TECHNICAL ENERGY AUDIT REPORT · 2012. 3. 3. · The basis for any energy audit is the utility usage and cost for a known period of time. Below is a summary of the annual energy usage

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PRESENTED BY

HONEYWELL BUILDING SOLUTIONS DECEMBER 21, 2010

AMENDED 2/4/11

The Energy, Minerals and Natural Resources Department provides resource protection and renewable energy resource development services to the public and other state agencies.

Energy Conservation and Management Division

1220 South St. Francis Drive ▪ Santa Fe, New Mexico 87505 Phone: (505) 476-3310 ▪ Fax (505) 476-3322 ▪ www.CleanEnergyNM.org

Susana Martinez Governor John H. Bemis Cabinet Secretary Designate Brett F. Woods, Ph.D. Deputy Cabinet Secretary

Fernando Martinez, Division Director Energy Conservation and Management Division

Addendum No. 1 Prepared April 11, 2011

to the Melrose Municipal Schools Audit Prepared February 4, 2011 by Honeywell

PURPOSE OF ADDENDUM

1) Clarify interaction of energy conservation measures; 2) Clarify economizers.

INTERACTION OF ENERGY CONSERVATION MEASURES

Various pages in each section – since there are no energy management systems, economizers, HVAC equipment replacements, or variable frequency drives being recommended in this audit, these interactions do not apply.

ECONOMIZERS

Economizer operation recommendations on page A-2 items 7 and 8 do not apply since there are neither existing economizers nor new economizers being recommended in this audit.

Melrose Municipal Schools TEA Report

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February 1, 2011 New Mexico Energy, Minerals, and Natural Resources Department (EMNRD) 1220 S. St. Francis Drive Santa Fe, NM 87505 Ref: Regional Education Center #6 Energy Audits

This statement is to certify that the energy audits were conducted in accordance with the requirements of Task 4 of EMNRD contract No. 10-521-A073212-0302 with REC #6 and that the data presented is accurate and complete to the best of Honeywell’s knowledge. If you have any questions, please contact Chris Lauer at (505) 270-5640. Sincerely,

Rory Moran, PE Honeywell International Inc. Honeywell Building Solutions


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Table of Contents Report Tab Contents Pages 1. Overview A. Executive Summary 3

B. Contact Information 4 C. Baseline Summary 6 D. Savings and Investment Summary 7

2. Melrose Elementary, Old Gym and Commons

A. General Building and HVAC Descriptions 9 B. Annual Energy Use 10 C. Energy Benchmarking 13 D. Energy Consumption by End-use 14 E. Energy Conservation Measures 15 F. Measures Considered But Not Recommended 32 G. Conclusion and Recommendations 44

3. Melrose Middle/High School


4. Melrose VoAg Building A. General Building and HVAC Descriptions 75 B. Annual Energy Use 77 C. Energy Benchmarking 80 D. Energy Consumption by End-use 81 E. Energy Conservation Measures 82 F. Measures Considered But Not Recommended 95 G. Conclusion and Recommendations 103

5. Melrose Cafeteria, Music, Home Economics


6. Melrose PE Complex A. General Building and HVAC Descriptions 135 B. Annual Energy Use 137 C. Energy Benchmarking 140 D. Energy Consumption by End-use 141 E. Energy Conservation Measures 142 F. Measures Considered But Not Recommended 156 G. Conclusion and Recommendations 165

Appendix A. Sample Energy Policy A-1 B. Raw Energy Bill Inputs A-5 C. Lighting Maintenance Formulae A-16 D. Equipment Life Expectancy A-20


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1. OVERVIEW

A. EXECUTIVE SUMMARY This document presents a Technical Energy Audit prepared by Honeywell Building Solutions (HBS) for energy conservation measures at Melrose Elementary School, Melrose Old Gym, Melrose Student Commons, Melrose Middle/High School, Melrose Vocational Agricultural Building, Melrose Cafeteria/Music/Home Economics Building and Melrose PE Complex.. The energy audits are performed under Tasks #3 and #4 of the State of New Mexico Energy, Minerals, and Natural Resources Department (EMNDR) Contract No. 10-521-A073212-0302 for Regional Education Center #6. The purpose of this contract is to identify energy efficiency measures that can be implemented under the Energy Efficiency and Renewable Energy Bonding Act, NMSA 1978, 6-21D-1 et seq. also known as the Clean Energy Revenue Bond (CERB). For the preparation of this Technical Energy Audit, HBS conducted site surveys and reviewed design, operational, and utility information provided by Melrose Municipal School staff to determine energy use and possible energy conservation opportunities. The following energy conservation measures (ECM’s) were evaluated for each building:

Energy Conservation Measures 1 Energy policy 2 Energy management system 3 Lighting retrofit with occupancy controls 4 Economizer retrofit to RTU's 5 Weatherization 6 Computer power management 7 Destratification fans in gyms 8 Insulate domestic hot water tanks 9 Submetering 10 Variable frequency drives 11 Vending machine setback 12 Building insulation 13 Freezer/cooler monitoring/modifications

See individual school section for detailed description of energy conservation measures.

This Technical Energy Audit is based on Honeywell’s best practices and procedures established through years of energy auditing and performance contracting experience. The audit and recommended energy conservation measures represent an accurate and comprehensive report and forms a solid basis for making decisions on implementing the measures included in this report.


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B. CONTACT INFORMATION: 1. For the District

a. Jaime Widner, Superintendent Melrose Municipal Schools P.O. Box 275 Melrose, NM 88124 Tel 575-253-4269 Fax 575-253-4291

b. Clay Doucet, Maintenance Supervisor Melrose Municipal Schools P.O. Box 275 Melrose, NM 88124 Tel 575-253-4269 Fax 575-253-4291

2. For the Region a. Patti Harrelson, Director

Regional Education Center #6 1500 South Avenue K Station 9 Portales, NM 88130 Tel 575-562-4457 Fax 575-562-4460 Cell 575-607-6990

b. Jack Burch Regional Education Center #6 1500 South Avenue K Station 9 Portales, NM 88130 Tel 575-562-4455 Fax 575-562-4460

3. For Honeywell

a. Account Management 1) Chris Lauer, Account Representative

Honeywell Building Solutions 9201 San Mateo Blvd NE Albuquerque, NM 87113 Tel 505-828-5260 Cell 505-270-5640 E-Mail [email protected]

2) David Balderrama, Account Representative Honeywell Building Solutions 9201 San Mateo Blvd NE Albuquerque, NM 87113 Tel 505-839-9526 Cell 505-263-2516

mailto:[email protected]�


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E-Mail [email protected] 3) Ken Swanson, Sales Manager

3509 3518 Duranzo Avenue El Paso, TX 79905 Tel 915-351-3001 Cell 915-449-1373 E-Mail [email protected]

b. Engineering 1) William Korol, Senior Energy Analyst

Honeywell Building Solutions 2925 E. Patrick Lane, Suite F Las Vegas, NV 89120 Tel 702-895-6234 Cell 702-290-2038 E-Mail [email protected]

2) Rory Moran, P.E., CEM, Performance Contracting Engineer Honeywell Building Solutions 4412 Sweetbriar Court Concord, CA 94521 Tel 415-639-0620 Cell 650-245-9221 E-Mail [email protected]

3) Rick Otta, P.E., CEM, LEED 2.0 AP, Performance Contracting Engineer Principal Honeywell Building Solutions 2700 Richards Road, Suite 102 Bellevue, WA 98005 Tel 425-698-6096 Cell 206-409-6823 E-Mail [email protected]

mailto:[email protected]�mailto:[email protected]�mailto:[email protected]�mailto:[email protected]�mailto:[email protected]�


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C. BASELINE SUMMARY The basis for any energy audit is the utility usage and cost for a known period of time. Below is a summary of the annual energy usage for each building in the District. Two years of utilities bills were analyzed, a base year chosen, and the data normalized. The fossil fuel used at Melrose Municipal Schools is natural gas supplied by Eastern New Mexico Natural Gas Company and the electricity is supplied by Farmer’s Electric Cooperative, Inc.

Table 2: Summary of Annual Energy Use and Costs by Fuel Type for Base Year (June 2009 - May 2010)

Building

Acronym

Area Square

Feet

Electric Energy

kWh

Electric Demand

kW

Fossil Fuel

MMBTU

Total Electrical

Cost

Total Fossil

Fuel Cost

Total Energy

Cost

Cost per

Square Foot

Notes Melrose Elem/Old Gym/ Commons MEGC 36,640 156,001 646 1,411 $16,829 $11,530 $28,359 $0.77 A Melrose Middle/High School MMH 16,000 104,001 430 334 $11,219 $2,846 $14,065 $0.88 A Melrose VoAg Building MVA 12,887 30,698 238 364 $2,509 $3,144 $5,653 $0.44 Melrose Cafeteria/Music/ Home Economics MCMH 14,000 103,151 556 543 $12,954 $4,438 $17,391 $1.24 Melrose PE Complex MPE 25,500 203,327 804 364 $21,684 $3,144 $24,828 $0.97 B

TOTALS

105,027 597,177 2,674 3,015 $65,195 $25,102 $90,296 $0.86 Notes: A. One common meter serves both the Elem/Old Gym/Commons and the Middle/High School B. PE Complex electric meter also serves the Bus Barn


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D. SAVINGS AND INVESTMENT SUMMARY Each school building was examined in detail for energy savings potential, energy reductions were calculated, cost to implement the

measures determined, and operations and maintenance effects examined. The simple pay back period (SPBP) is the total investment

divided by the first year savings. The SPBP may be used to rate the cost effectiveness of performing energy conservation measures. The

table below summarizes all the recommended energy conservation measures by building. See the individual building reports for details.

