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Introduction <p>The 2&#xa0;K laminated-finned heat exchanger (Lf-HX) enhances the efficiency of 2&#xa0;K superfluid helium production, a pivotal equipment in the cryogenic system of the China Initiative Accelerator Driven System (CiADS).</p> Materials and Methods <p>This study utilizes computational fluid dynamics (CFD) simulations and experimental methods to investigate the impact of environmental heat leaks, ranging from 0 to 15&#xa0;W, and flow rates from 1 to 5&#xa0;g/s on the Lf-HX’s performance.</p> Conclusion <p>The results show that the heat exchanger’s effectiveness declines with increased flow rates under low heat leakage conditions, but this trend inverts under higher heat leakage scenarios. CFD and experimental data reveal that the axial heat leakage of the Lf-HX is 10&#xa0;W/m<sup>2</sup>, and higher heat leakage reduces Lf-HX’s robustness. This study provides valuable data for the design and optimization of similar 2&#xa0;K heat exchangers.</p>

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Investigation of heat leakage and mass flow on performance of a 2 K superfluid laminated-finned heat exchanger for the CiADS project

  • 期刊论文

  • 发表日期：

    2025年1月15日

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  • Jun Wen,
  • Li-ming Zhu,
  • Xian-jin Wang,
  • Peng Zhang,
  • Yong-hui Yang,
  • Da-jun Fan,
  • Jun-hui Zhang,
  • Xiao-fei Niu

摘要

Introduction

The 2 K laminated-finned heat exchanger (Lf-HX) enhances the efficiency of 2 K superfluid helium production, a pivotal equipment in the cryogenic system of the China Initiative Accelerator Driven System (CiADS).

Materials and Methods

This study utilizes computational fluid dynamics (CFD) simulations and experimental methods to investigate the impact of environmental heat leaks, ranging from 0 to 15 W, and flow rates from 1 to 5 g/s on the Lf-HX’s performance.

Conclusion

The results show that the heat exchanger’s effectiveness declines with increased flow rates under low heat leakage conditions, but this trend inverts under higher heat leakage scenarios. CFD and experimental data reveal that the axial heat leakage of the Lf-HX is 10 W/m2, and higher heat leakage reduces Lf-HX’s robustness. This study provides valuable data for the design and optimization of similar 2 K heat exchangers.