HomeMy WebLinkAboutCIRI-ANC-CAEC MOA Spenard Rec Center 2012-EE
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June 17, 2012
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ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 2 of 53
Project # CIRI-ANC-CAEC-44
Prepared for:
The Municipality of Anchorage
Spenard Recreation Center
2020 W 48th St
Anchorage, AK 99517
Audit performed by:
Energy Audits of Alaska
P.O. Box 220215
Anchorage, AK 98522
Contact: Jim Fowler, PE, CEA#1705
Jim@jim-fowler.com
206.954.3614
Prime Contractor:
Central Alaska Engineering Company
32215 Lakefront Drive
Soldotna, AK 99699
Contact: Jerry Herring, PE, CEA #1484
AKEngineers@starband.net
907.260.5311
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 3 of 53
TABLE OF CONTENTS
1. Executive Summary 5
2. Audit and Analysis Background 14
3. Acknowledgements 16
4. Building Description & Function 17
5. Historic Energy Consumption 19
6. Interactive Effects of Projects 19
7. Loan Program 20
APPENDICES
Appendix A: Photos 21
Appendix B: AkWarm-C Report 28
Appendix C: Equipment Schedules 33
Appendix D: Additional, Building-Specific EEM detail 37
Appendix E: Specifications supporting EEM’s 39
Appendix F: Benchmark Data 47
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 4 of 53
REPORT DISCLAIMERS
This audit was performed using American Recovery and Reinvestment Act (ARRA)
funds, managed by the Alaska Housing Finance Corporation (AHFC).
This energy audit is intended to identify and recommend potential areas of energy
savings, estimate the value of the savings and approximate the costs to implement the
recommendations. Any modifications or changes made to a building to realize the
savings must be designed and implemented by licensed, experienced professionals in
their fields. Lighting recommendations should all be first analyzed through a thorough
lighting analysis to assure that the recommended lighting upgrades will comply with
State of Alaska Statute as well as Illuminating Engineering Society (IES)
recommendations. Energy Audits of Alaska, LLC and Central Alaska Engineering
Company bear no responsibility for work performed as a result of this report.
Payback periods may vary from those forecasted 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, Central Alaska Engineering Company, AHFC, or any other party involved in
preparation of this report accepts 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.
IGA’s 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.
AkWarm-C is a building energy modeling software developed under contract by AHFC.
This material is based upon work supported by the Department of Energy under Award
Number DE-EE0000095. This report was prepared as an account of work sponsored
by an agency of the United States Government. Neither the United States Government
nor any agency thereof, nor any of their employees, makes any warranty, express or
implied, or assumes any legal liability or responsibility for the accuracy, completeness,
or usefulness of any information, apparatus, product, or process disclosed, or
represents that its use would not infringe privately owned rights. Reference herein to
any specific commercial product, process, or service by trade name, trademark,
manufacturer, or otherwise does not necessarily constitute or imply its endorsement,
recommendation, or favoring by the United States Government or any agency
thereof. The views and opinions of authors expressed herein do not necessarily state
or reflect those of the United States Government or any agency thereof.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 5 of 53
1. Executive Summary
Building Owner:
Municipality of Anchorage
3640 East Tudor
Anchorage, AK 99507
Building contact:
Roger Besh
Assistant Recreation
Center Manager
907-343-4142
beschra@muni.org
Alaska Housing Finance Corporation
P.O. Box 10120
Anchorage, AK 99510-1020
Contact: Rebekah Luhrs
Energy Specialist
907-330-8141
rluhrs@ahfc.us
Guidance to the reader:
The Executive Summary is designed to contain all the information the building
owner/operator should need to determine how the subject building’s energy
efficiency compares with other similar use buildings, which energy
improvements should be implemented, approximately how much they will cost
and their estimated annual savings. Sections 2 through 7 of this report and the
Appendices, are back-up and provide much more detailed information should
the owner/operator, or their staff, desire to investigate further.
This audit was performed using American Recovery and Reinvestment act
(ARRA) funds to promote the use of innovation and technology to solve energy
and environmental problems in a way that improves the State’s economy. The
audit and this report are pre-requisites to access AHFC’s Retrofit Energy
Assessment Loans (REAL) program, which is available to the building’s owner.
The purpose of the energy audit is to identify cost-effective system and facility
modifications, adjustments, alterations, additions and retrofits. Systems
investigated during the audit included heating, ventilation, and air conditioning
(HVAC), interior and exterior lighting, motors, building envelope, and energy
management control systems (EMCS).
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 6 of 53
The site visit to this building occurred on April 26th, 2012.
The Spenard Community Recreation Center houses on its first floor, a
gymnasium, two racquet ball courts, a small commercial kitchen, several game
rooms and offices and a multi-purpose room. The second floor has an arts and
crafts room, the mechanical fan room and an exercise room.
The original building was constructed in 1983, it underwent an HVAC controls
renovation in 2008 or 2009 and a lighting upgrade in 2011. No major
modifications have been made to this building.
Energy Consumption and Benchmark Data
Benchmark utility data for 2009 and 2010 is summarized in Tables 1 and 2
below.
Table 1
2010 2011
Consumption Cost Consumption Cost
Electricity ‐ kWh 433,600 $ 56,585 421,840 $ 45,205
Natural Gas ‐ Therms 45,673 $ 46,589 46,748 $ 40,422
Totals $ 103,174 $ 85,627
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 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. Comparative values are shown in
Table 2 below.
Table 2 – 2009 & 2010 Average EUI and ECI
Spenard
Recreation
Center
Fairview
Recreation Center
Mt. View
Recreation Center
Continental
US
Average**
Energy Use Index
(EUI) ‐ kBTU/SF 193 203 90 89‐102
Energy Cost Index
(ECI) ‐ $/SF $2.99 $3.19 $1.49 ‐
** Data retrieved from the US Energy Administration database, these figures are for “Places of
Public Assembly”, the most relevant category tracked by the USEA.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 7 of 53
0 50 100 150 200
Spenard Recreational Center
Fairview Recreation Center
Mt. View Recreation Center
Natural Gas EUI
Electrical EUI
Evaluation of energy consumption & benchmark data
As observed in Table 1 above, consumption of natural gas (NG) and electricity
held fairly consistent through 2009 and 2010. Table 2 shows that the subject
building’s energy use per square foot falls between two very similar buildings,
the Mt. View and Fairview Recreation Centers.
As is typical for Alaskan buildings, a comparison to similar buildings in the
continental US shows Alaska buildings have a much higher EUI – which is to be
expected given the weather differences.
A deeper analysis of the energy consumption of these three buildings follows:
Chart 1
Chart 1 above shows the subject building’s gas and electrical EUI compared to
the two other similar use buildings.
Natural gas consumption:
All three of the buildings have a combination of offices, gymnasiums, game, craft
and multi-purpose rooms. The auditor also audited both of the other Recreation
Centers, and having done so, believes that both the Spenard Rec Center’s NG
consumption and the Fairview Rec Center’s NG consumption are higher than
they should be, rather than the Mt. View Center’s consumption being
excessively low. Reasons for the subject building’s high NG EUI are detailed in
this report.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 8 of 53
Electrical consumption:
Based on Chart 1, the subject building’s electrical consumption falls between the
other two buildings. It should be noted that the lighting upgrade on the subject
building was completed in 2011 and its related savings will not be reflected in
the 2009 and 2010 benchmark data used in AkWarm-C and for this report.
Recommended Energy Efficiency Measures
Various Energy Efficiency Measures (EEMs) have been analyzed for this
building to determine if they would provide energy savings with reasonably good
payback periods. EEMs are recommended for reasons including:
1.) they have a reasonably good payback period
2.) for code compliance
3.) end of life (EOL) replacement
4.) reasons pertaining to efficient building management
strategy, operations, maintenance and/or safety
All the EEMs considered for this facility are detailed in the attached AkWarm-C
Detail Report in Appendix B and in Appendix D. Each EEM includes payback
times, estimated installation costs and estimated energy savings.
