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Flame inhibition by calcium compounds: Effects of calcium compounds on downward flame spread over solid cellulosic fuel
http://hdl.handle.net/10131/00012830
http://hdl.handle.net/10131/000128303e82ed1f-2903-45c7-819c-2405a77ca970
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
Flame inhibition by calcium compounds Effects of calcium compounds on downward flame spread over solid cellulosic fuel.pdf (1.5 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2019-12-04 | |||||
| タイトル | ||||||
| タイトル | Flame inhibition by calcium compounds: Effects of calcium compounds on downward flame spread over solid cellulosic fuel | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Calcium compound | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Combustion inhibition | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Fire suppression | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Minimum extinction concentration | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Phosphorus free | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Fire extinguishing agent | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 著者 |
Koshiba, Yusuke
× Koshiba, Yusuke× Haga, Takuya× Ohtani, Hideo |
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| 著者所属 | ||||||
| 値 | Department of Materials Science and Chemical Engineering, Faculty of Engineering, Yokohama National University | |||||
| 著者所属 | ||||||
| 値 | Graduate School of Environmental and Information Sciences, Yokohama National University | |||||
| 著者所属 | ||||||
| 値 | Department of Safety Management, Faculty of Environmental and Information Sciences, Yokohama National University | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Owing to depletion risks and the rising cost of phosphate rock, phosphorus-free fire-extinguishing agents are in growing demand. This paper aims to develop a new fire suppressant that does not use phosphates and reports the flame-inhibition properties of calcium compounds: calcium acetylacetonate (Ca(acac)2), calcium acetate (Ca(OAc)2), calcium hydroxide (Ca(OH)2), calcium carbonate (CaCO3), calcium nitrate (Ca(NO3)2), and calcium oxide (CaO). Their flame-inhibition capabilities were evaluated by measuring the downward flame-spread rates over cellulosic fuels on which each calcium compound was adsorbed. Suppression experiments demonstrated that Ca(acac)2, Ca(OAc)2, Ca(OH)2, and CaCO3 extinguished flames. Ca(OAc)2 and Ca(acac)2 were more effective by factors of approximately 1.6 and 1.4, respectively, than ammonium dihydrogen phosphate. To elucidate the influences of the calcium compounds on the pyrolysis of cellulose and char combustion, the activation energy (E) and pre-exponential factor (A) associated with the pyrolysis of cellulose and the char yield (Y) were determined by kinetic analyses involving thermogravimetric measurements. The kinetic analysis permitted us to conclude that none of the calcium compounds hindered cellulose pyrolysis or char combustion. A positive correlation between the bond energy of the compound and minimum extinction concentrations was found, thus suggesting that compounds that easily release atomic calcium effectively inhibit flames. | |||||
| 書誌情報 |
Fire Safety Journal 巻 109, p. 102865, 発行日 2019-10 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 03797112 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00194150 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1016/j.firesaf.2019.102865 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| 関係URI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1016/j.firesaf.2019.102865 | |||||
| 関連名称 | https://doi.org/10.1016/j.firesaf.2019.102865 | |||||
