本研究使用可視化之平板熱管，研究具平行溝槽毛細結構之平板
熱管蒸發區在操作中發生的現象。溝槽截面為U 形，寬0.25mm、深
0.16mm，採用的工作流體分別有水、甲醇、或丙酮。另亦包括於溝
槽蒸發區燒結不規則細銅粉的複合式毛細結構。可視化觀察指出，除
在低加熱量外，各溝槽中之水膜會分別出現一聚光性端部，各溝槽之
水膜的動態行為彼此獨立，隨加熱量增加時，水膜端部逐漸退離加熱
區，熱阻會隨此乾化過程而上升。然而，本研究之溝槽毛細之最低蒸
發熱阻量測值高於本實驗室先前對多層銅網或燒結銅粉毛細測得之
最低蒸發熱阻值，且實驗重複性不及另兩種毛細之平板熱管。當採用
複合式毛細結構時，熱管操作性能較溝槽毛細結構時穩定，且具較高
之最大加熱量。此外，在三種不同工作流體下均未觀察到核沸騰現象。

摘要...................................................................................I
圖表目錄......................................................................................IV
第一章 緒論
1.1 研究背景.............................................................................................1
1.2 熱管的結構.........................................................................................1
1.3原理與文獻回顧
1.3.1 熱管之工作原理..........................................................................2
1.3.2 溝槽毛細蒸發現象....................................................................11
1.3.3 複合式溝槽毛細........................................................................15
1.4 研究動機與目的...............................................................................16
第二章 實驗方法
2.1實驗架構與配置.................................................................................18
2.2實驗儀器.............................................................................................21
2.3實驗步驟
2.3.1 前置作業....................................................................................23
2.3.2 注水量之選擇............................................................................24
2.3.3 實驗流程................................................................................25
2.4 實驗數據處理...................................................................................25
第三章 結果與討論
3.1 溝槽毛細之蒸發區觀察...................................................................28
3.2 溝槽毛細操作中之蒸發熱阻量測與觀察
3.2.1 選用水為工作流體....................................................................32
3.2.2 選用甲醇、丙酮為工作流體......................................................38
3.3 溝槽燒結粉末毛細之操作中熱阻量測
3.3.1 選用水為工作流體....................................................................41
3.3.2 選用甲醇、丙酮為工作流體......................................................42
3.4 溝槽毛細之冷凝區觀察...................................................................43
第四章 結論...................................................................................45
參考文獻.........................................................................47

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