Table 3: Total Energy Cost Savings and Investment Summary

Natural Gas Natural Gas Electric Electric O&M Total Rebates Total Simple

$ MMBTU $ kWh $ $ $ PaybackID School Savings Savings Savings Savings Savings Savings Investment Years

MEGC Melrose Elem/Old Gym/ Commons $686 83.9 $4,994 51,375 $243 $5,922 $0 $65,351 11.0

MMH Melrose Middle/High School $479 56.2 $2,491 23,907 $58 $3,028 $0 $26,127 8.6

MVA Melrose VoAg Building $366 40.2 $1,060 12,926 $123 $1,550 $0 $16,198 10.5

MCMH Melrose Cafeteria/Music/ Home Ec $320 36.4 $2,647 24,438 $57 $3,024 $0 $24,667 8.2

MPE Melrose PE Complex $456 52.7 $6,520 70,123 $797 $7,773 $0 $65,841 8.5

Totals: $2,306 269 $17,712 182,769 $1,278 $21,296 $0 $198,184 9.3

Base Proposed Proposed Percent Proposed

Year $ Energy Energy Energy

Cost Savings Savings Reduction Cost

Electric Utility $65,195 $17,712 182,769 27.2% $47,483

Natural Gas Utility $25,102 $2,306 269 9.2% $22,796

Total Combined Utility $90,297 $20,018 22.2% $70,279

Savings and Investment Summary for Recommended Project:

Melrose Municipal Schools


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2. MELROSE ELEM/OLD GYM/COMMONS

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Gym

/Com

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SECTION CONTENTS:

• GENERAL BUILDING & HVAC SYSTEM DESCRIPTIONS

• ANNUAL ENERGY USE

• ENERGY BENCHMARKING

• ENERGY CONSUMPTION BY END-USE

• ENERGY CONSERVATION MEASURES

• MEASURES CONSIDERED BUT NOT RECOMMENDED

• CONCLUSIONS AND RECOMMENDATIONS

A. GENERAL BUILDING AND HVAC DESCRIPTIONS Building: Melrose main campus is a collection of different buildings and additions. The original building consists of what is now part of the elementary wing and was built in 1924, with additions built between 1954 through 1995. For this analysis the elementary wing, old gym, and student commons are grouped together because they are all served by a common natural gas meter. The elementary wing is a single story masonry building with eleven classrooms, library, a computer lab, restrooms, an administration area and several smaller classrooms. The old gym was built in 1954 and includes a gymnasium, stage, locker rooms, restrooms, and a small office. The student commons links the high school wing, elementary wing and old gym. The building is approximately 36,640 square feet. Heating/Cooling/Ventilation System: The building is heated and cooled by Carrier/Trane packaged rooftop air handling units with indirect fired gas furnaces and direct expansion cooling. Most of the units have fixed outside air intakes with no dampers. Each unit is controlled by a single temperature conventional thermostat located in the space served by the unit. A timeclock located in the janitor’s closet disables all units during unoccupied periods. The timeclock turns the units on for parts of every weekend day to maintain minimum temperatures in the building. Each restroom has an electric unit heater controlled by a conventional thermostat. The restroom unit heaters are not tied into the timeclock.


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Lighting System: The predominant lighting fixtures in the Elementary School are two lamp 32 watt four foot T8 fluorescent with electronic ballasts. There are a few four lamp 32 watt four foot T8 fluorescents with electronic ballasts in one classroom and in the hallway. Two classrooms, one office and the nurse’s room still have T12 fluorescent fixtures. Exit lights are high efficiency LED fixtures. Incandescent lights are used in some of the restrooms and storage areas. Average light level in the classrooms at desk height was 82-102 foot-candles and 90 foot-candles in the Library. There are no automatic lighting controls. The Old Gym is lit by 400 watt metal halide fixtures. The majority of the lights in the restrooms, storage areas and lockers are two lamp 40 watt T12 fluorescent luminaries with magnetic ballasts. The hallways and selected fixtures in the restroom have been converted to T8 bulbs. The garage area is lit with eight foot T12 fixtures. There are no automatic lighting controls. The main building exterior lights are a combination of 400, 250 and 100 watt metal halide fixtures, 100 and 60 watt incandescent fixtures, and 100 and 50 watt high pressure sodium fixtures. There is one 65 watt compact fluorescent fixture. Building Envelope: The Main Building is constructed of masonry walls, wood roof deck and slab-on-grade concrete foundation. The concrete-block and poured concrete and foundations support masonry and concrete-block exterior walls. The wood roof deck is supported by wood roof joists. The building ceiling finishes consist of suspended fiber board. The presence of insulation in the flat roof was spot-checked at R30. The elementary building wall finishes consist of drywall. The majority of the windows in the elementary school are aluminum-framed, double-glazed units. The exceptions are single-glazed windows located on the west building wing and the windows in the old gym. On the whole, the interior finishes are in good condition.

Old Gym Single-Glazed Windows Elementary Single-Glazed Windows


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B. ANNUAL ENERGY USE Below is annual energy usage per utility broken out by enduse.


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Energy Usage Base Year Data: Energy bills were provided by Melrose Municipal Schools for two full years, starting with June 2008 and going through May 2010. These bills were normalized and a base year of June 2009 – May 2010 was selected. This is the most recent period for which utility data was available when the technical energy audit began. In general, base year data does not differ appreciably from data for the preceding year. The base year provides a basis for performing energy end use analyses a) to understand how energy is used in a given building and b) to identify savings opportunities during the early stages of the energy audit. Projected energy unit savings are compared to base year energy consumption to ensure that the projected savings are reasonable. “Whole building” energy models were developed for the sites included in the Technical Energy Audit using eQUEST version 3.64, build 7130. The eQUEST program uses “typical meteorological year” (TMY2) weather files rather than weather data files for a particular year. One of the challenges of energy bill analysis was the sharing of meters for multiple buildings. Most of the school buildings in Melrose have their own dedicated gas and electric meters with two exceptions. The main building has one electric meter that is shared for the Elementary School, Old Gym, Student Commons and the Middle/High School. The Bus Barn is fed from the same electric meter that feeds the PE Complex. All buildings were modeled in eQuest Version 3.64 and the results of this modeling allowed for the allocation of energy usage among the buildings when there are shared meters. The annual energy use index (EUI) for Melrose Elem/Old Gym/Commons is:

53,040 BTU/Square Foot. The annual energy cost per square foot for Melrose Elem/Old Gym/Commons is:

$ 0.77/Square Foot.


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Customer Name: Melrose Municipal SchoolsFacility Name: Elementary School/OldGym/Student CommonsBase Year: Jun '09 - May '10Conditioned Area: 36,640 square feetBuilding Occupants: 120 people

Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Annual

Weather DataDays in Month 30 31 31 30 31 30 31 31 28 31 30 31 365Heating Degree Days 0 0 0 11 210 490 776 735 515 426 277 58 3498Cooling Degree Days 376 333 296 92 22 0 0 0 0 0 22 95 1236

Electrical DatakW-hrs Used 13,809 11313 9723 16560 15450 12555 12828 11840 13490 14614 11273 12545 156,001Daily Ave kW-hrs 460 365 314 552 498 419 414 382 482 471 376 405 427$/kW-hr $0.088 $0.074 $0.074 $0.085 $0.083 $0.082 $0.080 $0.081 $0.080 $0.083 $0.093 $0.091 $0.083Daily kW-hr Cost $40 $27 $23 $47 $41 $34 $33 $31 $39 $39 $35 $37 $35Total kW-hr Cost $1,214 $841 $724 $1,403 $1,275 $1,025 $1,031 $963 $1,084 $1,209 $1,048 $1,138 $12,955

kW Used 74 36 30 83 72 57 50 48 49 48 48 51 646$/kW $6.00 $6.00 $6.00 $6.00 $6.00 $6.00 $6.00 $6.00 $6.00 $6.00 $6.00 $6.00 $6.00Total Demand Cost $445 $219 $180 $495 $429 $343 $301 $285 $294 $291 $288 $304 $3,874Load Factor 26% 42% 44% 28% 29% 31% 34% 33% 41% 41% 33% 33% 33%

Total Electric Cost $1,659 $1,059 $904 $1,898 $1,705 $1,368 $1,332 $1,248 $1,378 $1,500 $1,336 $1,442 $16,829Daily Electric Cost $55 $34 $29 $63 $55 $46 $43 $40 $49 $48 $45 $47 $46Cost/Square Foot $0.05 $0.03 $0.02 $0.05 $0.05 $0.04 $0.04 $0.03 $0.04 $0.04 $0.04 $0.04 $0.46

Fossil Fuel DataTherms Total 26 15 20 87 802 2,509 3,534 2,395 3,607 1,050 31 35 14,111MMBTUs Total 3 2 2 9 80 251 353 239 361 105 3 3 1,411Daily Ave MMBTUs 0 0 0 0 3 8 11 8 13 3 0 0 4$/MMBTU $0.00 $0.00 $0.00 $0.00 $0.87 $2.29 $6.23 $12.60 $5.04 $28.02 $225.60 $13.70 $8.17Daily MMBTU Cost $2 $1 $1 $1 $2 $19 $71 $97 $65 $95 $24 $2 $32Total MMBTU Cost $59 $34 $31 $31 $70 $574 $2,200 $3,017 $1,817 $2,942 $706 $47 $11,530Cost/Square Foot $0.00 $0.00 $0.00 $0.00 $0.00 $0.02 $0.06 $0.08 $0.05 $0.08 $0.02 $0.00 $0.31

Energy Usage IndicesElec BTU/Sq Ft/Day 43 34 29 51 46 39 39 36 45 44 35 38 40kW-hrs/Sq Ft/Month 0.4 0.3 0.3 0.5 0.4 0.3 0.4 0.3 0.4 0.4 0.3 0.3 0.4Proj kW-hrs/Sq Ft/Yr 4.5 3.7 3.2 5.4 5.1 4.1 4.2 3.9 4.4 4.8 3.7 4.1 4.3

Fossil Fuel BTU/Sq Ft/Day 2 1 2 8 71 228 311 211 352 92 3 3 106Fossil Fuel BTU/Sq Ft/Mnth 72 42 54 238 2,190 6,847 9,644 6,536 9,844 2,865 85 94 3,209Proj FF Btu/Sq Ft/Year 865 501 653 2,860 26,280 82,162 115,731 78,438 118,123 34,385 1,026 1,130 38,513

Total BTUs/Sq Ft/Day 45 35 31 59 117 267 350 246 396 136 38 41 145Energy Cost/Sq Ft $0.05 $0.03 $0.03 $0.05 $0.05 $0.05 $0.10 $0.12 $0.09 $0.12 $0.06 $0.04 $0.77EUI in BTUs/Sq Ft 1,358 1,095 960 1,780 3,629 8,016 10,839 7,639 11,100 4,226 1,135 1,262 53,040Year to Date Usage 1,358 2,453 3,413 5,194 8,822 16,838 27,677 35,316 46,416 50,642 51,778 53,040

Tot Energy & Demand Cost $1,718 $1,094 $935 $1,929 $1,775 $1,942 $3,532 $4,265 $3,195 $4,442 $2,043 $1,490 $28,359Year to Date Cost $1,718 $2,812 $3,747 $5,676 $7,451 $9,392 $12,924 $17,189 $20,384 $24,826 $26,869 $28,359

Base Year Utility Report for Melrose Elementary School/OldGym/Commons


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C. ENERGY BENCHMARKING Energy Benchmarking: Each building was entered in the Environmental Protection Agency’s Portfolio Manager Software to generate a benchmark for the building compared to other elementary schools throughout the United States. The facility report shows a low energy intensity rating for this building and gives it an Energy Performance Rating of 84, i.e. this building’s energy usage is lower than 84% of the existing schools in the survey database.


