MISC

2005年5月

Burning velocity measurement of fluorinated compounds by the spherical-vessel method

COMBUSTION AND FLAME
  • K Takizawa
  • ,
  • A Takahashi
  • ,
  • K Tokuhashi
  • ,
  • S Kondo
  • ,
  • A Sekiya

141
3
開始ページ
298
終了ページ
307
記述言語
英語
掲載種別
DOI
10.1016/j.combustflame.2005.01.009
出版者・発行元
ELSEVIER SCIENCE INC

Burning velocity has been measured using the spherical-vessel (SV) method for four hydrofluorocarbons (HFCs), i.e., difluorornethane (HFC-32), 1,1,2-trifluoroethane (HFC- 143), 1, 1, 1 -trifluoroethane (HFC- 143a), and 1,1-difluoroethane (HFC-152a). Experiments were conducted for initial pressures in the range 78-108 kPa and initial temperatures in the range 280-330 K, over wide ranges of HFC-air equivalence ratios. The burning velocities were determined from the rate of pressure increase by applying a spherical-flame propagation model. Flame propagation behavior was observed in a cylindrical vessel equipped with optical windows by employing schlieren photography. It was found that the values of burning velocity derived from the spherical-vessel method are in good agreement with the ones obtained with schlieren method. It is found that the SV method is adequate for determining the burning velocity for weakly flammable HFCs as well as for moderately flammable compounds. The burning velocity of each HFC was obtained as a function of temperature, pressure, and equivalence ratio. The maximum burning velocities of FIFC-32, HFC-143, HFC- 143a, and HFC-152a were determined to be 6.7, 13.1, 7.1, and 23.6 cm s(-1), respectively. The maximum burning velocity occurred for slightly fuel-rich concentrations. The magnitude of the burning velocity is strongly dependent on the ratio of H atoms to F atoms in the HFC molecules. © 2005 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

Web of Science ® 被引用回数 : 83

リンク情報
DOI
https://doi.org/10.1016/j.combustflame.2005.01.009
CiNii Articles
http://ci.nii.ac.jp/naid/80017379451
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000228987100010&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/j.combustflame.2005.01.009
  • ISSN : 0010-2180
  • CiNii Articles ID : 80017379451
  • Web of Science ID : WOS:000228987100010

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