HomeMy WebLinkAboutASRC-AKP-RSA Nunamuit School 2012-EERichard S. Armstrong, PE, LLC
Mechanical/Electrical Engineer
Comprehensive Energy Audit
of
Nunamuit School
Anaktuvuk Pass, Alaska
Project # ASRC AKP RSA 01
Prepared for:
North Slope Borough School District
Contact: Pat Kennedy Jr, Director of Maintenance and Operations
Phone: 907 852 4410
Barrow, Alaska
February 25, 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
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TABLE OF CONTENTS
1. Report Disclaimers 3
2. Executive Summary 4
3. Audit and Analysis Background 8
4. Acknowledgements 10
5. Building Description & Function 10
6. Historic Energy Consumption 13
7. Energy Efficiency Measures Considered or Recommended 13
8. Interactive Effects of Projects 16
9. Loan Program 17
Appendix A: Photos 18
Appendix B: AkWarm C Report 30
Appendix C: Building Schedules and Plans 41
Performed by: ___________________________
Tyler T. Gray, BSME, CEA
CEA # 1627
RSA Engineering, Inc.
Reviewed by: ___________________________
Richard Armstrong, PE, CEM
CEA #178, CEM # 13557
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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.
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Investment Grade Energy Audit
Anaktuvuk Pass Nunamuuit School
2. Executive Summary:
The Anaktuvuk Pass Nunamuit School is a 36,112 square foot
facility that was constructed in 1978. Construction materials and
methods are similar to those common with North Slope Alaska
school construction in the late ‘70s and early ‘80s. The school was
renovated in 1997 and is scheduled for major renovations in year
2012$2013. A district heating system recovering heat from the
power house was installed in the building in 2007. It is owned and
operated by the North Slope Borough School District (NSBSD).
Benchmark energy use data collected for this building is presented in
Table 1 below:
Table 1
2009 2009 2010 2010
Utility Consumption Cost/Year Consumption Cost/Year
Electricity$kWh 394,080 $136,128 344,000 $117,700
No. 2 Fuel Oil $
Gallons
19,656 $ 93,973 19,524 $ 95,199
Heat Recovery $
MMbtu
* 415 $0 * 415 $0
Ttl Energy Costs $230,101 $212,899
* Heat recovery data is assumed to be 1/3 of total from BTU meter commissioned January 2009,
See Photos Appendix A
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:
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Table 2
Anaktuvuk Pass
Nunamuit School
Anaktuvuk Pass
Fire Station
Kaktovik School
Harold Kaveolook
Energy Use Index
(EUI) BTU/SF Avg
2009, 2010
128.07 163.5 183.3
Energy Cost Index
(ECI) Average
2009, 2010
$5.99 $5.97 $9.15
Various Energy Efficiency Measures (EEMs) have been analyzed for
this building to determine if they would be applicable for energy
savings with reasonably good payback periods. Those EEMs that
have a payback period or those that are recommended for code
compliance, life cycle replacement, or other reasons are also
included.
Specific EEMs recommended for this facility are detailed in the
attached AkWarm Energy Audit Report along with specific payback
times, as well as estimated installation costs and estimated energy
savings. The higher priority items are summarized below:
a. Air Handler Controls
i. Upgrade controllers and actuators from pneumatic to
electronic: The air handling units (AHUs) actuators
are pneumatically controlled by retrofit electro$
pneumatic controllers. Conversations with building
maintenance personnel indicated that many of these
devices are currently inoperative. It is recommended
that the pneumatically actuated heating coil and
dampers be replaced with electric actuators. In
addition it is recommended that the air handlers be re$
fit with new temperature and flow sensors and be
controlled with current model microcontroller based
digital control system with scheduling. The AHUs
should be operated using schedules in order to
ensure they are operating only when needed. If
necessary the schedules should be reprogrammed to
accommodate the actual hours of operation since they
are likely different than originally programmed.
