本研究將震盪型熱管的流道利用濕蝕刻加工於銅板上，並設計兩種不同迴路型式的流道，在固定填充率50%的條件下，測試不同傾斜角度0°~90°對熱傳性能的影響，並利用高速攝影機觀測流道內汽泡震盪的情形，希望藉由可視化觀測得知不同操作條件對平板震盪型熱管的影響。
在可視化觀測及熱阻分析下，可得單一迴路震盪型熱管最佳操作角度為90°，且傾斜角度在 30°~90°時皆可產生震盪現象。其熱阻隨傾斜角度加大而降低，最大降幅發生在傾斜角度90°，加熱量45W時，熱阻較流體未發生震盪時降低44%。由於雙向迴路的流道設計，隨著加熱量增加，流體開始震盪，下半迴路遭蒸氣排開的區域也增加，熱阻僅微幅下降。實驗證實震盪型熱管內流體震盪，能有效增加熱傳，但在操作角度上仍有其極限 。

This article is trying to etching manufactured pulsating heat pipes on copper plate, and design two kind of loop type channel, In this article, experiment three filling ratio 50 %, and different incline, which were 0°、30°、60° and 90°, also record vapor motion in the channel by high speed camera，and want to know different operate conditions effect to flat plate pulsating heat pipes by visualization observe.
By visualization observe and thermal resistance analysis, it is found out that, with a filling ratio 50 % and incline angle 90° have optimal performance yields a thermal resistance, and the phenomenon of oscillating can observe from30°~90°, when heating rate at 45W, thermal resistance decrease 44% than heating rate at 15W.
In the double loop pulsating heat pipes, thermal resistance change is unobvious with heat input. In this article we found that the flow oscillating can enhance heat transfer, but there is a critical in low incline angle.

Akachi, H., 1990, US Patent Number 4921041.
Akachi, H., 1990, US Patent Number 5490558.
Akachi, H., Polasek, F., and Stulc, P., 1996, “Pulsating Heat Pipes,” Proc. 5th Int. Heat Pipe Symposium, Melbourne, Australia, pp. 208-217
Charoensawan, P., Khandekar, S., Groll, M., and Terdtoon, P., 2003, “Closed loop pulsating heat pipes Part A: parametric experimental investigations,” Applied Thermal Engineering, pp. 2009-2020.
Charoensawan, P., Terdtoon, P., Tantakom, P., Ingsuwan, P., and Groll, M., 2000 “Effects of inclination angles, Filling Ratios and total Lengths on heat transfer characteristics of a closed-loop oscillating heat pipe”. Proceeding of 6th International Heat Pipe Symposium, Chiang Mai, Thailand, pp. 422–430.
Charoensawan, P., Terdtoon, P., 2008, “Thermal Perfomance of Horizontal Closed-Loop Oscillating Heat Pipes,” Applied Thermal Engineering, pp.460-466.
Dobson, R., and Harm, T.M., 1999, “Lumoed Parameter Analysis of closed and open oscillatory heat pipes,” Proc. 11th International Heat Pipe Conference, Vol. 2, Japan, pp. 137-142.
Gi, K., Maezawa, S., Kojima, Y., and Yamazaki. N., 1999, “CPU Cooling of Notebook PC by Oscillating Heat Pipe,” Proc. 11th International Heat Pipe Conference, Vol. 2, Japan, pp. 166-169.
Groll, M., and Khandekar, S., 2002, “Pulsating Heat Pipes: A Challenge and Still Unsolved Problem in Heat Pipe Science,” The Third International Conference on Transport Phenomena in Multiphase System, pp. 35-43.
Groll, M., and Khandekar, S., 2003, “Pulsating Heat Pipes: Progress and Prospects,” Proc. International Conference on Energy and the Environment, Shanghai, China.
Groll, M., and Khandekar, S., 2004, “State of The Art on Pulsating Heat Pipes,” Microchannels and Minichannels, Rochester, New York, USA.
Khandekar, S., Schneider, M., Schäfer, P., Kulenovic, R., and Groll, M., 2002, “Thermofluid dynamic study of flat-plate closed-loop pulsating heat pipes,” Microscale Thermophysical Engineering, pp.303-318.
Khandekar S., Cui X. and Groll M., 2002, “Thermal Performance Modeling of Pulsating Heat Pipes,” Proc. 12th International Heat Pipe Confence, Moscow, Vol. 2
Khandekar, S., and Groll, M., 2003, “On The Definition of Pulsating Heat Pipes: An Overview,” Proc. 5th Minsk International Seminar (Heat Pipes, Heat Pumps and Refrigerators), Minsk,Belarus.
Khandekar, S., Charoensawan, P., Groll, M., and Terdtoon, P., 2003, “Closed Loop Pulsating Heat Pipes Part B: Visualization and Semi-Empirical Modeling,” Applied Thermal Engineering, Vol. 23, pp. 2021-2033
Lee, S., 1998, “Calculating Spreading Resistance In Heat Sinks,” Electronics Cooling, January, Vol.4, No.1
Lee, W. H., Jung, H. S., Kim, J. H., Kim, J. S., 1999, “Flow Visualization of Oscillating Capillary Tube Heat Pipe,” Proc. 11th International Heat Pipe Conference, Vol. 2, Japan, pp. 131-136
Meazawa, S., 2000, “Heat Pipe: Its Origin, Development and Present Situation,” Proc. 6th International Heat Pipe Symposium, Chiang Mai, pp. 3-13
Rittidech, S., Terdtoon, P., Murakami, M., Kamonpet, P., Jompakdee, W., 2003, “Correlation to Predict Heat Transfer Characteristics of a Closed-end Oscillating Heat Pipe at Normal Operating Condition,” Applied Thermal Engineering, pp.497-510.
Yang, H., Khandekar S., Groll, M., 2008, “Operational Limit of Closed Loop Pulsating Heat Pipes ,” Applied Thermal Engineering, pp.49-59.
王培綱，2007，平板震盪型熱管均熱片研究，國立中央大學機械工程研究所碩士論文，中壢。
賴耿陽，2000，金屬腐蝕加工技術，復漢出版社有限公司，台南。
葉竣達，2006，震盪式熱管簡介，中央大學熱交換器實驗室內部報告。