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Cooling-Only Prism Analysis of Eleven College Station Homes and Interpretation of Building Physical Parameters
Abstract
A cooling-only PRISM analysis has been
performed on eleven new residences in College
Station using electricity billing data over an entire
year. This study revealed that, provided one corrects
for effects such as vacation periods, erroneous utility
meter readings and abnormal occupancy patterns
during holiday periods, the PRISM approach can
accurately model whole-building electricity use (R^2 in
the range of 0.92 to 0.99). The physical interpretation
of the building parameters determined by PRISM has
also been evaluated against continuous measurements
of indoor temperature and air-conditioned electricity
consumption made during the summer as part of
another study. We find that the PRISM estimates for
balance point temperature are within a few degrees of
actually "measured" values and seem to be unbiased.
The PRISM estimates for base-load consumption. on
the other hand, are consistently higher by 50% to
100% of the measured base-loads, and factors which
may contribute to this bias have also been briefly
discussed.
Citation
Griffith, L.; Reddy, T. A.; Claridge, D. E. (1994). Cooling-Only Prism Analysis of Eleven College Station Homes and Interpretation of Building Physical Parameters. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /6644.