混合工质中低温热力循环特性研究  

STUDY OF MIXED WORKING FLUID POWER CYCLES FOR THE RECOVERY OF WASTE HEAT

作　　者：高林[1] 金红光[1] 郑丹星[2] 刘泽龙[1] 林汝谋[1] 蔡睿贤[1] 

机构地区：[1]中国科学院工程热物理研究所,北京100080 [2]北京化工大学,北京100029

出　　处：《工程热物理学报》2001年第6期677-679,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.59925615);国家重点基础研究计划资助项目(No.G1999022302)

摘　　要：本文从热力学第二定律角度出发，对氨水混合工质中低温动力循环进行了分析。通过与简单蒸汽循环的比较，揭示了混合工质热力循环的特性及本质，指出工质蒸发换热过程的匹配及冷凝过程是混合工质循环高效的关键。为了改善冷凝过程，可采用分馏冷凝系统取代传统的冷凝方式。同时，本文还探讨了一些基本规律。By the aid of exergy analysis, we studied ammonia-water power cycle for the recovery of low-level waste heat. Through comparing with simple Rankine steam cycle, we have revealed the characteristics of mixed working fluid power cycles, and pointed out that the high efficiency of evaporation course is the key of good performance of system. Fractionation condensation technology can decrease the exergy loss of condensation in some degree. At the same time, we have emphasized the importance of matching of low-level heat exchanging course.

关 键 词：中低温余热回收 混合工质 热力循环 Yong损失分布 换热匹配 节能 

分 类 号：TB611[一般工业技术—制冷工程] TB64