Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Parametric analyses for the design of a closed-loop passive containment cooling system

  • Bang, Jungjin (Central Research Institute, Korea Hydro and Nuclear Power, Ltd.) ;
  • Hwang, Ji-Hwan (School of Energy Systems Engineering, Chung-Ang University) ;
  • Kim, Han Gon (Central Research Institute, Korea Hydro and Nuclear Power, Ltd.) ;
  • Jerng, Dong-Wook (School of Energy Systems Engineering, Chung-Ang University)
  • Received : 2020.05.11
  • Accepted : 2020.09.12
  • Published : 2021.04.25
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Abstract

A design parameter study is presented for the closed-loop type passive containment cooling system (PCCS) which is equipped with two heat exchangers: one installed at the inside of the containment and the other submerged in the water pool at the outside of the containment. A GOTHIC code model for PCCS performance analyses was set up and the design parameters such as the heat exchanger sizes, locations, and water pool tank volumes were analyzed to investigate the feasibility of installing this type of PCCS in PWRs like OPR-1000 being operated in Korea. We identified the size of the circulation loop and heat exchangers as major design parameters affecting the performance of PCCS. The analyses showed that the heat exchangers in the inside of the containment would be more influential on the heat removal capability of PCCS than that installed in the water pool at the outside of the containment. Hence, it was recommended to down-size the heat exchangers in the water pool to optimize PCCS without compromising its performance. Based on the parametric study, it was demonstrated that a closed-loop type PCCS could be designed sufficiently compact for installation in the available space within the containment of PWRs like OPR-1000.

Keywords

Acknowledgement

This research was partly supported by the Chung-Ang University Graduate Research Scholarship in 2017 and by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP: Ministry of Science, ICT and Future Planning) (No. NRF-2017M2B2B1072552).

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