The summary EEM’s that follow are the only EEM’s that are recommended
for this building. Others have been considered (See Appendix D-2) but are not
deemed to be justified or cost effective. The recommended EEM’s were
selected based on consideration from three perspectives: overall efficiency of
building management, reduction in energy consumption and return on
investment (ROI).
Efficient building management dictates, as an example: that all lights be
upgraded, that lamp inventory variations be minimized and that all appropriate
rooms have similar occupancy controls and setback thermostats - despite the
fact that a single or several rooms may have an unjustifiably long payback on
their individual lighting or controls upgrade.
Some of the summary EEM’s below contain individual EEM’s that are grouped
by type (i.e. all relevant lighting upgrades are summed and listed as a single
upgrade, all thermostat setback retrofits are grouped together and listed as a
single upgrade, etc.). They are prioritized as a group, with the highest ROI
(shortest payback) listed first. Table 4 at the end of this section summarizes
these EEM’s and Appendix B (the AkWarm-C detailed report) and Appendix D
provide additional detail pertaining to each individual recommendation.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 9 of 53
A.) SAUNA CONTROLS
The two sauna’s in this building are on when the building is
operating, which is 82 hours per week; they are estimated to be
consuming electricity for 66% of that time, which is 75,681 KWh, or
$12,865 annually in electricity. It is recommended to install a
temporary occupancy sensor (see Appendix E) to determine the
highest usage periods, then either add a 7-day timer to the sauna
controls, or lock them and have management turn the units on and
off at appropriate times of the day. For purposes of estimating
savings, it is assumed that usage can be reduced by an additional
33% with little disruption, thereby saving $4,953/year. See
Appendix B-1.
Sauna Control EEM:
Estimated cost $ 1,000
Annual Savings $ 4,953
Payback 3 months
B.) HVAC SYSTEM
The HVAC system controls were updated in this building within the
last 2-3 years, but they are in need of additional adjustment. The
building is over-pressurized, as demonstrated by the arctic entry
doors being pushed open when the ventilation system is on (see
photos in Appendix A) and the exterior entry doors are open. This
means that a significant amount of heated air is being exhausted
to the outside. It is recommended to re-commission the controls
as soon as possible. The estimated cost is less than $5000; the
annual savings are difficult to calculate, but the savings figure
below was estimated by re-running the AkWarm-C model a second
time using 10% less outside air (OSA). See Appendix B-2.
HVAC EEM:
Estimated cost $ 5,000
Annual savings $ 5,951
Payback 10 months
C.) REFRIGERATION & REFRIGERATED VENDING MACHINES
There are three refrigerated beverage vending machines and a ¾
size upright freezer in this building. It is recommended to replace
the ¾ size freezer at its EOL with an Energy Star version and to
add a VendingMiser (see www.vendingmiser.com) to each
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 10 of 53
refrigerated beverage vending machine. These EEM’s are found
in Appendix B-3, B-4 & B-5.
Combined refrigeration EEM’s:
Estimated cost (incremental difference
for the freezer & three VendingMisers) $ 1,275
Annual Savings $ 823
Payback 1.6 years
D.) DESKTOP COMPUTERS
Desktop PC’s consume between 200 and 300 watts when in use.
Laptops consume between 50 and 100 watts when in use. It is
recommended to replace the 6 desktop PC’s with laptops at their
EOL. The incremental difference in cost is estimated to be $200
each and although the payback is approaching the life expectancy
of a laptop, the recommendation is still made. See Appendix B-11.
Personal Computer EEM:
Estimated cost $ 1,200
Annual savings $ 336
Payback 3.6 years
E.) LIGHTING AND LIGHTING CONTROLS
The lighting fixtures and controls in this building were upgraded in
2011. There are several remaining opportunities for energy
savings.
Energy Saver lamps:
At the next building re-lamp, it is recommended to replace all 32
watt T8 lamps with 28 watt energy saver lamps. There is a 2.9%
reduction in light output but a 12% reduction in energy
consumption. Typically the 2.9% reduction is not noticeable and
the room light levels measured (see Table 3) all had higher than
the recommended light levels.
Occupancy Sensors: It is also recommended to add occupancy
sensors to the remaining rooms which do not already have them
installed.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 11 of 53
HID fixtures: There are two remaining exterior metal halide light
fixtures, it is recommended to replace them with LED fixtures.
Daylight sensing: There are several rooms that have sufficient
daylight to consider “daylight harvesting” they are listed below.
Also listed are the light levels recommended IES*, and the actual
light levels recorded during the audit, which occurred on a bright,
sunny day:
Table 3
Room
Light levels
recom‐
mended by
IES* (foot
candles)
Recorded light levels (foot
candles)
nearest
the
windows/
skylights half way
furthest
from
windows
/skylight
Entry Corridor (102) 20 85 40 10
Reception (120) 50 40 ‐ 26
Teen Center (127) step dim
switch 30 100 25 10
Senior Center (141) step dim
switch 30 30 ‐ 20
Arts & Crafts (207) step dim
switch 30 100 25 10
Dance (203) step dim switch 30 100 25 10
* IES is The Illuminating Engineering Society
Daylight sensors can be installed and utilized by the central light
control modules (LCM’s), or they can be added to individual light
fixtures, or to a row of fixtures. See Appendix B-14 & B-21 for
details and Appendix E for sample sensors.
This EEM summarizes Appendix B-6 through 10 and B-12 through
21. See Appendix E for more information on occupancy sensors,
daylight sensors and energy saver 28 watt lamps.
Combined Lighting and Lighting Control EEM’s:
Estimated cost $ 21,332
Annual Savings $ 2,923
Payback 7.3 years
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 12 of 53
F.) DOMESTIC HOT WATER CIRCULATION
The DHW re-circulation pump (DHWCP) was not operating during
this audit; its manual over-ride switch was in the “off” position (See
photos Appendix A). Building management runs the locker room
faucets each morning to eliminate the cold water “slug” in the
plumbing lines between the faucets and the hot water tanks
located in the boiler room (the same process is used in the
kitchen). It is not clear if the DHWCP is broken, or just turned off.
It is recommended to add a timer to this pump, so that it is
activated each morning and de-activated each evening, rather than
run the water each morning, as it is easy to forget to turn the
faucets off again (as was the case during the audit). It is not
possible to calculate savings from this EEM, estimated cost is
$500 installed (not included in Table 4 below). See Appendix E for
sample specification for 7-day timer.
A summary of the estimated cost totals and estimated annual savings
totals of the summary EEM’s listed above, is found in Table 4 below, and
again at the end of Appendix B.
Table 4
Combined total of recommended EEM’s
summarized above:
Estimated total cost $ 29,807
Annual Savings (including
maintenance savings) $ 14,986
Simple payback 2 years
Does not include design or construction management costs
In addition to EEM’s, various Energy Conservation Measures (ECM’s) are
recommended. ECM’s are policies or procedures to be followed by
management and employees that require no capital outlay. ECMs
recommended for this facility include:
1. Turn lights off when leaving a room that is not controlled by an
occupancy sensor.
2. All man-doors, roll-up doors and windows should be properly
maintained and adjusted to close and function properly.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 13 of 53
3. Turn off computers, printers, faxes, etc. when leaving the office
and utilize a desk plug load management device similar to the one
in Appendix E to turn off ancillary desk equipment when the
occupant leaves the desk.
4. Re-configure building occupants and activities to group un-
occupied offices (i.e. no guest, tenant or staff using the space) or
little used spaces, into the same HVAC zone so that zone’s
energy consumption can be set back to minimal levels.
5. A building is a living mini-ecosystem and its use changes. Re-
evaluate building usage annually and confirm that building set
points, zones, lighting levels, etc. are optimized for the current
usage and occupancy.
