臺灣博碩士論文加值系統

本文主要是利用圓柱座標系統修正Cotter最大熱傳量的預測模型，在微熱管中針對單一V型溝槽，分析汽體流動對液體流動的影響，解得溝槽內液體流動速度，以得到單一溝槽內的體積流率。藉由體積流率定義無因次液體流動形狀因子 ，使Cotter最大熱傳量的預測模型加入液-氣接觸面的摩擦影響。

再藉由此方程式，導入溝槽開口夾角角度對圓柱形熱管的溝槽數及截面積大小的影響，進而分析求得最佳溝槽開口夾角，在2ψ=26度，溝槽數為30個時，令熱管獲得最佳熱傳輸送量。結果也顯示出最大熱傳量受到溝槽開口夾角大小的影響大於接觸角α。

The present study modifies Cotter’s model for predicting the maximum heat transport capacity and discusses the performance of a single V-shaped microgroove of the Micro heat pipe. A cylindrical coordinate system is used to analyze the correlated between the liquid flow velocity and vapor flow direction, which will affect the behavior of liquid surface and liquid flow velocity, and to obtain the relating volumetric flow-rate in the single microgroove. Then, in order to include the frictional effect of the liquid-vapor interaction into the Cotter’s model, a dimensionless liquid flow shape factor, , which is defined by the volumetric flow-rate, is introduced to predict the maximum heat transport capacity.
The equation shows the effect of channel angle to solve the channel number of cylinder heat pipe and cross-sectional area. The heat pipe could get the optimum channel angle as 2ψ= , channel number =30. It shows that the max heat transfer flux effected by channel angle is bigger than the effect by contact angleα.

中文摘要 i
英文摘要 ii
誌謝 iii
目錄 iv
圖表目錄 vi
符號說明 x

第一章 導論
1-1 前言 1
1-2 研究背景與目的 5
1-3 文獻回顧 6
1-4 本文架構 11
第二章 理論分析
2-1 問題描述與基本假設 15
2-2 組成方程式 17
2-3 無因次化參數 18
第三章 解析方法
3-1 解析方法 20
3-2 修正係數 24
3-3 液-氣接觸面的影響帶入 28
3-4 溝槽開口夾角對圓柱形熱管的影響 29
第四章 結果與討論
4-1 之分析及討論 30
4-2 最大熱傳量之分析及討論 33
第五章 結論 35
第六章 未來與展望 36
參考文獻 37
附錄A 81
附錄B 90
簡歷 102

圖表目錄
表一工作流體之作動特性··································································40
圖一熱管主要構造示意圖··································································41
圖二熱管界限之示意圖······································································41
圖三（A） V 型溝槽示意圖·······························································42
圖三（B） 溝槽的幾何圖形和座標系統···········································42
圖四圓形熱管示意圖··········································································43
圖五(A) 液-氣相互影響在1 v L > ························································44
圖五(B) 液-氣相互影響在1 v L = ························································44
圖五(C) 液-氣相互影響在0 1 v L < < ···················································45
圖五(D) 液-氣相互影響在0 v L = ·······················································45
圖五(E) 液-氣相互影響在0 v L < ························································46
圖六(A) 溝槽開口夾角=10 ο時剖面圖···············································47
圖六(B) 溝槽開口夾角=40 ο時剖面圖···············································47
圖七(D) 圓形熱管單一溝槽剖面截圖··············································48
圖八Babin【6】微熱管實驗截面圖··················································49
圖九方形微熱管中，在不同的v L 之l K 值對α的關係圖··················50
圖十正三角形熱管示意圖··································································51
圖十一在正三角形微熱管中，在不同的v L 之l K 值對α的關係圖···52

圖十二在不同的V L 值且α=10o 時，最大熱傳量與操作溫度關係圖
·······························································································53
圖十三在不同的V L 值且α=20o 時，最大熱傳量與操作溫度關係圖
·······························································································54
圖十四在不同的V L 值且α=30o 時，最大熱傳量與操作溫度關係圖
·······························································································55
圖十五在不同的V L 值且α=10o 時，最大熱傳量與操作溫度關係圖
·······························································································56
圖十六在不同的α值且V L =0 時，最大熱傳量與操作溫度關係圖。
·······························································································57
圖十七在不同的α值且V L =0.5 時，最大熱傳量與操作溫度關係圖
·······························································································58
圖十八在不同的α值且V L =1 時，最大熱傳量與操作溫度關係圖。
·······························································································59
圖十九在不同的α值且V L =1.5 時，最大熱傳量與操作溫度關係圖
·······························································································60
圖二十在不同的V L 值且T=40o 時，最大熱傳量與接觸角α關係圖
·······························································································61
圖二十一在不同的V L 值且T=45o 時，最大熱傳量與接觸角α關係圖
·······························································································62
圖二十二在不同的V L 值且T=50o 時，最大熱傳量與接觸角α關係圖
···························································································63
圖二十三在不同的V L 值且T=55o 時，最大熱傳量與接觸角α關係圖
···························································································64

圖二十四在不同的V L 值且T=60o 時，最大熱傳量與接觸角α關係圖
···························································································65
圖二十五在不同的V L 值且T=65o 時，最大熱傳量與接觸角α關係圖
···························································································66
圖二十六在不同的V L 值且α=10o 時，最大熱傳量與溝槽開口夾角關
係圖···················································································67
圖二十七在不同的V L 值且α=20o 時，最大熱傳量與溝槽開口夾角關
係圖···················································································68
圖二十八在不同的V L 值且α=30o 時，最大熱傳量與溝槽開口夾角關
係圖···················································································69
圖二十九在不同的V L 值且α=40o 時，最大熱傳量與溝槽開口夾角關
係圖···················································································70
圖三十在不同的V L 值且T=40o 時，最大熱傳量與溝槽開口夾角關係
圖·······················································································71
圖三十一在不同的V L 值且T=45o 時，最大熱傳量與溝槽開口夾角關
係圖···················································································72
圖三十二在不同的V L 值且T=50o 時，最大熱傳量與溝槽開口夾角關
係圖···················································································73
圖三十三在不同的V L 值且T=55o 時，最大熱傳量與溝槽開口夾角關
係圖···················································································74

圖三十四在不同的V L 值且T=60o 時，最大熱傳量與溝槽開口夾角關
係圖···················································································75
圖三十五在不同的V L 值且T=65o 時，最大熱傳量與溝槽開口夾角關
係圖···················································································76
圖三十七在不同的T 值且V L =0.5 時，最大熱傳量與溝槽開口夾角關
係圖···················································································78
圖三十八在不同的T 值且V L =1 時，最大熱傳量與溝槽開口夾角關係
圖·······················································································79
圖三十九在不同的T 值且V L =1.5 時，最大熱傳量與溝槽開口夾角關
係圖···················································································80

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