HomeMy WebLinkAboutCIRI-PAQ-CAEC Palmer Ice Rink 2012-EEFINAL ENERGY AUDIT
Palmer Ice Arena
1317 Kerry Weiland Way
Palmer, AK 99645
ATTN: Beth Skow
Submitted by: Prime Contract:
April 16, 2012
Wisdom and
Associates, Inc.
Contact: Robert Moss, CEA
130 Trading Bay, #320
Kenai, AK 99611
Phone (907) 283-0629
Robert@akinspections.com
Contact: Jerry P. Herring, P.E., C.E.A.
32215 Lakefront Drive
Soldotna, Alaska 99669
Phone (907) 260-5311
akengineer@starband.net
Energy Audit Report
April 16, 2012
pg. 2
Table of Contents
Introduction 4
Executive Summary 6
Methods of Analysis 8
Audit/Building Overview 9
Energy Conservation Measures 10
Operations and Maintenance 20
Benchmark Information 22
Supporting Documentation 30
Equipment Inventory
Benchmark Data
Accent Refrigeration Proposal
Energy Distribution Assumptions
ECM Calculations
Compressor Logs
Cost Data
Energy Audit Report
April 16, 2012
pg. 3
REPORT DISCLAIMER
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 Statue and well as
Illuminating Engineering Society (IES) recommendations. Wisdom and Associates, Inc. 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
Conservation Measures (ECMs), or the operating schedules and maintenance provided by the
owner. Furthermore, ECMs are typically interactive, so implementation of one ECM may
impact the cost savings from another ECM. Wisdom and Associates, Inc. and Central Alaska
Engineering Company accept no liability for financial loss due to ECMs that fail to meet the
forecasted payback periods.
This audit meets the criteria of a Level 2 Investment Grade Audit (IGA) per the American
Society of Heating, Refrigeration, Air-conditioning Engineers (ASHRAE) and the Association of
Energy Engineers (AEE), and is valid for one year. The life of the IGA may be extended on a
case-by-case basis, at the discretion of AHFC.
IGA’s are the property of the State of Alaska, and may be incorporated into AkWarm-C, the
Alaska Retrofit Information System (ARIS), or other state and/or public information
systems. 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 lia bility 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 Audit Report
April 16, 2012
pg. 4
Introduction
This report is a comprehensive energy study, which included an analysis of major energy
consuming components of the building. The scope of the audit focused on the Palmer Ice Arena
as part of a contract for:
Alaska Housing Finance Corporation City of Palmer
Contact: Rebekah Luhrs Contact: Beth Skow
4300 Boniface Parkway 231 W Evergreen
Anchorage, AK 99510 Palmer, AK 99645
Email: rluhrs@ahfc.us Email: bskow@palmerak.org
This audit was performed using 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. This can
be achieved through the wiser and more efficient use of energy. Opportunities for application of
these energy saving methods are discussed in detail throughout this report.
The average annual energy costs at this facility are as follows:
Electricity $80,373.24
Natural Gas $38,650.68
Total $119,023.92
Energy Audit Report
April 16, 2012
pg. 5
The potential annual energy cost savings for each energy conservation measure are summarized
in the executive summary along with a more detailed description in the energy conservation
measures section. All calculations are available in the support documentation. This audit is
consistent with an ASHRAE Level 2 audit. The evaluations are based on estimations and
industry standard calculation methods. The cost of each measure for this level of auditing is +
30% until detailed engineering, specifications, and hard proposals are obtained. More detailed
analyses would require engineering simulation models, hard equipment specifications, and
contractor bid pricing.
The comprehensive energy audit covers the 32,500 square foot Ice Arena.
Utility information was collected and analyzed for 2 full year’s energy use of the building. The
utility information allows us to analyze the building’s operational characteristics and calculate
energy benchmarks for comparison to industry averages. A computer spreadsheet was used to
calculate benchmarks and to graph utility information (see the Benchmarking section).
An Energy Use Index (EUI) was established for the building. Energy Use Index (EUI) is
expressed in British Thermal Units/square foot/year (BTU/ft2/yr), which is used to compare
energy consumption to similar building types or to track consumption from year to year in the
same building. The EUI is calculated by converting the annual consumption of all energy sources
to BTU’s and dividing by the area (gross square footage) of the building. Blueprints and
drawings are utilized to verify the gross area of the facility. The EUI can be a good indicator of
the relative potential for energy savings. A low EUI indicates less potential for energy savings,
while a high EUI indicates poor building performance, therefore, a high potential for energy
savings.
The site survey provided information for interpreting where energy was spent and finding energy
savings opportunities within the facility. The building site visit was performed to survey all
major building components and systems. The site visit included an inspection of energy
consuming components.
Energy Audit Report
April 16, 2012
pg. 6
Executive Summary
The executive summary provides a snapshot of estimated improvement costs, Net Present Value
savings, breakeven costs and savings to investment ratios.
Energy Conservation Measures Recommendation Table
ECM
#Improvement Description Installed
Cost
Annualized
NPV Savings
NPV Savings Over
Improvement Life
Breakeven
Cost SIR
Simple
Payback
(Years)
ROI
1
Accent Refrigeration Proposal - Install heat
exchanger to capture waste heat from
compressors and distribute into rink.
$44,500 $28,925 $578,491 $622,991 13.0 2 1300%
2
Accent Refrigeration Proposal - Allow
discharge pressure to float to a lower level,
between 70 and 80 degrees fahrenheit vs. 90
degrees as observed during the audit. Install
VFD on one set of condensor fans to manage
discharge temperature.
$9,000 $4,366 $65,495 $74,495 7.3 2 728%
3
Accent Refrigeration Proposal - Integrate
the heating system with a building automation
system to lower the building temperature,
increase the humidity set point and increase
ice temperature.
$27,500 $9,159 $176,952 $204,452 6.4 4 643%
4
Accent Refrigeration Proposal - Install
three 120 gallon double walled heat reclaim
tanks to provide up to 300,000 BTU/h of hot
water pre-heat for Zamboni water.
$36,500 $4,139 $62,080 $98,580 1.7 7 170%
5
Accent Refrigeration Proposal - Install
VFD on larger brine pump programmed
through the computer system to select the
right speed based on glycol temperature, ice
temperature, suction temperature and TD to
provide the highest COP for a given
condition.
$9,000 $909 $13,642 $22,642 1.5 6 152%
6 Replace existing lamps in T8 fixtures with
25w lamps.$4,050 $347 $5,557 $9,607 1.4 7 137%
7
Replace existing metal halide lights with T5
Hi Bay lights with 54w lamps and electronic
ballasts.
$28,087 $14 $224 $28,311 0.0 16 1%
Total, Cost Effective Measures $158,637 $47,859 $902,441 $1,061,078 5.7 569%
8
Replace existing (2) existing Weil McLain
Boilers and (3) AO Smith water heaters with
(2) 95% AFUE Boilers.
$54,273 ($242)($4,840)$49,433 -0.1 22 -9%
9
Replace existing T12 fixtures in Locker
Rooms 2 & 3 with T8 fixtures and 25w
lamps.
$3,254 ($88)($1,406)$1,848 -0.4 27 -43%
Total, All Measures $216,164 $47,529 $896,195 $1,112,359 4.1 415%
Energy Audit Report
April 16, 2012
pg. 7
The ECM# is the priority ranking of an Energy Conservation Measure.
The Installed Cost is the full upfront cost expected for the improvement.
The Annualized NPV Savings reflects the annualized Net Present Value savings over the life of
the improvement, adjusted for general inflation, fuel price escalation, maintenance, discount rate
and installed cost.
The NPV Savings Over Improvement Life reflects the Net Present Value of cumulative savings
over the life of the improvement, adjusted for general inflation, fuel price escalation,
maintenance, discount rate and installed cost.
The Breakeven Cost is the maximum cost in today’s dollars that could be spent on an
improvement and still be cost effective.
The Savings to Investment Ratio (SIR) is a life-cycle cost measure calculated by dividing the
total savings over the life of a project (expressed in today’s dollars) by its investment costs. The
SIR is an indication of the profitability of a measure; the higher the SIR, the more profitable the
project. An SIR greater than 0 indicates a cost-effective project (i.e. more savings than cost).
The Return on Investment (ROI) listed for each ECM is the net savings of the energy
conservation measure divided by the installed cost listed.
The Simple Payback listed for each ECM is the number of years required to break even on the
investment, adjusted for general inflation, fuel price escalation, maintenance, discount rate and
installed cost.
The total savings listed for cost effective measures and all measures are for estimation purposes
only and cannot be considered 100% accurate because of the interrelation of the ECMs.
Energy Audit Report
April 16, 2012
pg. 8
Method of Analysis
Post site visit work included an evaluation of the information gathered, researching possible
conservation opportunities, organizing the audit into a comprehensive report, and making
recommendations on HVAC, lighting, and building envelope improvements. Collected data was
processed using Microsoft Excel spreadsheets and ASHRAE energy calculations to anticipate
energy usage for each of the proposed energy conservation measures (ECMs). The actual
building energy usage was entered directly from the utility bills provided. The anticipated energy
usage was compared to the historical data to determine energy savings for the proposed ECMs.
It is important to note that the savings represented in this report should not be considered
additive because of the interrelation of energy conservation measures. Implementation of more
than one ECM often affects the savings of other ECMs.
ECMs were determined by identifying the building’s unique properties and finding the most
beneficial energy saving measures available that met the specific needs of the facility. The
building construction type, function, operational schedule, existing conditions, and foreseen
future plans were accounted for in the evaluation and final recommendations. Energy savings are
calculated based on industry standard methods and estimations. Energy consumption is
calculated based on manufacturer’s information when new equipment is proposed.
Cost savings are calculated based on the actual historical energy costs for the facility. Installation
costs include materials and labor costs to estimate the full up-front investment required.
Measures were analyzed based on life-cycle-cost techniques, which include the initial cost of the
improvement, expected life of the improvement, annual energy cost, annual maintenance cost,
and a discount rate of 3.0%/year. Energy cost escalation rates are taken from the current Energy
Price Indices and Discount Factors for Life-Cycle Cost Analysis from the US Department of
Commerce. Maintenance costs are estimated at 2% of fuel cost related to an improvement unless
otherwise noted. Expected life of improvements is taken from industry and government sources.
Future savings are discounted to the present to account for the time-value of money (i.e. money’s
ability to earn interest over time).
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. The design professional or other persons
following the recommendations shall accept responsibility and liability for the results.
Energy Audit Report
April 16, 2012
pg. 9
Audit Overview/Building Description
The Palmer Ice Rink is a 35,200 square foot facility built in 2004. At the time of the energy audit
a locker room addition on the south end of the building was planned but had not yet started. At
the time of the audit the building contained an ice surface, locker rooms, restroom, skate shop,
offices and mechanical areas.
The building is typically operated an average of 12 hours per day from August 1st April 1st.
Radiant heating over the stands is provided by infrared heaters used during games. The domestic
hot water is provided by three gas fired hot water heaters. Locker room, mechanical room,
Zamboni area and office heat is provided by two natural gas boilers. Heat in the ice arena itself is
provided by two forced air furnaces. The office/skate shop area is heated by a smaller forced air
furnace.
Refrigeration for the ice rink is provided by Anderson Ice Rink with two Vilter ES 350
compressors rated at 125 horsepower each. A 10 fan Russell Condenser is used to reject heat off
of the refrigeration plant.
Lighting over the ice sheet is provided by metal halide fixtures and the remainder of the interior
lighting is a combination of T8 and T12 fixtures with the majority being T8.
