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Heat Transfer Investigation of an Additively Manufactured Minichannel Heat Exchanger
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.ORCID iD: 0000-0002-8059-1546
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.ORCID iD: 0000-0001-8516-0609
KTH, School of Industrial Engineering and Management (ITM), Energy Technology.ORCID iD: 0000-0002-5672-5727
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2019 (English)In: Proceedings of the ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels, ASME Press, 2019, article id V001T01A001Conference paper, Published paper (Refereed)
Abstract [en]

This study investigates the thermal performance of laminar single-phase flow in an additively manufactured minichannel heat exchanger both experimentally and numerically. Distilled water was employed as the working fluid, and the minichannel heat exchanger was made from aluminum alloy (AlSi 1 0Mg) through direct metal laser sintering (DMLS). The minichannel was designed with a hydraulic diameter of 2.86 mm. The Reynolds number ranged from 175 to 1360, and the heat exchanger was tested under two different heat fluxes of 1.5 kWm(-2) and 3 kWm(-2). A detailed experiment was conducted to obtain the thermal properties of AlSi10Mg. Furthermore, the heat transfer characteristics of the minichannel heat exchanger was analyzed numerically by solving a three-dimensional conjugate heat transfer using the COMSOL Multiphysics to verify the experimental results. The experimental results were also compared to widely accepted correlations in literature. It is found that 95% and 79% of the experimental data are within 10% range of both the simulation results and the values from the existing correlations, respectively. Hence, the good agreement found between the experimental and simulation results highlights the possibility of the DMLS technique as a promising method for manufacturing future multiport minichannel heat exchangers.

Place, publisher, year, edition, pages
ASME Press, 2019. article id V001T01A001
Keywords [en]
Minichannel, Microchannel, Heat exchanger, Additive manufacturing, 3D printing, Comsol, CFD
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-266183ISI: 000501625700001ISBN: 978-0-7918-5873-8 (print)OAI: oai:DiVA.org:kth-266183DiVA, id: diva2:1385369
Conference
17th ASME International Conference on Nanochannels, Microchannels, and Minichannels (ICNMM 2019);JUN 23-26, 2019,St Johns, Canada
Note

QC 20200114

Available from: 2020-01-14 Created: 2020-01-14 Last updated: 2020-03-16Bibliographically approved

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Rastan, HamidrezaAbdi, AmirIgnatowicz, MonikaHamawandi, BejanPalm, Björn

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