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Design analysis of the 'Schwartz D' based heat exchanger: A numerical study

机译：“施瓦茨D”换热器的设计分析：数值研究

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摘要

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.
机译：三个周期性最小表面（TPMS）具有有前途的热物理性质，这使得它们在生产低温废热回收系统中的合适候选者。 TPM热性能连接到孔内的复杂流动图案及其与壁的相互作用。遗憾的是，实验研究由于TPMS内部的流动模式复杂性和视觉限制，TPMS热交换器的设计分析和优化是复杂的。在该研究中，进行了三维稳态，用于层层不可压缩的流动的缀合物传热（CHT）模拟，以量化基于TPMS的热交换器的性能。基于Schwartz D架构的TPM格式被建模，以阐明设计参数，并在不同壁厚下建立气体速度，传热和TPMS的热性能之间的关系。在这项研究中，检查来自相同架构的四种类型的晶格，用于一系列气体速度，一个设计被发现是提供最高热性能的优化晶格。这里呈现的结果和方法可以促进TPMS-热交换器的制造，以便在低间距热系统中回收废热。

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