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ii. Carbon Dioxide (CO2) Monitoring: CO2 sensors can
be utilized to help reduce the amount of outside air
drawn into the building. Rather than supply a set
minimum amount of outside air during AHU operation
(20% of total AHU air volume, for example) the
outside air can be varied to maintain the CO2 levels
below a determined setpoint, typically 800$1000 parts
per million for schools. This often results in less
outside air being drawn into the building, which
reduces the amount of energy needed to heat the air.
iii. The above changes to AHU control will provide an
estimated 10$15% annual energy savings with an
expected payback of approximately 1 year.
b. Replace Pneumatic Thermostats and Valves with Electric:
The building thermostats are pneumatically controlled and
have typically maintained a constant setpoint of 70 degrees
F. It is reported that many of these valves are
malfunctioning and creating “hot spots” throughout the
building. It is recommended that these thermostats and
valves be replaced with electric zone valves and either
stand$alone 7 day programmable thermostats or be
integrated into a building wide direct digital control system.
In general an area greater than 300 sq ft. which is served by
a single zone will meet the savings to investment ratio (SIR)
and will payback within 10 years. Having the majority of the
space integrated into a DDC system will have the additional
benefits of real$time monitoring of space temperatures,
improving maintenance efficiency in identifying
malfunctioning devices.
c. Replace ten boilers with two new 3$pass cast iron boilers:
There are ten cast iron boilers serving the facility. Two
boilers serve the domestic hot water system and the
remainder supply the ventilation and radiation heating
systems. Many of these boilers are original building
equipment (1978) and have reached the end of their useful
life. The redundant equipment requires an excessive
amount of maintenance and parts to operate. It is
recommended that these boilers be replaced with two new
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high$efficiency three pass cast iron boilers with packaged
boiler controller. The boilers will be piped in parallel with
the heat recovery heat exchanger to supply both the
building heat and domestic hot water systems. Taking into
consideration that these boilers have reached the end of
their useful lives, the increase in efficiency and maintenance
savings allow the marginal cost of this EEM to be expected
to pay off within 3 years.
d. Pumps: The main constant volume heating circulators for
the school can be changed out for variable speed pumps.
The pumps can run at lower speeds when the school has a
low heating demand, which will save power and reduce
cost. The main circulation pump can also be turned off
when there is no call for heating, rather than run
continuously as it currently does. The pump changes will
provide about 5$10% energy savings for the building with a
payback of about 6 years.
e. The school is a prime candidate for occupancy sensor
lighting. For a minimum of cost per circuit, the wall switches
can be replaced with occupancy sensors. The level of
occupancy of this building is less than average and the cost
savings realized by the minimal investment make this EEM
an excellent return on investment.
In addition to EEMs, various Energy Conservation Measures (ECMs)
are recommended that were not part of the energy audit model.
Some involve a modest capital investment. Others are policies or
procedures that are followed by management and employees that
require no capital outlay. Examples of recommended ECMs for this
facility include:
1. Water closet flushometer valve retrofit for dual level
flushing.
2. Turn off computers, monitors, printers, faxes, coffee
makers, etc when leaving the office for the day.
3. Disconnect refrigeration equipment over the summer,
including walk$in units and residential style refrigerators
Nuiqsut Nunamuit School Comprehensive Energy Audit
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throughout the building. This will save approximately
$1,800/year.
The priority recommendations in the detailed report estimate to save
$63,490/year, with an installed cost of $198,662, for a 3.1 year
payback. This does not include design or CA services, but overall it
does indicate a cost effective energy savings program.
3. Audit and Analysis Background:
a. Program Description: This audit included services to identify,
develop, and evaluate energy efficiency measures at the
subject building. The scope of this project included evaluating
the building shell, lighting, other electrical systems, and
heating, ventilating, and air conditioning (HVAC) equipment.
Measures were selected such that an overall simple payback
period of 8 years or less could be achieved.
b. Audit Description and Methodology: Preliminary audit
information was gathered in preparation for the site survey,
including benchmark utility consumption data, floor and lighting
plans, and equipment schedules where available. A site visit
was performed to inventory and evaluate the actual building
condition, including:
i. Building envelope (roof, windows, etc)
ii. Heating, ventilating, and air conditioning
iii. Lighting systems and controls
iv. Building specific equipment
v. Plumbing systems
c. Method of Analysis: The information gathered prior to the site
visit and at the site visit is entered into AkWarm$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
Nuiqsut Nunamuit School Comprehensive Energy Audit
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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$front investment required to
implement a change, but design and construction management
costs are excluded. Costs are derived from Means Cost Data,
industry publications, experience of the auditor, local
contractors and equipment suppliers. Maintenance savings
are calculated were applicable and are added to the energy
savings for each EEM.
The cost and savings are applied and a simple payback and
simple return on investment (ROI) is calculated. The simple
payback is based on the number of years that it takes for the
savings to pay back the net installation cost (Net Installation
divided by Net Savings.)
