Nuclear Engineering and Technology

  • 제53권12호
  • /
  • Pages.3892-3901
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  • 2021
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Development of a prediction model relating the two-phase pressure drop in a moisture separator using an air/water test facility

  • Kim, Kihwan (Innovative System Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Lee, Jae bong (Innovative System Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Kim, Woo-Shik (Innovative System Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Choi, Hae-seob (Innovative System Safety Research Division, Korea Atomic Energy Research Institute) ;
  • Kim, Jong-In (Nuclear Power Plant BG, Doosan Heavy Industries & Construction)
  • 투고 : 2021.03.19
  • 심사 : 2021.06.05
  • 발행 : 2021.12.25
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초록

The pressure drop of a moisture separator in a steam generator is the important design parameter to ensure the successful performance of a nuclear power plant. The moisture separators have a wide range of operating conditions based on the arrangement of them. The prediction of the pressure drop in a moisture separator is challenging due to the complexity of the multi-dimensional two-phase vortex flow. In this study, the moisture separator test facility using the air/water two-phase flow was used to predict the pressure drop of a moisture separator in a Korean OPR-1000 reactor. The prototypical steam/water two-phase flow conditions in a steam generator were simulated as air/water two-phase flow conditions by preserving the centrifugal force and vapor quality. A series of experiments were carried out to investigate the effect of hydraulic characteristics such as the quality and liquid mass flux on the two-phase pressure drop. A new prediction model based on the scaling law was suggested and validated experimentally using the full and half scale of separators. The suggested prediction model showed good agreement with the steam/water experimental results, and it can be extended to predict the steam/water two-phase pressure drop for moisture separators.

키워드

과제정보

This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean government (MOTIE) (20181510102390, Localization of Westinghouse Steam Generator Submerged Separator).

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