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ICHMT DIGITAL LIBRARY ONLINE

ISSN 961-91393-0-5

Individual price:

$246.00 (Must be sent to your home address)

You can order single issue or individual article. To purchase a single issue or an individual article as well as to view tables of contents and abstracts click on issue number.

Institutional price:

$518.00

Volumes per year:

various

For Online Access

Year 2005

• 18th Australasian Heat and Mass Transfer Conference
Curtin University of Technology, Perth, Western Australia, 26-29 July 2005

239 pages

Volume price - $518.00

Minimum Safe Standoff Distance for Protection from Bushfire Radiation by Commercial Metal Meshes

Ahmad Sharifian
University of Southern Queensland (USQ), Toowoomba, QLD, 4350, Australia

David Buttsworth
University of Southern Queensland (USQ), Toowoomba, QLD, 4350, Australia

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.