6. Lamp replacement should be a scheduled, preventative
maintenance activity. Re-lamp the entire building or entire usage
zones (a zone of the building that has similar lighting usage, so
lamps have roughly the same lifetime) as part of a scheduled
preventative maintenance routine. This assures all lamps are the
same color temperature (e.g. 2700K, 3000K, etc.) which
enhances occupant comfort and working efficiency. It also
minimizes expense because it is more cost effective to order large
quantities of the same lamp, and more labor efficient to dedicate
maintenance staff to a single re-lamp activity in a building zone,
rather than replace individual lamps as they fail.
7. Replace HVAC filters regularly. Maintain optimal operation of all
dampers, actuators, valves and other HVAC components.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 14 of 53
2. Audit and Analysis Background
Program Description: This audit included services to identify, develop, and
evaluate energy efficiency measures for the subject building. The scope of this
project included evaluating the building shell, lighting, hot water generation and
HVAC equipment. The auditor may or may not identify system deficiencies if
they exist. The auditor’s role is to identify areas of potential savings, many of
which may require more detailed investigation and analysis by other qualified
professionals.
a. 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 (walls, doors, windows, etc)
ii. Heating, ventilating, and air conditioning
iii. Lighting systems and controls
iv. Building specific equipment
v. Plumbing Systems
b. Benchmark Utility Data Validation: Benchmark utility data provided
through AHFC’s initial phase of their REAL program is validated, confirming
that meter numbers on the subject building match the meters from which the
energy consumption and cost data were collected. If the data is inaccurate
or missing, new benchmark data is obtained. In the event that there are
inconsistencies or gaps in the data, the existing data is evaluated and
missing data points are interpolated.
c. Method of Analysis: The information gathered prior to the site visit and
during the site visit is entered into AkWarm-C, an energy modeling software
program developed specifically for AHFC to identify forecasted energy
consumption. The forecasts can then be compared to actual energy
consumption. AkWarm-C also has some pre-programmed EEM retrofit
options that can be analyzed with projected energy savings based on
occupancy schedules, utility rates, building construction type, building
function, existing conditions, and climatic data 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.
Energy cost savings are calculated based on the historical energy costs for
the building. Installation costs include the labor and equipment required to
implement an EEM retrofit, but design and construction management costs
are excluded. Cost estimates are +/- 30% for this level of audit, and are
derived from one or more of the following: Means Cost Data, industry
publications, experience of the auditor, local contractors and/or equipment
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 15 of 53
suppliers. Brown Electric and ESI Lighting (www.esilighting.com) were
consulted for some of the lighting and lighting controls retrofit and/or
replacement costs. Maintenance savings are calculated, where applicable,
and are added to the energy savings for each EEM.
The costs and savings are considered and a simple payback period and ROI
is calculated. The simple payback period is based on the number of years
that it takes for the savings to pay back the net installation cost (Net
Installation costs divided by Net Savings.) In cases where the EEM
recommends replacement at EOL, the incremental cost difference between
the standard equipment in place, and the higher efficiency equipment being
recommended is used as the cost basis for payback calculation. The SIR
found in the AkWarm-C report is the Savings to Investment Ratio, defined as
the annual savings multiplied by the lifetime of the improvement, divided by
the initial installed cost. SIR’s greater than 1.0 indicate a positive lifetime
ROI.
The life-time for each EEM is entered into AkWarm-C; it is estimated based
on the typical life of the equipment being replaced or altered.
d. Limitations of the Study: All results are dependent on the quality of input
data provided, and may only act as an approximation. Most input data such
as building and equipment usage, occupancy hours and numbers, building
and HVAC operating hours, etc. was provided to the auditor by on site
personnel.
In some instances, several methods may achieve the identified savings.
This report is not a 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 EEM recommendation, but these costs
can be approximated at 15% of the cost of the work.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 16 of 53
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. The Municipality of Anchorage (Owner): MOA provided a review and brief
history of the benchmarked buildings, building selection criteria, building
plans, equipment specifications, building entry and coordination with on-site
personnel.
c. Central Alaska Engineering Company (Benchmark TSP): CAEC oversaw
the compilation of electrical and natural gas consumption data through their
subcontractor, Energy Audits of Alaska, LLC. CAEC also entered that data
into the statewide building database, called the Alaska Retrofit Information
System (ARIS). CAEC was awarded the auditing contract for this MOA
building.
d. Energy Audits of Alaska (energy auditor): This firm has been selected to
provide audits under this contract. The firm has two mechanical engineers,
certified as energy auditors and/or professional engineers and has also
received additional training from CAEC and other TSP’s to acquire further
specific information regarding audit requirements and potential EEM
applications.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 17 of 53
4. Building Description and Function:
The site visit and survey of subject building occurred on April 26th, 2012. The
outside ambient air temperature was 39F.
This is a two story building totaling 31,536 square feet, as calculated from plans.
The first floor consists of a 7284 square foot gymnasium and 16,348 square feet
of offices, multi-purpose rooms, a commercial kitchen, racquetball courts,
showers and locker rooms. The 7904 square foot second floor consists of arts &
crafts rooms, a dance studio, exercise room and the mechanical room. The
building has a relatively high occupancy; 8481 people used the center during
March of 2012.
The building is constructed on a 4” concrete slab, poured on grade, with 8”
concrete masonry unit (CMU), filled-core (with insulation) walls, furred out on the
outside or inside with 2”x6” metal studs and R-21 batt. Where the CMU’s are
exposed on the exterior, they are furred out on the inside and where the CMU’s
are exposed on the inside of the building, they are furred out on the exterior then
finished with stucco. Interior furred out walls are finished with gypsum. The
second floor and roof are supported by steel trusses, metal decking, and 6” of
rigid insulation on the roof, covered by a membrane. The interior ceiling is
finished with gypsum.
All exterior doors and windows in this building are double pane glass with steel
frames with a thermal break. Overall, the building is in above average condition.
Building details are as follows:
a. Heating, Cooling, Ventilation and Controls: Heat is
provided by a single, gas fired (with a dual fuel burner), cast
iron sectional, Weil McLain boiler which supply’s heat via
hydronic circulation pumps to the heating coils in the (3) air
handlers, as well as the CUH’s and baseboard radiant finned
tube heaters.
There is no cooling in the building and no apparent heat
recovery.
Ventilation is provided by three air handlers (called F-1, F-2
and F-5 in this building), one of which has been retrofitted
with a VFD to provide variable air volume (VAV) to rooms.
HVAC controls are Siemens Apogee, retro-fitted within the
last 2-3 years. Actuators are primarily electronic, but there
are several pneumatic units remaining on the generator
dampers, and a controls air compressor is still utilized.
Thermostats are a mixture of original equipment low voltage
adjustable, digital programmable and sensor-only.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 18 of 53
b. Appliances: There is a residential type, ¾ sized freezer, a
commercial reach-in refrigerator, a 4-burner commercial gas
range/oven combination with standing pilot lights on the
burners (which are manually turned off when not in use), a
gas fired grill and a 4-burner electric range/oven combination.
There is a commercial dishwasher and several other food
preparation appliances. There are two electric saunas in use
in the locker rooms. This building has 6 PC’s in use at various
times of day.
c. Plumbing Fixtures: This building contains a total of (13)
toilets, (5) urinals, (11) lavatory sinks, all with manual valves.
There are an additional (6) lavatory sinks with timer valves.
