<p>To enhance the heat-transfer performance of thermoelectric cooling (TEC) modules, this study proposes a heat exchanger design strategy based on triply periodic minimal surface (TPMS) structures. Numerical simulations were conducted to analyze the cooling performance and heat-transfer mechanisms of three representative TPMS configurations, namely Gyroid (G-type), Diamond (D-type), and Schwarz P (P-type), and their performance was compared with that of a fins heat exchanger. The numerical results show that, within the inlet airflow velocity range of 1–7&#xa0;m/s, the three TPMS heat exchangers provide stronger heat-transfer capability and better TEC module cooling performance than the fins heat exchanger. Among them, the D-type heat exchanger exhibits the best convective heat-transfer performance and TEC <i>COP</i>. At an inlet airflow velocity of 3&#xa0;m/s, the average convective heat-transfer coefficient of the D-type heat exchanger reaches 453.6 W/m<sup>2</sup>·K, which is 252.8% higher than that of the fins heat exchanger. Meanwhile, the <i>COP</i> of the TEC module reaches 1.99, representing an improvement of 87.3% compared with the fins heat exchanger. In addition, experimental validation was conducted, and the results show good agreement between the numerical simulations and experimental data. These findings indicate that TPMS-based heat exchangers provide a promising design strategy for further improving the cooling performance of TEC modules.</p>

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Design and performance analysis of TPMS heat exchanger for thermoelectric cooling modules

  • Junwei Hu,
  • Ping Wei,
  • Ziyao Kuang,
  • Longzhou Li,
  • Anji Liang,
  • Yu Zhang,
  • Danqi He,
  • Wanting Zhu,
  • Xiaolei Nie,
  • Qiqi Tian,
  • Wenyu Zhao

摘要

To enhance the heat-transfer performance of thermoelectric cooling (TEC) modules, this study proposes a heat exchanger design strategy based on triply periodic minimal surface (TPMS) structures. Numerical simulations were conducted to analyze the cooling performance and heat-transfer mechanisms of three representative TPMS configurations, namely Gyroid (G-type), Diamond (D-type), and Schwarz P (P-type), and their performance was compared with that of a fins heat exchanger. The numerical results show that, within the inlet airflow velocity range of 1–7 m/s, the three TPMS heat exchangers provide stronger heat-transfer capability and better TEC module cooling performance than the fins heat exchanger. Among them, the D-type heat exchanger exhibits the best convective heat-transfer performance and TEC COP. At an inlet airflow velocity of 3 m/s, the average convective heat-transfer coefficient of the D-type heat exchanger reaches 453.6 W/m2·K, which is 252.8% higher than that of the fins heat exchanger. Meanwhile, the COP of the TEC module reaches 1.99, representing an improvement of 87.3% compared with the fins heat exchanger. In addition, experimental validation was conducted, and the results show good agreement between the numerical simulations and experimental data. These findings indicate that TPMS-based heat exchangers provide a promising design strategy for further improving the cooling performance of TEC modules.