摘要
以航空货运中常见的瓦楞纸箱为对象,在50~90k Pa气压环境模拟舱中开展了单个纸箱、堆叠的两个纸箱的火灾实验,从理论和实验两方面研究低压环境下的燃烧速率行为,为航空火险救援提供依据。从传热传质角度推导低气压对固体燃烧速率行为的影响规律。结果表明:湍流固体火灾燃烧速率的压力表达式为:■。通过实验结果验证了该表达式,同时给出经验关系式:■。在应用压力模型和辐射火焰模型对比分析固定压力环境下的燃烧速率发现,辐射火焰模型的拟合效果优于压力模型。
This study look corrugated cartons commonly found in airfreight as the research object. and carried out single carton firc^ and two staked cartons fire experiments under 50.90 kPa in a lowpressure environment simulation cabin.The burning rate behavior under reduced pressure environment was investigated theoretically and experimentally, which provided a basis for aviation fire insur ance. The pressure dependence of burning rate behavior of solid fuel was derived from the perspective of heat and mass transfer. The results revealed that the pressure dependcnce of turbulent solid fire burning rate was expressed as:m m″∝AhP^2/3+ArP3/2.The expression was verified by experimental results, and the empirical rela~ lion ship was give n as m m∝P^1.3.Comparative an alysis of the bur n ing rate under fixed pressure environment using pressure modeling and radiation fire modeling showed hat the fitting effect of radi<r lion fire model was significanlly better than that of pressure model.
作者
冯瑞
田润和
陈科位
叶君健
张辉
FENG Rui;TIAN Rim-he;CHEN Ke-wei;YE Jun-jian;ZHANG Hui(Inslilute of Public Safety Research, Tsinghua University .Beijing 100084, China;Sumavision Technologies Co., Ltd.,Beijing 100084, China;Midea Group Co., Ltd., Guangdong Foshan 528311, China;Noah'S Ark Lab, Huawei Technologies Co., Ltd., Guangdong Shenzhen 518000, China)
出处
《消防科学与技术》
CAS
北大核心
2019年第2期165-168,共4页
Fire Science and Technology
基金
国家重大研发计划项目(2017YFC0803300)
国家自然科学基金项目(91626201
U1633203)
民航重大专项项目(MHRD20160103)
关键词
低气压环境
瓦楞纸箱
燃烧速率
有焰燃烧
low ambienl pressure
corrugated carton
burning rate
flaming combustion