Because of the complexity of a refrigeration audit an outside contractor was used to provide
ideas for retrofit and energy conservation measures. Accent Refrigeration from Victoria, BC is a
leader in ice rink construction and energy efficiency, and provided much of the expertise for this
audit. Qualifications are available in the supporting documentation.
Energy conservation measures proposed by Accent Refrigeration for heat recovery have been
itemized and ranked by priority. However, integrating more than one of these proposals together
may result in better building conditions and improved efficiency when systems work together.
Contact Accent Refrigeration for additional details on integrating building systems and controls.
Energy Audit Report
April 16, 2012
pg. 10
Energy Conservation Measures
Energy conservation measures are those measures which are considered as having the potential
to be cost effective and appropriate energy improvement options for the building. Estimated
costs are taken from the current Craftsman National Estimator and are adjusted for zip code.
Different rates and averages can be applied to this report if requested.
Lighting and electrical improvements are based on usage estimates apparent at the time of the
audit and may not reflect actual usage or occupant behavior. Before committing to a complete
lighting retrofit, it is recommended that a small sample of the new lamps you intend to use be
installed and tested for a time before pursuing all of the recommended changes. Light output,
color rendition, color temperature and personal preference all play a part in a satisfactory lighting
retrofit. The benefit of reduced energy consumption is lost if fixtures have to be re-lamped after
the retrofit or people are not comfortable with a new lighting scheme.
Energy Audit Report
April 16, 2012
pg. 11
This ECM assumes a life expectancy of 20 years for this measure. The budget price of
$44,500.00 includes heat exchanger, air handler and piping. There are an estimated 600,000 BTU
per hour available off the compressor which logs show operates over 20 hour per day. This is
more than the estimated average daily gas consumption used for space heating in this arena.
ECM
#Improvement Description Installed
Cost
Annualized
NPV Savings
NPV Savings Over
Improvement Life
Breakeven
Cost SIR
Simple
Payback
(Years)
ROI
1
Accent Refrigeration Proposal - Install heat
exchanger to capture waste heat from
compressors and distribute into rink.
$44,500 $28,925 $578,491 $622,991 13.0 2 1300%
Energy Audit Report
April 16, 2012
pg. 12
This ECM assumes a life expectancy of 15 years for this measure. Typically for every degree
that discharge pressure is allowed to drop there is a 1.5% reduction in operating cost.
ECM
#Improvement Description Installed
Cost
Annualized
NPV Savings
NPV Savings Over
Improvement Life
Breakeven
Cost SIR
Simple
Payback
(Years)
ROI
2
Accent Refrigeration Proposal - Allow
discharge pressure to float to a lower level,
between 70 and 80 degrees fahrenheit vs. 90
degrees as observed during the audit. Install
VFD on one set of condensor fans to manage
discharge temperature.
$9,000 $4,366 $65,495 $74,495 7.3 2 728%
Energy Audit Report
April 16, 2012
pg. 13
This ECM assumes a life expectancy of 20 years for this measure. A control system that is
programmed to be site specific would allow all of the major energy consuming components on
the refrigeration plant to start working together much more efficiently. This would permit user
group programming and night set back temperatures which are not being employed at all.
Presently everything is responding to random set points. The computer control would also
facilitate the operation of the recommended VFD’s as well providing operating data detailing
where the energy is being consumed.
ECM
#Improvement Description Installed
Cost
Annualized
NPV Savings
NPV Savings Over
Improvement Life
Breakeven
Cost SIR
Simple
Payback
(Years)
ROI
3
Accent Refrigeration Proposal - Integrate
the heating system with a building automation
system to lower the building temperature,
increase the humidity set point and increase
ice temperature.
$27,500 $9,159 $176,952 $204,452 6.4 4 643%
Energy Audit Report
April 16, 2012
pg. 14
This ECM assumes a life expectancy of 15 years for this measure.
ECM
#Improvement Description Installed
Cost
Annualized
NPV Savings
NPV Savings Over
Improvement Life
Breakeven
Cost SIR
Simple
Payback
(Years)
ROI
4
Accent Refrigeration Proposal - Install
three 120 gallon double walled heat reclaim
tanks to provide up to 300,000 BTU/h of hot
water pre-heat for Zamboni water.
$36,500 $4,139 $62,080 $98,580 1.7 7 170%
Energy Audit Report
April 16, 2012
pg. 15
This ECM assumes a life expectancy of 15 years for this measure. This measure will work most
efficiently when combined with the building control system noted in ECM #3.
ECM
#Improvement Description Installed
Cost
Annualized
NPV Savings
NPV Savings Over
Improvement Life
Breakeven
Cost SIR
Simple
Payback
(Years)
ROI
5
Accent Refrigeration Proposal - Install
VFD on larger brine pump programmed
through the computer system to select the
right speed based on glycol temperature, ice
temperature, suction temperature and TD to
provide the highest COP for a given
condition.
$9,000 $909 $13,642 $22,642 1.5 6 152%
Energy Audit Report
April 16, 2012
pg. 16
This ECM assumes a life expectancy of 16 years for this measure.
ECM
#Improvement Description Installed
Cost
Annualized
NPV Savings
NPV Savings Over
Improvement Life
Breakeven
Cost SIR
Simple
Payback
(Years)
ROI
6 Replace existing lamps in T8 fixtures with
25w lamps.$4,050 $347 $5,557 $9,607 1.4 7 137%
Energy Audit Report
April 16, 2012
pg. 17
This ECM assumes a life expectancy of 16 years for this measure. It is recommended that
fixtures capable of multi-level switching be installed which would provide more uniform light
coverage over the ice at lower wattage levels. A typical 6 lamp T5 replacement fixture could be
controlled to provide 2, 4, or 6 lamps on at a time depending on need. This will increase energy
savings significantly over this estimate.
ECM
#Improvement Description Installed
Cost
Annualized
NPV Savings
NPV Savings Over
Improvement Life
Breakeven
Cost SIR
Simple
Payback
(Years)
ROI
7
Replace existing metal halide lights with T5
Hi Bay lights with 54w lamps and electronic
ballasts.
$28,087 $14 $224 $28,311 0.0 16 1%
Energy Audit Report
April 16, 2012
pg. 18
This ECM assumes a life expectancy of 20 years for this measure. This ECM also assumes no
other heat recovery measures are installed and gas utilization levels remain consistent in the
future. Installation of any heat recovery measures will decrease the cost effectiveness of this
measure.
ECM
#Improvement Description Installed
Cost
Annualized
NPV Savings
NPV Savings Over
Improvement Life
Breakeven
Cost SIR
Simple
Payback
(Years)
ROI
8
Replace existing (2) existing Weil McLain
Boilers and (3) AO Smith water heaters with
(2) 95% AFUE Boilers.
$54,273 ($242)($4,840)$49,433 -0.1 22 -9%
Energy Audit Report
April 16, 2012
pg. 19
This ECM assumes a life expectancy of 16 years for this measure.
ECM
#Improvement Description Installed
Cost
Annualized
NPV Savings
NPV Savings Over
Improvement Life
Breakeven
Cost SIR
Simple
Payback
(Years)
ROI
9
Replace existing T12 fixtures in Locker
Rooms 2 & 3 with T8 fixtures and 25w
lamps.
$3,254 ($88)($1,406)$1,848 -0.4 27 -43%
Energy Audit Report
April 16, 2012
pg. 20
Operations and Maintenance Measures
Ice Temperature – Records indicate that the ice temperature is kept at an average of 15.4 degrees.
Increasing the ice temperature to 22 degrees for hockey and 25 degrees for recreational skating
would save substantial energy. Programming ice temperature setbacks at night and during
unoccupied times will save considerable energy as well. Consider scheduling figure skaters or
others that prefer warmer ice in the morning and hockey players in the afternoon and evening to
take advantage of the energy savings of maintaining warmer ice. Controlling rink temperature
automatically through a building automation system as recommended in ECM #3 would
optimize ice temperature and conditions.
Ice Thickness – Reducing ice thickness to as thin as practicable will reduce refrigeration costs.
Each additional inch of ice costs an additional 10% in refrigeration. ¾” of ice is considered
optimal thickness, although most rinks now maintain at least 1.25” of ice for liability reasons.
Zamboni Filling – A gas pump type nozzle should be installed on the Zamboni fill that
automatically shuts off water flow when the tank if full. This prevents a potentially he waste of
heated water when the Zamboni is overfilled.
Dehumidification – The Munters dehumidifier core is very dirty and needs cleaned. This will
restore the drying capability of this system and save considerable money by not having to run the
system as much. It was also noted during the audit that the pre-filters were extremely dirty which
is also reducing effectiveness and causing unnecessary fuel burn. Additionally, the humidity
levels in the rink during the audit were much lower than is required for good building
performance. Allowing humidity to gradually increase in the rink and keeping it at a level just
below dew point will save considerable dehumidification energy as well.
Water Purification – Consider installing a water purifying system. Pure water will freeze at a
higher temperature and will bond with the ice surface better, allowing for lower Zamboni
temperatures as well as reducing the load on the refrigeration system. Flood water temperature
can be lowered to as low as 130 degrees.
Staff Training – Visit www.energystar.gov for free training materials and courses on energy
conservation and awareness for building staff. Live web conferences, animated presentations and
pre-recorded trainings are just some of the tools available. Creating an inclusive strategy that
establishes roles and actions throughout the organization can help to integrate good energy
management practices. When developing an action plan, consider brainstorming with various
departments to identify ways they can contribute.
Portfolio Manager – Consider utilizing EPA’s Portfolio Manager, which is an online system that
allows building personnel to track building performance and improve energy efficiency across
multiple buildings. You can also contact your energy auditor for additional information about
this program. See www.energystar.gov
Energy Audit Report
April 16, 2012
pg. 21
After Hours – The building manager/operator should be tasked with turning off all non-essential
equipment at night, on weekends, or during other non-occupied times. Power strips can be turned
off during off hours; also power strips can be connected to timers or occupancy sensors. Smart
power strips with built-in occupancy sensors or activity sensors are available.
Plug Loads – Plug loads use up to an estimated 20% of electrical energy in commercial
buildings. Most plugged in devices consume energy even when off. Power is drawn by devices
in passive standby, such as a computer in “sleep” mode or a clock on a microwave, and active
standby such as when a screen saver is on a computer screen or television screen. The majority
of plug loads come from office equipment (computers, printers, copiers, etc.) and appliances
(refrigerators, coffee machines, etc.). As equipment deteriorates or is scheduled for replacement,
it is recommended that it be replaced with EnergyStar certified equipment.
Air Handlers – Filters and coils should be cleaned/replaced periodically to ensure proper airflow.
Dirty filter/coils decrease heat transfer ability and efficiency of the system. Belts should be
checked regularly and tightened when necessary.
Energy Audit Report
April 16, 2012
pg. 22
Benchmark Information
Benchmarking and analysis of the utility bills was used to collect data about the building in terms
of energy usage patterns, consumption, and comparison with similar buildings. Benchmarking
was used to identify energy usage patterns and trends that showed a need for specific
investigation of certain systems. Benchmarking also identified potential issues in how the
building is operated which may lead to energy savings. Analysis of utility data provides a context
for the audit.
The BTU usage of the building per square foot is over two times more than the national average
of public assembly buildings. This is not surprising since public assembly encompasses a diverse
population of buildings other than ice rinks. Unfortunately there is not national benchmark for
ice rinks to compare to. However the high usage does indicate a large energy savings potential.
Energy Audit Report
April 16, 2012
pg. 23
Electrical usage in terms of BTU per square foot is 33% higher than the national average for public
assembly buildings.
