微型燃烧器热电转化实验研究

描述了微型燃烧器内产生的热能通过热电转化途径转化为电能的实验研究。微燃烧器由石英材料组成,热电单元采用碲化铋系合金。实验采用了减少接触热阻的方法来提高热的传导。试验中得到了流量、温度、输出电压和热电转化效率间的关系并给出改进实验的思路。发现在实验条件下燃烧器壁面温度随流量呈正比关系,输出电压和功率随流量的增大而增大,系统的能量转化效率随流量的增大而减小。实验中获得的最大输出电压为1.84V,最大输出功率为368mW,最大转化效率为1.052%。

Study of the Experiment on Thermoelectric-microcombustors

The experiment that the thermal energy of the microcombustor converted into electricity by the thermoelectric device was described. The microcombustor is made up of quartz and the thermoelectric device is made up from Bi2Te3. Thermal conductivity was enhanced for reducing the contact thermal resistance. Some conclusions about flux, temperature, output voltage, output power and conversion efficiency were drew. The microcombustor surface temperature increases with flux proportionally. While the flux increases, the output voltage and the power of the device increase, too. But the conversion efficiency decreases. In this experiment, the maximum output voltage, the output power and the conversion efficiency are 1.84 V, 368 mW and 1.052 % respectively.