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首页> 外文期刊>International journal of hydrogen energy >Application of thermal mechanism to evaluate the effectiveness of the extinguishment of CH4/air cup-burner flame by water mist with additives
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Application of thermal mechanism to evaluate the effectiveness of the extinguishment of CH4/air cup-burner flame by water mist with additives

机译：应用热机理评估水雾与添加剂扑灭CH4 /空气杯燃烧器火焰的有效性

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摘要

A cup burner was used to measure the minimum fire extinguishing concentrations for methane extinguishment by fine water mist with additives/air co-flow diffusion flames based on ultrasonic atomization. The comparison of the minimum fire extinguishing concentrations of pure and fine water mist revealed that the existence of additives could change the fire extinguishing efficiency of pure water, with their improvement effect ranked as KCl > KH2PO4 > NH4H2PO4. A flame thermal balance equation was established, and a model for predicting the minimum fire extinguishing concentrations of different fire extinguishing agents was developed. A differential scanning calorimeter was used to measure solution heat capacity, and the physicochemical properties of different liquid extinguishers were predicted. When the mass fractions of the additives equated to 2%, the chemical fire extinguishing effect was superior. The influence of additives on fire extinguishing efficiency mainly involves an increase in chemical actions and a reduction in the competition between the evaporative capacities of pure water. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
机译：使用杯形燃烧器来测量基于超声雾化的带有添加剂/空气同流扩散火焰的细水雾扑灭甲烷的最低灭火浓度。通过对纯净水和细水雾的最低灭火浓度的比较发现，添加剂的存在可以改变纯水的灭火效率，其改善效果为KCl> KH2PO4> NH4H2PO4。建立了火焰热平衡方程，建立了预测不同灭火剂最小灭火浓度的模型。使用差示扫描量热仪测量溶液的热容量，并预测了不同液体灭火器的理化性质。当添加剂的质量分数等于2％时，化学灭火效果优异。添加剂对灭火效率的影响主要包括化学作用的增加和纯水蒸发能力之间竞争的减少。 （C）2016氢能出版物有限公司。由Elsevier Ltd.出版。保留所有权利。

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  • 来源
    《International journal of hydrogen energy》 |2016年第33期|15078-15088|共11页
  • 作者

    Zhang Tianwei; Han Zhiyue; Du Zhiming; Zhang Zelin; Liu Kai;

  • 作者单位

    Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 10081, Peoples R China|Chinese Peoples Armed Police Forces Acad, Langfang 065000, Hebei, Peoples R China;

    Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 10081, Peoples R China;

    Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 10081, Peoples R China;

    Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 10081, Peoples R China;

    Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 10081, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Thermal mechanism; Cup burner; Heat capacity; DSC; Physical action; Chemical action;

    机译：热力学;杯形燃烧器;热容量;DSC;物理作用;化学作用;

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