Ambient-Temperature Regression Analysis for Estimating Retrofit Savings in Commercial Buildings
- 1 August 1998
- journal article
- Published by ASME International in Journal of Solar Energy Engineering
- Vol. 120 (3), 168-176
- https://doi.org/10.1115/1.2888066
Abstract
This paper describes a procedure for estimating weather-adjusted retrofit savings in commercial buildings using ambient-temperature regression models. The selection of ambient temperature as the sole independent regression variable is discussed. An approximate method for determining the uncertainty of savings and a method for identifying the data time scale which minimizes the uncertainty of savings are developed. The appropriate uses of both linear and change-point models for estimating savings based on expected heating and cooling relationships for common HVAC systems are described. A case study example illustrates the procedure.Keywords
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