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논문 기본 정보

자료유형
학술저널
저자정보
이연건 (제주대학교) 임상규 (한국수력원자력(주)한수원중앙연구원)
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제53권 제10호
발행연도
2021.10
수록면
3,196 - 3,206 (11page)
DOI
https://doi.org/10.1016/j.net.2021.04.024

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초록· 키워드

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For the Korean design of the PCCS (passive containment cooling system) in an innovative PWR, theoverall thermal resistance around a condenser tube is dominated by the heat transfer coefficient of steamcondensation on the exterior surface. It has been reported, however, that the calculated heat transfercoefficients by thermal-hydraulic system codes were much lower than measured data in separate effecttests. In this study, a new empirical model of steam condensation in the presence of a noncondensablegas was implemented into the MARS-KS 1.4 code to replace the conventional Colburn-Hougen model. The selected correlation had been developed from condensation test data obtained at the JERICHO (JNUExperimental Rig for Investigation of Condensation Heat transfer On tube) facility, and considered theeffect of the Grashof number for naturally circulating gas mixture and the curvature of the condensertube. The modified MARS-KS code was applied to simulate the transient response of the containmentequipped with the PCCS to the large-break loss-of-coolant accident. The heat removal performances ofthe PCCS and corresponding evolution of the containment pressure were compared to those calculatedvia the original model. Various thermal-hydraulic parameters associated with the natural circulationoperation through the heat transport circuit were also investigated

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