The influence of residual gas pressure on the thermal conductivity of microsphere insulations
The influence of residual gas pressure on the thermal conductivity of microsphere insulations
复制标题
残余气体压力对微球绝热材料导热系数的影响
DOI：
10.1007/bf00503159
复制
发表时间：
1988
影响因子：
2.2
通讯作者：
J. Rafałowicz
中科院分区：
文献类型：
--
作者：
R. Wawryk;J. Rafałowicz
给出了微球隔热材料中残余气体热交换研究的实验结果。还给出了在10 - 3 - 105 Pa的压力范围内微球有效热导率与残余气体（N2）压力的测量结果。制备了自泵浦微球绝热材料样品，并对其热工参数进行了测试。与标准微球绝缘相比，自泵绝缘在整个压力范围内产生较低的热导率结果。作为相当大的气体输入到绝缘体积的结果，其热参数的稳定性进行了讨论。测量了微球层内部的温度和压力分布。给出了微球绝热层内部的温度和压力梯度图。
Experimental results of investigations of the heat exchange by residual gas in microsphere insulations are presented. The results of measurements of microsphere effective thermal conductivity versus residual gas (N2) pressure in the pressure range of 10−3−105 Pa are also given. A sample of self-pumping microsphere insulation was prepared and its thermal parameters were tested. In comparison to the standard microsphere insulation, the self-pumping insulation yielded lower thermal conductivity results over the entire pressure range. The stability of its thermal parameters as a result of considerable gas input into the insulation volume is discussed. Measurements of temperature and pressure distributions inside the microsphere layer were performed. Plots of temperature and pressure gradients inside the layer of the microsphere insulation are presented.