A simple life$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.
Nuiqsut Nunamuit School Comprehensive Energy Audit
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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 School District (Owner): The NSBSD
provided building access, original construction plans, two years
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
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 Nunamuit School, which was constructed in 1978.
The building serves as a kindergarten through twelfth grade (K$12)
educational facility, which includes classrooms, administrative offices,
a commercial kitchen, a multi$purpose lobby, a gymnasium, pool,
Nuiqsut Nunamuit School Comprehensive Energy Audit
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locker rooms, vocational education room with shop, restrooms, and
multiple storage and utility spaces. The building is a structure 36,112
square feet one story structure with an enclosed mechanical
mezzanine above the pool locker rooms and an insulated utildor
below the building for waste piping routing. The gymnasium has high
ceilings extending to the underside of the roof. Hallways, common
areas, classrooms, offices, locker rooms, the kitchen and various
storage and utility rooms have ceilings heights ranging from 8 to 9.5
feet. A utilidor is routed under the building where required to meet the
waste plumbing invert and house waste lift stations. The building roof
structure is wooden trusses in a cold attic space with batt insulation.
The exterior walls are 2x8 framed walls with batt insulation. The floor
structure is wood truss and glulam beams supported on piles with batt
insulation. The exteriors are covered with metal roofing and cedar
siding respectively. 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 many
schools that have been built in Northern Alaska in the late ‘70s and
early ‘80s. The building is in fair condition considering its age and is
likely due for renovations. The building is occupied from the middle of
August through the middle of May. The school is unused during the
summer months.
a. Heating System: The school heating plant is located in the
West wing adjacent to the woodshop area. Heat is delivered to
the school through the underfloor structure and utilidor. The
building heating system consists of seven (7) Weil$McLain
WGO$9 cast iron oil fired boilers with Beckett model AFG
burners and three (3) Slantfin L$60$C cast iron oil fired boilers
with Carlin model 102CRD burners. The boilers are original to
the 1978 school construction. Two of the Wiel$McLain boilers
supply the domestic hot water system only. The boiler system
is supplemented by a waste heat recovery heat exchanger,
Tranter model GSD$026$L and a 250 gpm heat recovery
injection pump. The waste heat recovery system is managed
by a standalone digital controller. At the time of this audit the
heat recovery system was operating and the current rate of
587 kBTU/h and the total heat recovery since installation in
January 2009 is 1247 million BTU. Refer to Table 1 for annual
utility usage data. Hot glycol is circulated around the building
Nuiqsut Nunamuit School Comprehensive Energy Audit
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using six (6) Grundfos model circulators, sized at 1 HP each.
The pumps are not equipped with VFD drives, so they run at
full speed at all times. Heat is distributed throughout the
building using baseboard fintube in most perimeter spaces,
unit heaters in the Gymnasuim, utility spaces, cabinet unit
heaters in vestibule entries, and some supplemental heat
through tempered ventilation air.
b. Ventilation System: There are seven (7) air handlers in the
building as well as multiple exhaust and ventilation fans. AHU$
1 serves original East classroom wing. AHU$2 serves the
Kitchen and provides makeup air for the exhaust hood. AHU$3
serves common areas, corridors, office and administrative
spaces. AHU$4 serves the pool area. AHU$5 serves the
Gymnasium. AHU$6 serves the vocational education and shop
areas. AHU$7 serves the East classroom addition. Exhaust
fans are installed for the kitchen cooking line exhaust hood,
commercial dishwasher hood, locker rooms, restrooms, and
school store. Exhaust fans serving as exhaust or ventilation
are found in the boiler room, vocational education shop,
welding shop, pool chemical room, and above the walk$in
freezer and refrigerator in the kitchen storage space. 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, however there are devices and strategies that 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, classroom sinks, mop sinks, and large sinks for
cooking. Most fixtures are located in bathroom groups,
including locker rooms, custodial closets and the commercial
kitchen.
d. Domestic Hot Water: Hot water is generated using a single
indirect water heater, Ace Buehler 665 gallon. No additional
hot water storage is provided. There is a hot water
Nuiqsut Nunamuit School Comprehensive Energy Audit
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recirculation pump that runs constantly to provide instant hot
water to remote fixtures.
e. Lighting: Typical lighting throughout the building occupied
spaces is T$8 fluorescent fixtures using electronic ballasts that
are controlled with dual circuited wall switches allowing for ½ of
the lights to be switched at a time. The gymnasium was
recently retrofitted to utilize 6 lamp T$8 fluorescent high$bay
fixtures and exterior lighting was recently retrofitted with LED
lighting with on photocells.
