广义一维势中热声制冷微循环的性能分析

Performance analysis for quantum thermoacoustic refrigeration micro-cycle working in generalized 1D potential

从工质粒子在不同声波势场条件下的量子力学行为入手,建立一套适用于各种一维势场条件的广义量子热声制冷微循环分析模型并推导出广义量子热声制冷微循环的性能参数表达式。以几个典型的一维势场为例,计算分析工质粒子在不同势场中运动时的循环性能。通过比较,确定当工质粒子工作于一维无限深势阱或谐振势阱条件下时,循环的性能系数和制冷率的综合性能比其他势场条件时的优。研究结果表明:要使热声制冷机性能达到最优,必须对声场进行控制,使其能够在回热器中建立起一维无限深势阱或谐振势阱。

A set of analysis model for generalized quantum thermoacoustic refrigeration micro-cycle working in various 1D potential wells was established started with the quantum mechanical behavior of working medium particles under different acoustic potential field conditions.And the performance parameter expressions of the generalized quantum thermoacoustic refrigeration micro-cycle were derived.Taking several typical 1D potentials as examples,the cyclic properties of working medium particles moving in different potential fields were calculated and analyzed.By comparison,it was show that when particle works in 1D infinite deep potential well or resonance potential well,the comprehensive performance of micro-cycle was better than that of other potential well conditions.The results show that,to achieve the optimal performance of the thermoacoustic refrigerator,the sound field must be controlled so that it can establish a 1D infinite deep potential well or resonant potential well in the regenerator.