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One key component of the S-CO2 Brayton cycle system is the heat exchanger. It must offer high-temperature and high-pressure resistance, safety, reliability, and efficient heat transfer. The performance of the heat exchanger significantly impacts the overall system performance. In this chapter, a microtube-type heat exchanger, designed using 3D printing, is analyzed. Numerical simulation methods are used to evaluate the thermal-hydraulic performance of the heat exchanger under various operating conditions. Compared to a reference printed circuit heat exchanger (PCHE), the results show an improvement in heat transfer performance by 13.6–25.4%, and overall performance increases by 11.5–20.2%.

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Simulation Analysis of Thermal-Hydraulic Performance and Heat Transfer Enhancement Structure of 3D Printed Compact Heat Exchanger

  • 章节

  • 发表日期：

    2025年

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  • Junxiang Zhao,
  • Minyun Liu,
  • Yansong Han,
  • Ruilong Liu,
  • Junjie Fei,
  • Yanping Huang

摘要

One key component of the S-CO2 Brayton cycle system is the heat exchanger. It must offer high-temperature and high-pressure resistance, safety, reliability, and efficient heat transfer. The performance of the heat exchanger significantly impacts the overall system performance. In this chapter, a microtube-type heat exchanger, designed using 3D printing, is analyzed. Numerical simulation methods are used to evaluate the thermal-hydraulic performance of the heat exchanger under various operating conditions. Compared to a reference printed circuit heat exchanger (PCHE), the results show an improvement in heat transfer performance by 13.6–25.4%, and overall performance increases by 11.5–20.2%.