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Author: Allan Daly School: UC Berkeley/Stanford
University
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| Abstract: In 1993, a student-conceived comprehensive lighting retrofit was performed in
the Terman Engineering Center at Stanford University. The project proposal anticipated a
46 percent reduction in energy used for lighting, which translates to a 23 percent overall
reduction in electricity use for the building. In a quick analysis done after project
completion, the retrofit designers calculated electricity savings at 21 percent. This study takes a more in-depth look at the energy savings resulting from the retrofit. It examines almost 6 years worth of electricity use data for Terman as well as investigating one area where the retrofit is not living up to expectations. This study concludes that the original analysis slightly underestimated the amount of electricity saved by the retrofit. This more thorough analysis puts electricity savings for Terman at around 24 percent— a significant reduction in energy use. In addition, this report identifies one possible reason for smaller-than-possible savings—occupants are not using part of the lighting system in the intended manner. As part of the retrofit, 50 offices were equipped with daylighting in order to offset some electric lighting. The field study included in this report shows that the daylighting system is not being used effectively. |
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Background: Allan Daly was in the Master of Science Program in Building Science at the College of Environmental Design at UC Berkeley when he conducted this study. He graduated in May of 1998. |
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All contents copyright (C) 1998. Vital Signs Project. All rights reserved. Created: 11/11/98 |
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Lighting Retrofit
at Stanford University's Terman Engineering Center
