寒冷地区空气源吸收式热泵性能提高途径及对比分析  

Approaches and Comparative Analysis for Performance Improvement of Air Source Absorption Heat Pump in Cold Regions

作　　者：吴伟[1] 石文星[1] 王宝龙[1] 李先庭[1] 

机构地区：[1]清华大学建筑学院建筑技术科学系,北京100084

出　　处：《制冷学报》2013年第5期1-7,12,共8页Journal of Refrigeration

基　　金：国家杰出青年科学基金(51125030);国家重点基础研究发展计划(2010CB227305)资助项目~~

摘　　要：空气源吸收式热泵对于北方供暖的意义重大。为了提高空气源吸收式热泵在低温环境下的可靠性和能效,提出了双级吸收式热泵、双级耦合吸收式热泵和增压吸收式热泵。通过建模和模拟分析,对这三种途径在不同环境温度下的性能进行了对比分析。若采用风机盘管末端,当采暖期内气温低于-25℃的时间很少时,双级耦合热泵的性能最好;否则可以考虑采用双级空气源吸收式热泵。室外设计温度为-15℃和-30℃时,空气源吸收式热泵的一次能源效率分别比燃煤锅炉高28%和19%。若采用地板辐射末端,则增压吸收式热泵的能效最高,室外设计温度为-15℃和-30℃时,一次能源效率可达0.953和0.874,分别比燃煤锅炉高36%和25%。考虑整个采暖期内气温较高时热泵的性能较好,则增压空气源吸收式热泵用于地板辐射采暖的节能潜力更为可观。Air source absorption heat pump （ASAHP） is of great significance for heating in North China. To improve the reliability and efficiency of ASAHP in cold climates, double-stage, double-stage coupling and booster-assisted ASAHP are put forward. Performances of the three proposed systems under different air temperatures are comparatively simulated. For fan coil heating, the double-stage coupling ASAHP performs the best when air temperature below -25℃ is not dominant, otherwise double-stage ASASHP should be considered. Primary energy efficiency （PEE） of ASAHP can be 28% and 19% higher than that of coal boiler when the outdoor air temperature is - 15 and - 30℃ , respectively. As for floor radiant heating, booster-assisted ASAHP performs the best, with a PEE as high as 0. 953 and 0. 874 when the outdoor air temperature is - 15 and -30℃, which is 36% and 25% higher than that of coal boiler. Considering that per- formance of ASAHP will be better when the air temperature is higher, the energy saving potential over the whole heating season will be much optimistic.

关 键 词：吸收式热泵 空气源 对比 寒冷地区 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TB616[动力工程及工程热物理—热能工程]