含不凝性气体的蒸汽冷凝传热实验研究  

Analysis of Experiments for Vertical Out-Tube Steam Condensation in Presence of Non-Condensable Gases

作　　者：宿吉强 孙中宁[1] 范广铭[1] 郭子萱[1] 

机构地区：[1]哈尔滨工程大学核安全与仿真国防重点学科实验室,哈尔滨150001

出　　处：《核动力工程》2014年第1期36-41,共6页Nuclear Power Engineering

摘　　要：对含不凝性气体的蒸汽在竖直圆管外表面冷凝传热进行实验研究,分析过冷度、压力、不凝性气体质量分数以及氦气占比对蒸汽冷凝换热的影响,给出冷凝传热过程中的经验关联式并同经典公式进行对比。结果表明:在压力不变的条件下,壁面过冷度同冷凝传热系数的变化趋势相反;实验范围内,未发生氦气分层现象;所得到的经验关联式具有更广的适用范围,且其与实验值的误差在±20%以内。In order to investigate the influence of various parameters in the steam condensation heat transfer process with non-condensable gas, and to get a more suitable empirical correlation, the wall under-cooling, pressure and the content of non-condensable gas were studied outside a vertical tube by experiments. The results showed that： at the same pressure, the relationship between wall sub-cooling and HTC is exponential, and helium stratification does not happen within the experimental range. Based on the analysis of various experimental variables, combined with a large number of experimental data, a wider scope of application of the empirical correlation associated is obtained with the experimental value of the error within ± 20%.

关 键 词：不凝性气体 壁面过冷度 冷凝传热 蒸汽冷凝 

分 类 号：TL332[核科学技术—核技术及应用]