【摘要】 通过对现有温差电公式进行理论推导,结合具体的试验结论,通过绘制Z-h(COP)、DT-h以及U-h三条关系曲线,直观地反映了最佳hopt与优值系数Z、温差DT以及工作电压U之间的函数关系,从而为设计高效温差电空调系统奠定了理论基础。基于此,通过改进温差电材料的热电性能、提高优值系数Z、降低冷热面温差、优化工作电压以及引入高密高效散热器、改善散热条件等几个方面,设计了一套高效率的温差电空调系统,其致冷效率可以达到4~5。更多还原

【Abstract】 The paper deduced the existing thermoelectric formula from three curves, and combined with the particular test conclusion by drawing curves reflecting the relationship between figure of merit(Z ), temperature difference-(DT ), voltage(U ) and coefficient of performance h (COP)respectively. It directly showed the functional relation between optimum h opt and Z ,DT and U. So it provided the theoretical base of designing the high-efficiency thermo electric air-conditioner system. Integrating theory with practice, by enhancing the figure of merit(Z ) and the performance of thermoelectric material, decreasing the temperature difference between heat and cool side, optimizing the working voltage and improving the heat-sink condition, a set of high-efficiency thermoelectric air-conditioner system was designed, whose cooling efficiency could achieve 4%～5%.更多还原