Nuclear Engineering and Technology

  • 제54권5호
  • /
  • Pages.1874-1889
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  • 2022
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Evaluation of thermal-hydraulic performance and economics of Printed Circuit Heat Exchanger (PCHE) for recuperators of Sodium-cooled Fast Reactors (SFRs) using CO2 and N2 as working fluids

  • Lee, Su Won (Division of Advanced Nuclear Engineering, POSTECH) ;
  • Shin, Seong Min (Division of Advanced Nuclear Engineering, POSTECH) ;
  • Chung, SungKun (Department of Mechanical Engineering, POSTECH) ;
  • Jo, HangJin (Division of Advanced Nuclear Engineering, POSTECH)
  • 투고 : 2021.08.30
  • 심사 : 2021.11.28
  • 발행 : 2022.05.25
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초록

In this study, we evaluate the thermal-hydraulic performance and economics of Printed Circuit Heat Exchanger (PCHE) according to the channel types and associated shape variables for the design of recuperators with Sodium-cooled Fast Reactors (SFRs). To perform the evaluations with variables such as the Reynolds number, channel types, tube diameter, and shape variables, a code for the heat exchanger is developed and verified through a comparison with experimental results. Based on the code, the volume and pressure drop are calculated, and an economic assessment is conducted. The zigzag type, which has bending angle of 80° and a tube diameter of 1.9 mm, is the most economical channel type in a SFR using CO2 as the working fluid. For a SFR using N2, we recommend the airfoil type with vertical and horizontal numbers of 1.6 and 1.1, respectively. The airfoil type is superior when the mass flow rate is large because the operating cost changes significantly. When the mass flow rate is small, volume is a more important design parameter, therefore, the zigzag type is suitable. In addition, we conduct a sensitivity analysis based on the production cost of the PCHE to identify changes in optimal channel types.

키워드

과제정보

This research was supported by a National Research Foundation of South Korea (NRF) grant funded by the Korean government (MSIP) (NRF-2017M1A7A1A03072765). and we would like to thank Editage (www.editage.co.kr) for English language editing.

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