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 |
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引用本文: | 郭俊良,孔焕俊,桂淼,彭玉姣,单建强.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[J].核动力工程,2022,43(5):27-33. |
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作者姓名: | 郭俊良 孔焕俊 桂淼 彭玉姣 单建强 |
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作者单位: | 西安交通大学能源与动力工程学院,西安,710049 |
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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。
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关 键 词: | 临界热流密度(CHF) 氟利昂 流体模化 CHF查询表(LUT) |
收稿时间: | 2021-10-26 |
Assessment of LUT-2006 Subcooled CHF Prediction at PWR Conditions with Freon CHF Data |
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Affiliation: | School of Energy and Power Engineering, Xi’an Jiaotong University, Xian, 710049, China |
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Abstract: | 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. |
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