Comprehensive Room Transfer Functions for Efficient Calculation of the Transient Heat Transfer Processes in Buildings

[+] Author and Article Information
J. E. Seem, S. A. Klein, W. A. Beckman, J. W. Mitchell

Solar Energy Laboratory, University of Wisconsin–Madison, Madison, WI 53706

J. Heat Transfer 111(2), 264-273 (May 01, 1989) (10 pages) doi:10.1115/1.3250673 History: Received November 20, 1987; Online October 20, 2009


This paper describes a method in which the transfer functions describing heat flows in building elements can be combined into a single transfer function for an enclosure, referred to as a comprehensive room transfer function (CRTF). The method accurately models long-wave radiation exchange and convection in an enclosure through an approximate network, referred to as the “star” network. Resistances in the star network are determined from a network that uses view factors to model long-wave radiation exchange. The Padé approximation and bilinear transformation are used to reduce the number of coefficients in a CRTF.

Copyright © 1989 by ASME
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