铁电致冷回热循环的基本优化关系

THE FUNDAMENTAL OPTIMAL RELATION OF THE REGENERATION CYCLE FOR THE FERROELECTRIC REFRIGERATION

建立了考虑热漏、热阻及回热损失等主要不可逆因素的铁电致冷不可逆回热循环模型。针对回热不平衡的两种情况 ,导出了致冷率与致冷系数间的基本优化关系 ,其结果反映了实际致冷机观测性能的主要特征。分析了热漏、热阻以及回热损失对致冷循环性能影响的本质差异。

The modle of the irreversible regeneration cycle for the ferroelectric refrigeration with thermal resistance,heat leak and regenerative loss is established.The fundamental optimal relations of R and ε are derived by using finite time thermodynamics based on two conditions of non equilibrium regeneration.The new theory for the optimal design of the ferroelectric refrigerator is provided.