Triply Periodic Minimal Surfaces (TPMS) have promising thermophysical properties, which makes them a suitable candidate in the production of low-temperature waste heat recovery systems. A TPMS thermal performance is connected to the complex flow patterns inside the pores and their interactions with the walls. Unfortunately, the experimental study’s design analysis and optimization of TPMS heat exchangers are complicated due to the flow pattern complexity and visual limitations inside the TPMS. In this study, three-dimensional steady-state, conjugate heat transfer (CHT) simulations for laminar incompressible flow were carried out to quantify the performance of a TPMS based heat exchanger. TPMS Lattices based on Schwartz D architecture was modeled to elucidate the design parameters and establishing relationships between gas velocity, heat transfer, and thermal performance of TPMS at different wall thicknesses. In this study, four types of lattices from the same architectures with varying wall thickness were examined for a range of the gas velocity, with one design found to be the optimized lattice providing the highest thermal performance. The results and methodology presented here can facilitate improvements in TPMS-heat exchangers’ fabrication for recycling the waste heat in low pitch thermal systems.

三重周期最小表面 (TPMS) 具有良好的热物理特性，这使其成为生产低温废热回收系统的合适候选材料。TPMS 热性能与孔内复杂的流动模式及其与壁的相互作用有关。不幸的是，由于 TPMS 内部的流型复杂性和视觉限制，TPMS 换热器的实验研究设计分析和优化很复杂。在这项研究中，对不可压缩层流进行了三维稳态共轭传热 (CHT) 模拟，以量化基于 TPMS 的换热器的性能。对基于 Schwartz D 架构的 TPMS 晶格进行建模，以阐明设计参数并建立气体速度、传热、TPMS 在不同壁厚下的热性能。在这项研究中，针对一定范围的气体速度检查了来自相同结构且壁厚不同的四种类型的晶格，其中一种设计是提供最高热性能的优化晶格。这里介绍的结果和方法可以促进 TPMS 热交换器制造的改进，以回收低节距热系统中的废热。