Energy Audit Report
April 16, 2012
pg. 24
Natural gas use for this building is four times higher than the national average for public assembly
buildings. Even though an ice rink naturally has a high fossil fuel demand there is still a huge potential for
energy savings.
Energy Audit Report
April 16, 2012
pg. 25
The energy cost total shows electricity nearly double that of natural gas. The cost per therm of electricity
is over three times of the cost per therm of gas, making electrical efficiency a priority.
Energy Audit Report
April 16, 2012
pg. 26
Natural gas far outweighs electricity in the number of BTUs consumed by this building.
Energy Audit Report
April 16, 2012
pg. 27
Electrical use has increased only slightly over the benchmark period. It can easily be seen when the rink
operates and when it shuts down in the summer months.
Energy Audit Report
April 16, 2012
pg. 28
Natural gas consumption has remained steady over the benchmark period.
Energy Audit Report
April 16, 2012
pg. 29
Natural gas consumption and electrical consumption follow a similar usage pattern, which is to
be expected because of the interrelation of the heating and refrigeration systems.
Energy Audit Report
April 16, 2012
pg. 30
Supporting Documentation
This section contains all of the supporting documentation for the audit, which may include all
calculations, assumptions, and worksheets used to generate conclusions.
Equipment Inventory
Designation Location Function Make Model Type Capacity Efficiency Motor
Size Notes Median
Service Life
Est. Remaining
Useful Life
Boilers Utility Room Locker, slab heat Weil McLain PFG-5 Gas 240,000
BTU/h 81%Two boilers in series 20 12
DHW Utility Room Domestic Hot Water AO Smith BTR 197
110 Gas 199,000
BTU/h 80%Three tanks in series 15 7
Rink Space
Heaters Mezzanine Space Heat Greenheck DGX-115-
H22-HZ Gas 490,000
BTU/h 92%Two separate
heaters 20 12
Rink Radiant
Heaters
Over
Bleachers Space Heat Schwank Gas 60,000
BTU/h 99%5 individual heaters 20 12
Utility Room
Unit Heater Utility Room Heat Modine HC60031 Water 20 12
Zamboni Area
Unit Heater Zamboni Area Heat Modine HC60031 Water 20 12
Compressor
Room Unit
Heater
Compressor
Room Heat Modine HC60031 Water 20 12
Cabinet Unit
Heater Main Entry Heat AO Smith Water Located in ceiling 20 12
Restroom
Exhausts Restrooms Exhaust Leeson 0.75 15 7
Locker Room
Exhausts Lockers Exhaust 15 7
Space Heat
Office,
Vestibule,
Skate Shopp,
Concession
Heat/Ventilation McQuay 92 20 12
Compressors Compressor
Room
Refrigeration
Compressors Vilter 350ES Reciproc
ating 94.5 125 Two indentical units
in parallel 15 7
Glycol Pump 1 Compressor
Room
Pump Glycol Under
Ice Bell and Gossett 1510 91 20 15 7
Glycol Pump 2 Compressor
Room
Pump Glycol Under
Ice Marathon 86.5 10 15 7
Condesner Exterior Condesner Russel VAC 158 1.5 ea.5 banks of 2 fans 15 7
Dehumidifier Mezzanine Dehumidification Munters A-20-G Gas 400,000
BTU/h 16 8
Energy Audit Report
April 16, 2012
pg. 31
Benchmark Data
Building Designation:Electric Meter #
Square footage of conditioned area:35200 Gas Meter #
Number of billing periods 24
Year:
Month Days in Billing
Period
Electric KWH Electric
Demand KW
Electric
Cost
$/KWH
Electric
Cost
Demand
Cost
Electric
MMBtu
Load
Factor
% of bill
from
demand
Dec-08 28 61,200 $0.15 $9,088.94 208.88 #DIV/0!0.0%
Jan-09 30 66,160 $0.15 $9,762.07 225.80 #DIV/0!0.0%
Feb-09 33 62,240 $0.15 $9,230.09 212.43 #DIV/0!0.0%
Mar-09 29 38,560 $0.14 $5,501.27 131.61 #DIV/0!0.0%
Apr-09 30 4,320 $0.15 $663.60 14.74 #DIV/0!0.0%
May-09 31 4,720 $0.15 $712.87 16.11 #DIV/0!0.0%
Jun-09 29 51,280 $0.14 $7,040.91 175.02 #DIV/0!0.0%
Jul-09 28 67,760 $0.13 $8,625.43 231.26 #DIV/0!0.0%
Aug-09 32 73,520 $0.13 $9,312.69 250.92 #DIV/0!0.0%
Sep-09 29 72,000 $0.12 $8,719.35 245.74 #DIV/0!0.0%
Oct-09 32 65,920 $0.12 $8,029.20 224.98 #DIV/0!0.0%
Nov-09 30 66,000 $0.12 $8,048.02 225.26 #DIV/0!0.0%
Dec-09 28 61,680 $0.11 $6,960.00 210.51 #DIV/0!0.0%
Jan-10 28 61,440 $0.11 $6,946.00 209.69 #DIV/0!0.0%
Feb-10 34 70,400 $0.11 $7,846.00 240.28 #DIV/0!0.0%
Mar-10 30 43,680 $0.11 $4,799.00 149.08 #DIV/0!0.0%
Apr-10 31 4,560 $0.12 $566.00 15.56 #DIV/0!0.0%
May-10 28 4,640 $0.13 $584.00 15.84 #DIV/0!0.0%
Jun-10 29 45,280 $0.12 $5,241.00 154.54 #DIV/0!0.0%
Jul-10 28 81,920 $0.10 $8,355.00 279.59 #DIV/0!0.0%
Aug-10 31 77,040 $0.10 $7,937.00 262.94 #DIV/0!0.0%
Sep-10 29 84,400 $0.11 $9,286.00 288.06 #DIV/0!0.0%
Oct-10 33 81,120 $0.11 $8,735.00 276.86 #DIV/0!0.0%
Nov-10 28 80,880 $0.11 $8,757.00 276.04 #DIV/0!0.0%
#DIV/0!0.00 #DIV/0!#DIV/0!
#DIV/0!0.00 #DIV/0!#DIV/0!
#DIV/0!0.00 #DIV/0!#DIV/0!
#DIV/0!0.00 #DIV/0!#DIV/0!
#DIV/0!0.00 #DIV/0!#DIV/0!
#DIV/0!0.00 #DIV/0!#DIV/0!
#DIV/0!0.00 #DIV/0!#DIV/0!
#DIV/0!0.00 #DIV/0!#DIV/0!
#DIV/0!0.00 #DIV/0!#DIV/0!
#DIV/0!0.00 #DIV/0!#DIV/0!
#DIV/0!0.00 #DIV/0!#DIV/0!
#DIV/0!0.00 #DIV/0!#DIV/0!
Montly Average 29.92 55446.67 0.00 #DIV/0!$6,697.77 $0.00 189.24 #DIV/0!#DIV/0!
Total 718 1,330,720 N/A N/A #########$0.00 4,541.75 N/A N/A
Monthly Benchmark Occupancy Public Assembly ..............125.10667
% Difference Size 10,001 to 100,000 Square Feet 151.26%
Palmer Ice Rink
Energy Use Index Form 1
Electricity
Energy Audit Report
April 16, 2012
pg. 32
Gas Usage
Therms
Gas Cost $Gas Unit
Cost
$/Therm
Gas MMBtu
6,017.0 $6,094.62 $1.01 601.70
5,697.0 $5,774.21 $1.01 569.70
4,829.0 $4,904.04 $1.02 482.90
3,665.0 $3,737.08 $1.02 366.50
146.0 $210.89 $1.44 14.60
734.0 $799.42 $1.09 73.40
1,072.0 $1,139.28 $1.06 107.20
2,605.0 $2,676.78 $1.03 260.50
3,530.0 $3,605.00 $1.02 353.00
3,793.0 $3,868.29 $1.02 379.30
4,195.0 $4,271.65 $1.02 419.50
5,998.0 $6,080.86 $1.01 599.80
4,412.0 $3,713.98 $0.84 441.20
5,573.0 $4,674.43 $0.84 557.30
3,825.0 $3,228.19 $0.84 382.50
3,594.0 $3,098.63 $0.86 359.40
1,773.0 $1,548.56 $0.87 177.30
454.0 $447.33 $0.99 45.40
293.0 $765.70 $2.61 29.30
2,717.0 $1,838.64 $0.68 271.70
2,707.0 $2,277.88 $0.84 270.70
4,033.0 $3,339.89 $0.83 403.30
5,682.0 $4,661.00 $0.82 568.20
5,537.0 $4,545.00 $0.82 553.70
#DIV/0!0.00
#DIV/0!0.00
#DIV/0!0.00
#DIV/0!0.00
#DIV/0!0.00
#DIV/0!0.00
#DIV/0!0.00
#DIV/0!0.00
#DIV/0!0.00
#DIV/0!0.00
#DIV/0!0.00
#DIV/0!0.00
3453.38 $3,220.89 #DIV/0!345.34
82,881.00 $77,301.35 N/A 8288.10
85.36
404.57%
Natural Gas
HDD CCD Production Btu/Sq. Ft Cost $/Sq
Ft
1664 23,028 $0.43
1662 22,600 $0.44
1400 19,754 $0.40
1340 14,151 $0.26
823 834 $0.02
445 2,543 $0.04
316 8,018 $0.23
171 13,971 $0.32
320 17,157 $0.37
507 17,757 $0.36
761 18,309 $0.35
1387 23,439 $0.40
1441 18,515 $0.30
1536 21,790 $0.33
1062 17,692 $0.31
1162 14,445 $0.22
797 5,479 $0.06
456 1,740 $0.03
328 5,223 $0.17
285 15,662 $0.29
288 15,160 $0.29
492 19,641 $0.36
875 24,007 $0.38
1174 23,572 $0.38
0 $0.00
0 $0.00
0 $0.00
0 $0.00
0 $0.00
0 $0.00
0 $0.00
0 $0.00
0 $0.00
0 $0.00
0 $0.00
0 $0.00
574.78 0.00 0.00 15,187 $0.28
20692.00 0.00 0.00 364,484 $6.76
6,458
235.15%
EUI
Energy Audit Report
April 16, 2012
pg. 33
Climate & Fuel Assumptions
Client Name:Palmer Ice Rink Address:
Square Footage 23905
Days
Occupied
per Year State HDD CDD
Avg.
Temp
365 Alaska 10,573 0 36.0
Fuels
Natural Gas $0.93 $ Per CCF $0.90 Per Therm
Oil $ Per Gallon $0.00 Per Therm
Electricity $0.12 $ per KWH $3.52 Per Therm
Propane $ per Gallon $0.00 Per Therm
Wood $ Per Cord $0.00 Per Therm
Coal $ Per Ton $0.00 Per Therm
Electrical Demand Charge Kw/Month
City
Palmer IAS
Client Information
Energy Audit Report
April 16, 2012
pg. 34
Discount, Fuel Escalation, and Inflation Assumptions
1 = Yes Real Discount Rate (i) . . . . . . . . . . .2005 - 2040 . . . . . . . . 3.0%
0 = No Electricity. . . . . . . . . . . . . . . . . . . . .2005 - 2015 . . .2.7%
IOU Electricity Source*1 (Investor Owned Utility)2016 - 2025 . . .3.1%
POU Electricity Source**0 2026 - 2040 . . .4.7%
Natural Gas Fuel?1 Natural Gas . . . . . . . . . . . . . . . . . . . . . . . .2005 - 2015 . . .1.3%
Propane Fuel?0 And other fossil fuels 2016 - 2025 . . .6.5%
Oil Fuel?0 2026 - 2040 . . .10.3%
Maintenance . . . . . . . . . . . . . . . . . .2005 - 2040 . . . . . . . . 3.0%
Inflation 2005 - 2040 . . . . . . . . 3.0%
* IOU = Invester Owned Utility
** POU = Publicly Owned Utility
F U E L P R I C E E S C A L A T I O N I N F O R M A T I O N:
Select value and key in above as decimal fraction.
