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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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Main Authors: Adham, Ahmed Mohammed, Mohd. Ghazali, Normah, Ahmad, Robiah
Format: Article
Published: 2012
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/46743/
http://dx.doi.org/10.1063/1.4704203
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spelling my.utm.467432017-09-19T01:51:26Z http://eprints.utm.my/id/eprint/46743/ Cooling of a rectangular microchannel heat sink with ammonia gas Adham, Ahmed Mohammed Mohd. Ghazali, Normah Ahmad, Robiah TP Chemical technology 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. 2012 Article PeerReviewed Adham, Ahmed Mohammed and Mohd. Ghazali, Normah and Ahmad, Robiah (2012) Cooling of a rectangular microchannel heat sink with ammonia gas. 4th International Meeting Of Advances In Thermofluids (Imat 2011), Pt 1 And 2, 1440 . pp. 57-64. ISSN 0094-243X http://dx.doi.org/10.1063/1.4704203
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Adham, Ahmed Mohammed
Mohd. Ghazali, Normah
Ahmad, Robiah
Cooling of a rectangular microchannel heat sink with ammonia gas
description 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.
format Article
author Adham, Ahmed Mohammed
Mohd. Ghazali, Normah
Ahmad, Robiah
author_facet Adham, Ahmed Mohammed
Mohd. Ghazali, Normah
Ahmad, Robiah
author_sort 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
title_sort cooling of a rectangular microchannel heat sink with ammonia gas
publishDate 2012
url http://eprints.utm.my/id/eprint/46743/
http://dx.doi.org/10.1063/1.4704203
_version_ 1643652127083462656
score 13.211869

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