Design and Fabrication of Heat Exchangers Using Thermally Conductive Polymer Composite

Polymer heat exchangers (HXs) are lightweight and cost-effective due to the affordability of raw polymer materials. However, the inherently low thermal conductivity (TC) of polymers limits their application in HXs. To enhance thermal conductivity polymer composites, two types of diamond powders, wit...

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Main Authors: Jian Liu, David Cheng, Wang Pan, Khin Oo, Ty-Liyiah McCrimmon, Shuang Bai
Format: Article
Language:English
Published: MDPI AG 2025-05-01
Series:Applied Mechanics
Subjects:
Online Access:https://www.mdpi.com/2673-3161/6/2/38
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author Jian Liu
David Cheng
Wang Pan
Khin Oo
Ty-Liyiah McCrimmon
Shuang Bai
author_facet Jian Liu
David Cheng
Wang Pan
Khin Oo
Ty-Liyiah McCrimmon
Shuang Bai
author_sort Jian Liu
collection DOAJ
description Polymer heat exchangers (HXs) are lightweight and cost-effective due to the affordability of raw polymer materials. However, the inherently low thermal conductivity (TC) of polymers limits their application in HXs. To enhance thermal conductivity polymer composites, two types of diamond powders, with particle sizes of 0.25 µm and 16.7 µm, were used as fillers, while Acrylonitrile Butadiene Styrene (ABS) served as the matrix. Composite polymer samples were fabricated, and their density and thermal conductivity were tested and compared. The results indicate that fillers with larger particle sizes tend to exhibit higher thermal conductivity. A polymer HX based on a Triply Periodic Minimal Surface (TPMS) structure was designed. The factors influencing the efficiency of polymer HXs were analyzed and compared with those of metal HXs. In polymer HXs, the polymer wall is the primary source of heat resistance. Additionally, the mechanical strength of 3D-printed polymer parts was evaluated. Finally, an HX was successfully fabricated using a polymer composite containing 50 wt% diamond powder via 3D printing.
format Article
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institution Kabale University
issn 2673-3161
language English
publishDate 2025-05-01
publisher MDPI AG
record_format Article
series Applied Mechanics
spelling doaj-art-b9cb747e46a94035a088219fe4bc16fb2025-08-20T03:26:25ZengMDPI AGApplied Mechanics2673-31612025-05-01623810.3390/applmech6020038Design and Fabrication of Heat Exchangers Using Thermally Conductive Polymer CompositeJian Liu0David Cheng1Wang Pan2Khin Oo3Ty-Liyiah McCrimmon4Shuang Bai5PolarOnyx, Inc., 144 Old Lystra Road, Unit 2, Chapel Hill, NC 27517, USAPolarOnyx, Inc., 144 Old Lystra Road, Unit 2, Chapel Hill, NC 27517, USAPolarOnyx, Inc., 144 Old Lystra Road, Unit 2, Chapel Hill, NC 27517, USAPolarOnyx, Inc., 144 Old Lystra Road, Unit 2, Chapel Hill, NC 27517, USAPolarOnyx, Inc., 144 Old Lystra Road, Unit 2, Chapel Hill, NC 27517, USAPolarOnyx, Inc., 144 Old Lystra Road, Unit 2, Chapel Hill, NC 27517, USAPolymer heat exchangers (HXs) are lightweight and cost-effective due to the affordability of raw polymer materials. However, the inherently low thermal conductivity (TC) of polymers limits their application in HXs. To enhance thermal conductivity polymer composites, two types of diamond powders, with particle sizes of 0.25 µm and 16.7 µm, were used as fillers, while Acrylonitrile Butadiene Styrene (ABS) served as the matrix. Composite polymer samples were fabricated, and their density and thermal conductivity were tested and compared. The results indicate that fillers with larger particle sizes tend to exhibit higher thermal conductivity. A polymer HX based on a Triply Periodic Minimal Surface (TPMS) structure was designed. The factors influencing the efficiency of polymer HXs were analyzed and compared with those of metal HXs. In polymer HXs, the polymer wall is the primary source of heat resistance. Additionally, the mechanical strength of 3D-printed polymer parts was evaluated. Finally, an HX was successfully fabricated using a polymer composite containing 50 wt% diamond powder via 3D printing.https://www.mdpi.com/2673-3161/6/2/38thermal conductivitythermally conductive polymer compositesdiamond powderaluminum powderheat exchanger
spellingShingle Jian Liu
David Cheng
Wang Pan
Khin Oo
Ty-Liyiah McCrimmon
Shuang Bai
Design and Fabrication of Heat Exchangers Using Thermally Conductive Polymer Composite
Applied Mechanics
thermal conductivity
thermally conductive polymer composites
diamond powder
aluminum powder
heat exchanger
title Design and Fabrication of Heat Exchangers Using Thermally Conductive Polymer Composite
title_full Design and Fabrication of Heat Exchangers Using Thermally Conductive Polymer Composite
title_fullStr Design and Fabrication of Heat Exchangers Using Thermally Conductive Polymer Composite
title_full_unstemmed Design and Fabrication of Heat Exchangers Using Thermally Conductive Polymer Composite
title_short Design and Fabrication of Heat Exchangers Using Thermally Conductive Polymer Composite
title_sort design and fabrication of heat exchangers using thermally conductive polymer composite
topic thermal conductivity
thermally conductive polymer composites
diamond powder
aluminum powder
heat exchanger
url https://www.mdpi.com/2673-3161/6/2/38
work_keys_str_mv AT jianliu designandfabricationofheatexchangersusingthermallyconductivepolymercomposite
AT davidcheng designandfabricationofheatexchangersusingthermallyconductivepolymercomposite
AT wangpan designandfabricationofheatexchangersusingthermallyconductivepolymercomposite
AT khinoo designandfabricationofheatexchangersusingthermallyconductivepolymercomposite
AT tyliyiahmccrimmon designandfabricationofheatexchangersusingthermallyconductivepolymercomposite
AT shuangbai designandfabricationofheatexchangersusingthermallyconductivepolymercomposite