封閉迴路式震盪熱管之單向穩態循環流研究

Study on Single Direction Circulation Flow in Closed-Loop Pulsating Heat Pipe

蕭百鈞(Pai-Chun Hsiao)

指導教授 ： 康尚文

淡江大學/工學院/機械與機電工程學系碩士班/碩士(2013年)

https://doi.org/10.6846/TKU.2013.01106

摘要

本研究是利用外徑6mm、內徑3 mm 之玻璃管製作的9 個折彎
數、總長1980mm 之震盪式熱管。為了使震盪式熱管達到循環狀態，
本實驗在蒸發端採用單邊加熱及雙邊加熱的方式進行實驗，並使用水
冷系統為冷凝器將溫度控制在25°C。在兩種不同的加熱方式下、及
不同輸入功率(20W、60W、100W、140W)下，計算出熱阻值進行比
較。並利用數位攝影機拍攝影片，觀測乙醇在震盪式熱管中流動的情
形。
觀察實驗結果可以發現，當加熱瓦數到達100W 時，震盪式熱管
開始出現循環流，雙邊加熱在循環流中會出現局部的逆流，甚至是發
生震盪進而停止循環的情況，而單邊加熱可以在較低的輸入功率下產
生穩定的單方向循環流，使得熱阻值降低。

關鍵字

震盪式熱管 ； 循環流 ； 循環方向

並列摘要

This research utilized 6 mm outer diameter and 3 mm inner diameter glass tubes to
manufacture 9 turns Closed-Loop Pulsating Heat Pipe (CLPHP) with a total length of
1980mm. For achieving the loop circulation, heaters were installed unilaterally and bilaterally
in the evaporator respectively, and a water cooling system kept at 25°C was used as the
condenser. The experiment was conducted under both heating methods to compare the
thermal resistance at an input power of 20W, 60W, 100W and 140W. Through a digital video
camera, the visualization experiment was carried out to observe the ethanol fluid flow in the
PHP.
From the observation, when the input power is greater than 100W, circulation in the
working fluid occurs. Randomness direction of circulation and local oscillation can be found
in the bilateral heating. Unilateral heating may allow the consistent direction circulation
happened at lower input power to perform lower thermal resistance.

並列關鍵字

lsating Heat Pipe ； Circulation Flow ； Circulation Direction

參考文獻

Circulation Flow in Closed Loop Pulsating Heat Pipe,” Proc. 9th

[24] 林玉興，「震盪式熱管之製造與分析」，博士論文，淡江大學機

[27] 陳冠廷，「應用類神經網路預測震盪式熱管之熱性能」，碩士論

[30] 林建成，「田口法應用於震盪式熱管之性能最適化探討」，碩士

5th International Heat Pipe Symposium, Melbourne, Australia, pp.