单面与双面加热时窄缝流道内过冷沸腾气泡行为的比较  

COMPARISON OF BUBBLE BEHAVIOR FOR DOUBLE-SIDE AND SINGLE-SIDE HEATING OF SUBCOOLED FLOW BOILING IN NARROW CHANNELS

作　　者：潘良明[1] 何川[1] 辛明道[1] 吴小航[2] 

机构地区：[1]重庆大学工程热物理研究所,重庆400044 [2]中国核动力研究设计院反应堆工程所,四川成都610041

出　　处：《化工学报》2004年第9期1519-1522,共4页CIESC Journal

基　　金：国家重点基础研究发展规划项目 (No G2 0 0 0 0 2 63 0 5 );空泡物理和自然循环重点实验室开放基金资助 ~~

摘　　要：The bubble behavior of subcooled R-12 flow boiling in the narrow channels with both double-side and single-side heating was studied experimentally.Experimental settings are: a test-section heating length of 400 mm,a cross-section of 35 mm in width and 2 mm in gap size,a mass flux of 700～1500 kg·m -2 ·s -1 ,a heat flux of 25～70 kW·m -2 and a pressure of 1.3～2.0 MPa.A comparison was made in terms of the onset of nucleate boiling(ONB)point and bubble characters with other flow pattern. The study found that with some appropriate modifications, the characteristics of double-side heating and single-side heating showed a better similarity.The bubble behavior of subcooled R-12 flow boiling in the narrow channels with both double-side and single-side heating was studied experimentally. Experimental settings were: a test-section heating length of 400 mm, a cross-section of 35 mm in width and 2 mm in gap size, a mass flux of 700-1500 kg&middotm-2&middots-1, a heat flux of 25-70 kW&middotm-2 and a pressure of 1.3-2.0 MPa. A comparison was made in terms if the onset of nucleate boiling (ONB) point and bubble characters with other flow pattern. The study found that with some appropriate modifications, the characteristics of double-side heating and single-side heating showed a better similarity.

关 键 词：过冷流动沸腾 气泡行为 单面加热 双面加热 窄缝流道 

分 类 号：TK124[动力工程及工程热物理—工程热物理]