利用暖体假人对液冷服散热特性的实验研究分析

Appraisal and Analysis of Heat Removing Characteristic of Liquid Cooling Garment Using Thermal Manikin.

目的利用暖体假人对液冷服的各设计参数间的内在关系进行分析 ,同时对液冷服的散热特性进行评价分析。方法温度舱内暖体假人着液冷服和隔热服 ,在不同的温度环境和不同的暖体假人代谢率条件下 ,改变服装设计参数 ,以获得液冷服在不同实验条件下进口液温、液体流率与液冷服散热量及温度比效率间的关系。并测量冷却液进出口温度 ,计算液冷服的实际散热量。结果得到了液冷服在不同实验条件下进口液温、液体流率与液冷服散热量及温度比效率间的关系和液冷服的实际散热量 ,为服装设计参数的合理性提供了评价依据。结论验证了该舱外航天服的液冷服结构参数选取较为合理。揭示了液体流率受管道结构等条件的限制 ,合理调节范围较窄 ,服装温度比效率不会很高 。

Objective To analyze the relation of the design parameters and a ppraise the heat removing characteristic of liquid cooling garment(LCG) using th ermal manikin. Method To appraise the design of LCG, the thermal ma nikin wearing LCG and heat insulation garment was put in the temperature cabin, then the inlet and outlet temperature of cooling liquid in the LCG were measured and the heat removed was calculated. Result The relationship betwe en the design parameters and heat removed, and also that between the design para meters and temperature ratio efficiency were found. And the heat removed was cal culated. It provided a reasonable basis for appraisal of LCG. Conclusion The design of the LCG for the EVA space suit was found to be reasonable. T he flow rate regulation range was too narrow, and the change of heat removing ca pacity depended on the change of inlet temperature.