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.
The average electric consumption for the building is 369,040kWh/year
at an average cost of $127,444/year. The average fuel oil
consumption is 19,599 gallons/year, at an average annual cost of
$94,848/year. The average heat recovery usage is 415 million Btu at
no cost. Refer to Table 1.
7. Energy Efficiency Measures Recommended: The building was
examined for application of a multitude of potential EEMs that are
discussed below. Those EEMs that appear to have an application for
the subject building are further analyzed for estimated payback
periods, either within the AkWarm$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. Ventilation Control: The air handling units (AHUs) serving
the various school spaces as installed are using retrofit electro$
Nuiqsut Nunamuit School Comprehensive Energy Audit
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pneumatic controllers. This type of controller is utilized to
operate the fully pneumatic units using programmed schedules
based upon hours of occupancy of the spaces. Maintenance
reported that many of the pneumatic devices were not
operational and AHU$1 through 5 & AHU$7 were running
continuously, AHU$6 was manually shut off. An uncontrolled
air handler will use excessive heating and electrical energy if
the damper positions are not monitored and the units stay on
24/7. In the event that a unit is not operating during school
hours, the school will not have adequate ventilation air, which
will affect occupant 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.
i. Replace actuators and sensors: Each of the AHU
control devices should be replaced with the more reliable
electric controllers and sensors, allowing for precise
control and feedback to the DDC.
ii. Operation Schedules: Each of the AHUs serves a
space (or spaces) with unique occupancy schedules.
The AHUs should remain off with the outside air dampers
closed to the maximum extent possible. The DDC
should only turn on the heating and fans when a space is
in need of ventilation based or heat. In order to reduce
the amount of electric and heating energy used by the
AHUs the following scheduling changes are
recommended:
1. AHU 1,3,7 Classrooms, common areas, offices,
administration vocational education – Operate
the unit only during known school hours.
2. AHU 2, Kitchen and Make Up Air – Provide a
dedicated schedule for AHU$2 based on kitchen
staff hours and/or consider installing a manual
switch or timer. Interlock the operation of AHU$2 to
operate with the exhaust hood per code.
3. AHU 4 Operate the unit during known periods of
occupancy, and to control to maximum humidity
Nuiqsut Nunamuit School Comprehensive Energy Audit
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and minimum temperature set points. Consider
installing a manual override timer.
4. AHU 5, Gymnasium – Operate the unit during
known periods of occupancy such as school hours
and scheduled “open gym” hours. Consider
installing a manual override timer in the gymnasium
or front office, accessible only to staff, that will
operate the AHU for a set period of time such as 1
or 2 hours. This will allow the flexibility of operating
the AHU outside of typical schedules, for sporting
events or community gatherings, without the
possibility of forgetting to turn the unit off.
5. AHU 6, Home Economics/Vocational Education
– This unit appeared to be manually shut off.
Provide a dedicated schedule for AHU$6 and/or
consider installing a manual timer. Given that
these spaces have moderately industrial uses it is
important that the AHU is operable during
occupancy to provide adequate air changes.
iii. Carbon Dioxide (CO2) Monitoring: The amount of CO2
in a building has been shown to have a direct effect on
the performance of the occupants in the building. High
levels of CO2 >1000ppm cause occupants to feel sleepy
and lose concentration. It is also an indication that other
indoor contaminants, such as volatile organic
compounds (VOCs), odors and excessive humidity are
likely increasing in concentration. For these reasons
ventilation air is required by code to refresh indoor
building air. Typically, the ventilation rate is determined
based on the number of occupants and space sizes. In
many cases this over$ventilates the space. Another
method of ventilating spaces is varying the amount of
outside air based on CO2 levels in the building. Sensors
can be placed in spaces throughout the building
(preferred) or in the return air duct at the AHUs, and the
AHU outside air dampers can be modulated to increase
or decrease the outside air delivered to the building.
This modification applies specifically to Classrooms,
Gymnasium and Vocational education areas.
