半导体冰箱冷热端散热条件实验研究

半导体制冷器件是一种高热流密度元件,在红外测量、低温超导、生物医学、空间技术等领域有重要的应用,还可开发成专用制冷装置,适用于野外施工、勘探,考古以及郊游等户外活动食品饮料的保鲜,也可用于食品、饮料及医用疫苗等的冷藏。在给定工况下,通过改善半导体器件的冷热端散热条件,可使系统制冷量和制冷性能系数大幅提高。本文设计了实验装置,特别设计了8种实验工况对采用强迫对流换热和热端采用热管换热器散热的实际半导体制冷装置进行了实验分析,提出了改善半导体制冷元件散热条件的具体措施。

EXPERIMENTAL INVESTIGATION ON CONDITIONS Of HEAT EXCHANGING FOR BOTH HOT AND COLD SIDES IN A THERMOELECTRIC REFRIGERATOR

Thermoelectric cooling module is a component that may effect high energy flux. To date, it has been widely used in many fields, such as infrared measurement, cryogenics, superconduct, biomedicine, space technology, etc. Also, such module can be developed into a thermoelectric refrigerator, which is greatly needed in remote and rural areas, especially for people working outside, for example, mineral prospecting and road constructing etc, for the purposes of cold storage for vaccine and food. Under given conditions, by improving the conditions of heat exchanging for both hot and cold sides, the cooling capacity and the COP of the thermoelectric refrigerator can be increased to a great extent. In this paper, a test rig is constructed, and 8 tests have been organized to investigate the practical effect of forced convection heat exchanging and heat pipe heat exchanger in both hot and cold sides. The detailed rules to improve the conditions of heat exchanging for a thermoelectric refrigerator have been concluded in the end.