Years:
Electricity 2005 - 2015 . . .2.7%0.027
(Investor-Owned)2016 - 2025 . . .3.1%0.031
2026 - 2040 . . .4.7%0.047
Electricity 2005 - 2015 . . .2.7%0.027
(Public Owned)2016 - 2025 . . .3.1%0.031
2026 - 2040 . . .4.7%0.047
Natural Gas 2005 - 2015 . . .1.3%0.013
2016 - 2025 . . .6.5%0.065
2026 - 2040 . . .10.3%0.103
Oil 2005 - 2015 . . .1.3%0.013
2016 - 2025 . . .6.5%0.065
2026 - 2040 . . .10.3%0.103
Propane 2005 - 2015 . . .Assume same as natural gas
2016 - 2025 . . .
2026 - 2040 . . .
Energy Audit Report
April 16, 2012
pg. 35
Accent Refrigeration Proposal
Energy Audit Report
April 16, 2012
pg. 36
Energy Audit Report
April 16, 2012
pg. 37
Accent Refrigeration – Art Sutherland Bio
Energy Audit Report
April 16, 2012
pg. 38
Energy Distribution Assumptions
No sub-metering data is available to determine how much energy systems and functions are
consuming past the main meter. Estimates are based on ASHRAE and International Ice Hockey
Federation guidelines for energy distribution within ice rinks.
Energy Audit Report
April 16, 2012
pg. 39
ECM #1 Calculations
System 1 - Location Served:
Fuel Type AFUE Thermostat
Setpoint
Full Load KW
(Electric Only)
Mo/Yr Operation
(Electric Only)Cost
Existing Natural Gas 95.00%50.0 N/A
Proposed 100.00%50.0 $44,500.00
Heating Data
100
Volume Served
100
Description
of Retrofit
Boiler
Accent Refrigeration Proposal - Install heat exchanger to capture waste heat from
compressors and install new air handler or use existing air handlers to send waste heat
$44,500.00Estimated Cost of Heating System
Replacements
New Heating SystemsExisting Heating Systems
26936 25,589.20
Estimated Demand Charges (electric)
Estimated Savings per Year
$0.00
$24,368.17
$24,368.17
$0.90
50
Average Cost Per Therm of Heating Fuels,
proportional to volume
Average Thermostat Setpoint, proportional
to volume
Therms required to heat the building over
1 year
Estimated Cost over 1 year $0.00
Average AFUE of All Heating Systems,
proportional to volume 95.00%
Heating System Summary
$0.00
50
$0.00
100.00%
Energy Audit Report
April 16, 2012
pg. 40
---------------------A N N U A L R E A L C A S H F L O W S C U R R E N T----------------------------------------------------------------------------------A N N U A L R E A L C A S H F L O W S P R O P O S E D----------------------------- (Begin)First &AnnualAnnualAnnualTotalPresentPresentPresent(Begin)First &AnnualAnnualAnnualTotalPresentPresentPresentPresent Value of YearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofYearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofCumulative CostsCostsCostsCostsCostsFactorAnnualCumulativeCostsCostsCostsCostsCostsFactorAnnualCumulativeSavings2,012$48724,368$ $0$24,856(1+i)^-nCostsCosts2,012$44,500$0-$ $0$0(1+i)^-nCostsCosts2,012$0------$01.00$0-$ 2,012$44,500------$44,5001.00$44,500$44,5002,01350224,685025,1870.9724,45324,453.34$ 2,013000000.970$44,500(20,047)$ 2,014051725,006025,5230.9424,05848,511$ 2,014000000.940$44,5004,011$ 2,015053325,331025,8630.9223,66972,180$ 2,015000000.920$44,50027,680$ 2,016054925,660026,2090.8923,28695,466$ 2,016000000.890$44,50050,966$ 2,017056527,328027,8930.8624,061119,527$ 2,017000000.860$44,50075,027$ 2,018058229,104029,6860.8424,862144,389$ 2,018000000.840$44,50099,889$ 2,019059930,996031,5960.8125,690170,079$ 2,019000000.810$44,500125,579$ 2,020061733,011033,6280.7926,547196,626$ 2,020000000.790$44,500152,126$ 2,021063635,157035,7930.7727,432224,058$ 2,021000000.770$44,500179,558$ 2,022065537,442038,0970.7428,348252,405$ 2,022000000.740$44,500207,905$ 2,023067539,876040,5500.7229,294281,700$ 2,023000000.720$44,500237,200$ 2,024069542,468043,1620.7030,273311,973$ 2,024000000.700$44,500267,473$ 2,025071645,228045,9440.6831,285343,258$ 2,025000000.680$44,500298,758$ 2,026073748,168048,9050.6632,332375,590$ 2,026000000.660$44,500331,090$ 2,027075953,129053,8880.6434,589410,179$ 2,027000000.640$44,500365,679$ 2,028078258,601059,3830.6237,006447,185$ 2,028000000.620$44,500402,685$ 2,029080664,637065,4430.6139,594486,779$ 2,029000000.610$44,500442,279$ 2,030083071,295072,1250.5942,366529,145$ 2,030000000.590$44,500484,645$ 2,031085578,638079,4930.5745,334574,478$ 2,031000000.570$44,500529,978$ 2,032088086,738087,6180.5548,512622,991$ 2,032000000.550$44,500578,491$ 2,033090795,672096,5790.5451,916674,906$ 2,033000000.540$44,500630,406$ 2,0340934105,5260106,4600.5255,561730,467$ 2,034000000.520$44,500685,967$ 2,0350962116,3960117,3570.5159,464789,931$ 2,035000000.510$44,500745,431$ 2,0360991128,3840129,3750.4963,644853,575$ 2,036000000.490$44,500809,075$ 2,03701,020141,6080142,6280.4868,120921,695$ 2,037000000.480$44,500877,195$ 2,03801,051156,1930157,2450.4672,913994,609$ 2,038000000.460$44,500950,109$ 2,03901,083172,2810173,3640.4578,0471,072,655$ 2,039000000.450$44,500########2,04001,115190,0260191,1410.4483,5431,156,199$ 2,040000000.440$44,500########2,04101,149209,5990210,7480.4289,4301,245,629$ 2,041000000.420$44,500########2,04201,183231,1880232,3710.4195,7341,341,362$ 2,042000000.410$44,500########Totals:$0$23,882$2,429,373$0$2,453,255$1,341,362=30-year LCCTotals:$44,500$0$0$0$44,500$44,500=30-year LCC
Energy Audit Report
April 16, 2012
pg. 41
ECM #2 Calculations
Horsepower Motor
Loading
Efficiency KW Operating
Hours/yr
Yearly KW
Demand
Yearly KW
Demand
Cost
Yearly KWH
Consumption
Yearly KWH
Cost
Totals
Existing 125 54.5 94.5 53.78 5040 645.35 $0.00 271,047 $32,525.60 $32,525.60
Proposed 125 46.3 94.5 45.69 5040 548.25 $0.00 230,265 $27,631.84 $27,631.84
Savings 97.10 $0.00 40,781 $4,893.76 $4,893.76
Installed Cost $9,000.00
Payback (years)1.84
Description of Improvement
Motor #1
Accent Refrigeration Proposal - Allow discharge pressure to float to a lower level, between 70 and 80 degrees fahrenheit vs. 90 degrees as observed
during the audit. Install VFD on one set of condensor fans to manage discharge temperature.
Energy Audit Report
April 16, 2012
pg. 42
---------------------A N N U A L R E A L C A S H F L O W S C U R R E N T----------------------------------------------------------------------------------A N N U A L R E A L C A S H F L O W S P R O P O S E D------------------------------- (Begin)First &AnnualAnnualAnnualTotalPresentPresentPresent(Begin)First &AnnualAnnualAnnualTotalPresentPresentPresentPresent Value of YearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofYearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofCumulative CostsCostsCostsCostsCostsFactorAnnualCumulativeCostsCostsCostsCostsCostsFactorAnnualCumulativeSavings2,012$651-$ $32,526$33,176(1+i)^-nCostsCosts2,012$9,000$553-$ $27,632$28,184(1+i)^-nCostsCosts2,012$0------$01.00$0-$ 2,012$9,000------$9,0001.00$9,000$9,0002,0130670033,40434,0740.9733,08133,081.38$ 2,0130569028,37828,9470.9728,104$37,104(4,023)$ 2,0140690034,30634,9960.9432,98766,068$ 2,0140586029,14429,7300.9428,024$65,128941$ 2,0150711035,23235,9430.9232,89398,961$ 2,0150604029,93130,5350.9227,944$93,0715,890$ 2,0160732036,18336,9150.8932,799131,760$ 2,0160622030,73931,3610.8927,864$120,93510,824$ 2,0170754037,30538,0590.8632,830164,590$ 2,0170641031,69232,3330.8627,890$148,82615,764$ 2,0180777038,46139,2380.8432,861197,451$ 2,0180660032,67433,3340.8427,917$176,74320,708$ 2,0190800039,65440,4540.8132,893230,344$ 2,0190680033,68734,3670.8127,944$204,68725,657$ 2,0200824040,88341,7070.7932,924263,268$ 2,0200700034,73235,4320.7927,970$232,65730,611$ 2,0210849042,15042,9990.7732,955296,223$ 2,0210721035,80836,5290.7727,997$260,65335,569$ 2,0220874043,45744,3310.7432,987329,209$ 2,0220743036,91837,6610.7428,023$288,67740,532$ 2,0230900044,80445,7050.7233,018362,227$ 2,0230765038,06338,8280.7228,050$316,72745,500$ 2,0240927046,19347,1210.7033,049395,277$ 2,0240788039,24340,0310.7028,077$344,80450,473$ 2,0250955047,62548,5800.6833,081428,357$ 2,0250812040,45941,2710.6828,104$372,90755,450$ 2,0260984049,10150,0850.6633,112461,470$ 2,0260836041,71442,5500.6628,130$401,03860,432$ 2,02701,013051,40952,4230.6433,648495,118$ 2,0270861043,67444,5350.6428,585$429,62365,495$ 2,02801,044053,82554,8690.6234,193529,311$ 2,0280887045,72746,6140.6229,048$458,67170,639$ 2,02901,075056,35557,4300.6134,746564,057$ 2,0290913047,87648,7890.6129,518$488,19075,867$ 2,03001,107059,00460,1110.5935,309599,366$ 2,0300941050,12651,0670.5929,997$518,18681,180$ 2,03101,141061,77762,9180.5735,881635,247$ 2,0310969052,48253,4510.5730,482$548,66986,578$ 2,03201,175064,68165,8550.5536,463671,710$ 2,0320998054,94955,9470.5530,976$579,64592,065$ 2,03301,210067,72168,9310.5437,054708,763$ 2,03301,028057,53158,5590.5431,479$611,12497,640$ 2,03401,246070,90372,1500.5237,654746,418$ 2,03401,059060,23561,2940.5231,989$643,113103,305$ 2,03501,284074,23675,5200.5138,265784,683$ 2,03501,091063,06664,1570.5132,508$675,621109,062$ 2,03601,322077,72579,0470.4938,886823,569$ 2,03601,123066,03167,1540.4933,035$708,656114,913$ 2,03701,362081,37882,7400.4839,517863,086$ 2,03701,157069,13470,2910.4833,571$742,227120,859$ 2,03801,403085,20386,6060.4640,159903,245$ 2,03801,192072,38373,5750.4634,116$776,344126,901$ 2,03901,445089,20790,6520.4540,811944,055$ 2,03901,228075,78577,0130.4534,670$811,014133,041$ 2,04001,488093,40094,8880.4441,474985,529$ 2,04001,264079,34780,6120.4435,233$846,248139,281$ 2,04101,533097,79099,3230.4242,1471,027,676$ 2,04101,302083,07784,3790.4235,806$882,053145,623$ 2,04201,5790102,386103,9650.4142,8321,070,508$ 2,04201,341086,98188,3230.4136,388$918,441152,067$ Totals:$0$31,877$0$1,755,758$1,787,635$1,070,508=30-year LCCTotals:$9,000$27,081$0$1,491,589$1,527,670$918,441=30-year LCC
Energy Audit Report
April 16, 2012
pg. 43
ECM #3 Calculations
System 1 - Location Served:
Fuel Type AFUE Thermostat
Setpoint
Full Load KW
(Electric Only)
Mo/Yr Operation
(Electric Only)Cost
Existing Natural Gas 95.00%50.0 N/A
Proposed Natural Gas 95.00%42.5 $21,450.00
Heating Data
100
Volume Served
100
Description
of Retrofit
Accent Refrigeration - Install integrated building controls to reduce average rink
temperature from 50 degrees to 42.5 degrees.
