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

Attarzadeh, Reza ; Rovira, Marc ; Duwig, Christophe

International journal of heat and mass transfer, 2021-10, Vol.177, p.121415, Article 121415 [Periódico revisado por pares]

Oxford: Elsevier Ltd

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  • Título:
    Design analysis of the “Schwartz D” based heat exchanger: A numerical study
  • Autor: Attarzadeh, Reza ; Rovira, Marc ; Duwig, Christophe
  • Assuntos: Complexity ; Computational fluid dynamics ; Conjugate hear transfer ; Design analysis ; Design optimization ; Design parameters ; Flow distribution ; Fluid flow ; Heat exchanger ; Heat exchangers ; Heat recovery systems ; Incompressible flow ; Laminar flow ; Laminar heat transfer ; Low pitch materials ; Low temperature ; Minimal surfaces ; Schwartz D ; Thermophysical properties ; Triply periodic minimal surface ; Wall thickness ; Waste heat recovery
  • É parte de: International journal of heat and mass transfer, 2021-10, Vol.177, p.121415, Article 121415
  • Descrição: •A computational mass and heat transfer analysis in SchwartzD (TPMS) based heat exchanger to quantify the thermal performance of the heat exchanger and fluid flow inside TPMS.•Negligible pressure drop penalty in TPMS for the amount of heat taken away from the heat source compared to an empty channel.•TPMS wall thickness has a significant impact on the thermal performance of the heat exchanger.•Continuous decay of reverse flow inside and outside the heat exchanger with either decreasing wall thickness or reducing flow velocity.•The heat exchanger’s thermal performance can change as much as 250% by changing the cells’ wall thickness.•The intricate flow pattern inside TPMS created a quadratic relation between the effective area and Reynolds.•The impact of wall thickness is negligible for very low Reynolds (Re<25). 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.
  • Editor: Oxford: Elsevier Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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