(10) toilets consume 1.6 gallons per flush (gpf), (3) consume
3.5 gpf, the urinals consume 1.0 gpf. There are (16) showers
with timer valves. Because the DHW circulation pump is not
in use, building management runs the faucets each morning
to deliver hot water to the sinks. See Appendix D-1 for EEM
recommendations.
d. Domestic Hot Water: Hot water for sinks, showers and the
kitchen is provided by two indirect, 80 gallon hot water
generators. There is an additional hot water booster located
in the kitchen, serving the dishwasher.
e. Interior Lighting & Controls: As previously mentioned, the
lighting in this building was upgraded in 2011. Room lighting
generally consists of T8-32W fixtures with electronic ballasts,
while the gym lighting is T5, as is the entry corridor with the
addition of LED recessed cans. The building utilizes digital
lighting control modules for lighting control. The savings
anticipated from this lighting upgrade will not be evident in the
2009/2010 benchmark utility data used in the AkWarm-C
model, or found in Appendix F.
Appendix B details the recommendation of completion of the
lighting upgrade. See Appendix E for additional information
on occupancy and daylight sensors. All exit signs in the
building are either LED or unlit, self-luminous.
f. Exterior Lighting: There are two remaining metal halide
exterior light fixtures in use to illuminate the building signage
on its east side. All of the parking lot pole lights have been
retrofitted with LED’s as have the wall packs and soffit lights.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 19 of 53
g. Building Shell: The building shell is described earlier; it
appears to be in above average condition inside and outside.
h. Motors: There are 3 large (5 HP or larger) motors in use in
this building. They are listed in Appendix C and were
considered for replacement with premium efficiency motors.
Two (F-1 & F-2) are already premium efficiency and the third
(elevator) has insufficient operating hours to justify
replacement; see Appendix D-2.
5. Historic Energy Consumption: Energy consumption is modeled within the
AkWarm-C program. The program typically analyzes twelve months of data.
Two years’ worth of natural gas and electricity consumption were averaged then
input into AKWarm-C. This monthly data is found in Appendix F.
Energy consumption was analyzed using two factors: the Energy Cost Index
(ECI) and the Energy Use Index (EUI). The energy cost index takes the annual
costs of natural gas and electrical energy over the surveyed period of time (two
years) divided by the square footage of the building. The ECI for this building is
$2.99/SF, the ECI for two very similar buildings, the Fairview Rec Center and
the Mt. View Rec Center, are $3.19 and $1.49 respectively.
The energy use index (EUI) is the total annual average electrical and heating
energy consumption expressed in thousands of BTU/SF. The average of the
2009 and 2010 EUI for this building is 193 kBTU/SF; the average 2009/2010
EUI for the Fairview Rec Center is 203 kBTU/SF and 90 kBTU/SF for the Mt.
View Recreation Center. The average for “Places of Public Assembly” buildings
across the US is 89-102 kBTU/SF as logged by the US Energy Information
Administration. This source data can be viewed at:
www.eia.gov/emeu/efficiency/cbecstrends/cbecs_tables_list.htm.
6. Interactive Effects of Projects: The AkWarm-C program calculates savings
assuming that all recommended EEM are implemented in the order shown in
Appendix B. Appendix D EEM’s are not included in the AkWarm-C model
unless referred to in the Appendix B EEM as “see also Appendix D-X”; in these
cases, the EEM is included in the AkWarm-C calculations. If some EEMs are
not implemented, savings for the remaining EEMs will be affected, in some
cases positively, and in others, negatively.
In general, all projects were evaluated sequentially so that energy savings
associated with one EEM would not be attributed to another EEM as well. By
modeling the recommended projects sequentially, the analysis accounts for
interactive effects between the EEMs and does not “double count” savings.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 20 of 53
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 resulting from reductions in building
electrical consumption are included in the lighting analysis that is performed by
AkWarm-C.
7. 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.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 21 of 53
Appendix A - Photos
The two remaining metal halide exterior fixtures
Main entry doors blow open from over-pressurization of building
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 22 of 53
Recently replaced weather stripping damaged again by vendor delivery people
(according to on-site personnel)
Entry corridor well lit by skylights – “daylight harvesting” recommended
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 23 of 53
Kitchen
Low usage gas stove with standing pilot lights which management turns off
when not in use
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 24 of 53
Teen center, well lit with ambient light, also recommended for daylight
harvesting
Digital lighting Control Module
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 25 of 53
Gymnasium
Gymnasium thermostat 18’ up on South wall
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 26 of 53
Exercise facility
Second floor mechanical room with air handlers; note VFD on far unit
ENERGY
Ju
N
AUDITS OF
ne 17, 2012
NORTH
ALASKA
Aeria
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Page 27 o
Center
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of 53
Appendix B – AkWarm-C Detailed Report
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Spenard Recreation Center
Page 28
ENERGY AUDIT REPORT – PROJECT SUMMARY – Created 6/18/2012 12:04 PM
General Project Information
PROJECT INFORMATION AUDITOR INFORMATION
Building: Spenard Recreation Center Auditor Company: Energy Audits of Alaska
Address: 2020 W 48th St Auditor Name: James Fowler
City: Anchorage Auditor Address: P.O. Box 220215
Anchorage, AK 99522 Client Name: Roger Besh
Client Address: 2020 W 48th St
Anchorage, AK 99517
Auditor Phone: (206) 954‐3614
Auditor FAX:
Client Phone: (907) 343‐4142 Auditor Comment:
Client FAX:
Design Data
Building Area: 31,536 square feet Design Heating Load: Design Loss at Space: 2,026,607
Btu/hour
with Distribution Losses: 2,251,786 Btu/hour
Plant Input Rating assuming 82.0% Plant Efficiency and
25% Safety Margin: 3,432,600 Btu/hour
Note: Additional Capacity should be added for DHW load,
if served.
Typical Occupancy: 35 people Design Indoor Temperature: 70 deg F (building average)
Actual City: Anchorage Design Outdoor Temperature: ‐18 deg F
Weather/Fuel City: Anchorage Heating Degree Days: 10,816 deg F‐days
Utility Information
Electric Utility: Chugach Electric ‐ Commercial ‐ Lg Natural Gas Provider: Enstar Natural Gas ‐ Commercial ‐
Lg
Average Annual Cost/kWh: $0.162/kWh Average Annual Cost/ccf: $0.815/ccf
Annual Energy Cost Estimate
Description Space
Heating
Space
Cooling
Water
Heating Lighting Refrigerat
ion
Other
Electrical Cooking Ventilation
Fans
Service
Fees Total Cost
Existing
Building
$36,934 $0 $5,437 $15,515 $2,268 $37,931 $49 $7,233 $1,973 $107,339
With
Proposed
Retrofits
$32,787 $0 $5,483 $11,977 $1,358 $31,549 $49 $7,237 $1,973 $92,413
SAVINGS $4,147 $0 ‐$46 $3,538 $909 $6,382 $0 ‐$4 $0 $14,926
Appendix B – AkWarm-C Detailed Report
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Spenard Recreation Center
Page 29
$0
$20,000
$40,000
$60,000
$80,000
$100,000
$120,000
Existing Retrofit
Service Fees
Ventilation and Fans
Space Heating
Refrigeration
Other Electrical
Lighting
Domestic Hot Water
Cooking
Annual Energy Costs by End Use
Appendix B – AkWarm-C Detailed Report
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Spenard Recreation Center
Page 30
PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
1 Other Electrical ‐
Controls Retrofit:
Saunas
Use temporary occupancy sensor
to determine highest use times,
then add 7‐day timer or locked
controls box to reduce usage by
33%
$4,953 $1,000 30.52 0.2
2 Ventilation Re‐commission the controls in
this building to eliminate the
over‐pressurization. Estimated
savings is a 10% reduction in
OSA.
