Correlating and predicting the air infiltration through the cracks of suspended timber floors

McGrath, PT and Lai, E, 2001. Correlating and predicting the air infiltration through the cracks of suspended timber floors. Architectural Science Review, 44 (2), pp. 173-180. ISSN 0003-8628

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Abstract

This paper shows that the visible gap length may be used as a physical parameter when correlating pressure difference to volume flow rate (or air velocity) through the cracks between floorboards and can be termed the Equivalent Crack Length. The crack widths, which previously have been determined separately from the edge effect coefficient and the laminar flow coefficient, were significantly different. When analysed graphically they can be shown to correlate by an empirical relationship. A generalised equation is proposed that, in conjunction with the empirical relationship, allows predictions to be made of the volume flow rate through the cracks between floorboards for a known pressure difference.

Item Type:	Journal article
Publication Title:	Architectural Science Review
Creators:	McGrath, P.T. and Lai, E.
Publisher:	Earthscan
Date:	2001
Volume:	44
Number:	2
ISSN:	0003-8628
Divisions:	Schools > School of Science and Technology
Record created by:	EPrints Services
Date Added:	09 Oct 2015 10:25
Last Modified:	19 Oct 2015 14:32
URI:	https://irep.ntu.ac.uk/id/eprint/12814

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