Nuiqsut Nunamuit School Comprehensive Energy Audit
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b. Replace Pneumatic Thermostats and Valves: It was
discovered during conversations with building administration
and maintenance personnel that hot and cold spots were
present in the building and many of the pneumatic zone valves
were not operating correctly. There were a number of rooms
that were observed with exterior windows open (even during
unoccupied hours), presumably to cool the spaces due to over$
heating. It is recommended that the pneumatic zone valves be
replaced with electric valves, and the thermostats replaced
with DDC controlled sensors, or programmable thermostats for
nighttime setback. The hydronic system be professionally
rebalanced.
c. Replace Boilers and Pumps: The school heating system
currently utilizes ten (10) individual cast iron fuel oil fired
boilers, many of which are original building equipment. At
best, a cast iron fuel oil boiler may reach efficiencies up to
86%, however often is the case that poor cleaning and
maintenance practices can reduce the efficiency to 78% or
lower. A significant amount of cost savings can be realized by
providing larger high efficiency 3$pass cast iron sectional
boilers, Additional cost savings are found in reduction of the
time and parts required to maintain fewer boilers. At the time
of the boiler replacement, the circulation pumps will need to be
replaced. It is recommended that variable speed pumps be
installed to further reduce the amount of electricity consumed.
d. Install occupancy sensors in all areas: With exception of the
Gymnasium and other common areas, the remainder of the
school is a prime candidate for occupancy sensor lighting. The
level of occupancy of this building is less than average and the
cost savings realized by the minimal investment make this
EEM an excellent return on investment.
8. Interactive Effects of Projects: The AkWarm$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
Nuiqsut Nunamuit School Comprehensive Energy Audit
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motors, then the savings for the project to install variable speed drives
(VFDs) on the fans will be increased.
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.
Nuiqsut Nunamuit School Comprehensive Energy Audit
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Appendix A: Photos
Main Entrance and Original East Wing, view from the North East
Northeast Classrooms, view from the East
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Gymnasium, view from the South
Fuel Tank and Exterior of Boiler Room, view from the South
Nuiqsut Nunamuit School Comprehensive Energy Audit
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Westwing and Vocational Education, view from the West
Gymnasium, view from the North
Nuiqsut Nunamuit School Comprehensive Energy Audit
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Typical T 8 Classroom Lighting Two Circuit Switched
Library T 8 Lighting Two Circuit Switched
Nuiqsut Nunamuit School Comprehensive Energy Audit
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Pool Lighting 250 W
Pool Covered
Nuiqsut Nunamuit School Comprehensive Energy Audit
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Mechanical Mezzanine 201 AHU 1 through AHU 5
Air Handler Electro Pneumatic Controllers
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AHU 7 Serving East Wing Classroom Expansion
Vocational Education Shop Exhaust Fan
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Boiler Room 10 Boilers
Boiler Room Building Hydronic Circulators
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Boiler Room Heat Recovery Heat Exchanger and Pump
Boiler Room Heat Recovery Controller
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Typical LED Exterior Lighting
Under building East Wing
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Commercial Kitchen Exhaust Hood
Kitchen Cooking Equipment
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Kitchen Exhaust Fan
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Appendix B: AK Warm Energy Model
ENERGY AUDIT REPORT – PROJECT SUMMARY – Created 2/25/2012 5:16 PM
General Project Information
PROJECT INFORMATION AUDITOR INFORMATION
Building: Nunamuit School Auditor Company: RSA Engineering
Address: 114 Illinois Road Auditor Name: Tyler Gray
City: Anaktuvuk Pass Auditor Address: 2522 Artic Blvd. Suite 200
Anchorage Alaska 99503,2516 Client Name: Pat Kennedy Jr.
Client Address: Barrow, Alaska Auditor Phone: (907) 276,0521
Auditor FAX:
Client Phone: (907) 852,4710 Auditor Comment:
Client FAX: (907) 852,9760
Design Data
Building Area: 36,112 square feet Design Heating Load: Design Loss at Space: 851,297 Btu/hour
with Distribution Losses: 851,297 Btu/hour
Plant Input Rating assuming 82.0% Plant Efficiency and 25%
Safety Margin: 1,297,708 Btu/hour
Note: Additional Capacity should be added for DHW load, if
served.
