作　　者： ; ;

机构地区： 北京工业大学

出　　处： 《太阳能学报》 2008年第10期1225-1229,共5页

摘　　要： 用喷射元件替代准二级压缩热泵系统的辅路节流元件构造出准二级压缩-喷射复合热泵系统,为了考核该复合热泵系统的工作特性,在冷凝温度为45℃、蒸发温度在-8～-25℃变化的不同工况下,详细测量各种原型机的性能。结果表明:在喷射器的设计工况下,复合热泵系统的性能均优于普通准二级压缩热泵系统,偏离设计工况时其性能降低;经过优化设计的喷射器可以使复合热泵系统在较宽的工况范围内保持优越的性能,制热COP较普通准二级压缩热泵系统提高约10%。 A quasi two-stage compression heat pump system coupled with ejector was designed, in which the ejector replaces the throttling element in conventional heat pump with economizer. When the condensation temperature kept at 45℃ and the evaporating temperature varies from - 8℃ to - 25℃, the performances of the heat pump prototypes were tested in detail. The experimental results demonstrate that the heat pump system coupled with ejector owns better performances than the quasi two-stage heat pump system when it nmning under the designing conditions, but its performances will decrease under the off-designing conditions. The coupled heat pump system with the ejector by optimum design can obtain excellent performances in a wide range of operating conditions, and its heating COP can be about 10% higher than the heat pump system without the ejector.

关 键 词： 热泵 经济器 喷射器 涡旋压缩机 试验研究

领　　域： [动力工程及工程热物理]