热功复合驱动热泵循环的敏感性分析  

Sensitivity Analysis on Heat Power Hybrid Driven Heat Pump Cycle

作　　者：张娜[1] 王康[2] 韩巍[1] 亓海青 

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]国核电力规划设计研究院,北京100095

出　　处：《热能动力工程》2016年第3期24-29,135-136,共6页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金资助项目(51576169);国家重点基础研究发展计划(973计划)(No.2014CB249202)

摘　　要：经热压缩再机械压缩后,对热功复合驱动热泵循环的性能进行了模拟及计算分析。在相同的能量输入前提下,比较了压缩式热泵与吸收式热泵并联循环与热功复合驱动热泵循环。在基本工况下热功复合热泵的性能系数、火用效率与热驱动系数分别提高了10.15%、12.24%和16.59%。以制热温度、制热量、性能系数、热驱动系数和火用效率等作为评价指标,将压气机压比ε、溴化锂稀溶液的浓度X对热功复合驱动热泵循环性能的影响进行了敏感性分析。研究表明:综合考虑热压缩与机械压缩的能耗分配、能源利用率等因素,将压比ε取1.3,溴化锂溶液的浓度X取0.622为宜。The simulation,calculation and analysis on the performances of heat power hybrid driven heat Pump cycle were made after hot compression and then mechanical compression. Under the precondition of the same energy input,the paper compared the compression heat pump and absorption heat pump in parallel loop to the heat power hybrid driven heat pump cycle. The result showed under the basic operating conditions,the performance coefficient,exergy efficiency and heat driving coefficient of the heat power hybrid heat pump can be respectively improved by 10. 15%,12. 24% and 16. 59%. Taking the heating temperature,heating capacity,performance coefficient,heat driving coefficient,exergy efficiency as the evaluation indexes,the paper also performed the sensitivity analysis on the influence of some key parameters including the pressure ratio ε and the concentration of lithium bromide dilute solution X on the heat pump cycle performance. The study indicated it would be advisable to take pressure ratio ε as 1. 3 and lithium bromide dilute solution X as 0. 622 with synthesization of such factors as energy consumption distribution and energy utilization rate of hot compression and mechanical compression.

关 键 词：热功复合驱动 复合热泵循环 热力性能 压比 工质浓度 

分 类 号：TL353.13[核科学技术—核技术及应用]