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D. ENERGY CONSUMPTION BY END-USE Energy Consumption by End-use: The building was modeled in eQuest Version 3.64 Building Simulation software to allocate energy usage in the building and to provide a baseline for energy savings calculations for certain energy conservation measures. The eQuest model predicted electrical energy usage 0.6% above measured use and natural gas energy at 1.7% below measured use.


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E. ENERGY CONSERVATION MEASURES SCOPE OF WORK, COST AND SAVINGS SUMMARY:

Below is a list of recommended Energy Conservation Measures. These are measures that have a simple payback of fifteen years or less. Each measure is discussed in detail with estimated energy savings and costs given.

Equipment Natural Gas Natural Gas Electric Electric O&M Total Rebates Total SimpleLife $ MMBTU $ kWh $ $ $ Payback

ECM ID ECM Name Years Savings Savings Savings Savings Savings Savings Investment Years

MEGC1 Energy policy N/A $0 0.0 $0 0 $0 $0 $0 $0 MEGC3 Lighting retrofit 16 $0 0.0 $4,662 47,380 $243 $4,905 $0 $60,551 12.3 MEGC5 Building weatherization 15 $620 75.9 $35 425 $0 $655 $0 $3,500 5.3MEGC6 Computer power management 5 $0 0.0 $296 3,570 $0 $296 $0 $850 2.9 MEGC8 Insulate domestic hot water tanks 20 $47 5.8 $0 0 $0 $47 $0 $360 7.6 MEGC12 Enable return air to Old Gym furnace 1 30 $18 2.2 $0 0 $0 $18 $0 $90 4.9

Totals: $686 84 $4,994 51,375 $243 $5,922 $0 $65,351 11.0

Base Base Total TotalYear Year $ Energy Percent

Costs Usage Savings Savings SavingsElectric Utility $16,829 156,001 $4,994 51,375 29.7%

Natural Gas Utility $11,530 1,411 $686 84 5.9%

Savings and Investment Summary for Recommended Project:Melrose Elementary School/OldGym/Commons

Commercial rebates are not currently offered by Farmer’s Electric Cooperative, Inc. or Eastern New Mexico Natural Gas Company. Energy Conservation Measure Interaction Measure interaction effects have not been calculated since the intent of this study is to identify and prioritize energy savings opportunities. If multiple energy conservation measures are implemented total energy savings could be slightly reduced due to interactive effects depending on which combination of measures are implemented. Implementing lighting retrofits will reduce the heat generated by the lighting system. During the heating season the reduced heat produced by the lights will need to be replaced by the building heating system. During the cooling season the reduced heat produced by the lights will result in reduced energy needed to cool the space. The added heating costs will be roughly negated by the reduced cooling costs.


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Building weatherization/insulation/windows energy conservation measures will reduce both heating and cooling costs. These measures will reduce the savings attributed to the heating/cooling of the building since it will reduce the base load for the building. The energy conservation measures affected by weatherization/insulation/windows include the energy management system, economizer retrofits, as well as the heating/cooling equipment replacements. Variable frequency drives on supply fan motors will reduce the fan speed depending on the building load thereby reducing the heat generated by the fan. This results in reduced cooling costs during cooling season and increased heating costs during heating season. These load changes are negligible because of the size of the fan motors. Computer power management and indoor vending machine setback will have an effect on the building heating/cooling loads similar to the lighting retrofits, only on a much smaller scale. Insulating domestic hot water tanks will not influence the other loads in the building because most of the water heaters are located in areas that are not actively heated or cooled. .


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MEGC1. Energy Policy:

Existing Conditions: The Melrose Municipal School district works to manage its energy use. Most thermostats were set up correctly and teachers seem conscientious about turning off lights when leaving the classroom. The school currently has an energy policy that is not highly publicized or well known by members of the school community.

Proposed Upgrades: An active, dynamic Energy Policy is fundamental in order for the District to (a.) reduce the impact utility costs have on the budget, (b.) ensure that energy is used efficiently, and to (c.) maintain a reliable supply of energy to meet the functional needs of the District.

The school district should re-examine their current energy policy and review it to make sure it embraces all aspects of energy conservation. The update of this policy is the joint responsibility of board members, administrators, teachers, students and support personnel and its success is based on cooperation at all levels.

The energy policy should also be highly conspicuous and known to all stakeholders. Copies of the policy and energy conserving posters should be posted in public areas. The policy should be available on the district’s web site. A sample Energy Policy is included in the appendix. The Melrose Municipal School District may wish to use this sample as a guide to modify/updating their existing policy. Savings Calculations: No additional savings were calculated for implementing an Energy Policy. Implementation Costs: An Energy Policy is developed and maintained by all stakeholders. The primary cost of implementation is the labor involved to review the policy and to make modifications to it. This work should be accomplished during the normal course of doing business and should not be an additional expense.

Operations and Maintenance: This measure is primarily an operations and maintenance activity. It is the summation of many small activities done by everyone involved in the school district.


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MEGC3. Lighting Upgrades:

Existing Conditions: A lighting survey has been performed to evaluate the need for lighting efficiency upgrades.

Proposed Upgrades: The following table details the existing and proposed lighting system in this building. The Burn Hour Code references the table following this table and indicates the run hours for each lighting area. The Lighting Code indicates the type of new lighting. If the Lighting Code starts with an N then this indicates a new fixture and includes new ballasts. If the Lighting Code starts with an R then this indicates a retrofit fixture and includes new ballasts for fixtures using ballasts. The type of ballast is indicated by the last set of digits of the Lighting Code – LP for Low Power, SP for Standard Power, and HP for High Power. Recommend the following lighting upgrades and occupancy sensors for Melrose Elementary School:

Burn Hour Lighting Code Exist Exist New NewRoom Type Code (Upgraded System) Lighting Description (Existing System) Lighting Description (Upgraded System) Qty Watts Qty WattsHALL H-OS RF 2LR[T8-2-32-IS-HP] EXISTING (4) LAMP F32T8 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 15 111 15 64HALL Z ZZ DD EXISTING LED LUMINAIRE NOT INCLUDED IN PROJECT 6 4 6 4HALL H-OS ZZZ OS DTC NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 4 0 4 0HALL H-OS CF 13CFL EXISTING 60 WATT INCANDESCENT LUM COMPACT FLUORESCENT LAMP: SCREW-IN 1 60 1 13OFFICE O-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 4 58 4 41OFFICE O-OS ZZZ OS WIR NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0NURSE O-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 4 58 4 41NURSE O-OS ZZZ OS DTC NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0RESTROOM RR CF 13CFL EXISTING 60 WATT INCANDESCENT LUM COMPACT FLUORESCENT LAMP: SCREW-IN 1 60 1 13BASEMENT S RF 2LR[T8-2-32-IS-SP] EXISTING (4) LAMP F32T8 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 6 111 6 47BASEMENT S R 1L(V)[T8-1-32-IS-LP] EXISTING (1) LAMP F32T8 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 32 1 22BASEMENT Z ZZ DD EXISTING LED LUMINAIRE NOT INCLUDED IN PROJECT 4 4 4 4CLASSROOM CES-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 18 58 18 41CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0CLASSROOM CES-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 18 58 18 41CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0CLASSROOM CES-OS RF 2LR[T8-2-32-IS-HP] EXISTING (4) LAMP F32T8 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 14 111 14 64CLASSROOM CES-OS ZZZ OS DTC-3PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0CLASSROOM CES-OS RF 2LR[T8-2-32-IS-HP] EXISTING (4) LAMP F32T8 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 14 111 14 64CLASSROOM CES-OS ZZZ OS DTC-3PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0LIBRARY RC-OS RF 2LR[T8-2-32-IS-HP] EXISTING (4) LAMP F32T8 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 20 111 20 64LIBRARY Z ZZ DD EXISTING LED LUMINAIRE NOT INCLUDED IN PROJECT 1 4 1 4LIBRARY RC-OS ZZZ OS DTC-3PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 2 0 2 0LIBRARY RC-OS CF 13CFL EXISTING 60 WATT INCANDESCENT LUM COMPACT FLUORESCENT LAMP: SCREW-IN 1 60 1 13OFFICE O-OS RF 2LR[T8-2-32-IS-HP] EXISTING (4) LAMP F32T8 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 2 111 2 64OFFICE O-OS ZZZ OS WIR NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0STORAGE S CF 13CFL EXISTING 60 WATT INCANDESCENT LUM COMPACT FLUORESCENT LAMP: SCREW-IN 1 60 1 13STORAGE JC R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F32T8 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 58 1 42CLASSROOM CES-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 18 58 18 41CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0HALL S R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F32T8 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 58 1 42RESTROOM RR CF 13CFL EXISTING 60 WATT INCANDESCENT LUM COMPACT FLUORESCENT LAMP: SCREW-IN 1 60 1 13CLASSROOM CES-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 18 58 18 41CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0HALL S R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F32T8 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 58 1 42RESTROOM RR CF 13CFL EXISTING 60 WATT INCANDESCENT LUM COMPACT FLUORESCENT LAMP: SCREW-IN 1 60 1 13CLASSROOM CES-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 18 58 18 41CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0CLASSROOM CES-OS ZZZ OS WIR NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0CLASSROOM CES-OS R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F32T8 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 2 58 2 42RESTROOM RR-OS ZZZ OS DTC-HARD NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0RESTROOM RR-OS R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F32T8 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 2 58 2 42RESTROOM RR-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 2 58 2 41RESTROOM RR-OS CF 13CFL EXISTING 60 WATT INCANDESCENT LUM COMPACT FLUORESCENT LAMP: SCREW-IN 1 60 1 13RESTROOM RR-OS R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F32T8 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 58 1 42STORAGE JC CF 13CFL EXISTING 60 WATT INCANDESCENT LUM COMPACT FLUORESCENT LAMP: SCREW-IN 1 60 1 13CLASSROOM CES-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 18 58 18 41CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0CLASSROOM CES-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 18 58 18 41CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0OFFICE O-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 4 58 4 41OFFICE O-OS ZZZ OS DTC NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0BREAKRM L-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 4 58 4 41BREAKRM L-OS ZZZ OS DTC NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0RESTROOM RR-OS ZZZ OS DTC-HARD NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0RESTROOM RR-OS R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F32T8 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 2 58 2 42CLASSROOM CES-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 18 58 18 41CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0CLASSROOM CES-OS R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F32T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 18 58 18 41CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0CLASSROOM CES-OS RF 2LR[T8-2-32-IS-HP] EXISTING (4) LAMP F40T12 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 6 144 6 64CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0CLASSROOM CES-OS RF 2LR[T8-2-32-IS-HP] EXISTING (4) LAMP F40T12 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 3 144 3 64CLASSROOM CES-OS RF 2LR[T8-2-32-IS-HP] EXISTING (4) LAMP F32T8 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 12 111 12 64CLASSROOM CES-OS ZZZ OS DTC-2PP NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0


