Correlations for the maximum transient non-periodic indoor heat flow through 15 typical walls

K.A. Antonopoulos and F. Democritou

Energy, 1993, vol. 18, issue 7, 705-715

Abstract: The usual practice of assuming periodic outdoor conditions for calculation of the transient wall heat flow in air-conditioning load calculations leads to considerable errors in the case of a significant temporary deviation of the outdoor air temperature from periodicity. In the present work, which is based on a finite-difference solution of the transient non-periodic wall heat-conduction problem, we develop a very simple correlation for calculation of the increase of the maximum indoor heat flow Δq caused by a temporary rise of the outdoor air temperature in 15 typical wall constructions. For each one of these, the correlation expresses Δq in terms of temperature-deviation duration, of mean temperature difference and of amplitude difference of the temperature oscillations during and before the deviation from periodicity.

Date: 1993
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:18:y:1993:i:7:p:705-715

DOI: 10.1016/0360-5442(93)90030-H

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