Typical Occupancy: 168 people Design Indoor Temperature: 70 deg F (building average)
Actual City: Anaktuvuk Pass Design Outdoor Temperature: ,61.8 deg F
Weather/Fuel City: Anaktuvuk Pass Heating Degree Days: 18,873 deg F,days
Utility Information
Electric Utility: North Slope Borough Utilities , Commercial ,
Sm
Natural Gas Provider: None
Average Annual Cost/kWh: $0.350/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
$100,22
0
$0 $19,398 $29,970 $7,700 $15,80
8
$13,610 $402 $25,982 $0 $213,091
With
Proposed
Retrofits
$76,445 $0 $8,974 $17,167 $7,700 $15,80
8
$13,610 $402 $9,495 $0 $149,601
SAVINGS $23,776 $0 $10,424 $12,803 $0 $0 $0 $0 $16,487 $0 $63,490
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Nuiqsut Nunamuit School 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:
136 , Gymnasium
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
136 , Gymnasium space.
$1,629 $2,000 11.99 1.2
2 Setback Thermostat:
151 , Pool
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
151 , Pool space.
$574 $1,000 8.46 1.7
3 HVAC And DHW Replace 10 boilers with 2
sized for 60% of heating load,
replace hydronic circulation
pumps with premium efficient
variable speed pumps
$31,553 $81,800 7.81 2.6
4 Setback Thermostat:
155 , Commons
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
155 , Commons space.
$428 $1,000 6.26 2.3
5 Setback Thermostat:
129 , Classroom
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
129 , Classroom space.
$413 $1,000 6.05 2.4
6 Setback Thermostat:
130 , Classroom
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
130 , Classroom space.
$401 $1,000 5.86 2.5
7 Setback Thermostat:
106 , Classroom
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
106 , Classroom space.
$334 $1,000 4.89 3
8 Setback Thermostat:
159 , Shop
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
159 , Shop space.
$300 $1,000 4.39 3.3
9 Setback Thermostat:
107 , Science
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
107 , Science space.
$293 $1,000 4.28 3.4
10 Setback Thermostat:
109 , Home Science
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
109 , Home Science space.
$287 $1,000 4.20 3.5
11 Setback Thermostat:
110 , Media Library
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
110 , Media Library space.
$278 $1,000 4.07 3.6
12 Setback Thermostat:
140 , Kitchen Storage
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
140 , Kitchen Storage space.
$266 $1,000 3.89 3.8
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PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
13 Setback Thermostat:
118 , Classroom
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
118 , Classroom space.
$265 $1,000 3.87 3.8
14 Setback Thermostat:
105 , Classroom
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
105 , Classroom space.
$255 $1,000 3.73 3.9
15 Setback Thermostat:
121 , Classroom
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
121 , Classroom space.
$243 $1,000 3.56 4.1
16 Setback Thermostat:
139 , Kitchen
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
139 , Kitchen space.
$240 $1,000 3.50 4.2
17 Ventilation Retrofit air handlers with
electric actuator valves and
damper motors, new
microcontrollers and
scheduling, C02 Sensors in
Gymnasium.
$14,118 $50,000 3.36 3.5
18 Lighting: Type P ,
Morris Kurtzon H25,
SK30,3
Remove Manual Switching
and Add new Occupancy
Sensor
$427 $800 3.30 1.9
19 Setback Thermostat:
128 , Classroom
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
128 , Classroom space.
$217 $1,000 3.18 4.6
20 Lighting: Type N ,
Lithonia DVP240AR
wet location
Remove Manual Switching
and Add new Occupancy
Sensor
$381 $800 2.94 2.1
21 Setback Thermostat:
102 , Commons
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
102 , Commons space.
$190 $1,000 2.79 5.3
22 Setback Thermostat:
125 , Special
Education
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
125 , Special Education
space.
$182 $1,000 2.67 5.5
23 Setback Thermostat:
122 , Pre,School
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
122 , Pre,School space.
$165 $1,000 2.41 6.1
24 Setback Thermostat:
108 , Classroom
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
108 , Classroom space.
$164 $1,000 2.40 6.1
25 Lighting: Type K ,
Marco B10,SA wet
location
Remove Manual Switching
and Add new Occupancy
Sensor
$87 $238 2.27 2.7
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PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
26 Lighting: Type F ,
Lithonia C240
Remove Manual Switching
and Add new Occupancy
Sensor
$488 $1,400 2.16 2.9
27 Lighting: Type New 2 ,
General storage
addition lighting
Remove Manual Switching
and Add new Occupancy
Sensor
$225 $675 2.07 3
28 Lighting: Type New 3 ,
General storage
addition corridor and
vestibule lighting
Remove Manual Switching
and Add new Occupancy
Sensor
$225 $675 2.06 3
29 Setback Thermostat:
131 , Work Room
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
131 , Work Room space.