2/4/11 Page 19

Recommend the following lighting upgrades and occupancy sensors for Melrose Old Gym/Student Commons:

Burn Hour Lighting Code Exist Exist New NewRoom Type Code (Upgraded System) Lighting Description (Existing System) Lighting Description (Upgraded System) Qty Watts Qty WattsHALL Z ZZ DD EXISTING LED LUMINAIRE NOT INCLUDED IN PROJECT 3 4 3 4HALL H R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 8 72 8 42RESTROOM RR-OS ZZZ OS DTC-HARD NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0RESTROOM RR-OS R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 3 72 3 42ENTRY HALL S R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 72 1 42RESTROOM RR-OS ZZZ OS DTC-HARD NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0RESTROOM RR-OS R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 3 72 3 42STORAGE S CF 13CFL EXISTING 60 WATT INCANDESCENT LUM COMPACT FLUORESCENT LAMP: SCREW-IN 1 60 1 13STORAGE S R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 2 72 2 42ENTRANCE S RF 2LR[T8-2-32-IS-SP] EXISTING (4) LAMP F40T12 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 24 144 24 47HALL Z ZZ DD EXISTING LED LUMINAIRE NOT INCLUDED IN PROJECT 3 4 3 4HALL S RF 2LR[T8-2-32-IS-HP]-HEXISTING (4) LAMP F32T8 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 37 111 37 64WORKROOM OO-OS ZZZ OS DTC NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0WORKROOM OO-OS RF 2LR[T8-2-32-IS-HP] EXISTING (4) LAMP F40T12 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 5 144 5 64RESTROOM RR R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 72 1 42RESTROOM RR R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 72 1 42CONFERENCE RCF-OS ZZZ OS DTC NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0CONFERENCE RCF-OS RF 2LR[T8-2-32-IS-HP] EXISTING (4) LAMP F40T12 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 8 144 8 64CONFERENCE RCF-OS ZZ DD EXISTING (2) 26 WATT PLUG IN COMPAC NOT INCLUDED IN PROJECT 9 54 9 54STORAGE S R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 72 1 42RESTROOM RR R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 72 1 42ELECTRICAL M R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 2 72 2 42ELECTRICAL M R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 2 72 2 41GYM Z ZZ DD EXISTING LED LUMINAIRE NOT INCLUDED IN PROJECT 3 4 3 4GYM G-OS N 5T5HO-GYM-OS EXISTING 400 WATT METAL HALIDE LUMNEW: T5HO LUMINAIRE 20 460 20 264GYM LOCKERS GL-OS ZZZ OS DTC NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 2 0 2 0GYM LOCKERS GL-OS R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F32T8 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 4 58 4 42GYM LOCKERS GL-OS R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 4 72 4 42STORAGE S R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 72 1 42OFFICE O-OS ZZZ OS DTC NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 1 0 1 0OFFICE O-OS R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 4 72 4 42GYM LOCKERS GL-OS ZZZ OS DTC NO EXISTING LIGHTING CONTROL NEW: OCCUPANCY SENSOR 2 0 2 0GYM LOCKERS GL-OS R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 12 72 12 42STORAGE S R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 72 1 42HALL H RF 2LR[T8-2-32-IS-HP] EXISTING (4) LAMP F40T12 LUMINAIRE REFLECTOR KIT: T8 LAMP AND ELECTRON 2 144 2 64STAGE S ZZ DD EXISTING 23 WATT COMPACT FLUORESC NOT INCLUDED IN PROJECT 5 23 5 23STORAGE S R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 4 72 4 42STORAGE S R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 4 72 4 42MAINT SHOP H R 2L[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 12 72 12 42MAINT SHOP H R 2LT[T8-4-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 12 72 12 41OFFICE O R 2L(W)[T8-2-32-IS-LP] EXISTING (2) LAMP F40T12 LUMINAIRE RETROFIT: RETROFIT WITH 4' T8 LAMPS AN 1 72 1 42GARAGE Z ZZ DD EXISTING LED LUMINAIRE NOT INCLUDED IN PROJECT 1 4 1 4GARAGE H N 1X82WR[T8-2-32-IS-SPEXISTING (2) LAMP F96T12 SLIMLINE LUMNEW: T8 LUMINAIRE 12 135 12 47GARAGE H RF 1X82WC[T8-2-32-IS-HEXISTING (2) LAMP F96T12 SLIMLINE LUMREFLECTOR KIT: T8 LAMP AND ELECTRON 1 135 1 64STORAGE Z CF 13CFL EXISTING 60 WATT INCANDESCENT LUM COMPACT FLUORESCENT LAMP: SCREW-IN 1 60 1 13

Recommend the following lighting upgrades the Melrose Main Building exterior lights:

Burn Hour Lighting Code Exist Exist New NewRoom Type Code (Upgraded System) Lighting Description (Existing System) Lighting Description (Upgraded System) Qty Watts Qty WattsEXTERIOR X IND N 100WPK EXISTING 250 WATT METAL HALIDE LUMNEW: INDUCTION LUMINAIRE 6 295 6 111EXTERIOR X IND N 40B-PC EXISTING 100 WATT METAL HALIDE LUMNEW: INDUCTION LUMINAIRE 2 129 2 44EXTERIOR X CF 18CFL EXISTING 100 WATT INCANDESCENT LUMCOMPACT FLUORESCENT LAMP: SCREW-IN 1 100 1 18EXTERIOR X CF 13CFL EXISTING 60 WATT INCANDESCENT LUM COMPACT FLUORESCENT LAMP: SCREW-IN 3 60 3 13EXTERIOR X IND N 40B-PC EXISTING 100 WATT HIGH PRESSURE SO NEW: INDUCTION LUMINAIRE 1 130 1 44EXTERIOR X ZZ DD EXISTING 65 WATT COMPACT FLUORESC NOT INCLUDED IN PROJECT 1 65 1 65EXTERIOR X IND N 40B-PC EXISTING 100 WATT METAL HALIDE LUMNEW: INDUCTION LUMINAIRE 1 129 1 44EXTERIOR X IND N 150FLOOD EXISTING 400 WATT METAL HALIDE LUMNEW: INDUCTION LUMINAIRE 1 460 1 165EXTERIOR X IND N 40WPK-PC EXISTING 50 WATT HIGH PRESSURE SOD NEW: INDUCTION LUMINAIRE 1 72 1 44


2/4/11 Page 20

The hours of operation were figured for the existing lighting system per the following table:

Existing Hours

Weekly Weekly Weekly Weekly Total Total Total Total DiversityNumber Number Winter Winter Summer Summer Winter Winter Summer Summer Total Factor

