HomeMy WebLinkAboutASRC-BRW-RSA Barrow Search and Rescue Hangar 2012-EERichard S. Armstrong, PE, LLC
Comprehensive Energy Audit
Barrow Search and Rescue
1797 and 1799 Ahkovak
Project #
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
Barrow Search and Rescue Hangar Building
1797 and 1799 Ahkovak
Project # ASRC-BRW-RSA-06
Prepared for:
The North Slope Borough
Department of Public Works
February 17, 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
Barrow Search and Rescue
Barrow Search and Rescue 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
Barrow Search and Rescue Building Comprehensive Energy Audit
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Investment Grade Energy Audit
Barrow Search and Rescue Hangar Building
1. Executive Summary: The Barrow Search and Rescue Hangar
Building was originally constructed in 1984 and has seen no major
remodels since then.
Table 1
2010 2010 2011 2011
Utility Consumption Cost/Year Consumption Cost/Year
Electricity-kWh 264,840 $29,560 289,200 $31,062
Natural Gas-CCF
Hangar and Offices
39,478 $12,037 43,167 $13,209
Total Energy Costs $41,597 $44,272
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
Search & Rescue
Building
Barrow Avg Fire Station #1
Energy Use Index (EUI)
kBTU/SF Avg 2009, 2010
384 211 207
Energy Cost Index (ECI)
Average 2009, 2010
3.06 $1.68 $1.92
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
Barrow Search and Rescue Building Comprehensive Energy Audit
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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. Fluorescent Lighting Upgrades: The offices and other low
spaces have a mixture of T12 and T8 lamps with mostly
magnetic ballasts. The AkWarm-C program models these
lamps and shows the payback period if all lamps are changed
to T8s with electronic programmable ballasts. It is
recommended that all T12 lamps be retrofitted to T8 with
electric ballasts for lamp and ballast standardization regardless
of the payback period Typical savings in power consumption
varies 10-30% with this upgrade.
b. Lighting Control Upgrades: Many lights were found to be left
on with nobody in the space. Occupant controls can sense the
presence of workers, and turn the lights on. The occupancy
controller can then turn the lights off after a programmed time
period of no occupancy. 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.
c. Illumination Intensity Reduction: The office spaces,
workrooms, stairs, and vestibules were found to have
illumination intensities 2-4 times those recommended in the
Lighting Illumination Society commonly accepted standards. In
some cases, reducing the number of lamps in the fixtures
would give an instant payback of $200 per year. In other
cases, it is recommended that the number of fixtures be
reduced and bi-level switches with occupancy sensors be
installed. These measures can reduce the total kWh
consumption for these areas by 50-75%.
Barrow Search and Rescue Building Comprehensive Energy Audit
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d. Hangar Lighting: While the S&R personnel are good about
turning off the lights when the building is unoccupied, the HPS
lamps require several minutes to restrike and so are typically
left on all day long, even if the hangar is not being used. When
it is in use, not all areas of the hangar need to be lit, and locally
controlled fixtures with individual motion sensors will provide
light only where it is needed. It is recommended that all hangar
HPS lights be changed to T5 high-output fluorescent. These
lamps light instantly, so they can be controlled by motion
sensors. It is recommended that all shop lighting fixtures have
individual motion sensors integral to the fixture so as workers
move around a space the respective light fixture(s) will turn on.
Multiple “night lights” could also be wired to be on continuously
if desired.
e. Exterior Lighting Upgrades: The exterior high pressure
sodium lights operate during periods of darkness, which is
about half of a year. It is estimated that the use of LED exterior
lights can reduce the power consumption by 60%. In addition
to the four 100 watt fixtures, there are four 1000 watt fixtures
over the hangar door. At this point in LED lighting
development, it is uneconomical to replace these high-output
fixtures, but the smaller fixtures can easily be replaced and
energy savings realized.
f. Water Heating: Hot water is currently generated using an
inefficient and outdated natural gas-fired 140 MBH water
heater. It is recommended that the gas fired 140 MBH water
heater be changed to an indirect hot water heater that derives
heat from the boiler hydronic system with generates heat more
efficiently.
g. Door Track Heaters: Snow is kept clear of the hangar doors
using six 4,660 watt heating elements. This system was
originally controlled by a snow sensor. It is unknown whether
this control system is still operable, but the heaters are now
controlled manually. This results in the heating elements being
left on frequently and wasting large amounts of energy. It is
recommended that a 0-2 hour spring-wound timer with no
Barrow Search and Rescue Building Comprehensive Energy Audit
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“hold” feature be installed so operators would have to turn the
timer on if they want the door heater to go on. This time could
very easily be put into the control “auto” feature or even in
series with the “hand” option, potentially saving 28 kW of
power whenever it is on.
h. Refrigerator: Newer Energy Star refrigerators use about 411
watts, compared to 1990 versions that used 1,044 watts.
