Visit the Energy Systems Laboratory Homepage.
Calculating Energy and Demand Retrofit Savings for Stroman High School: Interim Report
MetadataShow full item record
As part of the LoanSTAR program, Stroman High School in Victoria Texas underwent two retrofits: a) an absorption chiller was changed to an electric vapor compression chiller, and b) an EMCS system was installed after about 5 months in the post retrofit period. Moreover, retrofit savings calculation was complex since pre-retrofit data consisted only of monthly utility data while hourly monitored data are available for the post-retrofit period. The retrofit savings in electricity and gas were computed by two different approaches: Unnormalized Utility Bill Comparison and Weather and Schedule Normalized Utility Bill Comparison Using Post-Retrofit Daily Models. (For purpose of simplicity, in this report, we will refer them as Level-0 and Level-1, respectively.) This report describes these approaches and discusses how well the retrofit savings predicted by both approaches compare with each other. It also describes the procedure for determining demand savings.
Liu, Y.; Reddy, T. A.; Katipamula, S.; Claridge, D. E. (1992). Calculating Energy and Demand Retrofit Savings for Stroman High School: Interim Report. Energy Systems Laboratory (http://esl.tamu.edu), Texas A&M University; Department of Mechanical Engineering, Texas A&M University. Available electronically from