Burn Hour Area Winter Summer Peak Off Peak Peak Off Peak Peak Off Peak Peak Off Peak Annual (DF)Code Description Months Months Hours Hours Hours Hours Hours Hours Hours Hours Hours for kWA Auditorium 8 4 30 10 30 10 1044 348 522 174 2088 0.95C Classrooms 8 2.5 30 10 30 10 1044 348 326.25 108.75 1827 0.95CES Classrooms-Elementary School 8 2.5 30 10 30 10 1044 348 326.25 108.75 1827 0.95CES-OS Classrooms-Elem, add new sensor 8 2.5 30 10 30 10 1044 348 326.25 108.75 1827 0.95C-EXST-OS Classrooms-Elem, existing sensor 8 2.5 24 7 24 7 835.2 243.6 261 76.125 1415.9 0.9CF Conf. Room 8 4 30 10 30 10 1044 348 522 174 2088 0.95CF-EXST-OS Conf. Room, existing sensor 8 4 24 7 24 7 835.2 243.6 417.6 121.8 1618.2 0.9CF-OS Conf. Room, add new sensor 8 4 30 10 30 10 1044 348 522 174 2088 0.95CHS Classrooms-High School 8 2.5 40 10 40 10 1392 348 435 108.75 2283.8 0.95CHS-OS Classrooms-HS, add new sensor 8 2.5 40 10 40 10 1392 348 435 108.75 2283.8 0.95CMS Classrooms-Middle School 8 2.5 35 10 35 10 1218 348 380.625 108.75 2055.4 0.95CMS-OS Classrooms-MS, add new sensor 8 2.5 35 10 35 10 1218 348 380.625 108.75 2055.4 0.95C-OS Classrooms- add new sensor 8 2.5 30 10 30 10 1044 348 326.25 108.75 1827 0.95G Gyms 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95GL Gym lockers 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95GL-EXST-OS Gym lockers, existing sensor 8 4 27.5 22 27.5 22 957 765.6 478.5 382.8 2583.9 0.9GL-OS Gym lockers, add new sensor 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95G-OS Gyms, add new sensor 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95H Halls & common areas 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95H-EXST-OS Hallways, existing sensor 8 4 27.5 22 27.5 22 957 765.6 478.5 382.8 2583.9 0.85H-OS Hallways, add new sensor 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95JC Janitor Closet 8 4 5 5 5 5 174 174 87 87 522 0.2JC-OS Janitor Closet, add new sensor 8 4 5 5 5 5 174 174 87 87 522 0.2K Kitchen 8 2.5 30 10 30 10 1044 348 326.25 108.75 1827 0.95K-EXST-OS Kitchen , existing sensor 8 2.5 25 7.5 25 7.5 870 261 271.875 81.5625 1484.4 0.9K-OS Kitchen, add new sensor 8 2.5 30 10 30 10 1044 348 326.25 108.75 1827 0.95L Cafeteria 8 4 30 10 30 10 1044 348 522 174 2088 0.95L-EXST-OS Cafeteria, existing sensor 8 4 20 6 20 6 696 208.8 348 104.4 1357.2 0.85L-OS Cafeteria, add new sensor 8 4 30 10 30 10 1044 348 522 174 2088 0.95M Maintenance Areas 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95M-EXST-OS Maitenance Areas, existing sensor 8 4 32 27.2 32 27.2 1114 946.56 556.8 473.28 3090.2 0.9M-OS Maintenance Areas, add new sensor 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95O Offices 8 4 40 20 40 20 1392 696 696 348 3132 0.95O-EXST-OS Offices, existing sensor 8 4 32 16 32 16 1114 556.8 556.8 278.4 2505.6 0.9OO Open Office 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95OO-EXST-OS Open Offices, existing sensor 8 4 30 25.5 30 25.5 1044 887.4 522 443.7 2897.1 0.9OO-OS Open Offices, add new sensor 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95O-OS Offices, add new sensor 8 4 40 20 40 20 1392 696 696 348 3132 0.95P Pool 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95RC Library 8 4 30 10 30 10 1044 348 522 174 2088 0.95RC-OS Library, add new sensor 8 4 30 10 30 10 1044 348 522 174 2088 0.95RR Restrooms 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95RR-EXST-OS Restrooms, existing sensor 8 4 13 9 13 9 452.4 313.2 226.2 156.6 1148.4 0.85RR-OS Restrooms, add new sensor 8 4 40 34 40 34 1392 1183.2 696 591.6 3862.8 0.95RR-P Restrooms, private 8 4 5 5 5 5 174 174 87 87 522 0.2RR-P-EXST-ORestrooms, private, existing sensor 8 4 4 4 4 4 139.2 139.2 69.6 69.6 417.6 0.2RR-P-OS Restrooms, private, add new sensor 8 4 5 5 5 5 174 174 87 87 522 0.2S Storage Areas 8 4 5 5 5 5 174 174 87 87 522 0.2S-EXST-OS Storage Areas, existing sensor 8 4 4 4 4 4 139.2 139.2 69.6 69.6 417.6 0.2S-OS Storage Areas, add new sensor 8 4 5 5 5 5 174 174 87 87 522 0.2X Outside Areas 8 4 0 84 0 84 0 2923.2 0 1461.6 4384.8 0.05Z 24 Hour Areas 8 4 40 128 40 128 1390 4451.9 693.5 2224.7 8759.6 1Z-OS 24 Hour Areas, add new sensor 8 4 40 128 40 128 1390 4451.9 693.5 2224.7 8759.6 1


2/4/11 Page 21

The proposed hours of operation were then figured with the addition of occupancy sensors per the following table:

Upgraded Hours

Total Total Total Total Diversity% Hour % Diversity Number Number Winter Winter Summer Summer Total Factor

Area Reduction/ Factor (DF) Winter Summer Peak Off Peak Peak Off Peak Annual (DF)Description Sensors Reduct / Sensors Months Months Hours Hours Hours Hours Hours for kWAuditorium 8 4 1044 348 522 174 2088 0.95Classrooms 8 2.5 1044 348 326.25 108.75 1827 0.95Classrooms-Elementary School 8 2.5 1044 348 326.25 108.75 1827 0.95Classrooms-Elem, add new sensor 0.33 0.1 8 2.5 699.48 233.16 218.5875 72.8625 1224.09 0.85Classrooms-Elem, existing sensor 8 2.5 835.2 243.6 261 76.125 1415.925 0.9Conf. Room 8 4 1044 348 522 174 2088 0.95Conf. Room, existing sensor 8 4 835.2 243.6 417.6 121.8 1618.2 0.9Conf. Room, add new sensor 0.33 0.1 8 4 699.48 233.16 349.74 116.58 1398.96 0.85Classrooms-High School 8 2.5 1392 348 435 108.75 2283.75 0.95Classrooms-HS, add new sensor 0.33 0.1 8 2.5 932.64 233.16 291.45 72.8625 1530.113 0.85Classrooms-Middle School 8 2.5 1218 348 380.625 108.75 2055.375 0.95Classrooms-MS, add new sensor 0.33 0.1 8 2.5 816.06 233.16 255.0188 72.8625 1377.101 0.85Classrooms- add new sensor 0.2 0.05 8 2.5 835.2 278.4 261 87 1461.6 0.9Gyms 8 4 1392 1183.2 696 591.6 3862.8 0.95Gym lockers 8 4 1392 1183.2 696 591.6 3862.8 0.95Gym lockers, existing sensor 8 4 957 765.6 478.5 382.8 2583.9 0.9Gym lockers, add new sensor 0.5 0.1 8 4 696 591.6 348 295.8 1931.4 0.85Gyms, add new sensor 0.33 0.1 8 4 932.64 792.744 466.32 396.372 2588.076 0.85Halls & common areas 8 4 1392 1183.2 696 591.6 3862.8 0.95Hallways, existing sensor 8 4 957 765.6 478.5 382.8 2583.9 0.85Hallways, add new sensor 0.33 0.1 8 4 932.64 792.744 466.32 396.372 2588.076 0.85Janitor Closet 8 4 174 174 87 87 522 0.2Janitor Closet, add new sensor 0.2 8 4 139.2 139.2 69.6 69.6 417.6 0.2Kitchen 8 2.5 1044 348 326.25 108.75 1827 0.95Kitchen , existing sensor 8 2.5 870 261 271.875 81.5625 1484.438 0.9Kitchen, add new sensor 0.2 0.05 8 2.5 835.2 278.4 261 87 1461.6 0.9Cafeteria 8 4 1044 348 522 174 2088 0.95Cafeteria, existing sensor 8 4 696 208.8 348 104.4 1357.2 0.85Cafeteria, add new sensor 0.33 0.1 8 4 699.48 233.16 349.74 116.58 1398.96 0.85Maintenance Areas 8 4 1392 1183.2 696 591.6 3862.8 0.95Maitenance Areas, existing sensor 8 4 1113.6 946.56 556.8 473.28 3090.24 0.9Maintenance Areas, add new sensor 0.2 0.05 8 4 1113.6 946.56 556.8 473.28 3090.24 0.9Offices 8 4 1392 696 696 348 3132 0.95Offices, existing sensor 8 4 1113.6 556.8 556.8 278.4 2505.6 0.9Open Office 8 4 1392 1183.2 696 591.6 3862.8 0.95Open Offices, existing sensor 8 4 1044 887.4 522 443.7 2897.1 0.9Open Offices, add new sensor 0.25 0.05 8 4 1044 887.4 522 443.7 2897.1 0.9Offices, add new sensor 0.2 0.05 8 4 1113.6 556.8 556.8 278.4 2505.6 0.9Pool 8 4 1392 1183.2 696 591.6 3862.8 0.95Library 8 4 1044 348 522 174 2088 0.95Library, add new sensor 0.2 0.05 8 4 835.2 278.4 417.6 139.2 1670.4 0.9Restrooms 8 4 1392 1183.2 696 591.6 3862.8 0.95Restrooms, existing sensor 8 4 452.4 313.2 226.2 156.6 1148.4 0.85Restrooms, add new sensor 0.75 0.2 8 4 348 295.8 174 147.9 965.7 0.75Restrooms, private 8 4 174 174 87 87 522 0.2Restrooms, private, existing sensor 8 4 139.2 139.2 69.6 69.6 417.6 0.2Restrooms, private, add new sensor 0.2 8 4 139.2 139.2 69.6 69.6 417.6 0.2Storage Areas 8 4 174 174 87 87 522 0.2Storage Areas, existing sensor 8 4 139.2 139.2 69.6 69.6 417.6 0.2Storage Areas, add new sensor 0.2 8 4 139.2 139.2 69.6 69.6 417.6 0.2Outside Areas 8 4 0 2923.2 0 1461.6 4384.8 0.0524 Hour Areas 8 4 1389.5 4451.9 693.5 2224.7 8759.6 124 Hour Areas, add new sensor 0.33 0.1 8 4 930.97 2982.77 464.645 1490.549 5868.932 0.9


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Savings Calculations:

The following formulae were used to calculate the energy savings from the lighting upgrades:

1) Kilowatts (kW) Existing kW = pre-retrofit unit kW Proposed kW = post-retrofit unit kW Total Existing kW = Existing kW * Existing Qty * Global Diversity Total Proposed kW = Proposed kW * Proposed Qty * Global Diversity Total Saved kW = Total Existing kW – Total Proposed kW Total kW Dollars Saved = Total Saved kW * kW rate 2) Kilowatt-hours (kWh) Total Existing kWh = Total Existing kW * Hours of Operation Total Proposed kWh = Total Proposed kW * Hours of Operation Total Saved kWh = Total Existing kWh – Total Proposed kWh Total kWh Dollars Saved = Total Saved kWh * kWh rate 3) Total Dollars Saved Total Dollars Saved = Total kW Dollars Saved + Total kWh Dollars Saved + O&M Saved Global Diversity and Diversity Factor (DF) are the probability that a particular lighting fixture will be on at the time of the facility’s peak load. The existing and proposed lighting system run hours from the hour tables above were reduced to 60% of the table values to match the lighting load with the utility bills. Savings Calculations Summary: MELROSE ELEMENTARY Upgraded Quantity of Luminaires 330

Total kW Used (Existing System) with DF 20.09Total kW used (Existing System) without DF 22.09Total kW Used (Upgraded System) with DF 11.40Total kW used (Upgraded System) without DF 13.76Total kW Saved 8.69Total kW Saved - Max Potential 8.33Total kWh Used (Existing System) 27,624Total kWh Used (Upgraded System) 11,761Total kWh Saved 15,863Occupancy Sensor Savings Total kWh (Included in Totals 5,011Occupancy Sensor Savings (Included in Totals) $503Total Savings (Energy) $1,659HVAC Penalty or Savings $0Total Maint. Savings (Material & Labor) $84Total Savings (Maint, HVAC, Energy) $1,743


