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为准确获取被多层组件包覆的空间站常压热试验之热边界,文章基于一维稳态传热模型,对15单元多层组件的等效隔热性能进行了常压环境下的试验测量。结果表明:该组件的热特性较稳定,且受环境温度影响较小,忽略相关测量误差可以近似认为其当量导热系数为0.02 W/(m·K),等效热阻为2.88℃/W。研究结果可用于空间站常压热试验的热边界分析,为常压热试验的准确开展提供数据支撑。
In order to accurately obtain the thermal boundary of atmospheric station thermal test of a space station covered by multi-layer components, the article based on the one-dimensional steady-state heat transfer model, the equivalent thermal insulation performance of 15-unit multi-layer modules was measured at atmospheric pressure . The results show that the thermal characteristics of the module are stable and less influenced by the ambient temperature. Ignoring the related measurement error, the equivalent thermal conductivity can be approximated as 0.02 W / (m · K) and the equivalent thermal resistance is 2.88 ℃ / W. The results of this study can be used to analyze the thermal boundary conditions of atmospheric station thermal tests and provide data support for the accurate development of atmospheric pressure thermal tests.