氟利昂CHF数据对压水堆工况下LUT-2006过冷CHF预测能力的评估  

Assessment of LUT-2006 Subcooled CHF Prediction at PWR Conditions with Freon CHF Data

作　　者：郭俊良 孔焕俊 桂淼 彭玉姣 单建强[1] Guo Junliang;Kong Huanjun;Gui Miao;Peng Yujiao;Shan Jianqiang(School of Energy and Power Engineering,Xi’an Jiaotong University,Xian,710049,China)

机构地区：[1]西安交通大学能源与动力工程学院,西安710049

出　　处：《核动力工程》2022年第5期27-33,共7页Nuclear Power Engineering

基　　金：科技部国家重点研发计划项目(2018FY1900403)。

摘　　要：以R-134a为模化工质,在内径为8 mm的圆管中进行了临界热流密度(CHF)实验研究。讨论了R-134a的CHF参数变化趋势,评价了Katto的流体模化方法。结果表明,CHF仅受局部参数影响,长径比的影响可以忽略。R-134a的CHF参数趋势与典型水的CHF参数趋势相似。Katto的模化方法在低临界含气率甚至是负临界含气率下都有很高的精度。将R-134a的CHF实验数据通过模化方法转换成等效水数据,并与CHF查询表(LUT)-2006进行了比较。评价结果表明,即使在几乎没有过冷CHF数据的压水堆工况,LUT-2006仍具有很高的预测精度。An experimental study on the critical heat flux(CHF)is carried out in a circular tube with an inner diameter of 8 mm using R-134a as the modeling working medium.The variation trend of CHF parameters of R-134a is discussed,and Katto’s fluid modeling method is evaluated.The results show that CHF is only affected by local parameters,and the influence of length-diameter ratio can be ignored.The CHF parameter trend of R-134a is similar to that of typical water.Katto's modeling method has high accuracy at low critical air content and even negative critical air content.The CHF experimental data of R-134a are converted into equivalent water data by modeling method and compared with CHF Lookup Table(LUT)-2006.The evaluation results show that LUT-2006 has high prediction accuracy even though there is almost no subcooled CHF data under PWR conditions.

关 键 词：临界热流密度(CHF) 氟利昂 流体模化 CHF查询表(LUT) 

分 类 号：TL334[核科学技术—核技术及应用]