Building simulation tools for retrofitting residential structures

Abstract

This article evaluates the energy performance of a single family home using three widely used industry standard simulation packages in the United States—REM Design, Energy Gauge, and Treat. It discusses the results of each simulation run and the reasons for variations in the results. The inputs for each of the three different simulation tools are heating, cooling, and water heating loads; building shell features; air leakage; and electric consumption. The article highlights the differences in data input for the three packages and analyzes which parameters create the most variation among the results. It also underscores areas where improvements can be made to the capabilities offered by the tools and to the entities used to define simulation models. Relevant standards and guidelines for building simulation are needed such that variations in modeling and analysis can be accounted for and building energy performance can be quantified with increased accuracy and precision. © Energy Engineering. All rights reserved.