臺灣博碩士論文加值系統

本研究設計之微型迴路式熱管（micro loop heat pipes）著重於將蒸發端與冷凝端分離，以增加兩者間之距離。此蒸發端之毛細結構為一組平行並列細長之V型溝槽，利用微機電（MEMS）技術製作，蒸發端與冷凝端間之連接管路為透明，以觀察工作流體在迴路內之輸送現象，並了解其運作狀態。
由觀測可知，當以甲醇為工作流體（填充率為80﹪），並使用一具溫度梯度之平板加熱時，此迴路系統得以成功地循環達一分鐘，隨後因甲醇蒸氣洩漏而乾涸，乃停止運作。若採用等溫之加熱平板對全蒸發端或後半蒸發端加熱時，在完成循環前，蒸發端內之工作流體即已乾涸。本研究亦比較甲醇與水兩者不同工作流體，當以水為工作流體時，最微流道中明顯產生氣泡，阻礙水的傳輸，造成流道之阻塞，可能原因之一為真空度不足。另外，由於本實驗之迴路系統封裝採用epoxy黏合，在長時間運作下在玻璃與矽晶片接合處會產生洩漏，無法將工作流體完全密封著，因此整個迴路系統無法持續運作。

摘要 ………………………………………………………… Ⅰ
目錄 ………………………………………………………… Ⅱ
符號說明 …………………………………………………… Ⅳ
圖表目錄 …………………………………………………… Ⅴ
第一章 緒論 1
1.1 前言 ………………………………………………… 1
1.2 文獻回顧 …………………………………………… 4
1.3 研究方向 …………………………………………… 7
第二章 原理與理論模式 8
2.1 迴路式熱管操作原理 ……………………………… 8
2.2 迴路式熱管理論模式 ……………………………… 10
2.3 工作液體的選擇 …………………………………… 12
第三章 微型迴路式熱管之設計與製程 14
3.1 微型迴路式熱管設計 ……………………………… 14
3.2 微型迴路式熱管製程 ……………………………… 16
第四章 結果與討論 18
4.1 實驗架構 …………………………………………… 18
4.2 測試結果與討論 …………………………………… 18
4.3 總結 ………………………………………………… 22
第五章 結論與未來研究建議 24
5.1 結論 ………………………………………………… 24
5.2 未來研究建議 ……………………………………… 25
參考文獻 26
附錄 29

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