$6,091.62
Average AFUE of All Heating Systems,
proportional to volume 95.00%
Heating System Summary
$0.90
42.5
$0.00
95.00%
$0.90
50
Average Cost Per Therm of Heating Fuels,
proportional to volume
Average Thermostat Setpoint, proportional
to volume
Therms required to heat the building over
1 year
Estimated Cost over 1 year
$21,450.00Estimated Cost of Heating System
Replacements
New Heating SystemsExisting Heating Systems
14503 6,733.54
Estimated Demand Charges (electric)
Estimated Savings per Year
$0.00
$13,120.42
$7,028.80
Energy Audit Report
April 16, 2012
pg. 44
---------------------A N N U A L R E A L C A S H F L O W S C U R R E N T----------------------------------------------------------------------------------A N N U A L R E A L C A S H F L O W S P R O P O S E D----------------------------- (Begin)First &AnnualAnnualAnnualTotalPresentPresentPresent(Begin)First &AnnualAnnualAnnualTotalPresentPresentPresentPresent Value of YearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofYearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofCumulative CostsCostsCostsCostsCostsFactorAnnualCumulativeCostsCostsCostsCostsCostsFactorAnnualCumulativeSavings2,012$26213,120$ $0$13,383(1+i)^-nCostsCosts2,012$21,450$1226,092$ $0$6,213(1+i)^-nCostsCosts2,012$0------$01.00$0-$ 2,012$21,450------$21,4501.00$21,450$21,4502,01327013,291013,5610.9713,16613,166.28$ 2,01301256,17106,2960.976,113$27,563(14,397)$ 2,014027813,464013,7420.9412,95326,120$ 2,01401296,25106,3800.946,014$33,577(7,457)$ 2,015028713,639013,9260.9212,74438,863$ 2,01501336,33206,4650.925,917$39,494(630)$ 2,016029513,816014,1110.8912,53851,401$ 2,01601376,41506,5520.895,821$45,3156,086$ 2,017030414,714015,0180.8612,95564,356$ 2,01701416,83206,9730.866,015$51,33013,027$ 2,018031315,671015,9840.8413,38677,742$ 2,01801457,27607,4210.846,215$57,54520,198$ 2,019032316,689017,0120.8113,83291,575$ 2,01901507,74907,8980.816,422$63,96727,608$ 2,020033217,774018,1060.7914,293105,868$ 2,02001548,25208,4070.796,636$70,60335,265$ 2,021034218,929019,2720.7714,770120,638$ 2,02101598,78908,9480.776,858$77,46143,178$ 2,022035320,160020,5120.7415,263135,901$ 2,02201649,36009,5240.747,086$84,54751,354$ 2,023036321,470021,8330.7215,773151,674$ 2,02301699,968010,1370.727,323$91,87059,804$ 2,024037422,866023,2400.7016,300167,974$ 2,024017410,616010,7900.707,568$99,43868,536$ 2,025038524,352024,7370.6816,845184,819$ 2,025017911,306011,4850.687,821$107,25977,560$ 2,026039725,935026,3320.6617,408202,227$ 2,026018412,041012,2250.668,082$115,34186,886$ 2,027040928,606029,0150.6418,624220,851$ 2,027019013,281013,4710.648,647$123,98896,863$ 2,028042131,552031,9740.6219,925240,775$ 2,028019614,649014,8450.629,251$133,239107,537$ 2,029043434,802035,2360.6121,318262,094$ 2,029020116,158016,3600.619,898$143,136118,957$ 2,030044738,387038,8340.5922,811284,904$ 2,030020717,823018,0300.5910,591$153,727131,177$ 2,031046042,341042,8010.5724,409309,313$ 2,031021419,658019,8720.5711,333$165,060144,254$ 2,032047446,702047,1760.5526,120335,433$ 2,032022021,683021,9030.5512,127$177,187158,246$ 2,033048851,512052,0000.5427,953363,386$ 2,033022723,916024,1430.5412,978$190,165173,221$ 2,034050356,818057,3210.5229,915393,301$ 2,034023326,380026,6130.5213,889$204,054189,247$ 2,035051862,670063,1880.5132,017425,318$ 2,035024029,097029,3370.5114,865$218,919206,399$ 2,036053369,125069,6590.4934,267459,586$ 2,036024832,094032,3420.4915,910$234,829224,757$ 2,037054976,245076,7950.4836,678496,263$ 2,037025535,400035,6550.4817,029$251,858244,405$ 2,038056684,098084,6640.4639,258535,522$ 2,038026339,046039,3080.4618,227$270,085265,437$ 2,039058392,761093,3430.4542,022577,544$ 2,039027143,067043,3380.4519,510$289,595287,948$ 2,0400600102,3150102,9150.4444,982622,526$ 2,040027947,503047,7820.4420,884$310,480312,046$ 2,0410618112,8530113,4720.4248,151670,677$ 2,041028752,396052,6830.4222,356$332,836337,841$ 2,0420637124,4770125,1140.4151,545722,222$ 2,042029657,793058,0890.4123,932$356,767365,455$ Totals:$0$12,859$1,308,034$0$1,320,893$722,222=30-year LCCTotals:$21,450$5,970$607,301$0$634,722$356,767=30-year LCC
Energy Audit Report
April 16, 2012
pg. 45
Horsepower Motor
Loading
Efficiency KW Operating
Hours/yr
Yearly KW
Demand
Yearly KW
Demand
Cost
Yearly KWH
Consumption
Yearly KWH
Cost
Totals
Existing 125 54.5 94.5 53.78 5040 645.35 $0.00 271,047 $32,525.60 $32,525.60
Proposed 125 51.775 94.5 51.09 5040 613.08 $0.00 257,494 $30,899.32 $30,899.32
Savings 32.27 $0.00 13,552 $1,626.28 $1,626.28
Installed Cost $6,050.00
Payback (years)3.72
Description of Improvement
Motor #2
Accent Refrigeration - Install integrated building controls with setback on night ice temerpature.
Energy Audit Report
April 16, 2012
pg. 46
---------------------A N N U A L R E A L C A S H F L O W S C U R R E N T----------------------------------------------------------------------------------A N N U A L R E A L C A S H F L O W S P R O P O S E D------------------------------- (Begin)First &AnnualAnnualAnnualTotalPresentPresentPresent(Begin)First &AnnualAnnualAnnualTotalPresentPresentPresentPresent Value of YearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofYearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofCumulative CostsCostsCostsCostsCostsFactorAnnualCumulativeCostsCostsCostsCostsCostsFactorAnnualCumulativeSavings2,012$651-$ $32,526$33,176(1+i)^-nCostsCosts2,012$6,050$618-$ $30,899$31,517(1+i)^-nCostsCosts2,012$0------$01.00$0-$ 2,012$6,050------$6,0501.00$6,050$6,0502,0130670033,40434,0740.9733,08133,081.38$ 2,0130637031,73432,3700.9731,427$37,477(4,396)$ 2,0140690034,30634,9960.9432,98766,068$ 2,0140656032,59033,2460.9431,338$68,815(2,747)$ 2,0150711035,23235,9430.9232,89398,961$ 2,0150675033,47034,1460.9231,248$100,063(1,102)$ 2,0160732036,18336,9150.8932,799131,760$ 2,0160696034,37435,0700.8931,159$131,222538$ 2,0170754037,30538,0590.8632,830164,590$ 2,0170716035,44036,1560.8631,189$162,4102,179$ 2,0180777038,46139,2380.8432,861197,451$ 2,0180738036,53837,2760.8431,218$193,6293,823$ 2,0190800039,65440,4540.8132,893230,344$ 2,0190760037,67138,4310.8131,248$224,8775,467$ 2,0200824040,88341,7070.7932,924263,268$ 2,0200783038,83939,6220.7931,278$256,1547,113$ 2,0210849042,15042,9990.7732,955296,223$ 2,0210806040,04340,8490.7731,307$287,4628,761$ 2,0220874043,45744,3310.7432,987329,209$ 2,0220831041,28442,1150.7431,337$318,79910,410$ 2,0230900044,80445,7050.7233,018362,227$ 2,0230855042,56443,4190.7231,367$350,16612,061$ 2,0240927046,19347,1210.7033,049395,277$ 2,0240881043,88344,7640.7031,397$381,56313,714$ 2,0250955047,62548,5800.6833,081428,357$ 2,0250908045,24446,1510.6831,427$412,99015,368$ 2,0260984049,10150,0850.6633,112461,470$ 2,0260935046,64647,5810.6631,457$444,44617,023$ 2,02701,013051,40952,4230.6433,648495,118$ 2,0270963048,83949,8010.6431,966$476,41218,706$ 2,02801,044053,82554,8690.6234,193529,311$ 2,0280992051,13452,1260.6232,483$508,89520,416$ 2,02901,075056,35557,4300.6134,746564,057$ 2,02901,021053,53754,5590.6133,009$541,90422,153$ 2,03001,107059,00460,1110.5935,309599,366$ 2,03001,052056,05457,1060.5933,544$575,44823,918$ 2,03101,141061,77762,9180.5735,881635,247$ 2,03101,084058,68859,7720.5734,087$609,53525,712$ 2,03201,175064,68165,8550.5536,463671,710$ 2,03201,116061,44762,5630.5534,639$644,17427,535$ 2,03301,210067,72168,9310.5437,054708,763$ 2,03301,150064,33565,4840.5435,201$679,37529,388$ 2,03401,246070,90372,1500.5237,654746,418$ 2,03401,184067,35868,5420.5235,772$715,14731,271$ 2,03501,284074,23675,5200.5138,265784,683$ 2,03501,220070,52471,7440.5136,352$751,49933,184$ 2,03601,322077,72579,0470.4938,886823,569$ 2,03601,256073,83975,0950.4936,942$788,44135,128$ 2,03701,362081,37882,7400.4839,517863,086$ 2,03701,294077,30978,6030.4837,541$825,98237,104$ 2,03801,403085,20386,6060.4640,159903,245$ 2,03801,333080,94382,2750.4638,151$864,13339,112$ 2,03901,445089,20790,6520.4540,811944,055$ 2,03901,373084,74786,1200.4538,770$902,90341,153$ 2,04001,488093,40094,8880.4441,474985,529$ 2,04001,414088,73090,1440.4439,400$942,30343,226$ 2,04101,533097,79099,3230.4242,1471,027,676$ 2,04101,456092,90094,3570.4240,040$982,34245,334$ 2,04201,5790102,386103,9650.4142,8321,070,508$ 2,04201,500097,26798,7670.4140,691$1,023,03347,475$ Totals:$0$31,877$0$1,755,758$1,787,635$1,070,508=30-year LCCTotals:$6,050$30,283$0$1,667,970$1,704,303$1,023,033=30-year LCCwith No ChangeImprovement Cost
Energy Audit Report
April 16, 2012
pg. 47
ECM #4 Calculations
Incoming Water Temperature 40
System 1 - Location Served:
Fuel Type AFUE Thermostat
Setpoint
Full Load KW
(Electric Only)
Mo/Yr Operation
(Electric Only)Cost
