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Determination of Retrofit Savings Using a Calibrated Building Energy Simulation Model
Abstract
This paper presents the development of a
methodology to determine retrofit energy savings in
buildings when few measured preretrofit data are
available. Calibration of the DOE-2 building energy
analysis computer program for a 250,000 ft2 building
at The University of Texas at Austin, using hourly
data for a two-month preretrofit period, is detailed..
The process begins with the identification of the
DOE-2 input parameters having the greatest
uncertainty. Field measurements then determine
those uncertain parameters that have a significant
impact on total energy use. Finally, the few
remaining parameters are systematically adjusted to
match the preretrofit data. Using the calibrated
model run for the postretrofit period, energy savings
were calculated for whole-building electric, cooling,
and heating energy use, and were compared with
savings calculated using a regression model
developed under the LoanSTAR program. Finally, to
validate the model, postretrofit DOE-2 results were
compared with measured postretrofit data for a seven-month
period.
Citation
Reddy, S. N.; Hunn, B. D.; Hood, D. B. (1994). Determination of Retrofit Savings Using a Calibrated Building Energy Simulation Model. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /6641.