A complex but accurate correlation for predicting critical heat flux in a round tube for low and medium pressures under circumferentially non-uniform heating conditions
A complex but accurate correlation for predicting critical heat flux in a round tube for low and medium pressures under circumferentially non-uniform heating conditions
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复杂但准确的相关性，用于预测圆周不均匀加热条件下低压和中压圆管中的临界热通量
DOI：
10.1016/j.ijheatmasstransfer.2007.06.013
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
A. Teyssedou
中科院分区：
文献类型：
--
作者：
A. Olekhnovitch;J. Sun;A. Teyssedou
本文提出了一种预测中、低压圆管内蒸汽-水垂直向上流动临界热流密度（CHF）的经验关系式。这种相关性是基于内径为22mm，加热长度为1.8至3.5m的测试段进行的实验得出的。最大和最小热通量之比分别为1.0、4.7和8.3。实验的出口压力和质量流量分别为10 ~ 40bar和300 ~ 1600kgm−2s−1。利用所提出的相关性和热平衡法预测CHF值的均方根误差为3.7%。
This paper presents an empirical correlation for predicting the critical heat flux (CHF) of vertical, upward, steam–water flows in round tubes for low and medium pressures under circumferentially non-uniform heating conditions. This correlation is based on experiments carried out with test sections having an inner diameter of 22mm and heated lengths ranging from 1.8 to 3.5m. The ratios between the maximum and the minimum heat fluxes were 1.0, 4.7 and 8.3. The experiments were carried out for outlet pressures and mass fluxes ranging from 10 to 40bar and 300 to 1600kgm−2s−1, respectively. The root mean square error of predicted CHF values by using the proposed correlation and applying the heat balance method is 3.7%.