Investigation on the flow and heat transfer of a novel three-fluid heat exchanger based on TPMS

Xiaofei Wei, Yejian Qian, Yao Li, Zhen Gong, Mingyao Yao, Duode Qian and Biqian Hu

Energy, 2025, vol. 314, issue C

Abstract: To reduce the number of heat exchangers (HEs) in thermal management systems and minimize the interactions between them, this study performs topology optimization based on the TPMS equation to design a three-fluid HE. Furthermore, fins are incorporated into the three-fluid HE. The influence mechanisms of the TPMS structure, solid volume fraction (Sv) and fin on the flow and heat transfer performance of the three-fluid HE are revealed. Results show that: (1) The three-fluid HE enables efficient heat exchange between each flow channel and air, maintaining high consistency in air temperature and velocity. (2) Compared to Gyroid heat exchanger (G-HE), Diamond heat exchanger (D-HE) exhibits a significantly higher heat transfer coefficient. The heat transfer coefficient of D-HE is approximately 3.1 times that of G-HE. (3) Increasing the Sv enhances the heat transfer performance of the HE, while also increasing flow resistance. When the Sv increases from 7 % to 13 %, the Nu and f on the cold side of the D-HE increase by 34 % and 19.6 %, respectively, while those for the G-HE increase by 13.2 % and 5.9 %. The three-fluid HE enhances the integration of the thermal management system and plays a crucial role in improving the reliability and stability of the system.

Keywords: TPMS; Three-fluid heat exchanger; Flow and heat transfer (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:314:y:2025:i:c:s0360544224038507

DOI: 10.1016/j.energy.2024.134072

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