独立式燃气机热泵系统余热对制冷性能的影响.pdf

独立式燃气机热泵系统余热对制冷性能的影响*

刘焕卫杨昭王文斌吴曦王明涛
(天津大学热能研究所 ******@tju.)

摘要:独立式燃气机热泵系统制冷工况下向筑物提供冷量的同时产生生活热水。为研究燃气发动机余热对燃气机热泵系统制
冷性能的影响,对燃气发动机余热回收、蒸发器进水温度和燃气发动机转速进行了大范围工况内的实验研究。结果表明:燃
气发动机余热、系统制冷量以及燃气发动机一次能耗随蒸发器进水温度和燃气发动机转速的升高而增大。与此同时,系统性
能系数、一次能源利用率随蒸发器进水温度的升高而增大,而随燃气发动机转速的升高而降低。燃气发动机余热可使系统获
得高于 55℃的生活热水,同时使系统性能系数 COPt 提高 60%以上。
关键词:独立式燃气机热泵制冷工况燃气发动机余热性能系数一次能源利用率
中图分类号: TK511+.2

Influence of Waste Heat Recovery on Cooling Performance of Independent
Gas Engine-Driven Heat Pump

LIU Huanwei Yang Zhao Wang Wenbin Wang Mingtao Wu Xi
(School of Mechanical Engineering, Tianjin University, Tianjin 300072, China)

Abstract:Independent gas engine-driven heat pump system (IGEHP) could provide cooling and hot water in cooling mode, at the
same time, it also could provide electricity for the electric equipment of this system. In order to investigate the influence of waste heat
recovery on the cooling performance of IGEHP, with engine waste heat recovery, the effects of two important factors, such as
evaporator water inlet temperature and gas engine speed, on the performance of IGEHP were studied in a wide range of operating
conditions. The results present that the waste heat recovery, cooling capacity and gas engine energy consumption increase as the
increase of evaporator water inlet temperature and gas engine speeds, meanwhile, the coefficient of per