本實驗提出一新型可撓式熱管製作方式並進一步探討其性能，熱管以模具熱壓成型(hot embossing)方式製作而成，主要材質是採用高分子材料矽膠(silicone rubber)，此材質具有彎曲性佳、材質輕盈及耐高溫等特性，此外在蒸發端與冷凝端處採用紅銅片作為基材與矽膠接合以有效增加熱傳效果。本實驗熱管採用去離子水(DI water)為工作流體並以兩層250網目的銅網為毛細結構來增加毛細力，依真空度為0.0658 atm不同功率下進行性能測試，尋找出最佳填充率為40 %，在水平下測試最大熱通量可達11.75 W/cm2，除了水平測試外，本實驗更進一步測試熱管在不同彎曲角度(0 ~ -90°)下對熱傳性能的影響，由熱阻分析顯示可撓式熱管最佳彎曲角度為-15°，且在彎曲角度(-30 ~ -90°)間進行測試，其熱阻會隨彎曲角度加大而升高，實驗證實可撓式熱管在小角度彎曲下有助於工作流體回流於蒸發端，但彎曲角度過大則因熱管內部毛細結構無法依原本服貼於熱管壁面，則熱傳性能降低，故熱管之參數搭配得宜，可發揮極大熱傳性能。

This experiment produces a new flexible heat pipe, and further tests and explores its characteristics and performance. The heat pipe is made of silicone rubber, a kind of polymer material, and was molded by hot embossing. Characteristics of this material include good bending resistance, lightness, and good resistance to high temperature. Furthermore, copper sheets connected with silicone were placed at the evaporator section and condenser section to enhance heat transfer effects. DI water in the pipe was used as the working medium, and two-layer 250 mesh copper nets were used as a wick to strengthen the heat pipe’s capillary effects. The researcher set the vacuum degree at 0.0658 atm to test the pipe’s performances at different powers. Key findings include an optimum filling ratio of 40%, and a largest heat flux of 11.75 W/cm2 during the proficiency test. In addition to the proficiency test . The influence of different angles of bends (0 ~ -90°) on the pipe’s heat transfer performance was also tested and based on heat thermal resistance obtained, found that the best bended angle of the flexible heat pipe was -15°, and thermal resistance will increase with the angle(-30 ~ -90°). The experiment proves a small angle bend that is helpful for the working medium to flow back to the evaporator section, but the heat transfer performance would shrink because the wick could not affix to the inner wall of the pipe if the angle is too large. This work shows the proper combination of pipe parameters will significantly improve heat transfer performance.

目錄................................................................................................................i
表目錄..........................................................................................................iii
圖目錄..........................................................................................................iv
符號說明......................................................................................................vi
中文摘要....................................................................................................viii
英文摘要......................................................................................................ix
第一章 序論...............................................................................................1
1-1 前言..............................................................................................1
1-2 熱管發展之背景..........................................................................3
1-3 文獻回顧......................................................................................5
1-4 研究目的....................................................................................12
第二章　熱管之原理與理論基礎.............................................................14
2-1 熱管有效長度............................................................................14
2-2 熱管彎曲角度之定義................................................................14
2-3 熱管作動原理............................................................................15
2-4 熱管性能極限............................................................................17
2-5 熱管性能評估............................................................................22
2-6 微熱管之定義............................................................................24
第三章 實驗相關設備與元件材料.........................................................38
3-1 實驗設備及步驟........................................................................38
3-2 實驗元件材料............................................................................43
第四章　實驗元件製作設計.....................................................................51
4-1 工作流體的選擇........................................................................51
4-2 熱管的設計與製程....................................................................53
第五章　誤差分析.....................................................................................66
第六章　結果與討論.................................................................................70
6-1 工作流體填充量對性能的影響................................................71
6-2 輸入功率對於性能的影響........................................................73
6-3 彎曲角度改變對性能的影響....................................................74
第七章　結論與建議.................................................................................92
7-1 結論............................................................................................92
7-2 建議............................................................................................94
參考文獻.....................................................................................................95
附錄A.................................................................................................101

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