$140 $1,000 2.05 7.1
30 Lighting: Type G ,
Lithonia AF240,WG3
Remove Manual Switching
and Add new Occupancy
Sensor
$624 $1,900 2.03 3
31 Lighting: Type H ,
Alkco #2145
Remove Manual Switching
and Add new Occupancy
Sensor
$26 $80 2.01 3.1
32 Lighting: Type D ,
Lithonia 2GP440A12
Remove Manual Switching
and Add new Occupancy
Sensor
$390 $1,200 2.01 3.1
33 Lighting: Type C ,
Lithonia 2GP240A12
Remove Manual Switching
and Add new Occupancy
Sensor
$435 $1,344 2.00 3.1
34 Lighting: Tyoe A ,
Helophane Percepta
WQ3401,4R
Remove Manual Switching
and Add new Occupancy
Sensor
$4,521 $14,000 1.99 3.1
35 Setback Thermostat:
133 , Corridor
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
133 , Corridor space.
$133 $1,000 1.95 7.5
36 Lighting: Type New ,
4,Classroom addition ,
fixtures with 3 T8's
Remove Manual Switching
and Add new Occupancy
Sensor
$1,397 $4,500 1.91 3.2
37 Lighting: Type B ,
Lithonia GP240A12
Remove Manual Switching
and Add new Occupancy
Sensor
$499 $1,900 1.61 3.8
38 Setback Thermostat:
161 , Small Engine
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
161 , Small Engine space.
$102 $1,000 1.50 9.8
39 Setback Thermostat:
137 , Weight room
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
137 , Weight room space.
$98 $1,000 1.44 10.2
40 Setback Thermostat:
114 , Principal
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
114 , Principal space.
$86 $1,000 1.26 11.6
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PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
41 Setback Thermostat:
160 , Welding
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
160 , Welding space.
$82 $1,000 1.20 12.2
42 Setback Thermostat:
134 , Corridor
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
134 , Corridor space.
$59 $1,000 0.86 17.1
43 Setback Thermostat:
153 , Corridor
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
153 , Corridor space.
$33 $1,000 0.49 29.9
44 Setback Thermostat:
117 , Vestibule
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
117 , Vestibule space.
$32 $1,000 0.47 30.8
45 Lighting: Type P ,
Morris Kurtzon H25,
SK30,3
Replace with 7 FLUOR (3)
T5 45.2" F54W/T5 HO
Energy,Saver
HighEfficElectronic
$181 $2,350 0.47 13
46 Setback Thermostat:
103 , Corridor
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
103 , Corridor space.
$16 $1,000 0.24 61.4
47 Setback Thermostat:
116 , Corridor
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
116 , Corridor space.
$8 $1,000 0.12 125.5
48 Setback Thermostat:
112 , Counselor
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
112 , Counselor space.
$0 $1,000 0.00 Infinity
49 Setback Thermostat:
113 , Secretary
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
113 , Secretary space.
$0 $1,000 0.00 Infinity
50 Setback Thermostat:
115 , Office
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
115 , Office space.
$0 $1,000 0.00 Infinity
TOTAL $63,490 $198,662 4.95 3.1
ENERGY AUDIT REPORT – ENERGY EFFICIENT RECOMMENDATIONS
1. Building Envelope
Insulation
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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
3 Replace 10 boilers with 2 sized for 60% of heating load, replace hydronic circulation pumps
with premium efficient variable speed pumps
$81,800 $31,553
Setback Thermostat
Rank Location Size/Type/Condition Recommendation Installed
Cost
Annual
Energy
Savings
1 136 , Gymnasium Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
136 , Gymnasium space.
$2,000 $1,629
2 151 , Pool Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
151 , Pool space.
$1,000 $574
4 155 , Commons Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
155 , Commons space.
$1,000 $428
5 129 , Classroom Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
129 , Classroom space.
$1,000 $413
6 130 , Classroom Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
130 , Classroom space.
$1,000 $401
7 106 , Classroom Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
106 , Classroom space.
$1,000 $334
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8 159 , Shop Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
159 , Shop space.
$1,000 $300
9 107 , Science Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
107 , Science space.
