燃气机热泵系统的制冷性能  

Cooling Performance of Gas Engine-Driven Heat Pump System

作　　者：刘焕卫[1] 杨昭[1] 王明涛[1] 

机构地区：[1]天津大学机械工程学院,天津300072

出　　处：《天津大学学报》2011年第7期645-649,共5页Journal of Tianjin University(Science and Technology)

基　　金：国家高技术研究发展计划(863计划)资助项目(2007AA05Z223);教育部高等学校博士点基金资助项目(20080056004);国家自然科学基金资助项目(51076112)

摘　　要：对燃气发动机驱动的空气-水热泵系统进行了制冷性能的实验研究.在充分回收发动机余热的情况下,在大范围工况下对影响系统性能的几个重要因素即蒸发器进水温度、蒸发器进水流量、燃气发动机转速以及环境温度等进行了实验研究.结果表明:环境温度31.2,℃,蒸发器进水温度由12,℃升高到23,℃时,室内侧制冷量增加20.4%,系统一次能源利用率提高13.2%;另一方面,当发动机转速由1,300,r/min升高到1,900,r/min时,系统一次能源利用率先增加15.2%,而后降低7.5%,在1,600,r/min出现峰值.最后获得燃气机热泵系统制冷的最优工况.The performance characteristic of gas engine driven heat pump in cooling mode was investigated experi-mentally.With engine heat recovery,the effects of several important factors（evaporator water inlet temperature,evaporator water volume flow rate,gas engine speed and ambient temperature）on the performance of gas engine-driven heat pump were studied in a wide range of operating conditions.The results show that indoor unit cooling ca-pacity and the primary energy ratio increases by 20.4% and 13.2% respectively as evaporator water inlet temperature increased from 12,℃ to 23,℃ at the ambient temperature of 31.2,℃.On the other hand,when the gas engine speed increases from 1,300,r/min to 1,900,r/min,the primary energy ratio first increases by 15.2%,then decreases by 7.5%,peaking at 1,600,r/min.Finally,the optimal condition of gas engine driven heat pump was drawn at the maxi-mum primary energy ratio.

关 键 词：燃气机热泵 制冷模式 回收余热 一次能源利用率 最优工况 

分 类 号：TK511.2[动力工程及工程热物理—热能工程]