While this would have a 7.4 year payback, it is still
recommended due to the relatively low cost and payback
period.
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 15 priority recommendations in the detailed report estimate to save
$ 12,957/year, with an installed cost of $ 20,207. 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
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.
Barrow Search and Rescue Building 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 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.
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
Barrow Search and Rescue Building Comprehensive Energy Audit
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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.
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
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.
Barrow Search and Rescue Building Comprehensive Energy Audit
10
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 Barrow Search and Rescue Hangar. It was constructed in 1984
and has had no major remodels done since then. The building is
mostly a one story high bay structure except for the two-story office
structure on the east end. The principle function of the building is as
Barrow Search and Rescue Building Comprehensive Energy Audit
11
a hangar for the Search and Rescue Department’s aircraft and
equipment.
a. Heating System: The building heating system consists of
three Burnham series 8H cast iron gas fired boilers. The
boilers provide heat to the make-up air system, offices, shop,
and hangar areas. The boilers were installed after 2001. Hot
glycol is circulated using two Grundfos Model 40-240F
circulating pumps, each with 1.5 hp motors. The pumps are not
equipped with VFD drives, but they are placed on automatic
and controlled by a Delta building control system. There are 5
hydronic unit heaters in the hangar area, but they are all
deactivated. A high-bay radiant heat system also provides heat
to the hangar bay, and destratification fans help keep heat in
the lower elevations.
b. Ventilation System: There are 5 exhaust fans, 2 Heating &
Ventilation units, and 1 air handler in this building. All together,
the exhaust fans can pull over 33,000 cfm of conditioned air
out of the building. Two of the fans are equipped with heat
exchangers that use the outgoing air to preheat the incoming
air for the H&V units. The fans, H&V units, and AHU are all
controlled using the Delta HVAC controller so they are only
active when the building is occupied. This is a well-run system
that has had recent upgrades, and is not in need of renovation.
c. Plumbing System: Toilets with lavs, showers, and clothes
washing facilities are provided for the workers, in addition to a
break sink.
d. Domestic Hot Water: Hot water is generated using a 140
MBH natural gas fired water heater with a capacity of 90
gallons.
e. Lighting: Lighting throughout the building is comprised of a
mixture of T12 and T8 fixtures with mostly magnetic ballasts in
the offices and low spaces. The hangar area is lit using 400
watt HPS lighting fixtures, and exterior lights are typically 100
watt HPS wall packs.
Barrow Search and Rescue 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 277,020
kWh/year at an average cost of $30,311. The average natural gas
consumption was 41,427 ccf/year, at an average annual cost of
$12,623/year. After modeling this building in AkWarm, it was
determined that the gas usage readings are consistently and
considerably low – potentially below 20% of actual. This is likely due
to a damaged or infrequently calibrated gas meter. We believe the
low amount of metered gas does not accurately represent the actual
consumption of gas.
6. Energy Efficiency Measures considered or recommended: The
building was examined for application of a multitude of potential
EEMs that were discussed in this report. 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.
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.
Barrow Search and Rescue 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
Parking area on the tarmac side of the building
Hangar, looking northwest
Appendix A: Photos
Hangar, looking northeast
Fire pump and tank on the north side of the hangar
Appendix A: Photos
Mechanical room
From left to right, Boiler #1, #2, and #3
Appendix A: Photos
Gas-fired, 90-gallon water heater
Shop air compressor
Appendix A: Photos
Glycol pump control switches
Appendix A: Photos
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
NSB Search and Rescue Building
Page 1
ENERGY AUDIT REPORT – PROJECT SUMMARY – Created 2/21/2012 5:42 PM
General Project Information
PROJECT INFORMATION AUDITOR INFORMATION
Building: NSB Search and Rescue Building Auditor Company: Richard S. Armstrong, PE, LLC
Address: 1797 Ahkovak St. Auditor Name: Richard S. Armstrong, David Robbins
City: Barrow Auditor Address: 2321 Merrill Field Drive C-6
Anchorage, Ak 99501 Client Name: Price Brower
Client Address: 1797 Ahkovak
Barrow, AK 99723
Auditor Phone: (907) 229-0331
Auditor FAX:
Client Phone: (907) 852-2822 Auditor Comment:
Client FAX:
Design Data
Building Area: 13,824 square feet Design Heating Load: Design Loss at Space: 3,174,641
Btu/hour
with Distribution Losses: 3,174,641 Btu/hour
Plant Input Rating assuming 82.0% Plant Efficiency and
25% Safety Margin: 4,839,392 Btu/hour
Note: Additional Capacity should be added for DHW load,
if served.