$1,000 $293
10 109 , Home Science Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
109 , Home Science space.
$1,000 $287
11 110 , Media Library Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
110 , Media Library space.
$1,000 $278
12 140 , Kitchen Storage Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
140 , Kitchen Storage space.
$1,000 $266
13 118 , Classroom Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
118 , Classroom space.
$1,000 $265
14 105 , Classroom Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
105 , Classroom space.
$1,000 $255
15 121 , Classroom Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
121 , Classroom space.
$1,000 $243
16 139 , Kitchen Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
139 , Kitchen space.
$1,000 $240
19 128 , Classroom Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
128 , Classroom space.
$1,000 $217
21 102 , Commons Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
102 , Commons space.
$1,000 $190
22 125 , Special
Education
Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
125 , Special Education space.
$1,000 $182
23 122 , Pre,School Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
122 , Pre,School space.
$1,000 $165
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24 108 , Classroom Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
108 , Classroom space.
$1,000 $164
29 131 , Work Room Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
131 , Work Room space.
$1,000 $140
35 133 , Corridor Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
133 , Corridor space.
$1,000 $133
38 161 , Small Engine Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
161 , Small Engine space.
$1,000 $102
39 137 , Weight room Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
137 , Weight room space.
$1,000 $98
40 114 , Principal Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
114 , Principal space.
$1,000 $86
41 160 , Welding Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
160 , Welding space.
$1,000 $82
42 134 , Corridor Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
134 , Corridor space.
$1,000 $59
43 153 , Corridor Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
153 , Corridor space.
$1,000 $33
44 117 , Vestibule Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
117 , Vestibule space.
$1,000 $32
46 103 , Corridor Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
103 , Corridor space.
$1,000 $16
47 116 , Corridor Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
116 , Corridor space.
$1,000 $8
48 112 , Counselor Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
112 , Counselor space.
$1,000 $0
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49 113 , Secretary Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
113 , Secretary space.
$1,000 $0
50 115 , Office Existing Unoccupied Heating
Setpoint: 70.0 deg F
Implement a Heating
Temperature Unoccupied
Setback to 60.0 deg F for the
115 , Office space.
$1,000 $0
Ventilation
Rank Recommendation Cost Annual
Energy
Savings
17 Retrofit air handlers with electric actuator valves and damper motors, new microcontrollers
and scheduling, C02 Sensors in Gymnasium.
$50,000 $14,118
3. Appliances and Lighting
Lighting Fixtures and Controls
Rank Location Existing Recommended Installed
Cost
Annual
Energy
Savings
18 Type P , Morris
Kurtzon H25,SK30,3
7 MH 250 Watt StdElectronic with
Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$800 $427
20 Type N , Lithonia
DVP240AR wet
location
18 FLUOR (2) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$800 $381
25 Type K , Marco B10,
SA wet location
4 INCAN A Lamp, Halogen 100W
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$238 $87
26 Type F , Lithonia
C240
39 FLUOR (2) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$1,400 $488
27 Type New 2 ,
General storage
addition lighting
18 FLUOR (2) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$675 $225
28 Type New 3 ,
General storage
addition corridor and
vestibule lighting
18 FLUOR (2) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$675 $225
30 Type G , Lithonia
AF240,WG3
50 FLUOR (2) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$1,900 $624
31 Type H , Alkco
#2145
4 FLUOR T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$80 $26
32 Type D , Lithonia
2GP440A12
16 FLUOR (4) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$1,200 $390
33 Type C , Lithonia
2GP240A12
35 FLUOR (2) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$1,344 $435
34 Tyoe A , Helophane
Percepta WQ3401,
4R
369 FLUOR (2) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$14,000 $4,521
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36 Type New , 4,
Classroom addition ,
fixtures with 3 T8's
79 FLUOR (3) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$4,500 $1,397
37 Type B , Lithonia
GP240A12
42 FLUOR (2) T8 4' F32T8 32W
Standard Instant StdElectronic
with Manual Switching
Remove Manual Switching
and Add new Occupancy
Sensor
$1,900 $499
45 Type P , Morris
Kurtzon H25,SK30,3
7 MH 250 Watt StdElectronic with
Manual Switching
Replace with 7 FLUOR (3) T5
45.2" F54W/T5 HO Energy,
Saver HighEfficElectronic
$2,350 $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
Nuiqsut Nunamuit School Comprehensive Energy Audit
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Appendix C: Existing Plans