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Analysis of the screening of hydrogen flares and flames thermal radiation with water sprays
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Dembele, Siaka and Wen, Jennifer X. (2014) Analysis of the screening of hydrogen flares and flames thermal radiation with water sprays. International Journal of Hydrogen Energy, Volume 39 (Number 11). pp. 6146-6159. doi:10.1016/j.ijhydene.2013.08.088 ISSN 0360-3199.
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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2013.08.088
Abstract
Water spray screening is a mitigation technique to reduce thermal radiation from flames to acceptable levels required by safety regulations. The current literature on water screening is limited to hydrocarbon flames. The main goal of the present study is to bridge this knowledge gap by presenting a methodology to predict the water spray screening performance of hydrogen flames using their actual emission spectra. A wide range of hydrogen flames and water screen scenarios are investigated. The results show that although hydrogen flames' emissivities are relatively lower than hydrocarbons', the radiated heat could pose safety risks and water screening is an effective mitigating method. The study further analyses the total transmissivity of water screens calculated from (i) the actual hydrogen spectrum and (ii) a blackbody spectrum. For optically thick spray screens, the blackbody spectrum widely used for hydrocarbon flames screening, could yield unacceptable overestimations of the total transmissivity.
Item Type: | Journal Article | ||||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||
Journal or Publication Title: | International Journal of Hydrogen Energy | ||||||||||
Publisher: | Elsevier BV | ||||||||||
ISSN: | 0360-3199 | ||||||||||
Official Date: | 4 May 2014 | ||||||||||
Dates: |
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Volume: | Volume 39 | ||||||||||
Number: | Number 11 | ||||||||||
Page Range: | pp. 6146-6159 | ||||||||||
DOI: | 10.1016/j.ijhydene.2013.08.088 | ||||||||||
Status: | Peer Reviewed | ||||||||||
Publication Status: | Published | ||||||||||
Access rights to Published version: | Restricted or Subscription Access |
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