本研究製作面積為140 mm × 80 mm，厚度分別為0.38 mm、0.48 mm與0.58 mm之銅/水超薄均溫板，其蒸汽流道深度分別為0.15 mm、0.25 mm與0.35 mm。針對此三種蒸汽流道深度分別進行低功率自然對流與高功率強制對流實驗，以觀察不同的蒸汽流道深度對於熱性能與冷凝區聚水現象之影響。實驗結果顯示，蒸汽流道深度僅0.15 mm時，冷凝區聚水現象容易發生，但可使填充量適當低於飽和值(毛細孔隙體積)以避免聚水發生並維持一定散熱性能。蒸汽流道深度在低功率(<15 W)自然對流冷卻下對熱阻的影響有限，但在高功率強制對流冷卻下則有影響。在適當填充量下，厚度0.58 mm之均溫板在乾化發生前的最大熱傳量為150.4 W，最佳均溫板熱阻為0.025 K/W；厚度0.48 mm之均溫板的最大熱傳量為57.6 W，最佳熱阻則為0.033 K/W。當均溫板厚度為0.38 mm (蒸汽流道深度為0.15 mm)、填充率為0.66時，在15 W自然對流冷卻下，均溫板熱阻為0.33 K/W，與另兩厚度之均溫板的熱阻值相近，但在強制對流冷卻下，厚度0.38 mm之均溫板因填充量過低，在20 W以上即產生乾化。

In this study, ultra-thin vapor chambers (VCs) with thickness of 0.38 mm, 0.48 mm, and 0.58 mm, with the vapor duct thickness of 0.15 mm, 0.25 mm, and 0.35 mm, respectively, were fabricated and tested natural-convection air cooling and forced-convection water cooling. The aims are to investigate the effect of vapor duct thickness on the thermal performance and the capillary blocking. Capillary blocking tends to occur when the vapor duct thickness is as thin as 0.15 mm. But suitably reducing the filling ratio below the saturate value (the pore volume of the wick) may avoid capillary blocking and maintain the function of 0.38 mm-thick VCs up to a certain limit. The vapor duct thickness does not affect the vapor chamber thermal resistance under low-heat-load natural-convection cooling (<15 W), but becomes influential to the thermal performance under high-load forced-convection cooling. With near saturate fillings, the maximum heat transfer rate and the minimum thermal resistance for the 0.58 mm VCs are 150.4 W and 0.025 K/W, respectively. For the 0.48 mm-thick VCs, they are 57.6 W and 0.033 K/W, respectively. For the 0.38 mm-thick VCs (vapor duct thickness of 0.15 mm) under a filling ratio of 0.66, the thermal resistance is 0.33 K/W under 15 W natural-convection cooling, approximately equal to those of the other two thicker VCs under the same cooling condition. When water cooled, dryout occurs above 20 W for the 0.38 mm-thick VC due to the low water filling.

摘要 .......................................I
Abstract...................................II
致謝.......................................III
圖表目錄 ...................................VI
符號表......................................IX
第一章 緒論.................................1
1.1研究背景...............................1
1.2文獻回顧...............................2
1.2.1 熱管與超薄熱管.....................2
1.2.2 超薄均溫板........................8
1.2.3 冷凝區末端聚水....................14
1.3研究動機與目的........................16
第二章 實驗設備與方法.......................18
2.1均溫板製作............................18
2.1.1均溫板設計.........................18
2.1.2製作設備...........................19
2.1.3製作步驟...........................21
2.2 自然對流實驗.........................25
2.2.1實驗設備與架構.....................25
2.2.2實驗步驟..........................27
2.2.3實驗參數..........................28
2.2.4實驗誤差分析......................29
2.3 強制對流實驗........................31
2.3.1實驗設備與架構....................31
2.3.2實驗步驟.........................32
2.3.3實驗參數.........................33
2.3.4實驗誤差分析.....................34
第三章 實驗結果與討論.....................36
3.1 自然對流實驗.......................36
3.1.1冷凝區邊緣聚水現象................36
3.1.2蒸汽流道深度對均溫性與熱阻之影響...39
3.2 強制對流實驗.......................42
3.2.1蒸汽流道深度對性能之影響..........42
3.2.2填充量對性能之影響................48
3.2.3與現有文獻結果之比較..............49
第四章 結論..............................50
參考文獻.................................52

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