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MELROSE OLD GYM/COMMONS Upgraded Quantity of Luminaires 228Total kW Used (Existing System) with DF 18.19Total kW used (Existing System) without DF 27.43Total kW Used (Upgraded System) with DF 9.24Total kW used (Upgraded System) without DF 14.55Total kW Saved 8.95Total kW Saved - Max Potential 12.89Total kWh Used (Existing System) 44,437Total kWh Used (Upgraded System) 18,158Total kWh Saved 26,279Occupancy Sensor Savings Total kWh (Included in Totals 5,602Occupancy Sensor Savings (Included in Totals) $541Total Savings (Energy) $2,568HVAC Penalty or Savings $0Total Maint. Savings (Material & Labor) $125Total Savings (Maint, HVAC, Energy) $2,693

MELROSE MAIN EXTERIOR Upgraded Quantity of Luminaires 17

Total kW Used (Existing System) with DF 0.00Total kW used (Existing System) without DF 3.16Total kW Used (Upgraded System) with DF 0.00Total kW used (Upgraded System) without DF 1.17Total kW Saved 0.00Total kW Saved - Max Potential 1.99Total kWh Used (Existing System) 8,324Total kWh Used (Upgraded System) 3,086Total kWh Saved 5,238Occupancy Sensor Savings Total kWh (Included in Totals 0Occupancy Sensor Savings (Included in Totals) $0Total Savings (Energy) $435HVAC Penalty or Savings $0Total Maint. Savings (Material & Labor) $34Total Savings (Maint, HVAC, Energy) $469

The life expectancy of the lighting upgrades depends on the type of fixture/bulb installed and the annual hours of usage of the lights. Below is a chart with typical life expectancy for different lighting components:

REFERENCE SOURCEEQUIPMENT USE CA CPUC WA ELCCA

(YEARS) 2010 2005(Curr)Lighting

Electronic ballasts 16 16 12Compact fluorescent 16 16 12Exit sign 16 16Fixtures HID 16 16 20Fixtures T8 16 16 20Lighting controls 16 16Occupancy sensors 10 10Time clock 10 8 10


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Implementation Costs: The cost to remove the existing lighting system and install the new lighting system was figured using actual cost for the new bulbs, ballasts and fixtures and standard labor factors for their installation. Costs were figured by a lighting contractor who specializes in lighting upgrades. Operations and Maintenance: Operations and maintenance savings for the lighting retrofit are based on the difference between the existing lamp and ballast replacement rate and lamp and ballast replacement rate for the proposed upgrade. The first step is to calculate the Existing Average Annual Lamp Burn Outs (EAALB). This is the percentage of annual percentage of burned out lamps expected each year. It is calculated by dividing the annual hours of operation by the manufacturers stated lamp life, then multiplying by the number of lamps/ballast in each fixture.

Next, the Existing Average Annual Lamp Burn Outs percentage is multiplied by the Existing Estimated Lamp Purchase Cost (EELPC), giving us the Existing Estimated Lamp Replacement Cost (EELRC). This cost is assumed based on historical data.

The total annual cost of replacement lamps per fixture which is then multiplied by the Total Number of Existing Fixtures (TNEF) resulting in the Existing Total Lamp Replacement Material Cost (ETLRMC).

The above equations are then repeated for the proposed lighting system. The difference between the Existing Total Lamp Replacement Material Cost and the Proposed Total Lamp Replacement Material Cost will yield the Total Lamp Material Savings (TLMS).

Similar calculations are repeated for ballasts. Labor costs are calculated for replacing the number of units defined by the above equations. It is assumed lamps will be changed by custodial staff and ballasts will be replaced by an electrician. The total lamp labor savings and total ballast labor savings are then added together to yield the Total Labor Savings (TLS).


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Finally, the Total Labor Savings is added to the Total Material Savings to yield the Total Maintenance Savings.

Total Labor Savings = Total Labor Savings + Total Material Savings See Appendix for full set of equations.


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MEGC5. Building Weatherization Upgrades: Existing Conditions: The caulking in the exterior wall expansion joints is deteriorated. The caulking around the windows is also deteriorated. The majority of the doors have damaged or missing weatherstripping. A building envelope survey has been performed to evaluate the need for building envelope insulation and sealing upgrades. Thermal images were taken of different areas to assess current building conditions. The red areas show conductive and convective heat loss through and around the windows.

Melrose elementary teachers lounge.

IR20101102_0020.is2 11/2/2010 1:25:07 PM South facing window. Radiant heat reflected into room.

Visible Light Image

Image Info Background temperature 68.0°F Emissivity 0.95 Transmission 1.00 Average Temperature 82.1°F Image Range 71.6°F to 117.1°F Camera Model FLXR2 Camera serial number FLXR2-0606097 Camera Manufacturer Infrared Solutions Image Time 11/2/2010 1:25:07 PM

Main Image Markers Name Temperature Emissivity Background Hot 117.1°F 0.95 68.0°F P0 103.0°F 0.95 68.0°F


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Proposed Upgrades: Caulk all windows and exterior wall expansion joints and replace weatherstripping on all exterior doors. The caulking and weatherstripping will reduce air leakage through the building envelope. Controlling air leakage is one of the most important functions of weatherization. The main goals of air leakage control are to: save energy, increase comfort, protect insulation’s thermal integrity, reduce direct cooling or heating of people and building components by outdoor air, and avoid moisture migration into building cavities. There are approximately 1,164 linear feet of windows and doors that need re-caulking. Repair/replace weatherstripping on all ten exterior doors The average useful life for caulking varies by type of caulking used. High-quality caulking compounds with a long life expectancy are generally more expensive, but end up being the most cost effective. Assuming that the caulking material is used outside as directed by the manufacturer, the following useful life may be expected: Silicone-30 years; polysulfides, polyurethanes, neoprene, acrylic, vulcanized butyl rubber-20 years; acrylic-latex, butyl rubber, and synthetic caulking compounds-8 to 10 years; cheaper caulking compounds-3 to 5 years. This energy conservation measure assumes the use of caulking with a 20 to 30 year life expectancy. Weatherstripping comes in a variety of shapes and sizes. Interlocking metal weatherstripping is made of two V-strips that are placed on the door and the door frame. When the door closes, the two pieces interlock to make a tight seal. Interlocking pieces are placed completely around the perimeter of the door — on the top, both sides and the bottom. Tubular rubber and vinyl gaskets consist of small tubes of sponge rubber or vinyl also can be used to weatherstrip around doors and windows. When the door presses against the gasket, it forms a tight seal. By pressing against these gaskets, the door forms a seal. The type of weatherstripping used depends on the condition and type of the existing door and frame. These two types of weatherstripping have a life expectancy between six and twelve years.


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Savings Calculations:

ANNUAL ENERGY SAVINGS Units SavedKWH Saved Weatherstripping & Caulking 425

MMBtu Saved Weatherstripping and Caulking 75.9

Weatherstripping & Caulking Weatherstripping & CaulkingHeating Savings Cooling Savings

% CFM Used 90% % CFM Used 10%Existing CFM 933 Existing CFM 933

BTU/Deg/CFM/hr 1.08 BTU/Deg/CFM/hr 1.08DEG/DIF.= 24.9 DEG/DIF.= 10

BTU/HR 22,583 BTU/HR 1,008Hours/Day 24.00 Hours/Day 24.00Days/ Year 140 Days/ Year 60

Total Hours / Year 3,360 Total Hours / Year 1,440MMBTU Savings 75.9 kWH Savings 425

Calculation of Crack Area

Work to be No. of Units Perimeter(ft)

Crackage

(in)Conversion to feet Product

Exit Doors 10 24 1/64 1/12 = 0.3125Caulking 1 1164 1/64 1/12 = 1.515625

- 0 1/8 1/12 = 0- 0 1/16 1/12 = 0- 0 1/16 1/12 = 0

Total = 1.828125

Infiltration Savings

Total CrackArea(SF)

AverageWind Speed

(MPH)

AverageWind Speed

(FPM)

Windward

Diversity(%)

InfiltrationSavings(CFM)

A B C =B x 5280 / 60 DE =

A x C x D1.83 11.6 1020.8 50% 933.075

Note: Avg winter outside air temp used to determine DEG/DIF is based on: (3482 degree days from METRIX)/(7 days/wk)/(20 wks/year) = 24.9 degree delta T.

65 degree F balance point (from METRIX) - 24.9.0 degree F = 40.1 Avg Outside Air Temp.

Average Wind Speed (Clovis AFB) = 11.6 MPH (Western Regional Climate Center)

Sealing, Weatherstripping, Caulking, Windows & Doors

Natural Gas Annual Savings = (Existing MMBTU – Proposed MMBTU) * Dollars/MMBTU = 75.9* $8.17 = $ 620.10 Electricity Annual Savings = (Existing kWh – Proposed kWh)*Dollars/kWh = 425*0.083 = $ 35.28 Total Annual Savings = Natural Gas Annual Savings + Electricity Annual Savings = $ 655.38 Implementation Costs: The estimated implementation costs for weatherstripping and caulking were provided by a building inspection firm.

Operations and Maintenance: The proposed building envelope upgrades do not affect operations and maintenance costs.


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MEGC6. Computer Power Management: Existing Conditions: The existing computers in the classrooms and offices are turned on and off by the teachers or administrative staff. Some individuals turn their computers off daily and some leave them running.

Proposed Upgrades: Install free power management software by Verdiem that allows for scheduling standby modes. This software needs to be loaded on each computer and provides enhanced power management. Savings Calculations: The following formulae were used to calculate the energy saving from the computer management upgrades:

1) Kilowatt-hours (kWh) Existing Existing Active Mode = 150 watts per PC/monitor combination Existing Standby Mode = 18 watts per PC/monitor combination Average Hours Per Week of Active Mode = 40 Average Hours per Week of Standby Mode = 56 Weeks per Year = 40 Total Existing Active kWh per PC/Monitor = Existing W * Hours/Week * Weeks/1000 = 240 Total Existing Standby kWh per PC/Monitor = Existing W * Hours/Week * Weeks/1000 = 40 Total Existing kWh per PC = Active kWh + Standby kWh =280 Total Existing kWh = # of PC/Monitors (85)* Total kWh/PC =23,800 2) Kilowatt-hours (kWh) Proposed Proposed Active Mode = 150 watts per PC/monitor combination Proposed Standby Mode = 18 watts per PC/monitor combination Average Hours Per Week of Active Mode = 32 Average Hours per Week of Standby Mode = 64 Weeks per Year = 40 Total Proposed Active kWh per PC/Monitor = Proposed W * Hours/Week * Weeks/1000 =192 Total Proposed Standby kWh per PC/Monitor = Proposed W * Hours/Week * Weeks/1000 = 46 Total Proposed kWh per PC = Active kWh + Standby kWh =238 Total Proposed kWh = # of PC/Monitors (85)* Total kWh/PC =20,230 3) Total Dollars Saved Total Dollars Saved = (Existing kWh – Proposed kWh)*Dollars/kWh = $ 296.31

Implementation Costs: The software program to manage PC power is a free program available from Verdiem. The cost for installing the program on each computer and making the necessary settings is based on an average of twenty minutes per computer or $ 10.00 labor cost.

