传热和内不可逆性对太阳能热机循环性能的影响  

THE INFLUENCE OF FINITE-RATE HEAT TRANSFER AND INTERNAL IRREVERSIBILITY ON THE CYCLIC PERFORMANCE OF A SOLAR ENGINE

作　　者：林比宏[1] 林国星[2] 陈金灿[2] 

机构地区：[1]泉州师范学院物理系,福建泉州362000 [2]厦门大学物理系,福建厦门361005

出　　处：《工程热物理学报》2001年第1期28-30,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目!(No.59976033)

摘　　要：本文建立太阳能热机系统的一般循环模型，探讨传热和内不可逆性因素对其循环性能的影响；在不同的热传递规律下优化系统的各主要性能参数，对系统的效率、集热器的工作温度和热机中高、低温热交换器的传热面积比作了较深入的分析，从而获得一些有意义的新结论。A general cycle model of a solar engine is set up. The influence of finite-rate heat transfer and internal irreversibility on the cyclic performance of the system is searched. The several main performance parameters of the system are optimized for some different heat-transfer laws. The efficiency of the system, the operating temperature of the solar collector and the ratio of heat-transfer areas of heat exchangers in the engine are analyzed in detail, so that some new significant results are obtained.

关 键 词：太阳能热机 热传递规律 内不可逆性 循环性能 

分 类 号：TK51[动力工程及工程热物理—热能工程]