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现行 VA-89-18-3
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Heat and Mass Transfer around One-Row Tube Bank Simulating Containment Fan Cooler under Post-Accident Condition in Nuclear Power Plant 核电站事故后单排管束模拟安全壳风机冷却器的传热传质
将实验测量值与理论预测值进行比较,预测热空气和高湿空气(130°C,水蒸气含量的0至60 wt%)到水平冷却管(摇摆温度约40°C)的传热和传质,水平冷却管模拟的是压水反应堆事故后条件下安全壳风机冷却器的传热管。结果表明:(1)在目前的实验条件下,建立了传热传质系数公式;(2) 当主流中的水蒸气浓度从0%增加到60%时,对流和冷凝传热传质系数大约增加一倍; (3) 在冷凝条件下,对流/冷凝传热数据的绝对值分别大于/小于Rose和Fujii方程的估计值,尽管方程的斜率与测量数据的斜率一致。引用:研讨会,ASHRAE Trans。,第95卷,第。2.
Experimental measurements are compared with theoretical predictions for heat and mass transfer from hot and highly humid air (130°C, 0 to 60 wt% of water vapor content) to horizontal cooling tubes (waft temperature around 40°C), which are simulating the heat-transfer tubes of a containment fan cooler in the postaccident condition of a pressurized water reactor. As the results, (1) heat and mass transfer coefficients are formulated for the present experimental conditions; (2) when the water vapor concentration in the main flow is increased from 0 to 60 wt%, the convective and condensational heat and mass transfer coefficients are approximately doubled; (3) under the condition of condensation, the absolute values of the convective/condensational heat transfer data are greater/smaller than those estimated by the equations of Rose and Fujii, respectively, though the slope of the equation agrees with that of the measuredata.
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