Paper Conference

Proceedings of SimBuild Conference 2012: 5th conference of IBPSA USA


Comparison of EnergyPlus and DOE-2 Detailed Window Heat Transfer Models

Neal Kruis, Chuck Booten, Craig Christensen
National Renewable Energy Laboratory, Golden, CO

Abstract: Two commonly used building energy simulation engines, EnergyPlus and DOE-2, can differ significantly in their calculations of window heating load. In this paper, the authors identify the issues in the window heat transfer algorithms used in detailed window models, and provide suggested changes to make the calculations more accurate. We estimate that up to 82% of the observed differences can be resolved through the suggested changes. The methodology employed for this investigation involved programming the algorithms from the respective simulation engines in the Engineering Equation Solver (EES) so that the impact of each proposed change could be investigated and quantified independently.
Pages: 537 - 544