铅铋与水自然循环流动传热比较分析  

Comparative Analysis of LBE and Water Natural Circulation Flow Heat Transfer

作　　者：李精精[1] 周涛[1] 刘梦影[1] 邹文重[1] 苏子威[1] 李云博 吴宜灿[2] 

机构地区：[1]华北电力大学核热工安全与标准化研究所,北京102206 [2]中国科学院合肥物质研究院核能安全技术研究所,合肥230031

出　　处：《核科学与工程》2014年第2期249-256,共8页Nuclear Science and Engineering

基　　金：中国科学院中国科学院战略性先导科技专项资助项目~~

摘　　要：铅铋合金和水一样具有一定的自然循环能力,被选为加速器驱动的次临界堆中最有前景的冷却剂之一。对两者自然循环流动传热的比较分析研究,可以优化铅铋回路的设计。建立回路模型,计算铅铋及水的自然循环流量,验证了回路进行自然循环的可行性。通过比较不同温差下相关参数如流速、雷诺数、努塞尔数,得出两者流动传热差异。根据热流体理论,铅铋和水自然循环中,两者的热阻力机制都起到主导作用,水流热阻力和热绕流机制作用强于铅铋流体,因此铅铋自然循环流动传热效果不如单相水。Lead bismuth eutectic （LBE） is elected as one of the most promising coolants in ADS. Natural circulation of LBE is widely concerned by the researchers. A comparative analysis of LBE and water natural circulation flow heat transfer is carried out. A circuit model is built, and natural circulation flow of LBE and water is calculated to verify the feasibility of the natural circulation system. Through comparing parameters such as the flow rate, reynolds number, the nusselt number at different transfer differences are drown. According to the thermal drag plays a leading role in both the lead on. Besides, the effect of thermal drag and thermal er than those on LBE. Thus, LBE natural circulation than that of single phase water. temperature drops, and flow heat theory of thermal fluid flow, the bismuth and water natural circulati roundabout flow on water is strong flow heat transfer ability is weaker

关 键 词：铅铋合金 单相水 自然循环 流动 传热 

分 类 号：TL361[核科学技术—核技术及应用]