不同制冷剂的气-液喷射泵性能计算分析  

CALCULATION AND ANALYSIS OF PERFORMANCE OF GAS-LIQUID INJECTOR WITH VARIOUS REFRIGERANTS

作　　者：王菲[1,2] 沈胜强[2] 杨勇[2] 

机构地区：[1]中国矿业大学力学与建筑工程学院,江苏徐州221116 [2]大连理工大学海洋能源利用与节能教育部重点实验室,辽宁大连116024

出　　处：《工程热物理学报》2010年第8期1270-1272,共3页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50576007)

摘　　要：建立了喷射泵的热力学模型,以不同制冷剂为工质,比较了喷射泵的引射系数,计算并比较了喷射泵内的压力和速度变化趋势及混合室内的壁面阻力,在此基础上分析了喷射泵性能存在差异的主要原因。结果表明：喷射泵以水为工质的引射系数要远高于以其他几种制冷剂为工质的引射系数。The thermodynamic model of ejector was estabhshed.The entrainment ratios of injector with various refrigerants were compared by using the model.The pressure and velocity change trends in the injector and the wall resistances along the converging stretch of the mixing chamber were calculated and compared,on the basis,the main reason for the performance difference of injector with various refrigerants was analyzed.The results indicate that the entrainment ratio of injector with water is far higher than those with other refrigerants

关 键 词：双喷射制冷系统 气-液喷射泵 制冷剂 引射系数 

分 类 号：TK511.3[动力工程及工程热物理—热能工程]