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研究生:吳有章
研究生(外文):Yu-Chang Wu
論文名稱:三維熱擴散介質結合散熱座之熱傳分析
論文名稱(外文):Thermal Analysis for Three-Dimensional Heat Spreader Integrated with Heat Sink
指導教授:洪英輝
指導教授(外文):Ying-Huei Hung
學位類別:碩士
校院名稱:國立清華大學
系所名稱:動力機械工程學系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:英文
論文頁數:142
中文關鍵詞:熱擴散介質散熱座接觸熱阻熱傳分析軟體
外文關鍵詞:Heat SpreaderHeat SinkContact ResistanceThermal Analyzer
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本研究成功地發展出一套有效的熱傳分析軟體,來探討多個熱源貼附在結合三維熱擴散介質與散熱座之散熱裝置上的熱傳特性。文中探討的熱傳特性包括:散熱座在自然對流或強制對流下之熱傳係數、散熱鰭片之效率、接合面之接觸熱阻、熱輻射、三維熱擴散介質表面上之局部溫度分佈和彩色等溫圖、三維熱擴散介質與散熱座組合之總熱阻。另外,本文亦作一系列相關的參數研究。相關的參數和條件包括:熱源之尺寸和散熱量、熱擴散介質和散熱座之尺寸和材質、散熱座之對流型式、熱擴散介質和散熱座間之接觸情況。最後,文中再探討兩個具有多個熱源的例子,來印證本研究所發展出的熱傳分析軟體之優越性。

An effective thermal analyzer for exploring the thermal performance of 3-D heat spreader having discrete heat sources integrated with heat sink has been successfully developed in the study. The thermal performance investigated includes the heat transfer coefficient of natural or forced convection from heat sink to the ambient, fin efficiency, interfacial contact resistance, thermal radiation conductance, local temperature distributions and isotherms on heat spreader surfaces; and overall resistance of heat spreader/sink assembly. Besides, a series of parametric studies have been performed. The parameters and conditions explored include the size and heat dissipation rate of heat sources, size and material of heat spreaders and heat sinks, type of convection in heat sink, and contact conditions between heat spreader and heat sink. The superiority of the developed thermal analyzer through two sample cases having multi-discrete heat sources has finally been demonstrated.

ABSTRACT
ACKNOWLEDGEMENTS
LIST OF TABLES
LIST OF FIGURES
NOMENCLATURE
CHAPTER1 INTRODUCTION AND BACKGROUND
1.1 RATIONALE
1.2 LITERATURE REVIEW 1.2.1 Heat Spreader 1.2.2 Heat Sink 1.2.3 Contact Resistance
1.3 RESEARCH OBJECTIVES
1.4 THESIS ORGANIZATION
CHAPTER2 DEVELOPMENT OF THERMAL ANALYZER
2.1 THERMAL ANALYSIS OF 3-D HEAT SPREADER WITH DISCRETE HEAT SOURCES
2.1.1 Model Definition and Assumptions
2.1.2 Governing Equations and Associated Boundary Conditions
2.1.3 Temperature Distribution
2.2 THERMAL PERFORMANCE OF HEAT SINKS
2.2.1 Heat Convection
(A) Natural Convection Heat Transfer
(B) Forced Convection Heat Transfer
(C) Fin Efficiency
(D) Effective Heat Transfer Coefficient
(E) Useful Thermal Correction Factors in Heat Sink Design
2.2.2 Thermal Radiation
2.3 THERMAL EVALUATION OF INTERFACIAL CONTACT RESISTANCE
2.3.1 Definition of Interfacial Thermal Contact Resistance
2.3.2 Parameters Influencing Thermal Contact Resistance
2.3.3 Correlations for Interfacial Thermal Contact Resistance
2.4 PROCEDURE OF PERFORMING THERMAL ANALYSIS FOR 3-D HEAT SPREADER INTEGRATED WITH HEAT SINK
CHAPTER3 RESULTS AND DISCUSSION
3.1 PROGRAM VALIDATION
3.2 PARAMETRIC STUDIES
3.2.1 Size of Heat Source
3.2.2 Power of Heating Load
3.2.3 Type of Heat Spreader Material
3.2.4 Structure of Heat Sink
3.2.5 Convection Type in Heat Sink
3.2.6 Radiative Emissivity of Heat Sink
3.2.7 Contact Pressure Between Heat Spreader and Heat Sink
3.3 APPLICATIONS
3.3.1 Sample Problem (Ⅰ) 3.3.2 Sample Problem (Ⅱ)
CHAPTER4 CONCLUSIONS AND RECOMMENDATIONS
4.1 CONCLUSIONS
4.2 RECOMMENDATIONS
REFERENCES
APPENDIX A
APPENDIX B

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