Experimental Study of the Effect of Confining on the Development of Fire in a Closed Compartment

IF 1.5 Q3 ENGINEERING, CHEMICAL

Journal of Combustion Pub Date : 2021-02-12 DOI:10.1155/2021/6662830

Fidel Meskéoulé Vondou, Claude Valery Ngayihi Abbe, J. Zaida, Philippe Onguene Mvogo, R. Mouangue

{"title":"Experimental Study of the Effect of Confining on the Development of Fire in a Closed Compartment","authors":"Fidel Meskéoulé Vondou, Claude Valery Ngayihi Abbe, J. Zaida, Philippe Onguene Mvogo, R. Mouangue","doi":"10.1155/2021/6662830","DOIUrl":null,"url":null,"abstract":"Backdraft is a complex phenomenon which occurs during cases of confined fires. It appears by a fast deflagration which occurs after the introduction of oxygen into a compartment filled with hot gases rich in unburned combustible vapor. Practically, this situation could occur at the time of intervention of firemen who break the door or when a window breaks under the action of thermal stresses. Based on a strong experimental campaign, the present paper aimed to make a quantitative investigation of the effect of confining on a totally closed fire. With this focus, fire tests were carried out in a completely closed room of dimensions 1.20 m × 1.20 m × 1.02 m, with five sources of fire of different heat release rates. The same fire sources were also tested in a free atmosphere in order to get reference data. After a statistical study of data, a comparative analysis between both results has been done. Its outcome is that confining has a major impact on the quality of combustion and on the fire duration. More precisely, it has been noticed comparatively to fire tests in free atmosphere that confining increases the fire duration by 14.85 percent while it decreases the heat release rate by 21.72 percent.","PeriodicalId":44364,"journal":{"name":"Journal of Combustion","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2021-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Combustion","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1155/2021/6662830","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 1

Abstract

Backdraft is a complex phenomenon which occurs during cases of confined fires. It appears by a fast deflagration which occurs after the introduction of oxygen into a compartment filled with hot gases rich in unburned combustible vapor. Practically, this situation could occur at the time of intervention of firemen who break the door or when a window breaks under the action of thermal stresses. Based on a strong experimental campaign, the present paper aimed to make a quantitative investigation of the effect of confining on a totally closed fire. With this focus, fire tests were carried out in a completely closed room of dimensions 1.20 m × 1.20 m × 1.02 m, with five sources of fire of different heat release rates. The same fire sources were also tested in a free atmosphere in order to get reference data. After a statistical study of data, a comparative analysis between both results has been done. Its outcome is that confining has a major impact on the quality of combustion and on the fire duration. More precisely, it has been noticed comparatively to fire tests in free atmosphere that confining increases the fire duration by 14.85 percent while it decreases the heat release rate by 21.72 percent.

查看原文本刊更多论文

密闭隔间内围合对火势发展影响的实验研究

回风是密闭火灾中发生的一种复杂现象。它表现为在将氧气引入充满富含未燃烧可燃蒸气的热气体的隔间后发生的快速爆燃。实际上，这种情况可能发生在消防员打破门的干预或当窗户在热应力的作用下破裂时。基于一个强大的实验活动，本文旨在定量研究围合对全封闭火灾的影响。为此，在一个尺寸为1.20 m × 1.20 m × 1.02 m的完全封闭的房间中进行了火灾试验，其中有五个不同放热率的火源。为了得到参考数据，还在自由大气中对相同的火源进行了测试。在对数据进行统计研究后，对两种结果进行了比较分析。其结果是，围合对燃烧质量和火灾持续时间有重大影响。更确切地说，与自由气氛下的火灾试验相比，围合使火灾持续时间延长14.85%，放热率降低21.72%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