Existing Natural Gas 80.00%120.0 N/A
Proposed 100.00%120.0 $36,500.00
Domestic Water Heating Data
Gallons Hot
Water/yr
845,738
845,738
Description
of Retrofit
Accent Refrigeration Proposal - Install three 120 gallon double walled heat reclaim
tanks to provide up to 300,000 BTU/h of hot water pre-heat for Zamboni water
Existing Proposed
$0.00 $0.00
N/A $6,373.39
$0.00
Therms required for Domestic Hot Water
over 1 year
Estimated Yearly Savings
Domestic Water Heating System Summary
Average AFUE of Domestic Hot Water
Systems; proportional
120
Estimated Demand Charges (electric)
80.00%100.00%
$0.90 $0.00
120
7,045.00 5,636.00
Average Cost Per Therm of Heating Fuels;
proportional
Average Thermostat Setpoint; proportional
Estimated Cost over 1 year $6,373.39
Estimated Cost of Replacements $36,500.00
Gallons of Hot Water Produced per year 845,738
Incoming Water Temp 40
Thermostat Temp 120
Appliance AFUE 80%
Therm to Gallon Generator
Therms use per year 7045
Energy Audit Report
April 16, 2012
pg. 48
---------------------A N N U A L R E A L C A S H F L O W S C U R R E N T----------------------------------------------------------------------------------A N N U A L R E A L C A S H F L O W S P R O P O S E D----------------------------- (Begin)First &AnnualAnnualAnnualTotalPresentPresentPresent(Begin)First &AnnualAnnualAnnualTotalPresentPresentPresentPresent Value of YearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofYearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofCumulative CostsCostsCostsCostsCostsFactorAnnualCumulativeCostsCostsCostsCostsCostsFactorAnnualCumulativeSavings2,012$06,373$ $0$6,373(1+i)^-nCostsCosts2,012$36,500$365-$ $0$365(1+i)^-nCostsCosts2,012$0------$01.00$0-$ 2,012$36,500------$36,5001.00$36,500$36,5002,01306,45606,4560.976,2686,268.20$ 2,0130376003760.97365$36,865(30,597)$ 2,014006,54006,5400.946,16512,433$ 2,0140387003870.97376$37,241(24,808)$ 2,015006,62506,6250.926,06318,496$ 2,0150399003990.97387$37,628(19,132)$ 2,016006,71106,7110.895,96324,459$ 2,0160411004110.97399$38,027(13,568)$ 2,017007,14807,1480.866,16630,624$ 2,0170423004230.97411$38,438(7,813)$ 2,018007,61207,6120.846,37536,999$ 2,0180436004360.97423$38,861(1,861)$ 2,019008,10708,1070.816,59243,591$ 2,0190449004490.97436$39,2974,294$ 2,020008,63408,6340.796,81650,407$ 2,0200462004620.97449$39,74610,661$ 2,021009,19509,1950.777,04757,454$ 2,0210476004760.97462$40,20817,246$ 2,022009,79309,7930.747,28764,741$ 2,0220491004910.97476$40,68424,057$ 2,0230010,429010,4290.727,53472,275$ 2,0230505005050.97491$41,17531,100$ 2,0240011,107011,1070.707,79080,066$ 2,0240520005200.97505$41,68038,386$ 2,0250011,829011,8290.688,05588,121$ 2,0250536005360.97520$42,20045,920$ 2,0260012,598012,5980.668,32996,450$ 2,0260552005520.97536$42,73753,713$ 2,0270013,896013,8960.648,919105,369$ 2,0270569005690.97552$43,28962,080$ 2,0280015,327015,3270.629,551114,920$ 2,0280586005860.97569$43,85771,063$ 2,0290016,906016,9060.6110,228125,148$ 2,0290603006030.97586$44,44380,705$ 2,0300018,647018,6470.5910,953136,101$ 2,0300621006210.97603$45,04691,055$ 2,0310020,568020,5680.5711,729147,831$ 2,0310640006400.97621$45,668102,163$ 2,0320022,686022,6860.5512,561160,391$ 2,0320659006590.97640$46,308114,084$ 2,0330025,023025,0230.5413,451173,842$ 2,0330679006790.97659$46,967126,875$ 2,0340027,600027,6000.5214,404188,246$ 2,0340699006990.97679$47,646140,600$ 2,0350030,443030,4430.5115,425203,671$ 2,0350720007200.97699$48,345155,326$ 2,0360033,578033,5780.4916,518220,190$ 2,0360742007420.97720$49,066171,124$ 2,0370037,037037,0370.4817,689237,879$ 2,0370764007640.97742$49,808188,071$ 2,0380040,852040,8520.4618,943256,822$ 2,0380787007870.97764$50,572206,250$ 2,0390045,059045,0590.4520,285277,107$ 2,0390811008110.97787$51,359225,748$ 2,0400049,701049,7010.4421,723298,830$ 2,0400835008350.97811$52,170246,660$ 2,0410054,820054,8200.4223,263322,092$ 2,0410860008600.97835$53,005269,088$ 2,0420060,466060,4660.4124,911347,004$ 2,0420886008860.97860$53,865293,139$ Totals:$0$0$635,392$0$635,392$347,004=30-year LCCTotals:$36,500$17,886$0$0$54,386$53,865=30-year LCC
Energy Audit Report
April 16, 2012
pg. 49
ECM #5 Calculations
Horsepower Motor
Loading
Efficiency KW Operating
Hours/yr
Yearly KW
Demand
Yearly KW
Demand
Cost
Yearly KWH
Consumption
Yearly KWH
Cost
Totals
Existing 20 70 91 11.48 2520 137.72 $0.00 28,922 $3,470.62 $3,470.62
Proposed 20 40 91 6.56 2520 78.70 $0.00 16,527 $1,983.21 $1,983.21
Savings 59.02 $0.00 12,395 $1,487.41 $1,487.41
Installed Cost $9,000.00
Payback (years)6.05
Description of Improvement
Motor #3
Accent Refrigeration - Install VFD programmed through the computer system to select the right speed based on glycol temperature, ice temperature,
suction temperature and TD to provide the highest COP for a given condition.
Energy Audit Report
April 16, 2012
pg. 50
---------------------A N N U A L R E A L C A S H F L O W S C U R R E N T----------------------------------------------------------------------------------A N N U A L R E A L C A S H F L O W S P R O P O S E D------------------------------- (Begin)First &AnnualAnnualAnnualTotalPresentPresentPresent(Begin)First &AnnualAnnualAnnualTotalPresentPresentPresentPresent Value of YearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofYearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofCumulative CostsCostsCostsCostsCostsFactorAnnualCumulativeCostsCostsCostsCostsCostsFactorAnnualCumulativeSavings2,012$69-$ $3,471$3,540(1+i)^-nCostsCosts2,012$9,000$40-$ $1,983$2,023(1+i)^-nCostsCosts2,012$0------$01.00$0-$ 2,012$9,000------$9,0001.00$9,000$9,0002,01307103,5643,6360.973,5303,529.93$ 2,01304102,0372,0780.972,017$11,017(7,487)$ 2,01407403,6613,7340.943,5207,050$ 2,01404202,0922,1340.942,011$13,028(5,979)$ 2,01507603,7593,8350.923,51010,560$ 2,01504302,1482,1920.922,006$15,034(4,474)$ 2,01607803,8613,9390.893,50014,059$ 2,01604502,2062,2510.892,000$17,034(2,975)$ 2,01708003,9814,0610.863,50317,562$ 2,01704602,2752,3210.862,002$19,036(1,473)$ 2,01808304,1044,1870.843,50621,069$ 2,01804702,3452,3920.842,004$21,03930$ 2,01908504,2314,3170.813,51024,579$ 2,01904902,4182,4670.812,006$23,0451,534$ 2,02008804,3624,4500.793,51328,092$ 2,02005002,4932,5430.792,007$25,0523,039$ 2,02109104,4984,5880.773,51631,608$ 2,02105202,5702,6220.772,009$27,0624,546$ 2,02209304,6374,7300.743,52035,128$ 2,02205302,6502,7030.742,011$29,0736,055$ 2,02309604,7814,8770.723,52338,651$ 2,02305502,7322,7870.722,013$31,0867,565$ 2,02409904,9295,0280.703,52742,178$ 2,02405702,8172,8730.702,015$33,1029,076$ 2,025010205,0825,1840.683,53045,708$ 2,02505802,9042,9620.682,017$35,11910,589$ 2,026010505,2395,3440.663,53349,241$ 2,02606002,9943,0540.662,019$37,13812,103$ 2,027010805,4865,5940.643,59052,831$ 2,02706203,1353,1960.642,052$39,18913,642$ 2,028011105,7435,8550.623,64956,480$ 2,02806403,2823,3460.622,085$41,27415,206$ 2,029011506,0136,1280.613,70860,187$ 2,02906603,4363,5020.612,119$43,39316,795$ 2,030011806,2966,4140.593,76863,955$ 2,03006803,5983,6650.592,153$45,54618,409$ 2,031012206,5926,7140.573,82967,784$ 2,03107003,7673,8360.572,188$47,73320,050$ 2,032012506,9027,0270.553,89171,674$ 2,03207203,9444,0150.552,223$49,95721,718$ 2,033012907,2267,3550.543,95475,628$ 2,03307404,1294,2030.542,259$52,21623,412$ 2,034013307,5667,6990.524,01879,646$ 2,03407604,3234,3990.522,296$54,51225,134$ 2,035013707,9218,0580.514,08383,729$ 2,03507804,5264,6050.512,333$56,84526,884$ 2,036014108,2948,4350.494,14987,878$ 2,03608104,7394,8200.492,371$59,21628,662$ 2,037014508,6838,8290.484,21792,095$ 2,03708304,9625,0450.482,410$61,62630,469$ 2,038015009,0929,2410.464,28596,380$ 2,03808605,1955,2810.462,449$64,07432,306$ 2,039015409,5199,6730.454,355100,735$ 2,03908805,4395,5270.452,488$66,56334,172$ 2,040015909,96610,1250.444,425105,160$ 2,04009105,6955,7860.442,529$69,09236,069$ 2,0410164010,43510,5980.424,497109,657$ 2,04109305,9636,0560.422,570$71,66137,996$ 2,0420168010,92511,0940.414,570114,228$ 2,04209606,2436,3390.412,612$74,27339,955$ Totals:$0$3,401$0$187,347$190,748$114,228=30-year LCCTotals:$9,000$1,944$0$107,055$117,999$74,273=30-year LCCwith No ChangeImprovement Cost
Energy Audit Report
April 16, 2012
pg. 51
ECM #6 Calculations
Space Description
Number of Fixtures 233 233
Lamps per Fixture 1 1
Lamp Type 4' T8 4' T8
Fixture Wattage 32 25
Hours on per Week 58 58
Cost of New Lamp $17.38
Cost of New Fixture
Total KWH Cost $2,698.48 $2,108.18
Total Demand Cost $0.00 $0.00
Total Yearly Cost $2,698.48 $2,108.18
Yearly Savings $590.29
Total Retrofit Cost $4,049.54
Payback Period 6.9 years
T8 fixtures throughout.
