燃烧假人着装实验中表面温度变化研究
首发时间:2013-07-18
摘要:防火服装暴露在火场环境下,其表面温度会逐渐升高,并大量传热至人体,可能会引起皮肤烧伤。通过在燃烧假人闪火实验中利用红外热像仪测试实验服装以及假人的表面温度,研究发现闪火燃烧试验结束后,通过服装传递的热量使假人的表面温度在10秒内以大约0.5oC/S的速度持续升高;减少燃烧时间、使用克重较大的面料会减小这种升温幅度;而增加闪火时间、穿着尺寸较小的服装则会加大升温幅度。针对闪火燃烧试验结束后实验服装系统的散热性能,引入了新变量---着装假人系统的散热效能指数(γ)来进行综合表征和比较分析。
关键词: 燃烧假人系统 防火服装 表面温度 散热性能 红外热像仪
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THE STUDY ON SURFACE TEMPERATURE OF CLOTHING AND FLAME MANIKIN
Abstract:Under exposure to flash fire, the surface temperature of the thermal protective clothing rises gradually during the exposure, and the heat transfer to human body might cause damage to skin. In this paper, the flame manikin system and the thermal infrared camera were used to capture the surface temperature of 10 sets of protective clothing and manikin after flame exposure. The results showed that the temperature of clothing was very high during the initial stage of cooling period, and the heat transferred to the body, resulting in the increase of the skin temperature with 0.5oC/s for about 10 seconds. Decreasing of burning time, application of slight fabric reduce the tendency of rising surface temperature, but increase of burning time, tight garment will increase the tendency of rising surface temperature. A new parameter―the efficiency index of the heat dissipation about the flame manikin (γ) is introduced to attribute, contrast and compare the heat dissipation after the fire exposure.
Keywords: Flame manikin system thermal protective clothing Surface temperature Heat dissipation Infra-camera
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