$5,951 $5,000 15.37 0.8
3 Refrigeration ‐
Power Retrofit:
Kitchen ‐ Freezer
Replace with Energy Star version
at EOL @ incremental cost of
$75
$51 $75 5.65 1.5
4 Refrigeration ‐
Controls Retrofit:
Refrigerated
Beverage Vending
Machines
Add VendingMiser (see
www.vendingmister.com)
$589 $900 4.03 1.5
5 Refrigeration ‐
Controls Retrofit:
Reach‐in
Refrigerator
Add VendingMiser (see
www.vendingmister.com)
$183 $300 3.76 1.6
6 Lighting ‐ Power
Retrofit: Common
Area: T8‐2lamp, OS
added to circuit
under previous EEM
At next building re‐lamp, replace
(4) 32 watt lamps with 4 FLUOR
(2) T8 4' F32T8 28W Energy‐
Saver Instant StdElectronic
$13 $24 3.34 1.8
7 Lighting ‐ Power
Retrofit: Common
Area: T8‐4lamp,
already OS
At next building re‐lamp, replace
(10) 32 watt lamps with 10
FLUOR (4) T8 4' F32T8 28W
Energy‐Saver (2) Instant
StdElectronic
$59 $120 3.03 2
8 Lighting ‐ Power
Retrofit: Common
Area: T8‐2lamp,
parabolic, already OS
At next building re‐lamp, replace
(21) 32 watt lamps with 21
FLUOR (2) T8 4' F32T8 28W
Energy‐Saver Instant
StdElectronic
$62 $126 3.03 2
9 Lighting ‐ Power
Retrofit: Common
Area: T8‐2lamp,
already OS
At next building re‐lamp, replace
(11) 32 watt lamps with 11
FLUOR (2) T8 4' F32T8 28W
Energy‐Saver Instant
StdElectronic
$32 $66 3.04 2
Appendix B – AkWarm-C Detailed Report
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Spenard Recreation Center
Page 31
PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
10 Lighting ‐ Controls
Retrofit: Common
Area: T5‐6lamp, add
OS
Remove Manual Switching and
Add new Occupancy Sensor
$956 $2,200 2.68 2.3
11 Other Electrical ‐
Power Retrofit:
Desktop Computers
Replace with 6 Laptop at EOL @
incremental cost of $200
$336 $1,200 1.72 3.6
12 Lighting ‐ Power
Retrofit: Common
Area: T8‐2lamp, U‐
type, already OS
At next building re‐lamp, replace
(2) 32 watt lamps with 2 FLUOR
(2) T8 F32T8 30W U‐Tube
Energy‐Saver Instant
StdElectronic
$3 $12 1.53 4
13 Lighting ‐ Combined
Retrofit: Elevator:
T12‐2lamp, add
single fixture
mounted OS
Replace with FLUOR (2) T8 4'
F32T8 28W Energy‐Saver Instant
StdElectronic and Remove
Manual Switching and Add new
Occupancy Sensor
$71
+ $10 Maint.
Savings
$420 1.47 5.9
14 Lighting ‐ Controls
Retrofit: Daylighting:
Entry Corridor
Lighting: T5‐4lamp,
OS added to circuit
under previous EEM
Add daylight sensing capability
to Lighting Control Module
$337 $1,500 1.39 4.4
15 Lighting ‐ Power
Retrofit:
Mechanical/Storage:
T8‐2lamp, already
OS
At next building re‐lamp, replace
(57) 32 watt lamps with 57
FLUOR (2) T8 4' F32T8 28W
Energy‐Saver Instant
StdElectronic
$69 $342 1.24 5
16 Lighting ‐ Power
Retrofit: Exterior:
MH‐400, sign light
Replace with 2 LED 115W
Module StdElectronic
$312
+ $50 Maint.
Savings
$3,600 1.15 11.5
17 Lighting ‐ Combined
Retrofit:
Mechanical/Storage:
T8‐2lamp, add OS
At next building re‐lamp, replace
(9) 32 watt lamps with 9 FLUOR
(2) T8 4' F32T8 28W Energy‐
Saver Instant StdElectronic and
Remove Manual Switching and
Add new Occupancy Sensor
$96 $654 0.91 6.8
18 Lighting ‐ Combined
Retrofit: Common
Area: T8‐2lamp, add
OS
**At next building re‐lamp,
replace (52) 32 watt lamps with
52 FLUOR (2) T8 4' F32T8 28W
Energy‐Saver Instant
StdElectronic and Remove
Manual Switching and Add new
Occupancy Sensor
$408 $2,912 0.86 7.1
Appendix B – AkWarm-C Detailed Report
Energy Audit – Energy Analysis and Cost Comparison
AkWarm Commercial Audit Software
Spenard Recreation Center
Page 32
PRIORITY LIST – RECOMMENDED ENERGY EFFICIENCY MEASURES
Rank Feature Recommendation Annual Energy
Savings
Installed
Cost
SIR Payback
(Years)
19 Lighting ‐ Combined
Retrofit: Common
Area: T8‐2lamp, U‐
type, add OS
At next building re‐lamp, replace
(7) 32 watt lamps with 7 FLUOR
(2) T8 F32T8 30W U‐Tube
Energy‐Saver Instant
StdElectronic and Remove
Manual Switching and Add new
Occupancy Sensor
$62 $442 0.86 7.2
20 Lighting ‐ Controls
Retrofit: Common
Area: LED, add OS
Remove Manual Switching and
Add new Occupancy Sensor
$87 $1,600 0.33 18.4
21 Lighting ‐ Combined
Retrofit: Daylighting:
T8‐2lamp, already
OS, add daylight
harvesting
***Replace existing ballasts with
daylight sensing dimming ballast
and replace (69) 32 watt lamps
with 69 FLUOR T8 4' F32T8 28W
Energy‐Saver lamps
$297 $7,314 0.25 24.6
THE FOLLOWING EEM’S WERE CALCULATED OUTSIDE OF AkWARM-C. Savings will affect and
be affected by the EEM’s listed above, depending on their order of implementation.
See
Appe
ndix
D‐1
Plumbing Fixtures: (10)
1.6 gpf W.C., (3) 3.5 gpf
W.C., (11) manual valve
lavatories, (6)
lavatories with timers,
(5) urinals, (16)
showers with timers
Replace 3.5 gpf W.C.’s with 1.6 gpf
versions; retrofit all WC’s with 2‐
stage valves; retrofit urinal valves
with proximity sensing on/off
controls, replace urinals with
ultra‐low flow and proximity
sensing controls; retrofit manual
lav faucets with proximity sensing
or timer valves
TOTAL $14,926
+ $60
Maint.
Savings
$29,807 4.52 2
Sample translations of the nomenclature used above:
** (item 18) During the next building re-lamp or during a renovation (i.e. when the lamps are to be replaced anyway, so the
cost is the incremental difference between a 32 watt and 28 watt lamp, estimated to be $3 ea), replace the (52) T8-32 watt
lamps with T8-28 watt “energy saver” lamps; the fixture has a standard, instant start, electronic ballast; also replace the
existing manual switches with the appropriate number and type of occupancy sensors. Occupancy sensors cost from
$200 -$300 ea installed.
*** (item 21) Retrofit existing ballasts with dimming ballasts which have integrated daylight sensors. Replace the (69) T8-
32 watt lamps with T8-28 watt energy saver lamps.
‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐
AkWarmCalc Ver 2.2.0.3, Energy Lib 5/18/2012
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 33 of 53
Appendix C – Equipment Schedules
ALL SCHEDULES COMPILED FROM PLANS OR ON‐SITE NAMEPLATE OBSERVATION,
WHERE ACCESSIBLE e= estimated
AIR HANDLER SCHEDULE (FANS WITH HEATING COILS)
SYMBOL MFGR/MODEL FAN CFM
MOTOR DATA
HP/VOLTS/PH REMARKS
F‐1 Trane CCDB14ANOC; 284 MBH 7,680 5/460/3; 89.5'% Gym;
F‐2 Trane CCDB‐41RNOC; 340
MBH 22000 20/460/3; 93% VAV fan with ABB VFD (HOA
switch on "hand")
F‐5 Trane TVDB06AEOC5NLL02;
285 MBH 2546 1.5/460/3;
85.5%
F‐8 (MAU)
Pace SCF‐85B; 284 MBH
2144 1/230/3
Makeup air for kitchen hood,
with heating coil; interlocked
with kitchen hood F‐3; not
currently in service, can't get
connected back to disconnect
EXHAUST FAN SCHEDULE
SYMBOL MOTOR MFGR/MODEL CFM
MOTOR DATA
HP/VOLTS/PH REMARKS
EF‐3 Greenheck SQB‐14‐A 2400 2/460/3 Kitchen exhaust
hood
EF‐4 Penn Domex 8T‐45 1420 .25/110/1
HOA switch on
"hand'
EF‐6 Penn Domex 8T‐45 1630 .25/110/1 Over kiln
EF‐7 Penn Domex 8T‐45 1630 .25/110/1 Over kiln
EF‐9 Pace Utility U‐6F 385 .5/110/1
Janitor room; HOA
switch on "hand'
EF‐10 Penn Zepherette 85 100W/110/1 toilet room; on
light switch
EF‐11 Penn Domex 8T‐45 1420 .25/110/1
HOA switch on
"hand'
PUMP SCHEDULE
SYMBOL MFGR/MODEL GPM
MOTOR DATA
HP/VOLTS/PH REMARKS
CP‐1 Grundfos UPA 80‐160 140 2/460/3
F‐5 coil supply and
building hydronics
CP‐2 Grundfos UP 80‐160 140 2/460/3 alternate
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 34 of 53
CP‐3 Grundfos UPA 80‐160 160 2/460/3
F‐1 & F‐2 coil
supply (new in
2002)
CP‐4 Grundfos UP 80‐160 160 2/460/3 alternate
CP‐5 Grundfos 15‐42F 5 85W/115/1
DHW re‐circulation
pump (manual
switch "off")
CP‐X Grundfos 40‐80/2 e45 450W/115/1 HWG supply pump
CP‐7 Jet pump motor 1 .33/115/1
Cold water
circulation ‐ runs
continuously
CP‐8 Paco 704 50 .4/115/1
elevator pit sump
pump
BOILER SCHEDULE
SYMBOL MFGR/MODEL MOTOR DATA HP/VOLTS/PH REMARKS
B‐1 Weil McLain BG‐1294‐SW
1.5/460/3 burner motor;
6A/115/1 controls; backup oil
pump .5/460/3
3850 MBH input, 3190 MBH
output, 83% efficient, gas fired,
dual fuel, cast iron sectional
boiler
UNIT HEATER SCHEDULE
SYMBOL MFGR/MODEL CFM
MOTOR DATA
HP/VOLTS/PH REMARKS
CUH‐1 (5
units) Trane N‐03; 20 MBH 300 e.17/115/1
C140; Kitchen;
V130 (manually
turned off); 2 in
multipurpose
room
CUH‐2 Beacon Morris W‐82; 8.67 MBH 72 e80w/115/1
HOT WATER HEATER SCHEDULE
SYMBOL MFGR/MODEL GALLONS
AUXILLIARY
POWER ELEMENT SIZE
HWG‐1 Amtrol WHS80ZCDW 80 11A/115/1
Indirect water
generator
HWG‐2 Amtrol WHS80ZCDW 80 11A/115/1
Indirect water
generator
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 35 of 53
PLUMBING FIXTURES
SYMBOL FIXTURE GPF QUANTITY REMARKS
W.C. 1.6 10
manually
operated; 1 not in
use
W.C. 3.5 3 manually operated
Urinal 1.0 5 manually operated
Lavatory ‐ 11
manually
operated; 3
running!
Lavatory w/timer ‐ 6 timer operated
Shower w/timer 2.6 16 timer operated
EQUIPMENT SCHEDULES
SYMBOL FIXTURE QUANTITY
MOTOR DATA
HP/VOLTS/PH REMARKS
Sauna ‐ Helo SKLE 140 1 14.4Kw/208/3 w/timer
Sauna ‐ Harvia Oy K FLC 120 1 12Kw/208/3
on from 9:00am ‐
10:00pm
Compressor 1 .5/115/1 sprinkler system
Generator 1
w/pneumatic
dampers
Elevator, subersible hydraulic motor 1 25/460/3
used 1x/hour, 10
sec up cycle, no
power on down
cycle
Kiln 1 9.98Kw/208/1
Quincy controls compressor
1 2/230/1: 75.5%
1 min on, 5 min off 1 2/230/1: 77%
Leland Faraday Controls sprinkler
compressor 1 .5/115/1; 62%
KITCHEN SCHEDULE
SYMBOL FIXTURE QUANTITY
MOTOR DATA
HP/VOLTS/PH REMARKS
US Range, Stove/grill/oven combi 1
gas with standing
pilots manually
turned off
Garbage Disposal ‐ Hobart FD2‐125 1 1.25/230/3
Dishwasher w/booster ‐ Stero SDRA 1 1/208/3 60 sec cycle
Stove/oven ‐ Hobart UR201 1 12Kw/208/1‐3 electric
Ice Machine 1
Commercial coffee machine 1
Electric water heater booster ‐ Hatco 3CS‐M9 1 9Kw/480/3
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 36 of 53
PLUG LOAD SUMMARY
SYMBOL FIXTURE QUANTITY
MOTOR DATA
HP/VOLTS/PH REMARKS
Coffee Machine 1 450w
Personal Printer 4 85w
Small TV 2
Microwave 3
Vending Machine 4
Cash Register 1
DVR Video Recorder 1
Fan 7
Hand Dryer ‐ Parker 4‐C 4 20A/120/?
Shredder 1
Smart Board 1
Web Cam 1 on skate park
Sound System 1
Score Board 1
Simplex day tank pumps 2 .33/115/1
Large Printer 1
LIGHTING SCHEDULE
FIXTURE TYPE DESCRIPTION LAMPS MOUNTING
NUMBER WATTS TYPE HEIGHT
T8‐2 Florescent, T8 lamps, electronic ballast 2 32 surface ceiling
T8‐2 Pb Florescent, T8 lamps, parabolic, electronic ballast 2 32 surface ceiling
T8‐2 U Florescent, T8 lamps, U‐type, electronic ballast 2 32 surface ceiling
T5‐4 Florescent, T5 lamps, electronic ballast 4 28 surface ceiling
T5‐6 Florescent, T5 lamps, electronic ballast 6 28 surface ceiling
T12‐2 Florescent T12, magnetic ballast 2 40 surface ceiling
Recess can LED, interior 1 14 surface ceiling
Recess can LED, exterior 1 75 surface ceiling
Wall pack LED, exterior 1 75 surface 8'
Pole Light LED, exterior 1 75 Pole 28'
Sign Light Metal Halide ‐ Exterior, magnetic ballast 1 400 ground ground
LARGE MOTOR SCHEDULE
Motor use &
location (5 HP or
larger) HP/Volts/Ph
Existing
Efficiency
Premium
Efficiency
Estimated
annual usage
(hrs)
Annual
Savings
Burn‐out
payback
(yrs/cost)
Replacement
payback
(yrs/cost)
Elevator motor 25/480/3 88.5% 93.60% 12 insufficient operating
F‐2 20/400/3 93.0% 93.00%
Already premium efficiency F‐1 5/400/3 89.5% 89.50%
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 37 of 53
Appendix D
Additional, Building-Specific EEM details
Appendix D-1: Plumbing fixtures: All urinals should be retrofitted or be replaced with ultra low
flow models. The lavatory faucets and urinals should be retrofitted with proximity sensing on/off
controls. All toilets in this building have manual valves, they should be retrofitted with dual flush
valves (see below). The (3) 3.5 gpf toilets should be replaced with 1.6 gpf models, with dual
flush valves. This audit does not include water usage and AkWarm-C does not allow for the
modeling of it, but a typical ultra low flow urinal (1 pint to ½ gallon per flush) can save up to 66%
of water used, and typically pays back within 3 years, depending on usage. Dual flush toilet
valves will typically pay back within 1-3 years, depending on usage. These payback periods
are reduced by 66% or more if the fixture or valve is replaced at its EOL rather than while it’s
still functioning. For an EOL replacement, the cost used is the incremental difference in cost
between an ultra-low-flow fixture and a straight across replacement with the same fixture.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 38 of 53
Appendix D-2: Additional EEM’S considered but not recommended
De-Stratification Fans: There was a less than 1 F temperature difference between air at the 6’
level and the gymnasium ceiling; furthermore, the thermostats are approximately 18’ high on the
wall, which further reduces the possible temperature difference from air stratification. There
would be little or no advantage resulting from the installation of de-stratification fans.
