中国安全科学学报 ›› 2022, Vol. 32 ›› Issue (1): 201-207.doi: 10.16265/j.cnki.issn1003-3033.2022.01.027

• 职业卫生 • 上一篇    下一篇

气凝胶消防救援服内衬的热阻计算*

鲁义1,2 教授, 杨帆1, 刘欢3 工程师, 陈健1, 王金鹏1, 李文辉4   

  1. 1 湖南科技大学 资源环境与安全工程学院,湖南 湘潭411201;
    2 湖南科技大学 南方煤矿瓦斯与顶板灾害预防控制安全生产重点实验室,湖南 湘潭411201;
    3 湖南科技大学 材料科学与工程学院,湖南 湘潭411201;
    4 湖南永霏特种防护用品有限公司,湖南 湘潭411201
  • 收稿日期:2021-10-20 修回日期:2021-12-12 出版日期:2022-01-28 发布日期:2022-07-28
  • 作者简介:鲁 义 (1986—),男,江西新干人,博士,教授,博士生导师,主要从事火灾科学与技术方面的工作。E-mail:luyijx@163.com。
  • 基金资助:
    国家自然科学基金资助(51974119,51974120,51774135); 湖湘青年英才资助项目(2020RC3047); 湖南省教育厅优秀青年项目(20B230); 湖南省自然科学基金重点项目资助(2020JJ4023)。

Thermal resistance calculation of aerogel fire-fighting clothing lining

LU Yi1, 2, YANG Fan 1, LIU Huan3, CHEN Jian1, WANG Jinpeng1, LI Wenhui4   

  1. 1 School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan Hunan 411201, China;
    2 Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines, Hunan University of Science and Technology, Xiangtan Hunan 411201, China;
    3 School of Materials Science and Engineering, Hunan University of Science and Technology, Xiangtan Hunan 411201, China;
    4 Hunan YongFei Special Protective Equipment Co.,Ltd., Xiangtan Hunan 411201, China
  • Received:2021-10-20 Revised:2021-12-12 Online:2022-01-28 Published:2022-07-28

摘要: 为提高消防救援服在高温环境中的穿着热舒适性能,探究消防救援服内衬热阻的理论公式推导和数值计算,推导得出粒径、导热系数、填充角度和热阻之间的关系,用Matlab作出三维模型图,表示热阻和三者之间的关系。结果表明:当粒径越小,填充角度越小和导热系数越小时,热阻值越大;当填充颗粒的粒径一定时,等热阻线呈现抛物线趋势,且随着填充角度的增加,总热阻R先减小后增大;当填充角度一定时,等热阻线近似为一条单调递减的斜直线,并且随着粒径与导热系数的增加,总热阻R呈线性减小;当导热系数一定时,等热阻线近似为一条左双曲线,当填充角度为0.92左右时,等热阻线所取的粒径值最大。

关键词: 气凝胶, 消防救援服, 隔热内衬, 热阻计算, 数值模拟

Abstract: In order to improve thermal comfort performance of fire rescue suits in high temperature environment, theoretical formula derivation and calculation of thermal resistance of fire rescue clothing lining were studied, and relationship among particle size, thermal conductivity, filling angle and thermal resistance was deduced. Then, a three-dimensional model was made by using matlab to show the relationship between thermal resistance and the three. The results show that when particle size is smaller, filling angle and thermal conductivity were smaller, the thermal resistance will be greater. When the size is at a fixed value, isothermal resistance curve presents a parabolic trend. As filling angle increases, total thermal resistance Rdecreases first and then increases, but when it is fixed, the resistance curve is approximately a monotonic decreasing oblique line, and total thermal resistance decreases linearly with the increase of particle size and thermal conductivity. What is more, the thermal conductivity is constant, the isotherm is approximately a left hyperbola, and it has the largest particle size at a filling angle of about 0.92.

Key words: aerogel, fire-fighting and rescue clothing, insulation lining, thermal resistance calculation, numerical simulation

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