Effect of wall resistance on the total thermal resistance of a stacked microchannel heat sink
This paper reports on the different modeling approach of the total thermal resistance in a microchannel heat sink (MCHS); with wall resistance and the frequently used fin model, in comparison with experimental results. For a single stack MCHS, the wall model caused more than 10% difference but it ca...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Novel Carbon Resource Sciences
2021
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| Subjects: | |
| Online Access: | http://eprints.utm.my/94774/1/NormahMohdGhazali2021_EffectofWallResistance.pdf |
| _version_ | 1796865889221476352 |
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| author | Shamsuddin, H. S. Abidin, U. Zaidan, H. A. Ghazali, N. M. |
| author_facet | Shamsuddin, H. S. Abidin, U. Zaidan, H. A. Ghazali, N. M. |
| author_sort | Shamsuddin, H. S. |
| collection | ePrints |
| description | This paper reports on the different modeling approach of the total thermal resistance in a microchannel heat sink (MCHS); with wall resistance and the frequently used fin model, in comparison with experimental results. For a single stack MCHS, the wall model caused more than 10% difference but it can be extended to a stacked MCHS while the fin model could not, due to the adiabatic top condition. The wall resistance model is idealized, assuming a 100% efficient convective heat transfer while in the fin model 70% was the maximum. Meanwhile, stacking showed that at a constant flow rate, the thermal resistance could be reduced by 3% for a double stack, while increasing beyond that will decrease the thermal performance of the MCHS. The study showed the limits of models used and possible stacking of a MCHS for improved heat removal capability. |
| first_indexed | 2024-03-05T21:03:57Z |
| format | Article |
| id | utm.eprints-94774 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T21:03:57Z |
| publishDate | 2021 |
| publisher | Novel Carbon Resource Sciences |
| record_format | dspace |
| spelling | utm.eprints-947742022-04-29T21:54:10Z http://eprints.utm.my/94774/ Effect of wall resistance on the total thermal resistance of a stacked microchannel heat sink Shamsuddin, H. S. Abidin, U. Zaidan, H. A. Ghazali, N. M. TJ Mechanical engineering and machinery This paper reports on the different modeling approach of the total thermal resistance in a microchannel heat sink (MCHS); with wall resistance and the frequently used fin model, in comparison with experimental results. For a single stack MCHS, the wall model caused more than 10% difference but it can be extended to a stacked MCHS while the fin model could not, due to the adiabatic top condition. The wall resistance model is idealized, assuming a 100% efficient convective heat transfer while in the fin model 70% was the maximum. Meanwhile, stacking showed that at a constant flow rate, the thermal resistance could be reduced by 3% for a double stack, while increasing beyond that will decrease the thermal performance of the MCHS. The study showed the limits of models used and possible stacking of a MCHS for improved heat removal capability. Novel Carbon Resource Sciences 2021 Article PeerReviewed application/pdf en http://eprints.utm.my/94774/1/NormahMohdGhazali2021_EffectofWallResistance.pdf Shamsuddin, H. S. and Abidin, U. and Zaidan, H. A. and Ghazali, N. M. (2021) Effect of wall resistance on the total thermal resistance of a stacked microchannel heat sink. Evergreen, 8 (1). ISSN 2189-0420 http://dx.doi.org/10.5109/4372270 DOI: 10.5109/4372270 |
| spellingShingle | TJ Mechanical engineering and machinery Shamsuddin, H. S. Abidin, U. Zaidan, H. A. Ghazali, N. M. Effect of wall resistance on the total thermal resistance of a stacked microchannel heat sink |
| title | Effect of wall resistance on the total thermal resistance of a stacked microchannel heat sink |
| title_full | Effect of wall resistance on the total thermal resistance of a stacked microchannel heat sink |
| title_fullStr | Effect of wall resistance on the total thermal resistance of a stacked microchannel heat sink |
| title_full_unstemmed | Effect of wall resistance on the total thermal resistance of a stacked microchannel heat sink |
| title_short | Effect of wall resistance on the total thermal resistance of a stacked microchannel heat sink |
| title_sort | effect of wall resistance on the total thermal resistance of a stacked microchannel heat sink |
| topic | TJ Mechanical engineering and machinery |
| url | http://eprints.utm.my/94774/1/NormahMohdGhazali2021_EffectofWallResistance.pdf |
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