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