Retrofit Description Replace existing lamps in T8 fixtures with 25w lamps.
Energy Audit Report
April 16, 2012
pg. 52
---------------------A N N U A L R E A L C A S H F L O W S C U R R E N T----------------------------------------------------------------------------------A N N U A L R E A L C A S H F L O W S P R O P O S E D----------------------------- (Begin)First &AnnualAnnualAnnualTotalPresentPresentPresent(Begin)First &AnnualAnnualAnnualTotalPresentPresentPresentPresent Value of YearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofYearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofCumulative CostsCostsCostsCostsCostsFactorAnnualCumulativeCostsCostsCostsCostsCostsFactorAnnualCumulativeSavings2,012$54-$ $2,698$2,752(1+i)^-nCostsCosts2,012$4,050$42-$ $2,108$2,150(1+i)^-nCostsCosts2,012$0------$01.00$0-$ 2,012$4,050------$4,0501.00$4,050$4,0502,01305602,7712,8270.972,7452,744.59$ 2,01304302,1652,2090.972,144$6,194(3,449)$ 2,01405702,8462,9030.942,7375,481$ 2,01404502,2242,2680.942,138$8,332(2,850)$ 2,01505902,9232,9820.922,7298,210$ 2,01504602,2842,3300.922,132$10,464(2,254)$ 2,01606103,0023,0630.892,72110,931$ 2,01604702,3452,3930.892,126$12,590(1,658)$ 2,01706303,0953,1580.862,72413,655$ 2,01704902,4182,4670.862,128$14,718(1,062)$ 2,01806403,1913,2550.842,72616,381$ 2,01805002,4932,5430.842,130$16,848(466)$ 2,01906603,2903,3560.812,72919,110$ 2,01905202,5702,6220.812,132$18,980131$ 2,02006803,3923,4600.792,73221,842$ 2,02005302,6502,7030.792,134$21,114728$ 2,02107003,4973,5670.772,73424,576$ 2,02105502,7322,7870.772,136$23,2501,326$ 2,02207303,6053,6780.742,73727,313$ 2,02205702,8172,8730.742,138$25,3881,925$ 2,02307503,7173,7920.722,73930,052$ 2,02305802,9042,9620.722,140$27,5282,524$ 2,02407703,8323,9090.702,74232,794$ 2,02406002,9943,0540.702,142$29,6703,124$ 2,02507903,9514,0300.682,74535,539$ 2,02506203,0873,1490.682,144$31,8143,725$ 2,02608204,0744,1550.662,74738,286$ 2,02606403,1833,2460.662,146$33,9604,325$ 2,02708404,2654,3490.642,79241,077$ 2,02706603,3323,3980.642,181$36,1414,936$ 2,02808704,4664,5520.622,83743,914$ 2,02806803,4893,5560.622,216$38,3575,557$ 2,02908904,6754,7650.612,88346,797$ 2,02907003,6533,7220.612,252$40,6106,187$ 2,03009204,8954,9870.592,92949,726$ 2,03007203,8243,8960.592,289$42,8986,828$ 2,03109505,1255,2200.572,97752,703$ 2,03107404,0044,0780.572,326$45,2247,479$ 2,03209705,3665,4640.553,02555,728$ 2,03207604,1924,2680.552,363$47,5878,141$ 2,033010005,6185,7190.543,07458,802$ 2,03307804,3894,4680.542,402$49,9898,813$ 2,034010305,8825,9860.523,12461,926$ 2,03408104,5964,6760.522,441$52,4299,497$ 2,035010706,1596,2650.513,17565,101$ 2,03508304,8124,8950.512,480$54,91010,191$ 2,036011006,4486,5580.493,22668,327$ 2,03608605,0385,1240.492,520$57,43010,897$ 2,037011306,7526,8650.483,27971,606$ 2,03708805,2755,3630.482,561$59,99111,614$ 2,038011607,0697,1850.463,33274,937$ 2,03809105,5235,6130.462,603$62,59412,343$ 2,039012007,4017,5210.453,38678,323$ 2,03909405,7825,8760.452,645$65,24013,084$ 2,040012307,7497,8720.443,44181,764$ 2,04009606,0546,1500.442,688$67,92813,836$ 2,041012708,1138,2400.423,49785,261$ 2,04109906,3386,4380.422,732$70,66014,601$ 2,042013108,4948,6250.413,55488,814$ 2,042010206,6366,7390.412,776$73,43615,379$ Totals:$0$2,645$0$145,666$148,311$88,814=30-year LCCTotals:$4,050$2,066$0$113,801$119,917$73,436=30-year LCC
Energy Audit Report
April 16, 2012
pg. 53
ECM #7 Calculations
Space Description
Number of Fixtures 49 49
Lamps per Fixture 1 1
Lamp Type MH T5
Fixture Wattage 446.2 348.1
Hours on per Week 58 58
Cost of New Lamp
Cost of New Fixture $573.21
Total KWH Cost $7,912.95 $6,173.23
Total Demand Cost $0.00 $0.00
Total Yearly Cost $7,912.95 $6,173.23
Yearly Savings $1,739.71
Total Retrofit Cost $28,087.29
Payback Period 16.1 years
Replace existing metal halide lights with T5 Hi Bay lights with 54w
lamps and electronic ballasts.
Metal Halide Lights Over Ice
Retrofit Description
Energy Audit Report
April 16, 2012
pg. 54
---------------------A N N U A L R E A L C A S H F L O W S C U R R E N T----------------------------------------------------------------------------------A N N U A L R E A L C A S H F L O W S P R O P O S E D----------------------------- (Begin)First &AnnualAnnualAnnualTotalPresentPresentPresent(Begin)First &AnnualAnnualAnnualTotalPresentPresentPresentPresent Value of YearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofYearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofCumulative CostsCostsCostsCostsCostsFactorAnnualCumulativeCostsCostsCostsCostsCostsFactorAnnualCumulativeSavings2,012$158-$ $7,913$8,071(1+i)^-nCostsCosts2,012$28,087$123-$ $6,173$6,297(1+i)^-nCostsCosts2,012$0------$01.00$0-$ 2,012$28,087------$28,0871.00$28,087$28,0872,013016308,1278,2900.978,0488,048.16$ 2,013012706,3406,4670.976,279$34,366(26,318)$ 2,014016808,3468,5140.948,02516,073$ 2,014013106,5116,6420.946,261$40,627(24,553)$ 2,015017308,5718,7440.928,00224,076$ 2,015013506,6876,8220.926,243$46,870(22,794)$ 2,016017808,8038,9810.897,97932,055$ 2,016013906,8677,0060.896,225$53,095(21,040)$ 2,017018309,0769,2590.867,98740,042$ 2,017014307,0807,2230.866,231$59,326(19,284)$ 2,018018909,3579,5460.847,99548,037$ 2,018014707,3007,4470.846,237$65,563(17,526)$ 2,019019509,6479,8420.818,00256,039$ 2,019015207,5267,6780.816,243$71,806(15,767)$ 2,020020009,94610,1470.798,01064,049$ 2,020015607,7597,9160.796,249$78,054(14,006)$ 2,0210206010,25410,4610.778,01772,066$ 2,021016108,0008,1610.776,255$84,309(12,243)$ 2,0220213010,57210,7850.748,02580,091$ 2,022016608,2488,4140.746,261$90,570(10,479)$ 2,0230219010,90011,1190.728,03388,124$ 2,023017108,5048,6750.726,267$96,837(8,713)$ 2,0240226011,23811,4640.708,04096,164$ 2,024017608,7678,9430.706,273$103,109(6,945)$ 2,0250232011,58611,8190.688,048104,212$ 2,025018109,0399,2200.686,279$109,388(5,176)$ 2,0260239011,94612,1850.668,056112,268$ 2,026018709,3199,5060.666,285$115,672(3,404)$ 2,0270247012,50712,7540.648,186120,454$ 2,027019209,7579,9500.646,386$122,059(1,605)$ 2,0280254013,09513,3490.628,319128,773$ 2,0280198010,21610,4140.626,490$128,548224$ 2,0290262013,71013,9720.618,453137,226$ 2,0290204010,69610,9000.616,595$135,1432,083$ 2,0300269014,35514,6240.598,590145,816$ 2,0300210011,19911,4090.596,702$141,8453,971$ 2,0310278015,02915,3070.578,729154,545$ 2,0310216011,72511,9420.576,810$148,6555,890$ 2,0320286015,73616,0220.558,871163,416$ 2,0320223012,27612,4990.556,920$155,5757,841$ 2,0330294016,47516,7700.549,015172,431$ 2,0330230012,85313,0830.547,033$162,6089,823$ 2,0340303017,25017,5530.529,161181,591$ 2,0340237013,45713,6940.527,147$169,75411,837$ 2,0350312018,06018,3730.519,309190,901$ 2,0350244014,09014,3330.517,263$177,01713,883$ 2,0360322018,90919,2310.499,460200,361$ 2,0360251014,75215,0030.497,380$184,39815,963$ 2,0370331019,79820,1290.489,614209,975$ 2,0370259015,44515,7040.487,500$191,89818,077$ 2,0380341020,72821,0700.469,770219,745$ 2,0380266016,17116,4370.467,622$199,52020,225$ 2,0390352021,70322,0540.459,929229,673$ 2,0390274016,93117,2050.457,746$207,26522,408$ 2,0400362022,72323,0850.4410,090239,763$ 2,0400282017,72718,0090.447,872$215,13724,626$ 2,0410373023,79124,1640.4210,254250,017$ 2,0410291018,56018,8510.427,999$223,13626,881$ 2,0420384024,90925,2930.4110,420260,437$ 2,0420300019,43219,7320.418,129$231,26629,172$ Totals:$0$7,755$0$427,147$434,902$260,437=30-year LCCTotals:$28,087$6,050$0$333,236$367,374$231,266=30-year LCC
Energy Audit Report
April 16, 2012
pg. 55
ECM #8 Calculations
System 1 - Location Served:
Fuel Type AFUE Thermostat
Setpoint
Full Load KW
(Electric Only)
Mo/Yr Operation
(Electric Only)Cost
Existing Natural Gas 81.00%70.0 N/A
Proposed Natural Gas 95.00%70.0 $54,272.59
Heating Data
100
Volume Served
100
Description
of Retrofit
Boiler
Replace existing (2) existing Weil McLain Boilers and (3) AO Smith water heaters with
(2) 95% AFUE Boilers.
