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http://dx.doi.org/10.5762/KAIS.2021.22.5.554

Effects of Crud on reflood heat transfer in Nuclear Power Plant  

Yoo, Jin (School of Mechanical Engineering, Chungnam National University)
Kim, Byoung Jae (School of Mechanical Engineering, Chungnam National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.22, no.5, 2021 , pp. 554-560 More about this Journal
Abstract
CRUD (chalk river unidentified deposits) is a porous material deposited on the surface of nuclear fuel during nuclear power plant operation. The CRUD is composed of metal oxides, such as iron, nickel, and chromium. It is essential to investigate the effects of the CRUD layer on the wall heat transfer between the nuclear fuel surface and the coolant in the event of a nuclear accident. CRUD only negatively affects the temperature of the nuclear fuel due to heat resistance because the effects of the CRUD layer on two-phase boiling heat transfer are not considered. In this study, the physical property models for the porous CRUD layer were developed and implemented into the SPACE code. The effects of boiling heat transfer models on the peak cladding temperature and quenching were investigated by simulating a reflood experiment. The calculation results showed some positive effects of the CRUD layer.
Keywords
Nuclear Safety; CRUD; SPACE Code; Reflood; Peak Cladding Temperature;
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Times Cited By KSCI : 2  (Citation Analysis)
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