变制冷剂流量制冷循环性能与气液两相流流型的研究  

Experimental researches on relationship between the performance of VRF refrigeration loop and vapor-liquid two-phases flow pattern

作　　者：陶宏[1] 陶乐仁[1] 郑志皋[1] 王金锋[1] 黄理浩[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《上海理工大学学报》2009年第6期521-524,共4页Journal of University of Shanghai For Science and Technology

摘　　要：实验应用流动显示方法,发现变制冷剂流量制冷循环的蒸发器入口(也是膨胀阀出口)的制冷剂流动存在两类不同的气液两相流流型——液-气分相流和泡-气分相流,并且存在流型转变的过渡区域.在不同的气液两相流流型时,变制冷剂流量制冷循环的制冷量、过热度、排气温度等性能截然不同,在流型转变的过渡区域,制冷循环处于波动之中.The experiment platform, which is a special one for tesing the performance of variable refrigerant volume refrigeration loop, was introduced. By means of flow display, it can be seen that there are two regimes of vapor-liquid two-phases flow pattern at the inlet of evaporator （or the outlet of expansion valve）, and between them there is a transition zone. The refrigeration loop performs wholly diferently in the two regimes, and with fluctuation in the transition zone.

关 键 词：制冷循环 性能 气液两相流流型 流动显示 流动可视化 

分 类 号：TB657.2[一般工业技术—制冷工程] TB615