新型太阳能双喷射制冷系统中喷射泵的性能分析  

STUDY ON PERFORMANCE OF INJECTOR IN SOLAR NOVEL BI-EJECTOR REFRIGERATION SYSTEM

作　　者：王菲[1] 沈胜强[1] 

机构地区：[1]大连理工大学海洋能源利用与节能教育部重点实验室,大连116024

出　　处：《太阳能学报》2010年第5期598-603,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(50576007)

摘　　要：对新型双喷射制冷系统中的喷射泵建立了达到最大提升压力时的数学模型,计算结果与实验数据吻合较好。针对新型系统中喷射泵的特点,以水为工质,分析了喷射泵的引射系数、混合室无量纲结构参数、工作蒸气参数及冷凝温度对喷射泵最大升压性能的影响。结果表明,引射系数越大,喷射泵的最大排出压力越低;混合室的无量纲结构参数越大,喷射泵的最大排出压力越低;工作蒸气的压力越高,喷射泵的最大排出压力越高;冷凝温度越高,喷射泵的最大排出压力越低。A mathematical model predicting the maximum promoting pressure performance of the injector in a novel bi- ejector refrigeration system was established. The calculated results coincide with the experimental data well. The effect of entrainment ratio, structure characteristic value of the mixing chamber, generation temperature and condensation tempera- ture on the maximum promoting pressure ability of injector were analyzed with water as working fluid. The results showed that the larger the entrainment ratio or the structure characteristic value of the mixing chamber, the smaller the maximum discharged pressures the injector can obtained. The maximum discharged pressure increases with the increasing generation pressure. However, it decreases with the increasing condensation temperature.

关 键 词：太阳能 双喷射 制冷系统 喷射泵 最大升压性能 

分 类 号：TK511.3[动力工程及工程热物理—热能工程]