SAN DIEGOCOMMUNITY COLLEGE DISTRICT

Gymnasium Daylighting RetrofitGymnasium Daylighting RetrofitCOMMUNITY COLLEGE DISTRICT

y y g gy y g gHarry West Gym Harry West Gym –– SD City College SD City College

UC/CSU/CCC Sustainability ConferenceUC/CSU/CCC Sustainability Conference June 22 2009June 22 2009UC/CSU/CCC Sustainability Conference UC/CSU/CCC Sustainability Conference -- June 22, 2009June 22, 2009

David Umstot, PEDavid Umstot, PEVice ChancellorVice Chancellor

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Vice ChancellorVice ChancellorFacilities ManagementFacilities Management

Learning Objective

The learner will identify meansyto correct lighting illumination deficiencies with daylight harvestingdeficiencies with daylight harvestingand energy efficient lighting.

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San Diego City College

San Diego City College is uniquely situated t t th h t f d t S Dinext to the heart of downtown San Diego,

with close proximity to freeway access, public transportation and residential neighborhoodstransportation and residential neighborhoods

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San Diego City CollegeHarry West GymnasiumHarry West Gymnasium

The Harry West Gym first opened in October 2005. It h th l ti b k tb ll t i b d i thas three regulation basketball courts, six badmintoncourts, and three volleyball courts. It can accommodate up to 2 000 spectatorsup to 2,000 spectators.

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Harry West GymnasiumExisting ConditionsExisting Conditions

The footcandle lighting at the floor level was half of whatwas needed for collegiate sports.

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Harry West GymnasiumProposed CorrectionsProposed Corrections

To achieve recommended lighting levels, a daylightingretrofit was proposed to replace 400-watt High Intensity Discharge (HID) fixtures with six-bulb T-5 High Outputfi t d i t ll t l d li ht h ti fi tfixtures and install natural daylight harvesting fixtures.

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Harry West GymnasiumProposed CorrectionsProposed Corrections

Daylighting Project

Remove 40 750-watt HID fixtures

Replace with 20 six-bulb T-5 fixtures and 20 daylight harvestingdaylight harvesting fixtures

Annual kWh Savings

116 316 kWh

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116,316 kWh

Harry West GymnasiumRetrofit AdvantagesRetrofit Advantages

Savings of between $17 – 18K annually for electricity

Significantly improve lighting levels and lighting quality during both daytime and evening hours

Reduction of replacement costs for materials and labors by approximately 50%

Ability to take advantage of$12K in incentive rebates offered by San Diego Gas & Electric for this energy efficient solution

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energy-efficient solution

Harry West GymnasiumDaylighting RetrofitDaylighting Retrofit

Retrofit efforts began in November 2008 with installationof the T-5 lights and electronic ballasts.

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Harry West GymnasiumDaylighting RetrofitDaylighting Retrofit

The installation of 20 skylights was completed in April 2009.

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Harry West GymnasiumRetrofit Energy SavingsRetrofit Energy Savings

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Harry West GymnasiumLighting LevelsLighting Levels

Pre-existing lighting conditions using 400-watt HighIntensity Discharge (HID) fixtures

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Harry West GymnasiumLighting LevelsLighting Levels

Footcandle reading using daylight harvest fixtures only

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Harry West GymnasiumLighting LevelsLighting Levels

Footcandle reading after retrofit of 6L-T5 fixtures only

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Harry West GymnasiumLighting LevelsLighting Levels

How do they compare?Pre-existing levels Daylight Harvest Retrofit of T5 fixtures

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Harry West GymnasiumCost of ImplementationCost of Implementation

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Harry West GymnasiumProjected Cost Savings AnnuallyProjected Cost Savings Annually

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Harry West GymnasiumCO2 SavingsCO2 Savings

Estimated 261,427 lbs. of CO2 reduced annuallyThat’s the equivalent of removing 22 cars from San Diego

roads every year, or about 440 cars over the 20-year life-cycle of each daylight harvesting fixturelife-cycle of each daylight harvesting fixture

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Copyright Materials

This presentation is protected by US and International Copyright laws.

Reproduction, distribution, display and use of the presentation without written permission of the speaker is prohibited.

© San Diego Community College District 2009

© Daylight Inside 2009

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Questions

David Umstot, PEVice Chancellor, Facilities ManagementSan Diego Community College District

3375 Camino del Rio SouthSan Diego, CA 92108

619.388.6546dumstot@sdccd.edu

www.sdccd.edu

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www.sdccd.edu