Simulation analysis of a passive containment cooling system based on the RELAP5 program

Author(s): Likai Fei, Shengjun Zhang, Feng Shen, Bin Gao, Xianke Meng, Dandan He
State Power Investment Corporation Research Institute State Power Investment Corporation Research Institute, South Zone of the Future Science & Technology Park, Beijing, 102209, China
International Journal of Smart Grid and Clean Energy, vol. 8, no. 2, March 2019: pp. 184-190
ISSN: 2315-4462 (Print)
ISSN: 2373-3594 (Online)
Digital Object Identifier: 10.12720/sgce.8.2.184-190

Abstract: Based on previous proposals for a new type of nuclear power plant with passive containment heat transfer following an accident, this work utilizes the RELAP5 program to establish a thermal hydraulic model test system. Focusing on a test circuit with a single natural circulation loop, a parameter sensitivity analysis was performed by changing parameters, such as ambient pressure, ambient temperature, and degree of surface undercooling, and the design boundary conditions for a single natural circulation test circuit were obtained. Employing a comprehensive natural circulation test circuit, the heat transfer capability of the air-cooling system of the integrated test system was
evaluated by assuming parameters such as the cold source ambient temperature, providing an important reference for the design of the main equipment.

Keywords: passive cooling system, natural circulation, simulation calculation, RELAP5
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