Paper Conference

Proceedings of eSim 2014: 8th Conference of IBPSA-Canada


A case study in actual building performance and energy modeling with real weather data

Cherag Mehta, Alan S. Fung

Abstract: Building energy simulation is a critical component in the process of designing an energy efficient building to predict annual energy consumption. Majority of these buildings, however, have what is known as a performance gap where the building consumes more energy than originally predicted. In order to analyze the potential performance gap, a case study approach has been adopted. This paper seeks to answer how does actual energy consumption of a University Building compare with energy consumption prediction using eQuest? The results show that the predicted electricity consumption to be within 0.72% of actual on an annual basis. However, natural gas consumption is more erratic and has fluctuating monthly differences, with an overall annual average ranging, 4.5% to 16%. Areas future work would seek to gather data over a longer period and install a weather station on the building to generate sitespecific weather data.
Pages: 15 - 28