Natural Graphite Sheet Heat Sinks With Embedded Heat Pipes
Natural graphite sheet (NGS) is a candidate material for lightweight, high-performance heat sinks. We show that the low through-plane thermal conductivity can be mitigated by using heat pipes. In the measured configuration, the thermal resistance of an NGS heat sink with embedded heat pipes is compa...
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doaj-8088f3cd575a4e049099ca993e93793e2021-03-30T02:37:17ZengIEEEIEEE Access2169-35362020-01-018808278083510.1109/ACCESS.2020.29888329072112Natural Graphite Sheet Heat Sinks With Embedded Heat PipesMartin Cermak0https://orcid.org/0000-0002-2244-3721Xavier Faure1Mohammad Ali Saket2Majid Bahrami3Martin Ordonez4Laboratory for Alternative Energy Conversion, School of Mechatronic Systems Engineering, Simon Fraser University, Surrey, BC, CanadaLaboratory for Alternative Energy Conversion, School of Mechatronic Systems Engineering, Simon Fraser University, Surrey, BC, CanadaElectrical and Computer Engineering Department, The University of British Columbia, Vancouver, BC, CanadaLaboratory for Alternative Energy Conversion, School of Mechatronic Systems Engineering, Simon Fraser University, Surrey, BC, CanadaElectrical and Computer Engineering Department, The University of British Columbia, Vancouver, BC, CanadaNatural graphite sheet (NGS) is a candidate material for lightweight, high-performance heat sinks. We show that the low through-plane thermal conductivity can be mitigated by using heat pipes. In the measured configuration, the thermal resistance of an NGS heat sink with embedded heat pipes is comparable to that of a geometrically-identical aluminum one. The achieved weight reduction is 37 %. When electrical insulation of a heat sink is not required, soft and conforming NGS does not require thermal grease at the interface between the heat source and the heat sink. The low electrical conductivity of NGS does not lead to a decrease in common mode conducted emissions, but the potential to reduce the radiated emissions was quantified to be 12 to 97 % based on an analogy with antennas. In practical applications, replacing an existing heat sink with a geometrically identical NGS one is not recommended because it limits the achievable improvements in thermal performance, weight, and cost. Instead, we suggest using an optimization algorithm to determine the optimal heat sink geometry.https://ieeexplore.ieee.org/document/9072112/Aerospace materialscarboncircuit noiseconducted emissionselectromagnetic complianceelectromagnetic interference |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Martin Cermak Xavier Faure Mohammad Ali Saket Majid Bahrami Martin Ordonez |
spellingShingle |
Martin Cermak Xavier Faure Mohammad Ali Saket Majid Bahrami Martin Ordonez Natural Graphite Sheet Heat Sinks With Embedded Heat Pipes IEEE Access Aerospace materials carbon circuit noise conducted emissions electromagnetic compliance electromagnetic interference |
author_facet |
Martin Cermak Xavier Faure Mohammad Ali Saket Majid Bahrami Martin Ordonez |
author_sort |
Martin Cermak |
title |
Natural Graphite Sheet Heat Sinks With Embedded Heat Pipes |
title_short |
Natural Graphite Sheet Heat Sinks With Embedded Heat Pipes |
title_full |
Natural Graphite Sheet Heat Sinks With Embedded Heat Pipes |
title_fullStr |
Natural Graphite Sheet Heat Sinks With Embedded Heat Pipes |
title_full_unstemmed |
Natural Graphite Sheet Heat Sinks With Embedded Heat Pipes |
title_sort |
natural graphite sheet heat sinks with embedded heat pipes |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2020-01-01 |
description |
Natural graphite sheet (NGS) is a candidate material for lightweight, high-performance heat sinks. We show that the low through-plane thermal conductivity can be mitigated by using heat pipes. In the measured configuration, the thermal resistance of an NGS heat sink with embedded heat pipes is comparable to that of a geometrically-identical aluminum one. The achieved weight reduction is 37 %. When electrical insulation of a heat sink is not required, soft and conforming NGS does not require thermal grease at the interface between the heat source and the heat sink. The low electrical conductivity of NGS does not lead to a decrease in common mode conducted emissions, but the potential to reduce the radiated emissions was quantified to be 12 to 97 % based on an analogy with antennas. In practical applications, replacing an existing heat sink with a geometrically identical NGS one is not recommended because it limits the achievable improvements in thermal performance, weight, and cost. Instead, we suggest using an optimization algorithm to determine the optimal heat sink geometry. |
topic |
Aerospace materials carbon circuit noise conducted emissions electromagnetic compliance electromagnetic interference |
url |
https://ieeexplore.ieee.org/document/9072112/ |
work_keys_str_mv |
AT martincermak naturalgraphitesheetheatsinkswithembeddedheatpipes AT xavierfaure naturalgraphitesheetheatsinkswithembeddedheatpipes AT mohammadalisaket naturalgraphitesheetheatsinkswithembeddedheatpipes AT majidbahrami naturalgraphitesheetheatsinkswithembeddedheatpipes AT martinordonez naturalgraphitesheetheatsinkswithembeddedheatpipes |
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1724184851518586880 |