Cooling of a rectangular microchannel heat sink with ammonia gas
The increased global demands for the minimization of integrated circuits used in electronic devices have led manufacturing companies to direct their resources towards research in that area. The minimization processes provided very powerful electronic chips but with a very large amount of heat genera...
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American Institute of Physics
2012
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my.utm.345412017-02-04T06:12:23Z http://eprints.utm.my/id/eprint/34541/ Cooling of a rectangular microchannel heat sink with ammonia gas Adham, Ahmed Mohammed Mohd. Ghazali, Normah Ahmad, Robiah TJ Mechanical engineering and machinery The increased global demands for the minimization of integrated circuits used in electronic devices have led manufacturing companies to direct their resources towards research in that area. The minimization processes provided very powerful electronic chips but with a very large amount of heat generation. One of the methods applied to remove the heat produced is to use a microchannel heat sink. Past optimization attempts have looked at the microchannel geometry, material, and coolant types using various models to represent the heat sink. This paper reports the analytical study on the optimization of the thermal resistance and pressure drop of a rectangular microchannel heat sink using a new coolant, ammonia gas. The effect of different channel aspect ratio was investigated. Significant reduction in thermal resistance was obtained with 0.218 K/W for ammonia gas compared to that of 0.266 k/W for air under the same operating conditions. The total pressure drop achieved was 5.36 mbar and 9.52 mbar for ammonia and air respectively. The results indicate promising potential for ammonia gas as a coolant for rectangular microchannel heat sink. American Institute of Physics 2012 Book Section PeerReviewed Adham, Ahmed Mohammed and Mohd. Ghazali, Normah and Ahmad, Robiah (2012) Cooling of a rectangular microchannel heat sink with ammonia gas. In: 4Th International Meeting of Advances in Thermofluids (Imat 2011), Pt 1 And 2. American Institute of Physics, Melville, New York, pp. 57-64. ISBN 978-073541032-9 http://dx.doi.org/10.1063/1.4704203 DOI:10.1063/1.4704203 |
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TJ Mechanical engineering and machinery Adham, Ahmed Mohammed Mohd. Ghazali, Normah Ahmad, Robiah Cooling of a rectangular microchannel heat sink with ammonia gas |
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The increased global demands for the minimization of integrated circuits used in electronic devices have led manufacturing companies to direct their resources towards research in that area. The minimization processes provided very powerful electronic chips but with a very large amount of heat generation. One of the methods applied to remove the heat produced is to use a microchannel heat sink. Past optimization attempts have looked at the microchannel geometry, material, and coolant types using various models to represent the heat sink. This paper reports the analytical study on the optimization of the thermal resistance and pressure drop of a rectangular microchannel heat sink using a new coolant, ammonia gas. The effect of different channel aspect ratio was investigated. Significant reduction in thermal resistance was obtained with 0.218 K/W for ammonia gas compared to that of 0.266 k/W for air under the same operating conditions. The total pressure drop achieved was 5.36 mbar and 9.52 mbar for ammonia and air respectively. The results indicate promising potential for ammonia gas as a coolant for rectangular microchannel heat sink. |
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Book Section |
author |
Adham, Ahmed Mohammed Mohd. Ghazali, Normah Ahmad, Robiah |
author_facet |
Adham, Ahmed Mohammed Mohd. Ghazali, Normah Ahmad, Robiah |
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Adham, Ahmed Mohammed |
title |
Cooling of a rectangular microchannel heat sink with ammonia gas
|
title_short |
Cooling of a rectangular microchannel heat sink with ammonia gas
|
title_full |
Cooling of a rectangular microchannel heat sink with ammonia gas
|
title_fullStr |
Cooling of a rectangular microchannel heat sink with ammonia gas
|
title_full_unstemmed |
Cooling of a rectangular microchannel heat sink with ammonia gas
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title_sort |
cooling of a rectangular microchannel heat sink with ammonia gas |
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American Institute of Physics |
publishDate |
2012 |
url |
http://eprints.utm.my/id/eprint/34541/ http://dx.doi.org/10.1063/1.4704203 |
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1643649602877915136 |
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