Page 1 Peng Xu, Philip Haves, James Braun, MaryAnn Piette January 23, 2004 Sponsored by the California Energy Commission and the California Institute for Energy Efficiency A Case Study of Precooling with Zone Temperature Reset in a Commercial Office Building
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Page 1 Peng Xu, Philip Haves, James Braun, MaryAnn Piette January 23, 2004 Sponsored by the California Energy Commission and the California Institute for.
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Page 1
Peng Xu, Philip Haves, James Braun, MaryAnn Piette
January 23, 2004Sponsored by the California Energy Commission and
the California Institute for Energy Efficiency
A Case Study of Precooling with Zone
Temperature Reset in a Commercial Office
Building
Page 2
Outline
• Aim
• Test site description
• Precooling and demand shedding strategies
• Test results
• Utility analysis
• Conclusions and future work
Page 3
Aim
Demonstrate the potential for reducing peak-period electrical demand in a moderate-weight commercial building using building structural mass.
Page 4
Executive Summary
• Precooling and zone temperature reset can shift up to 100% of cooling power from on- to off-peak in a moderate-weight commercial buildings
• Electricity peak demand reduced by as much as 2.3 W/ft2
• Potential for cost savings when combined with Critical Peak Pricing
Page 5
Case Study - Introduction
• Started in August 2003
• Purpose - preliminary study to assess potential and need for further work– Potential demand reduction/load shifting in
moderate-weight buildings– Effectiveness of precooling and zone
temperature reset – Thermal comfort
Page 6
Test Site Description• Medium-sized government building