水冷式跨临界CO2商用热泵热水器实验研究  

Experimental Study on Commercial Water Source Heat Pump with Transcritical CO_2 Cycle

作　　者：崔晓龙[1,2] 邢子文[1] 

机构地区：[1]西安交通大学能源与动力工程学院,西安710049 [2]广州万宝集团有限公司博士后科研工作站,广州510280

出　　处：《制冷学报》2009年第3期11-15,共5页Journal of Refrigeration

基　　金：国家高技术研究发展计划(863计划)(2006AA05Z235);中国博士后科学基金(20070421115)资助项目;广东省产学研项目(2007B090400033)资助~~

摘　　要：介绍了一种以水为冷却介质的带回热器的跨临界CO_2商用热泵热水器实验系统。根据实验数据拟合了压缩机的等熵效率和容积效率公式,并依据相应的国家标准对实验系统进行了"一次加热"方式和"循环加热"方式多个工况的循环性能实验研究。实验结果表明,按照"循环加热"制取热水时,在出水温度为55℃和65℃,系统平均制热COP_h值分别达2.14到和2.08;按照"一次加热"方式制取热水时,名义工况下出水温度85℃时制热COP_h值为2.82,最大负荷工况下出水温度65℃时制热COP_h值为3.68。冷却水进水温度越高,系统效率越低,因此热泵热水器系统更适合于"一次加热"供水系统。A commercial water source heat pump with the CO2 transcritical cycle and a regenerator was presented. The isentropic efficiency and volumetric efficiency of the compressor were formulated by the experimental data, and the experiments with one-time heating and cyclic heating for the heat pump were conducted. The experimental results show that for the cyclic heating, the average COPh was 2.14 and 2.08 when the outlet water temperature was 55 ℃ and 65 ℃, respectively. For the one-time heating, a COPh of 2.82 under nominal working condition and 3.68 under maximum load working condition was achieved for the transcritical CO2 heat pump when the outlet water temperature was 85 ℃ and 65 ℃, respectively. Moreover, COPh decreased with the increase in the inlet cooling water temperature. It seems that the transcritical CO2 heat pump might be more suitable for one-time heating systems.

关 键 词：热工学 CO2 热泵热水器 跨临界循环 COP 

分 类 号：TB657.5[一般工业技术—制冷工程] TQ051.5[化学工程]