Motor replacements with premium efficiency versions: There are insufficient annual
operating hours on the 25 HP elevator hydraulic motor to justify replacement with premium
efficiency, now or at EOL. The other two large motors in the building are already premium
efficiency.
Night time and unoccupied setback temperatures:
The retrofitted digital thermostats appear to have
the ability to be programmed for night time and
unoccupied set back temperatures. It is
presumed that this is already occurring in this
building.
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 39 of 53
Appendix E – Specifications supporting EEM’s
VendingMiser
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 40 of 53
Appendix E – 7-day Programmable Timer (Suitable for DHWCP)
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 41 of 53
Appendix E – Desk plug load management device
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 42 of 53
Appendix E – Specifications supporting EEM’s
Lighting Controls
Occupancy sensors 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. Line of sight,
motion sensing occupancy sensors can be installed in existing duplex switch boxes, as well as
on ceilings. Dual technology sensors are typically ceiling mounted in rooms, lavatories,
corridors, vehicle bays and storage areas where obstacles may interfere with line-of-sight
sensors. The second technology in these sensors activates lighting based on sound or changes
in position, and work even when a person is fully obscured by an obstacle. Zoned occupancy
controls are typically recommended for long corridors, large vehicle bays and large storage
areas with multiple switches and lighting zones. Zoned controls are designed to activate and de-
activate lighting by zone, by row, or even by fixture, based on the location of the occupant.
Daylight sensors can dim a light based on the level of ambient light in a room. Daylight
sensors can be switch, ceiling, wall or fixture mounted and can control a row of fixtures, an entire
room, or a single fixture.
Occupancy and daylight sensors can reduce power consumption by 25-60%. Paybacks on
sensors range from 1 to 5 years, depending on the light fixture consumption and occupancy of
the room.
Lighting Management Systems (LMS) today have the capability to manage lighting based on a
wide variety of parameters including building usage, daylight conditions and occupancy. They
are retro-fittable, and can be stand alone or integrated into a building’s HVAC, alarm or other
control systems. Timers, occupancy and daylight sensing can be integrated. Additionally, they
can be easily re-configured as a building’s usage or occupancy pattern changes.
Sample products recommended in this report, in order of the cut-sheets that follow:
- Fixture mounted occupancy sensor suitable for high bay lighting, can
control individual fixtures or a row or bank of fixtures. Typical product
cost $60 ea.
- T8-28 watt energy saver lamp; this lamp, when replacing a standard T8-
32 watt lamp, reduces light output by 2.9% (which is not noticeable in
most environments) and saves 12% in energy consumption. They are
compatible with most existing instant start and programmed start
electronic T8 ballasts. Typical product cost $150/case of 40 lamps.
- Daylight sensing, dimming ballast, retrofit kit. With nearly the same
amount of labor required to change a ballast, this kit also includes a
daylight sensor which dims the lamps in each individual fixture, based on
pre-set minimum light levels and available ambient light. Sample
product cost for a T8, 2-lamp ballast and integrated light sensor is $100.
- Temporary occupancy sensing data logger. Typically used to determine
possible savings resulting from the addition of occupancy sensors, also
can be used for logging any room occupancy. Typical product cost $300
each.
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June 17, 2012 Page 43 of 53
Appendix E – Lighting Controls
Zone control occupancy sensor
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 44 of 53
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 45 of 53
Appendix E – Daylight sensing dimmer – fixture mounted
Distributed by ESI Lighting, www.esilighting.com
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 46 of 53
Appendix E – Lighting/occupancy logger can also be used to track sauna usage
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 47 of 53
Appendix F – Benchmark Data
$0
$1,000
$2,000
$3,000
$4,000
$5,000
$6,000
$7,000
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
Jan‐09Mar‐09May‐09Jul‐09Sep‐09Nov‐09Jan‐10Mar‐10May‐10Jul‐10Sep‐10Nov‐10Natural Gas Cost ($)Natural Gas Consumption (Therms)Date (Mon ‐Yr)
Spenard Recreation Center‐Natural Gas Consumption (Therms) vs. Natural Gas Cost ($)
Natural Gas Consumption (Therms)
Natural Gas Cost ($)
$0
$1,000
$2,000
$3,000
$4,000
$5,000
$6,000
$7,000
28000
30000
32000
34000
36000
38000
40000
Jan‐09Mar‐09May‐09Jul‐09Sep‐09Nov‐09Jan‐10Mar‐10May‐10Jul‐10Sep‐10Nov‐10Electric Cost ($)Electric Consumption (kWh)Date (Mon ‐Yr)
Spenard Recreation Center ‐Electric Consumption (kWh) vs. Electric Cost ($)
Electric Consumption (kWh)
Electric Cost ($)
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 48 of 53
REAL Preliminary Benchmark Data Form
PART I – FACILITY INFORMATION
Facility Owner Facility Owned By Date
MOA Municipal Government/Subdivision 04/23/12
Building Name/ Identifier Building Usage Building Square Footage
Spenard Recreation Center Other 31,536
Building Type Community Population Year Built
Mixed 261,500 1983
Facility Address Facility City
Facility Zip
2020 W 48th Ave Anchorage
99517
Contact Person
First Name Last Name Middle Name Email Phone
Cindy Liggett
Liggettck@ci.anchorage.ak.us 343‐4599
Mailing Address City State Zip
Anchorage
AK
Primary
Operating Hours
