STUDY ON DRYOUT POINT AND HEAT TRANSFER IN SUBCOOLED FLOW BOILING THROUGH VERTICAL NARROW ANNULAR CHANNELS

摘要：

The purpose of this study is to conduct the dryout point and heat transfer correlation for subcooled boiling flow in narrow annuli.The dryout point of subcooled flow boiling of water in narrow annular channels under the conditions of 0.1～0.3 MPa pressure and mass flow rate ranging from 6～60 kgm-2s-1 was measured parametrically.Experimental test channels were annular and heated bilaterally with the channel gap of 1mm and 1.5mm,and heated length of 1500mm.First,the location of the dryout was proposed with investigating the various system parameter effects on dryout point. Next,applicability of the correlation to heated bilaterally annular channels.New correlations of CHF and critical vapor quality for narrow annular channels was proposed and calculation results show a good agreement with the experimental data.

作者: Guozhong DING Suyi HUANG Shunyu SU Jia LI Xinghua HU

作者单位: School of Power and Engineering, Huazhong University of Science and Technology Wuhan, 430074, China

会议类型: 国际会议

会议名称: 第一届喷气推进与动力工程国际会议(Proceedings of the 1st International Symposium on Jet Propulsion and Power Engineering)

会议地点: 昆明

会议语种:英文

页码: 251-256

在线出版日期: 2006-09-18（万方平台首次上网日期，不代表论文的发表时间）