Minimum safe standoff distance for protection from bushfire radiation by commercial metal meshes

Sharifian, Ahmad and Buttsworth, David R. (2007) Minimum safe standoff distance for protection from bushfire radiation by commercial metal meshes. In: 8th Australasian Heat and Mass Transfer Conference, 26-29 Jul 2005, Curtin University of Technology, Perth, Western Australia.

Abstract

[Abstract]: For building constructions in bushfire-prone areas, the relevant Australian Standard (AS 3959-1999) recommends that potential building openings be protected against flying debris and burning embers using a metal mesh with an opening less than 1.8 mm. Although the metal mesh can reduce the radiant heat transfer, it can also create hot spots on the object it is intended to protect, particularly if the standoff distance between the mesh and the object is small. These hot spots may even have a higher temperature than the object temperature without metal mesh protection. In this paper, the performance of some commercial metal meshes is simulated and the minimum standoff distance needed to avoid hot spots on the surface of the object is determined. An approximate formula for the calculation of this minimum distance is proposed.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Awaiting copyright advice.
Depositing User: Assoc Prof David Buttsworth
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 23 Jan 2008 05:31
Last Modified: 02 Jul 2013 22:54
Uncontrolled Keywords: bushfire protection, radiation, heat transfer
Fields of Research (FOR2008): 09 Engineering > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified
11 Medical and Health Sciences > 1117 Public Health and Health Services > 111705 Environmental and Occupational Health and Safety
URI: http://eprints.usq.edu.au/id/eprint/3607

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