摘要
在自行研制的跨临界CO2热泵热水器实验台上,通过调节冷却水流量和节流阀开度设定实验工况,测试不加喷射器的跨临界CO2热泵系统(TRCS)与加喷射器的跨临界CO2热泵系统(TRCS-EJEC)的循环性能,并分析喷射器的工作性能。在测试工况内的结果表明,TRCS-EJEC的排气温度与压缩机压比都要比TRCS低,跨临界CO2热泵系统内加入喷射器后可以增大制热系数,TRCS-EJEC的制热系数比TRCS提高的幅度最大可达13.9%。喷射器的工作完善度越高,喷射器对系统性能提高的作用就越大,高效喷射器是跨临界CO2热泵热水器优化的一个重要因素。
In order to study the effects of ejector on transcritical CO2 heat pump system performance, a prototype ot! heat pump was developed. In this paper, an experimental study on transcritical CO2 heat pump system with ejector （TRCS-EJEC） and without ejector （TRCS） was tested, and ejector performance was analyzed. The heat pump performance was investigated by changing cooling water flow rate and opening of the throttling valve. The experiment results showed that the compressor discharge temperature and compression ratio of the TRCS-EJEC is lower than that of the TRCS, and the ejector could increase the COP of the TRCS-EJEC up to 13.9% more than that of the TRCS. The COP of the TRCS-EJEC increased with the improvement of the ejector thermodynamical perfectness. Development of high efficient ejector was a critical factor on optimizing transcritical CO2 heat pump water heater.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2013年第11期1903-1909,共7页
Acta Energiae Solaris Sinica
基金
国家重点基础研究发展(973)计划(2010CB227304)
