An Experimental Study on Boiling and Flow Phenomena in External Reactor Vessel cooling
Under postulated severe accident conditions, one possible strategy to retain the molten debris in the reactor pressure vessel (RPV) is flooding the cavity, and removing the decay heat by external reactor vessel cooling (ERVC). Despite the obvious advantages on safety improvement, it still needs to study the issues of ERVC. Among the issues, the coolability of ERVC is of the most importance. For the prediction of the coolability and a better understanding ERVC, it is necessary to investigate the boiling and flow phenomena outside the RPV lower head. An experimental study program is performed at Shanghai Jiao Tong University to study boiling and flow phenomena under ERVC condition. To get an accurate data, a full-height, slice geometry test facility is set up. The objectives of this work are to observe two-phase flow, and to investigate the boiling and flow phenomena under natural circulation conditions. The parameters, including fluid temperature distribution, heating surface temperature distribution and pressure drop and the water circulation mass flow rate are obtained from steady-state test runs.
ERVC boiling phenomena REPEC test facility natural circulation
Yongchun LI Yanhua YANG Weihua ZHOU Bo KUANG Xu CHENG
School of Nuclear Science and Engineering, Shanghai Jiao Tong University 800 Dongchuan Road, Shanghai 200240, China
国际会议
上海
英文
216-227
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）