Typical Occupancy: 9 people Design Indoor Temperature: 67.9 deg F (building average)
Actual City: Barrow Design Outdoor Temperature: -41 deg F
Weather/Fuel City: Barrow Heating Degree Days: 20,370 deg F-days
Utility Information
Electric Utility: Barrow Utilities & Electric-elec -
Commercial - Lg
Natural Gas Provider: Barrow Utilities & Electric-gas -
Commercial - Lg
Average Annual Cost/kWh: $0.111/kWh Average Annual Cost/ccf: $0.305/ccf
Annual Energy Cost Estimate
Description Space
Heating
Space
Cooling
Water
Heating Lighting Refrige
ration
Other
Electric
al
Cooking Clothes
Drying
Ventilatio
n Fans
Service
Fees Total Cost
Existing
Building
$38,108 $0 $97 $15,540 $0 $10,45
7
$0 $0 $1,728 $1,222 $67,152
With
Proposed
Retrofits
$40,499 $0 $36 $7,587 $0 $3,811 $0 $0 $1,728 $1,222 $54,884
SAVINGS -$2,391 $0 $61 $7,953 $0 $6,646 $0 $0 $0 $0 $12,268
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
NSB Search and Rescue Building
Page 2
$0
$20,000
$40,000
$60,000
$80,000
Existing Retrofit
Service Fees
Ventilation and Fans
Space Heating
Other Electrical
Lighting
Domestic Hot Water
Annual Energy Costs by End Use
$0
$20,000
$40,000
$60,000
$80,000
Existing Retrofit
Natural Gas
Electricity
Annual Energy Costs by Fuel
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
NSB Search and Rescue Building
Page 3
PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
1 Lighting: 3-tube T8 Replace with 8 FLUOR T8
4' F32T8 32W Standard
Instant StdElectronic
$208 $1 1285.56 0
2 Other Electrical:
door track snow
melter
Improve Manual Switching $5,853 $90 401.36 0
3 Lighting: 4-tube T8
mag
Remove Manual Switching
and Add new Occupancy
Sensor, Multi-Level Switch
$1,152 $240 29.62 0.2
4 Lighting: Type D T12
shop
Remove Manual Switching
and Add new Occupancy
Sensor
$261 $90 17.90 0.3
5 Lighting: 4-tube T8
elec
Remove Manual Switching
and Add new Occupancy
Sensor, Multi-Level Switch
$337 $260 8.00 0.8
6 Lighting: 4 tube T12
1st floor
Remove Manual Switching
and Add new Occupancy
Sensor
$85 $90 5.86 1.1
7 Lighting: conference
room incandescent
Replace with 8 FLUOR CFL,
Spiral 15 W
$47 $50 5.83 1.1
8 Lighting: Type F
Hanger bay
Replace with 32 FLUOR (8)
T5 45.2" F54W/T5 HO
Standard HighLight
StdElectronic and Remove
Manual Switching and Add
new Occupancy Sensor
$3,600 $8,600 2.58 2.4
9 Lighting: Type D T12
shop
Replace with 26 FLUOR T8
4' F32T8 32W Standard
Instant StdElectronic
$437 $1,475 1.83 3.4
10 Lighting: 4-tube T8
mag
Replace with 33 FLUOR (2)
T8 4' F32T8 32W Standard
Instant StdElectronic
$421 $1,584 1.64 3.8
11 Lighting: 4-tube T8
elec
Replace with 8 FLUOR (4)
T8 4' F32T8 32W Standard
Instant StdElectronic
$150 $640 1.44 4.3
12 Lighting: 4 tube T12
1st floor
Replace with 6 FLUOR (2)
T8 4' F32T8 32W Standard
Instant StdElectronic
$198 $930 1.32 4.7
13 Lighting: single tube
T8 mag
Replace with 17 FLUOR T8
4' F32T8 32W Standard
Instant StdElectronic
$89 $970 0.57 10.9
14 Lighting: double tube
T8 mag
Replace with FLUOR T8 4'
F32T8 32W Standard
Instant StdElectronic
$3 $57 0.31 19.9
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
NSB Search and Rescue Building
Page 4
PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
15 Lighting: Type G
above door
Replace with 4 LED 50W
Module StdElectronic
$74 $5,130 0.28 69.3
16 HVAC And DHW Replaced gas-fired water
heater with sidearm hot
water tank
-$646 $1,900 -4.81 -2.9
TOTAL $12,268 $22,107 3.24 1.8
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
16 Replaced gas-fired water heater with sidearm hot water tank $1,900 -$646
