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論文名稱 Title |
迷你型噴霧冷卻循環系統設計與性能分析 Design and Performance Analysis of a Miniature Spray Cooling System |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
115 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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口試日期 Date of Exam |
2012-07-03 |
繳交日期 Date of Submission |
2012-08-27 |
關鍵字 Keywords |
冷卻曲線、極限熱通量、沸騰曲線、奈米流體、迷你型噴霧冷卻系統 Miniature spray cooling system, Nanofludics, Boiling curve, Cooling curve, Critical heat flux |
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統計 Statistics |
本論文已被瀏覽 5722 次,被下載 780 次 The thesis/dissertation has been browsed 5722 times, has been downloaded 780 times. |
中文摘要 |
本研究旨在設計及製造一迷你型噴霧冷卻系統,其中所製造及採用之腔體、流體供給馬達、熱交換器體積均較傳統小,本實驗探討此一迷你型噴霧冷卻系統在迷你化後之冷卻性能。實驗中以純銅做為測試表面,而後在去離子水中添加不同之奈米粉末(銀、奈米碳管))製作奈米流體,將其噴灑在上述之測試表面上,來提高本系統之散熱能力。本研究針對穩態及暫態兩種方法進行實驗,並以韋伯數做為實驗主要參數,觀察去離子水及不同奈米流體在測試表面上之沸騰現象及記錄測試表面上之溫度變化,並將結果以沸騰曲線圖及冷卻曲線圖表示。本論文最終目的是希望能夠對噴霧冷卻系統迷你化之冷卻效能有更進一步了解,以期能實際應用在微電子零件冷卻裝置上,解決目前電子零件單位面積之發熱功率急遽增加之問題。 |
Abstract |
The aim of this study is to design and build a miniature spray cooling system, in which the manufactured and adopted chamber, pump and heat exchanger are smaller than the conventional ones. An experiment was conducted to explore the cooling performance of the spray cooling system after its size has been minimized. In the experiment, copper was used to make the heated surface and different working media, such as DI water, as nanofludics with silver and multi-walled carbon nanotubes powder were sprayed on the heated surface to enhance the heat dissipation efficiency of the system. The experiment in this study was set according to two conditions: transient and steady state, with Weber number as the main parameter, to observe the boiling phenomenon of different working media on heated surface and to record the temperature changes of the heated surface. The results were shown in boiling curve and cooling curve. The ultimate goal of this study was to obtain a better understanding of the cooling performance of the miniature spray cooling system in order to apply it to micro-electronic cooling devices, thereby solving the problem of the sharp increase in heating power per unit area on electronic components. |
目次 Table of Contents |
目錄............................................................................................................i 表目錄........................................................................................................iv 圖目錄........................................................................................................v 符號說明....................................................................................................vii 中文摘要....................................................................................................x 英文摘要....................................................................................................xi 第一章 序論...........................................................................................1 1-1 前言............................................................................................1 1-2 研究背景....................................................................................2 1-3 文獻回顧....................................................................................4 1-4 研究目的....................................................................................15 第二章 實驗設備...................................................................................18 2-1 噴霧系統....................................................................................18 2-2 加熱測試裝置............................................................................18 2-3 流體供應系統............................................................................19 2-4 熱交換器....................................................................................19 2-5 溫度量測記錄儀器....................................................................20 2-6 PIV 系統.....................................................................................20 2-7 工具顯微鏡................................................................................21 2-8 掃描式電子顯微鏡(Scanning Electron Microscope)...........22 第三章 實驗方法及步驟........................................................................29 3-1 測試表面製備............................................................................29 3-2 工作流體製備............................................................................29 3-3 實驗方法....................................................................................30 3-4 實驗步驟....................................................................................32 3-5 數據處理....................................................................................34 第四章 理論分析...................................................................................41 4-1 韋伯數(We)定義...................................................................41 4-2 雷諾數(Re)定義.................................................................... 43 4-3 質量通量(G)計算.................................................................43 4-4 熱通量(q")計算....................................................................44 4-5 表面溫度(Tw)計算...............................................................45 4-6 熱傳係數(h)計算.................................................................45 4-7 奈米流體(Nanofulid)性質分析….......................................46 第五章 誤差分析...................................................................................51 第六章 結果與討論…………………………………………………...57 6-1 穩態曲線...................................................................................57 6-2 暫態曲線...................................................................................61 第七章 結論、建議與改進...................................................................77 7-1 結論...........................................................................................77 7-2 建議與改進...............................................................................77 參考文獻...................................................................................................79 附錄 A......................................................................................................89 |
參考文獻 References |
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