相变储能-热电制冷复合热控装置的设计和有限元分析

For the heat-producing devices on satellites or other space vehicles, an excellent temperature control if of great importance, which requires small size, light weight and reliability of the refrigeration system. Compared with mechanical refrigeration systems, the thermoelectric devices have much more advatages for space vehicles' cooling use, e.g., small size, light weight, rapid cooling, no moving parts, firm structure, etc. Because the charge/recharge process of the phase change energy storage device is well closed and recyclable, it can be used as radiator for thermoelectric devices in the vacuum environment. Furthermore, the phase change energy storage device can recuce the heat exchange with enviroment and increase the energy efficiency. In this paper, a prototype of thermoelectric cooling system employing phase change material is designed. A finite element analysis (FEA) is made for the temperature fields of the prototype. This prototype is 44.1mm thick. It has a total weight of 378g and a 50 minutes design cooling time. The results of FEA shows that the prototype can effectively cool the spaceborne processor under different thermal load.