System and method for testing thermal resistance
A technology of thermal resistance and simulation system, which is applied in the field of fire science and technology, can solve the problems of the influence of thermal resistance of thermal protective clothing and the inaccurate test results, etc., and achieve the effect of flexible and variable thickness
Inactive Publication Date: 2018-06-05
HEFEI INST FOR PUBLIC SAFETY RES TSINGHUA UNIV +2
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However, this process does not take into account the actual situation. In a high-temperature heat radiation environment, the human skin usually sweats and causes a wet situation, which affects the thermal resistance of the thermal protective clothing, so the test results will not be very accurate.
[0005] At present, there is no method for testing the thermal resistance of thermal protective clothing when the thermal protective clothing is sweating in a high-temperature heat radiation environment
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[0047] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0048] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0049] Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.
[0050]It should be understood that although the ...
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Abstract
The embodiment of the invention provides a system and a method for testing thermal resistance and relates to the field of fire science and technology. The system can simulate a perspiring state of a human body in a high temperature thermal radiation environment, so that more accurate thermal resistance of heat-protective clothing is tested. The method comprises the following steps: starting a heater; when the heater reaches preset thermal radiation power, starting a human body perspiring simulation system; when the human body perspiring simulation system reaches a preset human body skin perspiring state, heating the heat-protective clothing; after the heat-protective clothing reaches a thermal equilibrium state, measuring outer surface temperature of an outer layer of the heat-protective clothing and inner surface temperature of a comfort layer, and measuring heat flow density of the comfort layer of the heat-protective clothing by virtue of a heat flow density meter; and finally obtaining the thermal resistance of the heat-protective clothing according to the preset thermal radiation power, the outer surface temperature of the outer layer, the inner surface temperature of the comfort layer and the heat flow density by virtue of a data acquisition system. The technical scheme provided by the embodiment of the invention is applicable to a process of testing the thermal resistance of the heat-protective clothing.
Description
【Technical field】 [0001] The invention relates to the field of fire science and technology, in particular to a system and method for testing thermal resistance. 【Background technique】 [0002] Whether it is fire fighting or other high-temperature dangerous work, high-intensity thermal radiation poses a serious threat to the safety of workers. Thermal protective clothing is one of the important guarantees for the safety of workers in high-temperature thermal radiation environments. Therefore, an accurate assessment of the thermal protection performance of thermal protective clothing to protect workers from the hazards of thermal radiation in high-temperature thermal radiation environments has also become a fire emergency response tool. An important research direction in the field of equipment. [0003] Generally, the thermal insulation of thermal protective clothing characterizes its ability to hinder heat transfer, and is an important physical parameter in thermal comfort e...
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IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 付明翁文国袁宏永陈涛王道亮
Owner HEFEI INST FOR PUBLIC SAFETY RES TSINGHUA UNIV