热电风扇结构设计及数值优化

Structure Design and Numerical Optimization of Thermoelectric Fan

针对青藏高原等寒冷地区供暖帐篷内上下温差较大的问题,本文提出了在帐篷内供暖炉上方安装带有温差发电器件的风扇来提高温度场的均匀性。本文数值研究了在不同风扇送风量下帐篷内空气速度场和温度场分布以及不同风扇外形结构差异对温差发电器件冷热端温差的影响.结果表明:添加热电风扇后帐篷内温度场均匀性得到明显提高,设计的优化风扇结构满足热电模块工作温差的需要.

Large temperature difference between the upper and the lower zone of the tent exists in cold region for Qinghai-Tibet Plateau, a thermoelectric fan on the top of the heating stove was proposed to improve the temperature uniformity in the above mentioned tent. The air velocity and temperature distribution in the tent were numerically studied under different air mass flow rate. Moreover, the effects of fan geometry parameters on the temperature difference between hot end and cold end for the thermoelectric module were investigated. It is revealed that the employment of thermo-electric fan help to improve the air temperature uniformity significantly. The designed optimized fan structure can successfully satisfy the operating requirement of the temperature difference for the thermoelectric module.