Experimental Study Thermal Performanceof Vapor Chamber Heat Spreader
碩士 === 淡江大學 === 機械與機電工程學系碩士班 === 101 === The vapor chamber heat spreader (VCHS) is a capillary driven planar heat pipe design with a small aspect ratio, can sustain high heat flux and even the temperature distribution on a flat plate surface. Experimental investigations are performed on copper and v...
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ndltd-TW-101TKU054890252015-10-13T22:35:34Z http://ndltd.ncl.edu.tw/handle/95393595961720534456 Experimental Study Thermal Performanceof Vapor Chamber Heat Spreader 蒸汽腔體均溫板熱性能實驗探討 Kuan-Ying Lin 林冠穎 碩士 淡江大學 機械與機電工程學系碩士班 101 The vapor chamber heat spreader (VCHS) is a capillary driven planar heat pipe design with a small aspect ratio, can sustain high heat flux and even the temperature distribution on a flat plate surface. Experimental investigations are performed on copper and vapor chamber heat spreaders to study their temperature uniformity, heating rate and thermal diffusivity based on a transient asymmetric heating and cooling test (TAHCT). A thermoelectric cooler (TEC) is applied to left corner of the spreaders. Spreader transient temperatures are measured by seven thermocouples and an IR-camera respectively when TEC is heating from 25oC with a power of 60W, switching to cooling mode at 95oC, and turning off at 15oC under forced convection. The Angstrom’s Method is used to measure the thermal diffusivity of heat spreaders in this study. Temperature uniformity is evaluated by average temperature and temperature difference during heating and cooling periods. A detail description in temperature uniformity is obtained. Vapor chamber heat spreader has the better temperature uniformity and heating rate. The utilization of the two-phase fluid phenomena to spread the heat is a key factor of good temperature uniformity. The thermal diffusivity of copper heat spreader and VCHS are 1.17cm2/s and 3.67cm2/s respectively. Another potential applications for the VCHS are seen in areas where good temperature uniformity are required with high heating rate such as Real-time Polymerase Chain Reaction (PCR). Shung-Wen Kang 康尚文 2013 學位論文 ; thesis 44 zh-TW |
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碩士 === 淡江大學 === 機械與機電工程學系碩士班 === 101 === The vapor chamber heat spreader (VCHS) is a capillary driven planar heat pipe design with a small aspect ratio, can sustain high heat flux and even the temperature distribution on a flat plate surface.
Experimental investigations are performed on copper and vapor chamber heat spreaders to study their temperature uniformity, heating rate and thermal diffusivity based on a transient asymmetric heating and cooling test (TAHCT). A thermoelectric cooler (TEC) is applied to left corner of the spreaders. Spreader transient temperatures are measured by seven thermocouples and an IR-camera respectively when TEC is heating from 25oC with a power of 60W, switching to cooling mode at 95oC, and turning off at 15oC under forced convection. The Angstrom’s Method is used to measure the thermal diffusivity of heat spreaders in this study.
Temperature uniformity is evaluated by average temperature and temperature difference during heating and cooling periods. A detail description in temperature uniformity is obtained. Vapor chamber heat spreader has the better temperature uniformity and heating rate. The utilization of the two-phase fluid phenomena to spread the heat is a key factor of good temperature uniformity. The thermal diffusivity of copper heat spreader and VCHS are 1.17cm2/s and 3.67cm2/s respectively. Another potential applications for the VCHS are seen in areas where good temperature uniformity are required with high heating rate such as Real-time Polymerase Chain Reaction (PCR).
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Shung-Wen Kang |
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Shung-Wen Kang Kuan-Ying Lin 林冠穎 |
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Kuan-Ying Lin 林冠穎 |
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Kuan-Ying Lin 林冠穎 Experimental Study Thermal Performanceof Vapor Chamber Heat Spreader |
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Kuan-Ying Lin |
title |
Experimental Study Thermal Performanceof Vapor Chamber Heat Spreader |
title_short |
Experimental Study Thermal Performanceof Vapor Chamber Heat Spreader |
title_full |
Experimental Study Thermal Performanceof Vapor Chamber Heat Spreader |
title_fullStr |
Experimental Study Thermal Performanceof Vapor Chamber Heat Spreader |
title_full_unstemmed |
Experimental Study Thermal Performanceof Vapor Chamber Heat Spreader |
title_sort |
experimental study thermal performanceof vapor chamber heat spreader |
publishDate |
2013 |
url |
http://ndltd.ncl.edu.tw/handle/95393595961720534456 |
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