendix F: Mechanical Schematics 42
Appendix F: Mechanical Schematics 43
Appendix F: Mechanical Schematics 44
Appendix F: Mechanical Schematics 45
Appendix F: Mechanical Schematics 46
Appendix F: Mechanical Schematics 47