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RESEARCH PAPERS

Interzonal Natural Convective Heat and Mass Flow Through Doorway-Like Apertures in Buildings: Experimental Results

[+] Author and Article Information
M. N. A. Said, S. A. Barakat, E. A. Whidden

Institute for Research in Construction, National Research Council Canada, Ottawa, Ontario, K1A 0R6, Canada

J. Sol. Energy Eng 115(2), 69-76 (May 01, 1993) (8 pages) doi:10.1115/1.2930034 History: Received June 01, 1992; Revised December 01, 1992; Online June 06, 2008

Abstract

This paper presents the results of full-scale experiments in a realistic building to evaluate natural convective heat and mass transfer through doorway-like apertures under small temperature differentials. The zone-to-zone temperature differences were nominally between 1°C and 2.5°C. Heat transfer correlations, coefficient of discharge, and thermal stratification are reported for air (Pr = 0.71), an enclosure aspect ratio of 0.26, aperture height relative to the enclosure height in the range of 0.75 to 1, and aperture width relative to the enclosure width in the range 0.29 to 0.79. In general, the results extends the validity of previous theoretical and experimental work in the literature to large doorway-like apertures and small temperature differentials across the aperture typical of residential building conditions.

Copyright © 1993 by The American Society of Mechanical Engineers
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