San Diego City College Harry West Gymnasium Daylighting Retrofit

SAN DIEGO COMMUNITY COLLEGE DISTRICT

Gymnasium y Daylighting y g g Retrofit Harry West Gym – SD City College UC/CSU/CCC Sustainability Conference - June 22 22, 2009

David Umstot, PE Vice Chancellor Facilities Management 1

Learning Objective

The learner will identify y means to correct lighting illumination deficiencies with daylight harvesting and energy efficient lighting.

2

San Diego City College San Diego City College is uniquely situated nextt to t the th heart h t off downtown d t San S Diego, Di with close proximity to freeway access, public transportation and residential neighborhoods

3

San Diego City College Harry West Gymnasium The Harry West Gym first opened in October 2005. It h th has three regulation l ti b basketball k tb ll courts, t six i b badminton d i t courts, and three volleyball courts. It can accommodate up to 2 2,000 000 spectators spectators.

4

Harry West Gymnasium Existing Conditions The footcandle lighting at the floor level was half of what was needed for collegiate sports.

5

Harry West Gymnasium Proposed Corrections To achieve recommended lighting levels, a daylighting retrofit was proposed to replace 400-watt High Intensity Discharge (HID) fixtures with six-bulb T-5 High Output fi t fixtures and d install i t ll natural t ld daylight li ht h harvesting ti fifixtures. t

6

Harry West Gymnasium Proposed Corrections Daylighting Project 

Remove 40 750-watt HID fixtures



Replace with 20 sixbulb T-5 fixtures and 20 daylight harvesting fixtures

Annual kWh Savings 116 316 kWh 116,316 7

Harry West Gymnasium Retrofit 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 energy-efficient 8

Harry West Gymnasium Daylighting Retrofit Retrofit efforts began in November 2008 with installation of the T-5 lights and electronic ballasts.

9

Harry West Gymnasium Daylighting Retrofit The installation of 20 skylights was completed in April 2009.

10

Harry West Gymnasium Retrofit Energy Savings

11

Harry West Gymnasium Lighting Levels Pre-existing lighting conditions using 400-watt High Intensity Discharge (HID) fixtures

12

Harry West Gymnasium Lighting Levels Footcandle reading using daylight harvest fixtures only

13

Harry West Gymnasium Lighting Levels Footcandle reading after retrofit of 6L-T5 fixtures only

14

Harry West Gymnasium Lighting Levels How do they compare?

Pre-existing levels

Daylight Harvest

Retrofit of T5 fixtures

15

Harry West Gymnasium Cost of Implementation

16

Harry West Gymnasium Projected Cost Savings Annually

17

Harry West Gymnasium CO2 Savings Estimated 261,427 lbs. of CO2 reduced annually That’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 fixture

18

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.

Š San Diego Community College District 2009 Š Daylight Inside 2009

19

Questions

David Umstot, PE Vice Chancellor, Facilities Management San Diego Community College District 3375 Camino del Rio South San Diego, CA 92108 619.388.6546 dumstot@sdccd.edu www.sdccd.edu 20