Setback Thermostat
Rank Location Size/Type/Condition Recommendation Installed
Cost
Annual
Energy
Savings
Ventilation
Rank Recommendation Cost Annual
Energy
Savings
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
NSB Search and Rescue Building
Page 5
3. Appliances and Lighting
Lighting Fixtures and Controls
Rank Location Existing Recommended Installed
Cost
Annual
Energy
Savings
1 3-tube T8 8 FLUOR (3) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Replace with 8 FLUOR T8 4'
F32T8 32W Standard
Instant StdElectronic
$1 $208
3 4-tube T8 mag 33 FLUOR (4) T8 4' F32T8 32W
Standard Instant EfficMagnetic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor, Multi-Level Switch
$240 $1,152
4 Type D T12 shop 26 FLUOR (2) T12 4' F40T12
34W Energy-Saver Magnetic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$90 $261
5 4-tube T8 elec 8 FLUOR (4) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor, Multi-Level Switch
$260 $337
6 4 tube T12 1st floor 6 FLUOR (4) T12 4' F40T12 34W
Energy-Saver Magnetic with
Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$90 $85
7 conference room
incandescent
8 INCAN Reflector, Std 65W
BR30 with Manual Switching
Replace with 8 FLUOR CFL,
Spiral 15 W
$50 $47
8 Type F Hanger bay 32 HPS 400 Watt Magnetic with
Manual Switching
Replace with 32 FLUOR (8)
T5 45.2" F54W/T5 HO
Standard HighLight
StdElectronic and Remove
Manual Switching and Add
new Occupancy Sensor
$8,600 $3,600
9 Type D T12 shop 26 FLUOR (2) T12 4' F40T12
34W Energy-Saver Magnetic
with Manual Switching
Replace with 26 FLUOR T8
4' F32T8 32W Standard
Instant StdElectronic
$1,475 $437
10 4-tube T8 mag 33 FLUOR (4) T8 4' F32T8 32W
Standard Instant EfficMagnetic
with Manual Switching
Replace with 33 FLUOR (2)
T8 4' F32T8 32W Standard
Instant StdElectronic
$1,584 $421
11 4-tube T8 elec 8 FLUOR (4) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Replace with 8 FLUOR (4)
T8 4' F32T8 32W Standard
Instant StdElectronic
$640 $150
12 4 tube T12 1st floor 6 FLUOR (4) T12 4' F40T12 34W
Energy-Saver Magnetic with
Manual Switching
Replace with 6 FLUOR (2)
T8 4' F32T8 32W Standard
Instant StdElectronic
$930 $198
13 single tube T8 mag 17 FLUOR T8 4' F32T8 32W
Standard Instant EfficMagnetic
with Manual Switching
Replace with 17 FLUOR T8
4' F32T8 32W Standard
Instant StdElectronic
$970 $89
14 double tube T8
mag
FLUOR T8 4' F32T8 32W
Standard Instant EfficMagnetic
with Manual Switching
Replace with FLUOR T8 4'
F32T8 32W Standard
Instant StdElectronic
$57 $3
15 Type G above door 4 HPS 100 Watt Magnetic with
On/Off Photoswitch
Replace with 4 LED 50W
Module StdElectronic
$5,130 $74
Appendix B
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
NSB Search and Rescue Building
Page 6
Refrigeration
Rank Location Existing Recommended Installed
Cost
Annual
Energy
Savings
Other Electrical Equipment
Rank Location Existing Recommended Installed
Cost
Annual
Energy
Savings
2 door track snow
melter
6 Heating Element with Manual
Switching
Improve Manual Switching $90 $5,853
Cooking/Clothes Drying
Rank Recommended Installed
Cost
Annual
Energy
Savings
------------------------------------------
AkWarmCalc Ver 2.1.4.0, Energy Lib 2/2/2012
Appendix C: Equipment Schedules - Mechanical
Appendix D: Building Plan
Appendix E: Lighting Plan
Appendix E: Lighting Plan
Appendix F: Mechanical Schematics
Appendix F: Mechanical Schematics
Appendix F: Mechanical Schematics
Appendix F: Mechanical Schematics
Appendix F: Mechanical Schematics