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建立了复杂传热规律下广义不可逆热声制冷机的循环模型,运用有限时间热力学方法导出了存在热阻、热漏和其他内不可逆性时,传热指数为复数的热声制冷机制冷率与制冷系数的解析式,分析了传热指数中实部和虚部对热声制冷机最优性能的影响,通过数值计算对不同损失和不同传热规律情况下的热声制冷机最佳制冷系数和制冷率的变化规律进行了比较分析.
A cyclic model of generalized irreversible thermoacoustic refrigerator under complex heat transfer laws is established. The finite-time thermodynamic method is used to derive the ratio of the cooling rate of the thermoacoustic refrigerator with the heat transfer index to the complex number in the presence of thermal resistance, heat leakage and other internal irreversibilities The influence of the real part and the imaginary part of the heat transfer index on the optimal performance of the thermoacoustic refrigerator is analyzed. By numerical calculation, the optimal refrigeration coefficient of the thermoacoustic refrigerator with different losses and different heat transfer laws And the change rule of refrigeration rate were comparatively analyzed.