Experimental and numerical investigation of hydrothermal performance of a microchannel heat sink with pin fins
The hydrothermal performance of the microchannel heat sinks with different pin fins (PF-MCHS) is studied experimentally and numerically. Five pin fins, namely rectangular pin fin (RPF), backward triangular pin fin (BTPF), forward triangular pin fin (FTPF), diamond pin fin (DPF) and ellipsoidal pin f...
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| Published in | Case studies in thermal engineering Vol. 60; p. 104631 |
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| Main Authors | , , , , , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier Ltd
01.08.2024
Elsevier |
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| Online Access | Get full text |
| ISSN | 2214-157X 2214-157X |
| DOI | 10.1016/j.csite.2024.104631 |
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| Abstract | The hydrothermal performance of the microchannel heat sinks with different pin fins (PF-MCHS) is studied experimentally and numerically. Five pin fins, namely rectangular pin fin (RPF), backward triangular pin fin (BTPF), forward triangular pin fin (FTPF), diamond pin fin (DPF) and ellipsoidal pin fin (EPR) are integrated in the microchannel for enhancing heat transfer. The results show that the PF-MCHSs possess 51.8–94.8 % higher average Nusselt number than the conventional microchannel (CMC) without pin fins, which indicates that these pin fins all can cause significant heat enhancement in the microchannels. Among all finned microchannels, the MC- RPF and MC-BTPF can offer the larger Nusselt number than the other microchannels. In addition to the improved thermal performance, the pin fins also result in the larger apparent friction factor. Furthermore, taking the MC-RPF and MC-BTPF as examples, three non-dimensional parameters α = P/L, β = wp/hc and γ = lp/hc are proposed for optimizing the global characteristics of microchannels. The rise of Nussle number and apparent friction factor is often accompanied by a decrease in α, or an increase in β and γ. |
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| AbstractList | The hydrothermal performance of the microchannel heat sinks with different pin fins (PF-MCHS) is studied experimentally and numerically. Five pin fins, namely rectangular pin fin (RPF), backward triangular pin fin (BTPF), forward triangular pin fin (FTPF), diamond pin fin (DPF) and ellipsoidal pin fin (EPR) are integrated in the microchannel for enhancing heat transfer. The results show that the PF-MCHSs possess 51.8–94.8 % higher average Nusselt number than the conventional microchannel (CMC) without pin fins, which indicates that these pin fins all can cause significant heat enhancement in the microchannels. Among all finned microchannels, the MC- RPF and MC-BTPF can offer the larger Nusselt number than the other microchannels. In addition to the improved thermal performance, the pin fins also result in the larger apparent friction factor. Furthermore, taking the MC-RPF and MC-BTPF as examples, three non-dimensional parameters α = P/L, β = wp/hc and γ = lp/hc are proposed for optimizing the global characteristics of microchannels. The rise of Nussle number and apparent friction factor is often accompanied by a decrease in α, or an increase in β and γ. |
| ArticleNumber | 104631 |
| Author | Zhu, Yuan Wang, Guilian Xie, Dongdong Ding, Guifu Lai, Liyan Xu, Qiu Wang, Zhichun |
| Author_xml | – sequence: 1 givenname: Guilian surname: Wang fullname: Wang, Guilian email: wglwrc2016@126.com organization: School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, People's Republic of China – sequence: 2 givenname: Zhichun orcidid: 0009-0006-7513-7273 surname: Wang fullname: Wang, Zhichun organization: School of Electronic and Electrical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai, 201620, People's Republic of China – sequence: 3 givenname: Liyan surname: Lai fullname: Lai, Liyan organization: School of Science, Shanghai Institute of Technology, Shanghai, 201418, People's Republic of China – sequence: 4 givenname: Dongdong surname: Xie fullname: Xie, Dongdong organization: National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China – sequence: 5 givenname: Yuan surname: Zhu fullname: Zhu, Yuan organization: National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China – sequence: 6 givenname: Guifu surname: Ding fullname: Ding, Guifu organization: National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China – sequence: 7 givenname: Qiu surname: Xu fullname: Xu, Qiu organization: Faculty of Electronic Information Engineering, Huaiyin Institute of Technology, Huai'an, 223003, People's Republic of China |
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| CitedBy_id | crossref_primary_10_1016_j_ijthermalsci_2024_109382 crossref_primary_10_1016_j_csite_2025_105773 crossref_primary_10_1016_j_ijheatmasstransfer_2024_125875 crossref_primary_10_1016_j_icheatmasstransfer_2024_108557 crossref_primary_10_3390_en17215301 crossref_primary_10_1016_j_ijft_2025_101141 crossref_primary_10_1016_j_applthermaleng_2024_125234 crossref_primary_10_1016_j_applthermaleng_2025_125764 crossref_primary_10_1016_j_ijheatfluidflow_2024_109610 crossref_primary_10_1016_j_ijthermalsci_2025_109889 crossref_primary_10_1063_5_0232006 crossref_primary_10_1016_j_ijthermalsci_2025_109711 crossref_primary_10_1016_j_ijthermalsci_2025_109766 crossref_primary_10_3390_mi15080986 crossref_primary_10_1016_j_csite_2024_104877 crossref_primary_10_1016_j_tsep_2024_102915 crossref_primary_10_1088_2631_8695_ad885a crossref_primary_10_1002_htj_23198 crossref_primary_10_1016_j_csite_2024_105336 crossref_primary_10_1016_j_applthermaleng_2024_125132 crossref_primary_10_1016_j_ijthermalsci_2024_109562 crossref_primary_10_1016_j_icheatmasstransfer_2024_108321 crossref_primary_10_1016_j_applthermaleng_2024_124272 |
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| Keywords | Hydrothermal performance Microchannel Pressure drop Pin fin Heat transfer |
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| Title | Experimental and numerical investigation of hydrothermal performance of a microchannel heat sink with pin fins |
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