Monday‐Friday Saturday Sunday Holidays
10am‐9pm 10am‐9pm 12‐5pm
Average # of
Occupants
During
Operating Hours
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 49 of 53
Spenard Recreation Center
Buiding Size Input (sf) = 31,536
2009 Natural Gas Consumption (Therms) 45,673.00
2009 Natural Gas Cost ($) 46,589
2009 Electric Consumption (kWh) 433,600
2009 Electric Cost ($) 56,585
2009 Oil Consumption (Therms) 0.00
2009 Oil Cost ($) 0
2009 Propane Consumption (Therms) 0.00
2009 Propane Cost ($) 0.00
2009 Coal Consumption (Therms) 0.00
2009 Coal Cost ($) 0.00
2009 Wood Consumption (Therms) 0.00
2009 Wood Cost ($) 0.00
2009 Thermal Consumption (Therms) 0.00
2009 Thermal Cost ($) 0.00
2009 Steam Consumption (Therms) 0.00
2009 Steam Cost ($) 0.00
2009 Total Energy Use (kBtu) 6,047,177
2009 Total Energy Cost ($) 103,174
Annual Energy Use Intensity (EUI)
2009 Natural Gas (kBtu/sf) 144.8
2009 Electricity (kBtu/sf) 46.9
2009 Oil (kBtu/sf) 0.0
2009 Propane (kBtu/sf) 0.0
2009 Coal (kBtu/sf) 0.0
2009 Wood (kBtu/sf) 0.0
2009 Thermal (kBtu/sf) 0.0
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 50 of 53
2009 Steam (kBtu/sf) 0.0
2009 Energy Utilization Index (kBtu/sf) 191.8
Annual Energy Cost Index (ECI)
2009 Natural Gas Cost Index ($/sf) 1.48
2009 Electric Cost Index ($/sf) 1.79
2009 Oil Cost Index ($/sf) 0.00
2009 Propane Cost Index ($/sf) 0.00
2009 Coal Cost Index ($/sf) 0.00
2009 Wood Cost Index ($/sf) 0.00
2009 Thermal Cost Index ($/sf) 0.00
2009 Steam Cost Index ($/sf) 0.00
2009 Energy Cost Index ($/sf) 3.27
2010 Natural Gas Consumption (Therms) 46,748.00
2010 Natural Gas Cost ($) 40,422
2010 Electric Consumption (kWh) 421,840
2010 Electric Cost ($) 45,205
2010 Oil Consumption (Therms) 0.00
2010 Oil Cost ($) 0
2010 Propane Consumption (Therms) 0.00
2010 Propane Cost ($) 0
2010 Coal Consumption (Therms) 0.00
2010 Coal Cost ($) 0
2010 Wood Consumption (Therms) 0.00
2010 Wood Cost ($) 0
2010 Thermal Consumption (Therms) 0.00
2010 Thermal Cost ($) 0
2010 Steam Consumption (Therms) 0.00
2010 Steam Cost ($) 0
2010 Total Energy Use (kBtu) 6,114,540
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 51 of 53
2010 Total Energy Cost ($) 85,627
Annual Energy Use Intensity (EUI)
2010 Natural Gas (kBtu/sf) 148.2
2010 Electricity (kBtu/sf) 45.7
2010 Oil (kBtu/sf) 0.0
2010 Propane (kBtu/sf) 0.0
2010 Coal (kBtu/sf) 0.0
2010 Wood (kBtu/sf) 0.0
2010 Thermal (kBtu/sf) 0.0
2010 Steam (kBtu/sf) 0.0
2010 Energy Utilization Index (kBtu/sf) 193.9
Annual Energy Cost Index (ECI)
2010 Natural Gas Cost Index ($/sf) 1.28
2010 Electric Cost Index ($/sf) 1.43
2010 Oil Cost Index ($/sf) 0.00
2010 Propane Cost Index ($/sf) 0.00
2010 Coal Cost Index ($/sf) 0.00
2010 Wood Cost Index ($/sf) 0.00
2010 Thermal Cost Index ($/sf) 0.00
2010 Steam Cost Index ($/sf) 0.00
20010 Energy Cost Index ($/sf) 2.72
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 52 of 53
Natural Gas Btus/CCF = 100,000
Month Start Date End Date Billing Days
Consumption
(CCF)
Natural Gas
Cost ($)
Unit Cost
($/Therm)
Jan‐09 1/8/2009 2/6/2009 34 4287 $4,361 $1.02
Feb‐09 2/6/2009 3/5/2009 29 3767 $3,840 $1.02
Mar‐09 3/5/2009 4/7/2009 27 3215 $3,286 $1.02
Apr‐09 4/7/2009 5/6/2009 33 3731 $3,804 $1.02
May‐09 5/6/2009 6/8/2009 29 3616 $3,688 $1.02
Jun‐09 6/8/2009 7/8/2009 33 2497 $2,567 $1.03
Jul‐09 7/8/2009 8/6/2009 30 1909 $2,003 $1.05
Aug‐09 8/6/2009 9/8/2009 29 3158 $3,232 $1.02
Sep‐09 9/8/2009 10/7/2009 33 4470 $4,548 $1.02
Oct‐09 10/7/2009 11/5/2009 29 5655 $5,736 $1.01
Nov‐09 11/5/2009 12/4/2009 29 5041 $5,120 $1.02
Dec‐09 12/4/2009 1/7/2010 29 4327 $4,404 $1.02
Jan‐10 12/24/2009 1/25/2010 34 4210 $3,547 $0.84
Feb‐10 1/25/2010 2/25/2010 29 3954 $3,335 $0.84
Mar‐10 2/25/2010 3/26/2010 31 3430 $2,902 $0.85
Apr‐10 3/26/2010 4/26/2010 30 3901 $3,325 $0.85
May‐10 4/26/2010 5/26/2010 29 3059 $2,622 $0.86
Jun‐10 5/26/2010 6/25/2010 29 2183 $1,915 $0.88
Jul‐10 6/25/2010 7/27/2010 32 1703 $1,490 $0.87
Aug‐10 7/27/2010 8/26/2010 31 2537 $2,391 $0.94
Sep‐10 8/26/2010 9/27/2010 32 3022 $2,802 $0.93
Oct‐10 9/27/2010 10/26/2010 30 4960 $4,329 $0.87
Nov‐10 10/26/2010 11/24/2010 27 5973 $5,150 $0.86
Dec‐10 11/24/2010 12/27/2010 34 7816 $6,614 $0.85
Jan ‐ 09 to Dec ‐ 09 total: 45,673 $46,589
Jan ‐ 10 to Dec ‐ 10 total: 46,748 $40,422
Jan ‐ 09 to Dec ‐ 09 avg: $1.02
Jan ‐ 10 to Dec ‐ 10 avg: $0.87
ENERGY AUDITS OF ALASKA SPENARD RECREATION CENTER
June 17, 2012 Page 53 of 53
Electricity Btus/kWh = 3,413
Month Start Date End Date Billing Days Consumption (kWh)
Total Electric
Cost ($)
Unit Cost
($/kWh)
Jan‐09 12/26/2008 1/26/2009 31 39120 $5,745 $0.15
Feb‐09 1/26/2009 2/25/2009 30 38800 $5,680 $0.15
Mar‐09 2/25/2009 3/26/2009 29 35280 $5,239 $0.15
Apr‐09 3/26/2009 4/24/2009 29 38920 $5,319 $0.14
May‐09 4/24/2009 5/26/2009 32 34320 $4,746 $0.14
Jun‐09 5/26/2009 6/25/2009 30 35120 $4,815 $0.14
Jul‐09 6/25/2009 7/27/2009 32 34440 $4,188 $0.12
Aug‐09 7/27/2009 8/25/2009 29 33400 $3,895 $0.12
Sep‐09 8/25/2009 9/24/2009 30 33200 $3,913 $0.12
Oct‐09 9/24/2009 10/23/2009 29 36960 $4,212 $0.11
Nov‐09 10/23/2009 11/24/2009 32 37320 $4,520 $0.12
Dec‐09 11/24/2009 12/24/2009 30 36720 $4,313 $0.12
Jan‐10 12/24/2009 1/25/2010 32 36640 $3,885 $0.11
Feb‐10 1/25/2010 2/25/2010 31 36880 $3,875 $0.11
Mar‐10 2/25/2010 3/26/2010 29 33560 $3,601 $0.11
Apr‐10 3/26/2010 4/26/2010 31 35960 $3,905 $0.11
May‐10 4/26/2010 5/26/2010 30 34560 $3,775 $0.11
Jun‐10 5/26/2010 6/25/2010 30 34160 $3,777 $0.11
Jul‐10 6/25/2010 7/27/2010 32 32960 $3,527 $0.11
Aug‐10 7/27/2010 8/26/2010 30 35240 $3,695 $0.10
Sep‐10 8/26/2010 9/27/2010 32 32640 $3,579 $0.11
Oct‐10 9/27/2010 10/26/2010 29 35800 $3,803 $0.11
Nov‐10 10/26/2010 11/24/2010 29 37480 $3,995 $0.11
Dec‐10 11/24/2010 12/27/2010 33 35960 $3,789 $0.11
Jan ‐ 09 to Dec ‐ 09 total: 433600 $56,585
Jan ‐ 10 to Dec ‐ 10 total: 421840 $45,205
Jan ‐ 09 to Dec ‐ 09 avg: $0.13
Jan ‐ 10 to Dec ‐ 10 avg: $0.11