The energy performances of 20 commercial buildings, covering the common typ
es found in Hong Kong, have been studied. The monthly electricity billing d
ata as well as the results from computer modeling were analyzed. Energy sig
natures for the commercial buildings were found by a method similar to PRIS
M, Correlation equations of energy use with building envelope parameters, s
uch as OTTV, building size, envelope heat gain, and the annual chiller-load
were derived. The results are useful for building envelope design. energy
audit, and legislative control of energy use in commercial buildings. (C) 2
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