研究生: |
高政群 Kao, Cheng-Chun |
---|---|
論文名稱: |
微型迴路式熱管之研製 Design and Fabrication of the Micro Loop Heat Pipe |
指導教授: |
王訓忠 博士
Dr. Wong, Shwin-Chung |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 動力機械工程學系 Department of Power Mechanical Engineering |
論文出版年: | 2002 |
畢業學年度: | 90 |
語文別: | 中文 |
論文頁數: | 66 |
中文關鍵詞: | 微型迴路式熱管 、微機電技術 、毛細結構 、溫度梯度 |
相關次數: | 點閱:3 下載:0 |
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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。
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