Operations and Maintenance: The additional time the computers spend in standby mode should slightly increase their life since hard disks are not spinning in standby mode and power supplies are at minimum output.


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MEGC8. Insulate Domestic Hot Water Tank: Existing Conditions: Two natural gas fired domestic hot water heater located in the janitorial/equipment room provides domestic hot water to the Old Gym lockers and restrooms. Each heater is rated at 40,000 BTU/Hour. The heater in the lockers has a 50 gallon capacity and the heater located by the restroom has a 40 gallon capacity. The existing water heater jackets have an approximate R-value of 7.

Proposed Upgrades: Install a water heater insulating blankets with an R-value of 7 around each of the domestic hot water tanks. The total R-value for the tanks will now be 14. Savings Calculations:

Water heater base case and modifications were run in the eQuest simulation software with the following results:

Domestic Hot Water Usage in Melrose Old Gym in MMBTU

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec TotalExisting 4.1 4.1 4.9 4.6 3.9 0.6 0.6 0.6 3.4 3.4 3.7 4.2 38Insulated 3.5 3.6 4.3 4 3.4 0.3 0.3 0.3 2.9 2.9 3.1 3.6 32.2

Savings 5.80 Natural Gas Annual Savings=MMBTU Base – MMBTU DHW * Dollars/MMBTU=5.8* $8.17=$47.39

Implementation Costs: The cost for materials to insulate each domestic hot water tank is estimated at $ 85.00. The cost for installing the insulation for each tank is estimated at $ 95.00.

Operations and Maintenance: This measure does not impact operations and maintenance cost.


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MEGC12. Enable Return Air for Old Gym Furnace: Existing Conditions: Two 75,000 BTU/Hour gas-fired furnaces heat the Old Gym. These furnaces are located above the dressing rooms off the stage and get their return air through the vents cut in the dressing room doors. The vent in dressing room 4 is blocked causing the furnace to operate less efficiently since these units operate on 100% return air.

Proposed Upgrades: Open the vent in the door to dressing room 4 to allow return air to get to the furnace in an unconstructive manner. Savings Calculations:

1) Energy Used to Heat Gym Area Old Gym Heated Area in Square Feet = 11,631 MMBTU/Square Foot/Year = 0.0385 MMBTU/Year to Heat Gym = 447.94 Load for Each Furnace MMBTU/Year = Total Load/# Furnaces = 223.97 Total Existing Active kWh per PC/Monitor = Existing W * Hours/Week * Weeks/1000 = 240 Total Existing Standby kWh per PC/Monitor = Existing W * Hours/Week * Weeks/1000 = 40 Total Existing kWh per PC = Active kWh + Standby kWh =280 Total Existing kWh = # of PC/Monitors (85)* Total kWh/PC =23,800 2) Energy Savings Improving the return air flow will improve the annual heating efficiency of the furnace by 1% Yearly Savings = 1% X Annual Energy Consumed by One Furnace in MMBTU/Year= 2.24 3) Total Dollars Saved Total Annual Dollars Saved = (MMBTU/Year Saved)*Dollars per MMBTU/Year = 2.24 * $ 8.17 = $18.30

Implementation Costs: The cost for repairing the blocked vent in the door is estimated at $ 90.00.

Operations and Maintenance: Improving the air flow path for the furnace should allow the furnace to function at lower differential pressure across the fan. This should improve the performance of the unit and potentially reduce maintenance costs.


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F. MEASURES CONSIDERED BUT NOT RECOMMENDED

A number of energy conservation measures were considered during the technical energy audit that will not be recommended for implementation due to paybacks exceeding fifteen years. These measures may still be feasible if combined with other ongoing renovation projects or if equipment affected needs major repairs or replacement. Each measure is discussed with estimated energy savings and costs given.

Equipment Natural Gas Natural Gas Electric Electric O&M Total Rebates Total SimpleLife $ MMBTU $ kWh $ $ $ Payback

ECM ID ECM Name Years Savings Savings Savings Savings Savings Savings Investment Years

MEGC2 Energy management system 15 $1,738 212.7 $343 4,130 $0 $2,081 $0 $76,000 36.5 MEGC4 Economizer retrofit to RTU's 15 $465 57.0 $222 2,680 $0 $687 $0 $20,400 29.7 MEGC7 Destratification fans in gym 15 $399 49.0 -$90 -1,084 $0 $309 $0 $7,200 23.3 MEGC9 Submetering 15 $0 0.0 $0 0 $0 $0 $0 $1,250 N/AMEGC10 VFD's on rooftop units 15 $0 0.0 $714 8,602 $0 $714 $0 $21,250 29.8 MEGC13 Window upgrade 30 $163 20.0 $17 205 $0 $180 $0 $6,000 33.3

Totals: $2,765 339 $1,206 14,533 $0 $3,971 $0 $132,100 33.3

Base Base Total TotalYear Year $ Energy Percent

Costs Usage Savings Savings SavingsElectric Utility $16,829 156,001 $1,206 14,533 7.2%

Natural Gas Utility $11,530 1,411 $2,765 339 24.0%

Savings and Investment Summary for Not Recommended ECM's:Melrose Elementary School/OldGym/Commons


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MEGC2. Energy Management System:

Existing Conditions: Controls throughout the Elementary building are non-programmable thermostats wired to rooftop air handling units. There are also electric unit heaters controlled by single temperature electric thermostats in the restrooms. The rooftop thermostats are set for occupied/unoccupied periods based on a seven day clock. The system does not allow for holiday scheduling and thermostats are completely disabled during unoccupied periods with no feedback on actual space conditions. The Student Commons is controlled by electronic single temperature thermostats wired to two rooftop air handling units. The Old Gym is heated by two furnaces located above the stage. Each furnace is controlled by a single temperature thermostat. Two evaporative cooling units serve the Old Gym and each is controlled by manual switches located in the gym. The locker areas are heated by a combination of electric and gas-fired unit heaters. Proposed Upgrades: Remove existing electric/electronic controls and provide new direct digital control (DDC) system. Provide DDC controls for rooftop air handlers and gym furnaces. A new DDC control system will allow the use of additional energy saving control strategies and will provide additional operational benefits. Provide a graphical user interface with user friendly graphics that will allow simple adjustments of schedules and temperature setpoints by authorized building occupants. Provide a new central operator workstation capable of interfacing to the other school buildings through the district wide computer LAN. Provide graphical user interface software, and provide sufficient training as required to allow the customer to perform setpoint and schedule adjustments. Some examples of energy saving strategies that are available with DDC controls are:

1. Enhanced time of day scheduling and automatic holiday scheduling. 2. Data trending. Status of points can be electronically monitored to aid in troubleshooting. 3. Tighter space temperature control. 4. Graphical user interface allows the on-staff facilities personnel to monitor and make

adjustments to the control system parameters. 5. All DDC space sensors can be individually monitored to help with identifying

temperature control problems. 6. Night setback savings are maximized because each room can be set back during

unoccupied times. 7. Mount all new space sensors at ADA approved height.

The energy management system payback exceeds the typical payback period for other energy conservation measures. The benefits of an energy management system go beyond the hard savings from reduced utility bills and the system can provide the basis for ongoing energy management strategies and operations.


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Points List for Energy Management System

MELROSE CONNECTED POINTS ENERGY MANAGEMENTELEMENTARY INPUTS OUTPUTS APPLICATION SOFTWARE SOFTWARE

OLD GYM/COMMONS DIGITAL ANALOG DIGITAL ANALOG

Typical for 18 RTU's A

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GRAPHIC XSUPPLY FAN X X X X

DISCHARGE AIR X X XHEAT ENABLE X X

COOL1 ENABLE X XCOOL2 ENABLE X X

SPACE TEMP X X X XSPACE SETPOINT X X

OVERRIDE X X

OLD GYM TEMP X X X X X X AOLD GYM SETPOINT X X AOLD GYM OVERRIDE X X AOLD GYM FURNACE X X X AOLD GYM EVAP FAN X A

OLD GYM EVAP PUMP X A

LOCKER TEMP X X X BLOCKER UNIT HEATER X X X X X X B

A Typical for twoB Typical for four

Includes operator workstation and central software

NOTES:

Savings Calculations: Changes to the building operation from installing an energy management system were modeled in the eQuest simulation software. Energy savings are calculated as follows: Electrical Annual Savings = (kWh Base – kWh EMS)* Dollars/kWh = 4,130*$0.083 = $ 342.79 Natural Gas Annual Savings=MMBTU Base – MMBTU EMS * Dollars/MMBTU = 212.7* $8.17 = $1,737.76 Total Annual EMS Savings = Electrical Savings + Natural Gas Savings = $ 2,080.55 See the eQuest report title TStat Management EEM on the following page:


2/4/11 Page 35

Implementation Costs: The cost to furnish and install the energy management system was calculated using the actual cost of the direct digital control system components and standard labor factors. These costs were figured by a major energy management manufacturer/contractor. Operations and Maintenance: This measure involves the installation of new controls. New controls will need to be maintained and software will need to be periodically updated following the manufacturer’s recommendations. The new control system will simplify the maintenance of occupancy schedules and setpoints. The current system requires physically going to each timeclock and adjusting the clock to account for holiday and summer shutdown periods. With the new system thermostat management can all be done from the front end computer.


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MEGC4. Economizer Retrofit of Rooftop Air Handlers: Existing Conditions:

The existing rooftop units serving the Elementary Wing have fixed outdoor air intakes with no dampers. The rooftop units serving the Student Commons have no outside air intakes and operate on 100% return air. The rooftop units could be retrofitted with economizer packages that would allow the volume of outside air to vary based upon the temperature of the outside air and the return air from the building. This would allow for higher levels of ventilation and reduce the amount of mechanical cooling required. In addition the outside air damper would close when the rooftop unit is off, reducing air infiltration into the building. The economizer package would include the modification of the sheet metal rooftop enclosure, installation of outside air, return air and exhaust air dampers and actuators and local economizer controls.

