| Experimental Study on Heat Transfer Enhancement of Natural Circulation Liquid Cooling System for Electronic Component |
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| 作者姓名： | 张正国 李倩侠 方晓明 本田博司 |
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| 作者单位： | Key Lab. of Enhanced Heat Transfer and Energy Conservation，Ministry of Education，South China Univ. of Technology，Guangzhou 510640，China，Key Lab. of Enhanced Heat Transfer and Energy Conservation，Ministry of Education，South China Univ. of Technology，Guangzhou 510640，China，Key Lab. of Enhanced Heat Transfer and Energy Conservation，Ministry of Education，South China Univ. of Technology，Guangzhou 510640，China，Inst. of Materials Chemistry and Eng.，Kyushu Univ.，Kasuga 816-8580，Japan |
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| 摘 要： | NomenclatureH :height of condenser above the evaporatorlevel( m)h:heightof FC- 72 filled in the testloop( m)q:heat flux based on projected surface area( W/cm2 )q CHF:critical heat flux( W/cm2 )Tc:cooling water temperature(°C)Ts:saturation temperature(°C)Tw:wall temperature(°C)ΔTsat:wall superheat( K)ΔTsub:liquid subcooling( K)W:flow rate of FC- 72 ( g/min)z:height of liquid in the downcomer( m)IntroductionDirect or indirect liquid cooling with phase-change by use of dielectric liq…
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| 关 键 词： | 电子元件 微接头 传热 自然流通液体冷却 |
Experimental Study on Heat Transfer Enhancement of Natural Circulation Liquid Cooling System for Electronic Component |
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| ZHANG Zheng-guo ,LI Qian-xia ,FANG Xiao-ming ,HONDA Hiroshi.Experimental Study on Heat Transfer Enhancement of Natural Circulation Liquid Cooling System for Electronic Component[J].Journal of Shanghai Jiaotong university,2004,9(3):83-87. |
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| Authors: | ZHANG Zheng-guo LI Qian-xia FANG Xiao-ming HONDA Hiroshi |
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| Institution: | 1. Key Lab.of Enhanced Heat Transfer and Energy Conservation,Ministry of Education,South China Univ.of Technology,Guangzhou 510640,China
2. Inst.of Materials Chemistry and Eng.,Kyushu Univ.,Kasuga 816-8580,Japan |
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| Abstract: | The present research is an experimental study on heat transfer characteristics of a natural circulation cooling system for electronic components. A smooth chip and two micro-pin-finned chips were tested. The chip is mounted on the base of a rectangular horizontal duct located at the bottom of 250 mm high natural circulation loop.FC-72 is used as a coolant. The test conditions are set that the operation pressure of experimental system is 1. 013× 105 Pa, the flow rate of FC-72 is 150 g/min and the subcoolings are 10 K, 25 K and 35 k, respectively. Effect of the subcooling on nucleate boiling and critical heat flux(CHF) were investigated. The results show that subcoolingis found to significantly affect CHF for all chips and micro-pin-finned chips sharply enhanced the boiling heat transfer, CHF of micro-pin-finned chips are 2.5～3 times as large as that of smooth chip at the same subcooling. |
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| Keywords: | electronic component micro-pin-finned heat transfer enhancement |
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