二氧化碳自然对流回路在临界区流动特性的实验研究  

An Experimental Investigation on the Flow Characteristics of Closed CO_2 Natural Circulation Loop in the Critical Region

作　　者：邓毕力[1] 张信荣[1] 

机构地区：[1]北京大学工学院能源与资源工程系,北京100871

出　　处：《工程热物理学报》2012年第10期1747-1750,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50976002)

摘　　要：本文对二氧化碳在矩形封闭回路中自然对流循环的流动特性进行了实验研究,研究了回路在临界点附近三种流动循环的稳定性。在所有的实验结果中,气-液两相循环是不稳定的,跨临界/超临界循环是稳定的,而单相的气态循环的稳定性还取决于循环所处的热力学状态。This study presents an experimental investigation on the flow characteristics of natural circulation in a rectangular closed loop. The flow stability of the three types of flow circulation near the critical point of CO2 is examined. For all the experimental flow circulation results, it＇s found that the two phase gas-liquid circulations are unstable, the transcritical/supercritical circulations are always stable; while the stability of the single phase circulations is depends on its thermodynamic state.

关 键 词：二氧化碳 自然对流循环 封闭回路 稳定性 临界区 

分 类 号：TK124[动力工程及工程热物理—工程热物理]