$11,186.88
Average AFUE of All Heating Systems,
proportional to volume 81.00%
Heating System Summary
$0.90
70
$0.00
95.00%
$0.90
70
Average Cost Per Therm of Heating Fuels,
proportional to volume
Average Thermostat Setpoint, proportional
to volume
Therms required to heat the building over
1 year
Estimated Cost over 1 year
$54,272.59Estimated Cost of Heating System
Replacements
New Heating SystemsExisting Heating Systems
14503 12,365.72
Estimated Demand Charges (electric)
Estimated Savings per Year
$0.00
$13,120.42
$1,933.54
Energy Audit Report
April 16, 2012
pg. 56
---------------------A N N U A L R E A L C A S H F L O W S C U R R E N T----------------------------------------------------------------------------------A N N U A L R E A L C A S H F L O W S P R O P O S E D----------------------------- (Begin)First &AnnualAnnualAnnualTotalPresentPresentPresent(Begin)First &AnnualAnnualAnnualTotalPresentPresentPresentPresent Value of YearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofYearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofCumulative CostsCostsCostsCostsCostsFactorAnnualCumulativeCostsCostsCostsCostsCostsFactorAnnualCumulativeSavings2,012$26213,120$ $0$13,383(1+i)^-nCostsCosts2,012$54,273$22411,187$ $0$11,411(1+i)^-nCostsCosts2,012$0------$01.00$0-$ 2,012$54,273------$54,2731.00$54,273$54,2732,01327013,291013,5610.9713,16613,166.28$ 2,013023011,332011,5630.9711,226$65,499(52,332)$ 2,014027813,464013,7420.9412,95326,120$ 2,014023711,480011,7170.9411,044$76,543(50,423)$ 2,015028713,639013,9260.9212,74438,863$ 2,015024411,629011,8730.9210,866$87,409(48,545)$ 2,016029513,816014,1110.8912,53851,401$ 2,016025211,780012,0320.8910,690$98,099(46,698)$ 2,017030414,714015,0180.8612,95564,356$ 2,017025912,546012,8050.8611,046$109,145(44,789)$ 2,018031315,671015,9840.8413,38677,742$ 2,018026713,361013,6280.8411,414$120,558(42,816)$ 2,019032316,689017,0120.8113,83291,575$ 2,019027514,230014,5050.8111,794$132,352(40,777)$ 2,020033217,774018,1060.7914,293105,868$ 2,020028315,155015,4380.7912,187$144,539(38,671)$ 2,021034218,929019,2720.7714,770120,638$ 2,021029216,140016,4320.7712,593$157,132(36,494)$ 2,022035320,160020,5120.7415,263135,901$ 2,022030117,189017,4890.7413,014$170,146(34,245)$ 2,023036321,470021,8330.7215,773151,674$ 2,023031018,306018,6160.7213,448$183,595(31,921)$ 2,024037422,866023,2400.7016,300167,974$ 2,024031919,496019,8150.7013,898$197,492(29,519)$ 2,025038524,352024,7370.6816,845184,819$ 2,025032920,763021,0920.6814,362$211,855(27,036)$ 2,026039725,935026,3320.6617,408202,227$ 2,026033822,113022,4510.6614,843$226,698(24,471)$ 2,027040928,606029,0150.6418,624220,851$ 2,027034924,390024,7390.6415,879$242,577(21,726)$ 2,028042131,552031,9740.6219,925240,775$ 2,028035926,903027,2620.6216,989$259,565(18,790)$ 2,029043434,802035,2360.6121,318262,094$ 2,029037029,674030,0430.6118,177$277,742(15,648)$ 2,030044738,387038,8340.5922,811284,904$ 2,030038132,730033,1110.5919,449$297,191(12,287)$ 2,031046042,341042,8010.5724,409309,313$ 2,031039236,101036,4930.5720,812$318,003(8,690)$ 2,032047446,702047,1760.5526,120335,433$ 2,032040439,820040,2240.5522,271$340,274(4,840)$ 2,033048851,512052,0000.5427,953363,386$ 2,033041643,921044,3370.5423,833$364,107(721)$ 2,034050356,818057,3210.5229,915393,301$ 2,034042948,445048,8730.5225,507$389,6143,688$ 2,035051862,670063,1880.5132,017425,318$ 2,035044253,435053,8760.5127,299$416,9128,406$ 2,036053369,125069,6590.4934,267459,586$ 2,036045558,938059,3930.4929,218$446,13013,456$ 2,037054976,245076,7950.4836,678496,263$ 2,037046865,009065,4770.4831,272$477,40218,861$ 2,038056684,098084,6640.4639,258535,522$ 2,038048371,705072,1870.4633,473$510,87524,646$ 2,039058392,761093,3430.4542,022577,544$ 2,039049779,091079,5880.4535,829$546,70530,839$ 2,0400600102,3150102,9150.4444,982622,526$ 2,040051287,237087,7490.4438,353$585,05837,468$ 2,0410618112,8530113,4720.4248,151670,677$ 2,041052796,222096,7500.4241,055$626,11344,564$ 2,0420637124,4770125,1140.4151,545722,222$ 2,0420543106,1330106,6760.4143,949$670,06252,160$ Totals:$0$12,859$1,308,034$0$1,320,893$722,222=30-year LCCTotals:$54,273$10,964$1,115,271$0$1,180,507$670,062=30-year LCC
Energy Audit Report
April 16, 2012
pg. 57
ECM #9 Calculations
Space Description
Number of Fixtures 12 12
Lamps per Fixture 2 2
Lamp Type T12 T8
Fixture Wattage 97.8 45.5
Hours on per Week 29 29
Cost of New Lamp
Cost of New Fixture $271.22
Total KWH Cost $212.37 $98.80
Total Demand Cost $0.00 $0.00
Total Yearly Cost $212.37 $98.80
Yearly Savings $113.57
Total Retrofit Cost $3,254.64
Payback Period 28.7 years
Locker Room 2 and 3
Replace existing T12 fixtures with T8 fixtures and 25w lamps.Retrofit Description
Energy Audit Report
April 16, 2012
pg. 58
---------------------A N N U A L R E A L C A S H F L O W S C U R R E N T----------------------------------------------------------------------------------A N N U A L R E A L C A S H F L O W S P R O P O S E D----------------------------- (Begin)First &AnnualAnnualAnnualTotalPresentPresentPresent(Begin)First &AnnualAnnualAnnualTotalPresentPresentPresentPresent Value of YearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofYearReplace.Maint.Nat.GasElectricAnnualWorthWorth ofWorth ofCumulative CostsCostsCostsCostsCostsFactorAnnualCumulativeCostsCostsCostsCostsCostsFactorAnnualCumulativeSavings2,012$4-$ $212$217(1+i)^-nCostsCosts2,012$3,255$2-$ $99$101(1+i)^-nCostsCosts2,012$0------$01.00$0-$ 2,012$3,255------$3,2551.00$3,255$3,2552,0130402182220.97216216.00$ 2,0130201011040.97100$3,355(3,139)$ 2,0140502242290.94215431$ 2,0140201041060.94100$3,455(3,024)$ 2,0150502302350.92215646$ 2,0150201071090.92100$3,555(2,909)$ 2,0160502362410.89214860$ 2,0160201101120.89100$3,655(2,795)$ 2,0170502442490.862141,075$ 2,0170201131160.86100$3,755(2,680)$ 2,0180502512560.842151,289$ 2,0180201171190.84100$3,854(2,565)$ 2,0190502592640.812151,504$ 2,0190201201230.81100$3,954(2,450)$ 2,0200502672720.792151,719$ 2,0200301241270.79100$4,054(2,335)$ 2,0210602752810.772151,934$ 2,0210301281310.77100$4,154(2,220)$ 2,0220602842890.742152,150$ 2,0220301321350.74100$4,255(2,105)$ 2,0230602932980.722162,365$ 2,0230301361390.72100$4,355(1,990)$ 2,0240603023080.702162,581$ 2,0240301401430.70100$4,455(1,874)$ 2,0250603113170.682162,797$ 2,0250301451480.68100$4,556(1,759)$ 2,0260603213270.662163,013$ 2,0260301491520.66101$4,656(1,643)$ 2,0270703363420.642203,233$ 2,0270301561590.64102$4,759(1,526)$ 2,0280703513580.622233,456$ 2,0280301641670.62104$4,863(1,406)$ 2,0290703683750.612273,683$ 2,0290301711740.61106$4,968(1,285)$ 2,0300703853920.592313,914$ 2,0300301791830.59107$5,075(1,162)$ 2,0310704034110.572344,148$ 2,0310301881910.57109$5,184(1,037)$ 2,0320804224300.552384,386$ 2,0320401962000.55111$5,295(909)$ 2,0330804424500.542424,628$ 2,0330402062090.54113$5,408(780)$ 2,0340804634710.522464,874$ 2,0340402152190.52114$5,522(648)$ 2,0350804854930.512505,124$ 2,0350402262290.51116$5,638(515)$ 2,0360905085160.492545,377$ 2,0360402362400.49118$5,756(379)$ 2,0370905315400.482585,635$ 2,0370402472510.48120$5,876(241)$ 2,0380905565650.462625,898$ 2,0380402592630.46122$5,998(101)$ 2,0390905825920.452666,164$ 2,0390402712750.45124$6,12242$ 2,04001006106200.442716,435$ 2,0400502842880.44126$6,248187$ 2,04101006396490.422756,710$ 2,0410502973020.42128$6,376334$ 2,04201006696790.412806,990$ 2,0420503113160.41130$6,507483$ Totals:$0$208$0$11,464$11,672$6,990=30-year LCCTotals:$3,255$97$0$5,334$8,685$6,507=30-year LCC
Energy Audit Report
April 16, 2012
pg. 59
Compressor Logs
date
Outdoor
Temp
Ice
Temp C2 Process C2 Suction
C2
Discharge C2 Oil Temp C2 Run Hours C1 Process C1 Suction
C1
Discharge C1 Oil Temp
C1 Run
Hours
10/24/2011 40 15 11 30 145 120 12 12 0 0 105 0
10/25/2011 37 15 13 30 145 116 22 13 0 0 102 0
10/26/2011 36 16 12 30 143 116 19 11 0 0 106 0
10/27/2011 35 15.5 11 30 160 118 21 11 0 0 106 0
10/28/2011 31 16 12 31 166 119 21 13 0 0 108 0
10/29/2011 34 16.5 12 31 150 122 17 12 0 0 106 0
10/30/2011 28 15 11 31 165 122 22 11 0 0 110 0
10/31/2011 32 15 15 28 159 121 21 13 0 0 107 0
11/1/2011 27 16 12.5 32 162 117 21 13 0 0 107 0
11/2/2011 28 14 10.5 31 157 119.5 20 13 0 0 102 0
11/3/2011 21 16 12 31 160 119 19 13 0 0 102 0
11/4/2011 30 18 11.5 31.5 160 120 23 11.5 0 0 102 0
11/5/2011 20 15 10.5 31 162 121 21 12 0 0 109 0
11/6/2011 26 16 11.5 31.5 167 121 23 12 0 0 106 0
11/7/2011 27 15 11 31 158 121 23 12 0 0 107 0
11/8/2011 5 15 13 30 147 118 18 14 0 0 104 0
11/9/2011 14 15 10 29 150 121 20 11 0 0 107 0
11/10/2011 18 15 9.5 29 151 121 20 10.5 0 0 107 0
11/11/2011 15 15 10 30 155 119 20 10.5 0 0 102 0
11/12/2011 25 15 10 30 160 121 17 10.5 0 0 104 0
11/13/2011 16 15 10 30 156 121 24 11 0 0 109 0
AVERAGE 26.0 15.4 11.4 30.4 156.1 119.7 20.2 11.9 0.0 0.0 105.6 0.0
Palmer Ice Rink Refrigeration Log
Energy Audit Report
April 16, 2012
pg. 60
Cost Data