Paper Conference

Proceedings of Building Simulation 2011: 12th Conference of IBPSA


Modeling Of Heat Transfer In Rooms In The Modelica “Buildings” Library

Michael Wetter, Wangda Zuo, Thierry Stephane Nouidui

Abstract: This paper describes the implementation of the room heat transfer model in the free open-source Modelica “Buildings” library. The model can be used as a single room or to compose a multizone building model. We discuss how the model is decomposed into submodels for the individual heat transfer phenomena. We also discuss the main physical assumptions. The room model can be parameterized to use different modeling assumptions, leading to linear or non-linear differential algebraic systems of equations. We present numerical experiments that show how these assumptions affect computing time and accuracy for selected cases of the ANSI/ASHRAE Standard 1402007 envelop validation tests.
Pages: 1096 - 1103