High performance, microarchitected, compact heat exchanger enabled by 3D printing

Dixit, T., Al-Hajri, E., Paul, M. C. , Nithiarasu, P. and Kumar, S. (2022) High performance, microarchitected, compact heat exchanger enabled by 3D printing. Applied Thermal Engineering, 210, 118339. (doi: 10.1016/j.applthermaleng.2022.118339)

Abstract

Additive manufacturing has created a paradigm shift in materials design and innovation, providing avenues and opportunities for geometric design freedom and customizations. Here, we report a microarchitected gyroid lattice liquid-liquid compact heat exchanger realized via stereolithography additive manufacturing as a single ready-to-use unit. This lightweight (∼240 kg/m3) compact heat exchanger (with conjoined headers), with an engineered porosity of 80% and a separating wall thickness of 300 μm, has a surface to volume ratio of 670 m2/m3. X-ray computed tomography imaging confirms a defect-free 3D printed heat exchanger. The thermo-hydraulic characteristics were experimentally measured using water as the working fluid. The measurements indicate that the heat exchanger evinces an overall heat transfer coefficient of for hot fluid Reynolds number in the range of . Additionally, finite element analysis was conducted to evaluate the thermo-hydraulic characteristics of the gyroid lattice heat exchanger. The experimental results show an increase in exchanger effectiveness for the additively manufactured gyroid lattice heat exchanger in comparison to a thermodynamically equivalent, most-efficient, counter-flow heat exchanger at one tenth of its size. The superiority of our architected heat exchanger to extant work is also demonstrated.

• Item Type: Articles
• Additional Information: The authors would like to thank to Abu Dhabi National Oil Company (ADNOC) for providing the research grant (Award No: EX2016-000010). S. Kumar would like to thank the University of Glasgow for the start-up grant [Award No: 144690-01].
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Paul, Professor Manosh and Kumar, Professor Shanmugam
• Authors: Dixit, T., Al-Hajri, E., Paul, M. C., Nithiarasu, P., and Kumar, S.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: Applied Thermal Engineering
• Publisher: Elsevier
• ISSN: 1359-4311
• ISSN (Online): 1873-5606
• Published Online: 18 March 2022
• Copyright Holders: Copyright © 2022 The Authors
• First Published: First published in Applied Thermal Engineering 210: 118339
• Publisher Policy: Reproduced under a Creative Commons License

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