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http://dx.doi.org/10.1016/j.net.2021.11.023

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)
Publication Information
Nuclear Engineering and Technology / v.54, no.5, 2022 , pp. 1874-1889 More about this Journal
Abstract
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.
Keywords
Printed circuit heat exchanger; Channel types and shape variables; Economic evaluation; Structure integrity assessment; Sodium-cooled fast reactor;
Citations & Related Records
Times Cited By KSCI : 12  (Citation Analysis)
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