Demand Shifting With Thermal Mass in Large Commercial Buildings: Case Studies and Tools

Speaker(s): 
Date: 
March 9, 2007 - 12:00pm
Location: 
90-3122

The idea of pre-cooling and demand limiting is to pre-cool buildings at night or in the morning during off-peak hours, storing cooling energy in the building thermal mass and thereby reducing cooling loads during the peak periods. Savings are achieved by reducing on-peak energy and demand charges. The potential for utilizing building thermal mass for load shifting and peak demand reduction has been demonstrated in a number of simulation, laboratory, and field studies. Case studies in a number of office buildings in California has found that a simple demand limiting strategy reduced the chiller power by 20-100% (0.5–2.3W/ft2) during six hour peak demand period without causing any thermal comfort complaints, depending on locations, building types, and demand shifting strategies. This seminar will describes the results of these case studies and the development of an assessment tool to predict the saving potentials. For more information about this seminar, please contact: Peng Xu(510) 486-4549

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