Experiments on convection heat transfer along a vertical flat plate between pools with different temperatures
Experiments on convection heat transfer along a vertical flat plate between pools with different temperatures
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DOI：
10.13182/nt92-a34722
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发表时间：
1992-09
影响因子：
1.5
通讯作者：
Y. Kataoka;Tohru Fukui;S. Hatamiya;T. Nakao;M. Naitoh;I. Sumida
中科院分区：
文献类型：
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作者：
Y. Kataoka;Tohru Fukui;S. Hatamiya;T. Nakao;M. Naitoh;I. Sumida
为了评价作为安全壳冷却被动系统的外水壁式安全壳的散热能力，对消气池和外池中的热工水力行为进行了实验研究。结果表明：在排气口正下方观察到热层结边界，该边界将熔池分为上高温区和下低温区。测量了主安全壳内外向下和向上流动的自然对流换热系数(HTCs)。沿着长壁测量了在不凝结气体存在下的凝结HTC，它影响了湿井和外池之间的传热。在此基础上，对某600 MW电厂外水冷壁式安全壳的散热能力进行了评估，认为其具有足够大的排热能力。
This paper reports that to evaluate the heat removal capability of an external water wall-type containment vessel, which is a passive system for containment cooling, thermal-hydraulic behavior in the suppression and outer pools has been examined experimentally. The following results are obtained: A thermal stratification boundary, which separates the pools into an upper high-temperature region and a lower low-temperature region, is observed just below the vent outlet. The natural-convection heat transfer coefficients (HTCs) for the downward and upward flows that appear inside and outside the primary containment vessel wall are measured. The condensation HTCs in the presence of non-condensable gas, which affect heat transfer between the wet well and the outer pool, are measured along the long wall. The capability for decay heat removal in the external water wall-type containment vessel for a 600-MW (electric) plant is evaluated based on these results and is found to be large enough.