Proposed Upgrades: The rooftop units could be retrofitted with economizer packages that would allow the volume of outside air to vary based upon the temperature of the outside air and the return air from the building. This would allow for higher levels of ventilation and reduce the amount of mechanical cooling required. In addition the outside air damper would close when the rooftop unit is off, reducing air infiltration into the building. The economizer package would include the modification of the sheet metal rooftop enclosure, installation of outside air, return air and exhaust air dampers and actuators and local economizer controls. Savings Calculations: The following formulae were used to calculate the energy savings from adding economizers to the rooftop units: Natural Gas Annual Savings = (Existing MMBTU – Proposed MMBTU) * Dollars/MMBTU Electricity Annual Savings = (Existing kWh – Proposed kWh)*Dollars/kWh Total Annual Savings = Natural Gas Annual Savings + Electricity Annual Savings Changes to the building operation from installing economizers were modeled in the eQuest simulation software. See the following page for the results:


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Implementation Costs: The estimated implementation costs for the economizer retrofit were provided by the air handling equipment distributor. Operations and Maintenance: This measure would increase maintenance costs since economizer controls and dampers would need to be checked and adjusted annually.


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MEGC7. Destratification Fans in Gym: Existing Conditions: The old gym has high ceilings where during the heating season warm air rises to the upper sections while areas near the floor are considerably cooler. It takes additional energy to get the temperature at five feet off the floor comfortable.

Proposed Upgrades:

Install four destratification fans in the gym near the ceiling and run them continuously during the heating season. Savings Calculations:

ANNUAL ENERGY SAVINGS Units SavedMECHANICAL KWH Saved (1,084)

MECHANICAL KW SavedMMBtu Saved 49

ECM OPERATIONAL Savings $$$

LOCATION: GymQUANTITY: 4

Room Dimensions (ft): X 100Qty Of X Walls That Are Outside Walls: 2

Y 90Qty Of Y Walls That Are Outside Walls: 2

Window Dimensions (ft): X 0Y 0

CEILING HEIGHT 24HEIGHT USED 10DEGREE SETBACK 12HRS per WEEK 168WKS per YEAR 24HRS per YEAR 4,032Total MMBtu saved 49kWh Used/Year 1,084

CALCS & VARIABLESSurface Areas(sq. ft.): Windows 0

Walls 3,800Roof 9,000

SURFACE U FACTORS WINDOW= 1.00BTU/Hr/SQ Ft/Deg F WALL = 0.10BTU /Hr Bleed-off ROOF = 0.07

TOTAL BTU/HR/F = 1,010

DESTRATIFICATION FAN SAVINGS CALCULATIONS

ASSUMPTIONS:Paddle fans run continuosly, for 6 months or 4032 hours.

Implementation Costs: The estimated implementation costs for provided and installing destratification fans were calculated based on equipment costs and standard labor hours. Operations and Maintenance: This measure will slightly increase maintenance cost. The paddle fans require very little maintenance but do need annual cleaning and checking.


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MEGC8. Submetering: Existing Conditions: The sharing of electric meters among buildings makes accurate tracking of energy usage more difficult. Submeters at the building level would help track this data, but there are no energy savings from the meters themselves. This building shares its electric meter with the High School. Proposed Upgrades:

Install a submeter at the main switchgear serving the Elementary School. Savings Calculations: No energy savings are calculated for this measure. Implementation Costs: The estimated implementation cost for meter installation was provided by a meter equipment manufacturer. Operations and Maintenance: This measure would increase operations cost because the meter would have to be read manually.


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MEGC10. Variable Frequency Drives on Rooftop Units: Existing Conditions: The existing rooftop units have constant volume fans that supply air to the spaces. These fans are balanced by adjusting sheaves on the fan shaft Proposed Upgrades: Variable frequency drives (VFD’S) could be installed on the fans for the rooftop units. These fans will allow soft start of the fans and the fans could be balanced by changing the frequency of the variable drives. If the energy management system was implemented the variable frequency drives could be controlled by that system to save even greater amounts of energy. Savings Calculations: These calculations are for fixed speed adjustment only and are for one unit: Annual Energy Savings Estimator for VFD's on HVAC ApplicattionsCompares VFD capacity control versus other types capacity control.

To make Comparisons and Estimate Savings, need to know following:a. Motor horsepower.b. Cost of KwH of electricity.c. Total hours of operation per year.d. Present method of capacity control (guide vanes, fan curves, discharge vanes, control valves, etc.)

that VFD will replace.

Step 1 : Converting motor Horsepower to Kw2 HP x .746 = 1.492 KwA

Step 2 : Multiply the Adjustable Frequency Drive Power Ratio (from table below) times KwA from Step 1.0.73 Ratio x 1.492 KwA = 1.08916 KwB (using VFD)0.28

Step 3 : Multiply the Power Ratio of the presently employed control (see below) times KwA from Step 1. 0.88 Ratio x 1.492 KwA = 1.31296 KwC (method now employed)

Step 4 : Subtract Step 2 KwB from Step 3 KwC.1.31296 KwC

_ 1.08916 KwB = 0.2238 KwD (savings using VFD)

Step 5 : Multiply Step 4 KWD savings, times hours per year of operation, times cost of electricity per KwH.0.2238 KwD x 2000 Hrs x $ 0.095 $/KwH = $ 42.522 VFD Annual Calculated Savings

Fans at 90% of maximum flowRatio Flow Control Method0.73 Variable Frequency Drive0.88 Fan Curve

Total Savings = Savings Per Air Handler X Number of Air Handlers


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Implementation Costs: The estimated implementation costs for Variable Frequency Drive installation were calculated by an equipment supplier. Operations and Maintenance: This measure should reduce maintenance cost on the air handling units due to soft starts causing less wear and tear on the belts and motors.


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MEGC13. Window Upgrades: Existing Conditions: There are eight existing single glazed windows in the elementary wing. Loose-fitting, single-glazed windows are a major source of heat loss and gain. Old window frames and sash tend to be porous, admitting streams of outside air during both heating and cooling seasons. Aluminum frames are highly conductive to heat and cold. Proposed Upgrades: Replace the eight windows with double glazed windows with thermal break frames. Modern windows have superior weather-stripping and are much tighter. Modern windows offer better insulating value against heat, cold, UV radiation and noise. Savings Calculations:

ANNUAL ENERGY SAVINGS Units SavedKWH Saved Windows 205

MMBtu Saved Windows 20.00

Window Leakage Window LeakageHeating Savings Cooling Savings

% CFM Used 90% % CFM Used 10%Existing CFM 128 Existing CFM 128

BTU/Deg/CFM/hr 1.08 BTU/Deg/CFM/hr 1.08DEG/DIF.= 24.9 DEG/DIF.= 10

BTU/HR 3,088 BTU/HR 138Hours/Day 24.00 Hours/Day 24.00Days/ Year 140 Days/ Year 60

Total Hours / Year 3,360 Total Hours / Year 1,440MMBTU Savings 10.4 kWH Savings 58

Calculation of Crack Area

Work to be complet No. of Units Perimeter(ft)Crackage

(in) Conversion to feet Product

Windows 8 24 1/64 1/12 = 0.25000 1/32 1/12 = 0.0000

- 0 1/8 1/12 = 0.0000- 0 1/6 1/12 = 0.0000- 0 1/16 1/12 = 0.0000

Total = 0.25

Infiltration SavingsTotal Crack

Area(SF)

AverageWind Speed

(MPH)

AverageWind Speed

(FPM)

WindwardDiversity

(%)

InfiltrationSavings(CFM)

A B C =B x 5280 / 60 DE =

A x C x D0.25 11.6 1020.8 50% 127.600

Savings for R-value Improvement of WindowsWindow R-Value Window R-ValueHeating Savings Cooling Savings

Area (Sq Ft) 240 Area (Sq Ft) 240Existing 'U' Value 1 Existing 'U' Value 1

Proposed 'U' Value 0.4 Proposed 'U' Value 0.4Difference 0.6 Difference 0.6

Annual Heating Degree Days 3,482 Annual Cooling Degree Days 1,236Heating Efficiency 0.80 SEER 8.50

Diversity/safety factor 1.00 Diversity/safety factor 1.00MMBtu Savings 9.6 kWH Savings 147

Note: Avg winter outside air temp used to determine DEG/DIF is based on: (3482 degree days from METRIX)/(7 days/wk)/(20 wks/year) = 24.9 degree delta T.

65 degree F balance point (from METRIX) - 24.9.0 degree F = 40.1 Avg Outside Air Temp.

Average Wind Speed (Clovis AFB) = 11.6 MPH (Western Regional Climate Center)

Window Replacement


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Natural Gas Annual Savings = (Existing MMBTU – Proposed MMBTU) * Dollars/MMBTU = 20* $8.17 = $ 163.40 Electricity Annual Savings = (Existing kWh – Proposed kWh)*Dollars/kWh = 205*0.083 = $ 17.02 Total Annual Savings = Natural Gas Annual Savings + Electricity Annual Savings = $ 146.73

Implementation Costs: The estimated implementation costs for window replacements were provided by a building inspection firm. Operations and Maintenance: This measure does not impact operations and maintenance cost.


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G. CONCLUSIONS AND RECOMMENDATIONS The Melrose Elementary/OldGym/Student/Commons Building energy usage is low compared with other schools throughout the United States. The relatively mild weather and existing operating practices help lower energy costs. There is energy saving potential in upgrading the lighting system. Not only will this save energy, but it will improve the quality of the light. Occupancy sensors will keep lights off when areas are unoccupied, saving energy and prolonging the life of the system. The energy management system includes the front end computer and software that would be used by all the rest of the buildings in the school district. The domestic hot water tank insulation, computer power management solutions and Old Gym furnace return air repairs could be installed by District staff to reduce the overall cost of those measures. Energy conservation measures considered but not recommended may still present viable projects if the work is part of a planned renovation or if the specific pieces of equipment need extensive repairs or replacement. All paybacks were calculated assuming no increases in energy prices. Actual savings should exceed the simple payback savings over the life of the installed equipment and will help the District reduce the impact from anticipated rate escalations from energy providers.

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TECHNICAL ENERGY AUDIT REPORT · 2012. 3. 3. · The basis for any energy audit is the utility usage and cost for a known period of time. Below is a summary of the annual energy usage