摘要
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 cycle model for a generalized irreversible thermoacoustic refrigerator with heat resistance was built. The analytical formulas of the cooling load and the coefficient of performance （COP） of the thermoacoustic refrigerator were derived, in which heat resistance, heat leakage and internal dissipation were considered. Both the real part and the imaginary part of the heat transfer exponent change COP versus the cooling rate relationship quantitatively. The comparative analysis of the influences of various factors on the performance optimization of the generalized irreversible thermoacoustic refrigerator was carried out by the detailed numerical examples.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第12期91-93,共3页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(50676068)
湖北省教育厅重点资助项目(D200615002)
关键词
制冷机
传热
制冷系数
循环模型
制冷率
优化
refrigerators
heat transfer
performance coefficient
cycle models
cooling rate
optimization
