Experimental measurement of direct thermal radiation through single-layer square-cell plain woven screens
Article
Article Title | Experimental measurement of direct thermal radiation through single-layer square-cell plain woven screens |
---|---|
ERA Journal ID | 3781 |
Article Category | Article |
Authors | Hashempour, Javad (Author), Sharifian, Ahmad (Author) and Billingsley, John (Author) |
Journal Title | Journal of Heat Transfer: Transactions of the ASME |
Journal Citation | 138 (1), pp. 012701-1-012701-6 |
Article Number | 012701 |
Number of Pages | 6 |
Year | 2016 |
Place of Publication | New York, United States |
ISSN | 0022-1481 |
1528-8943 | |
Digital Object Identifier (DOI) | https://doi.org/10.1115/1.4031110 |
Web Address (URL) | http://heattransfer.asmedigitalcollection.asme.org/article.aspx?articleid=2411195 |
Abstract | Australian bushfires have killed many people and caused severe damage; like as any other type of disaster. Previous studies have identified direct flame contact and radiant heat as the main cause of fatalities.The role of screens in limiting the radiation exposure on an object by fire on the other side of the screen is well-known, but still it has not been experimentally determined. A screen between a radiation source and an object divides the radiant heat flux into two parts. The first part is direct radiant heat flux that passes directly through the screen without any interaction. The second part is indirect radiation heat flux, which includes both emitted and reflected radiant heat fluxes by the heated screen. This experimental study deals with the direct radiant heat flux, which depends on the screen porosity and is independent of the material composition or the surface quality of the screen. The experimental results of four square cell,plain woven screens with porosities ranging from 41% to 66% show that the passing ratios of direct radiant heat flux through screens are less than those suggested by their porosity. Four empirical equations have been developed to determine the passing ratio of the direct radiation through screens, and tunnel vision angles of the screens. |
Keywords | bushfire, fire radiation, tunnel vision, woven wire screens, view factor, shape factor, wildland fire, wire mesh. |
ANZSRC Field of Research 2020 | 401703. Energy generation, conversion and storage (excl. chemical and electrical) |
410402. Environmental assessment and monitoring | |
419999. Other environmental sciences not elsewhere classified | |
401799. Mechanical engineering not elsewhere classified | |
401001. Engineering design | |
401205. Experimental methods in fluid flow, heat and mass transfer | |
300706. Forestry fire management | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Computational Engineering and Science Research Centre |
School of Mechanical and Electrical Engineering | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2zxx/experimental-measurement-of-direct-thermal-radiation-through-single-layer-square-cell-plain-woven-screens
1903
total views16
total downloads0
views this month0
downloads this month