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研究生:王鵬凱
研究生(外文):Perng-Kae Wang
論文名稱:應用於迴路式熱管高分子毛細結構之製造研究
論文名稱(外文):Manufacturing and Investigation of the Polymer Wick Structure Applied to Loop Heat Pipe
指導教授:陳瑤明
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:機械工程學研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:84
中文關鍵詞:鹽溶濾法高分子毛細結構迴路式熱管
外文關鍵詞:salt leachinglop heat pipepolymer wick
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高分子毛細結構具有高孔隙度、低熱導係數與製作成本低廉等優點,而目前將高分子毛細結構應用於迴路式熱管的相關研究並不多見,因此本文旨在建立可應用於迴路式熱管高分子毛細結構之設計、製造及測試能力。依照迴路式熱管在操作時的限制與特性,選擇聚苯乙烯作為毛細結構的材料,以鹽溶濾法(salt leaching)來製作高分子毛細結構。製作過程中遭遇到氯化鈉粉末聚集與熱壓填料的幾何尺寸效應等問題,在文中提供一個較佳的解決方式。在製作出高分子毛細結構後,量測其各項參數包括孔隙度、有效孔徑與滲透度,並將高分子毛細結構置入迴路式熱管中,進行熱傳性能測試。
本實驗經由實際量測以鹽溶濾法製作出來的毛細結構,其有效孔徑約在12~13 之間,孔隙度可控制在65~78%,綜整不同孔隙度的高分子毛細結構其滲透度後,找出滲透度與孔隙度相關的經驗公式,將有助迴路式熱管的熱傳性能預測。將孔隙度65%、滲透度 的高分子毛細結構置入迴路式熱管中,進行熱傳性能測試,在容許溫度50℃與熱沉溫度10℃下,最高熱傳量可達200 W,熱阻為0.177℃/W。


Polymer wick structure has the advantages that include high porosity, low thermal conductivity coefficient and lower manufacturing cost etc. However the relative researches on applying the polymer wick structure to LHP is still not familiar to date. Hence, the present effort seeks to set up the design, fabrication and test capacity of the polymer wick which is applicable to LHP. Based on the operating limitation and characteristics of LHP, polystyrene is chosen as the material and the polymer wick structure is fabricated by salt leaching method. Here, obstacles arising in the clustering of sodium chloride powder and the geometry effect of the filling material used during hot pressing process are solved. Besides, after the polymer wick structure is made, the wick parameters that include pore size, pore radius and permeability are measured. The wick is then installed into a LHP, and the heat transfer performance of LHP system is tested.

The testing results show that, the pore radius lies in between 12~13 , and the porosity can be controlled within the range of 65~78%. Summarizing the permeability of the polymer wicks with different porosity, a formula between permeability and porosity expressed as is established. The formula would help the prediction of the heat transfer capacity of LHP. Finally, a polymer wick with the porosity of 65%, pore size 12.5 and the permeability of is installed into a LHP system, and the performance test is conducted under the operating temperature of 50℃ and the heat sink temperature of 10℃. The results show that, the maximum heat transfer capacity of present LHP system approaches 200W, and the thermal resistant is 0.177℃/W.


誌 謝 ii
中文摘要 iv
Abstract v
目錄 ix
圖目錄 xi
表目錄 xii
第一章 緒論 1
1.1前言 1
1.2 文獻回顧 5
1.3研究目的 11
第二章 實驗原理及理論分析 12
2.1迴路式熱管操作原理 12
2.1.1毛細限制 14
2.1.2啟動限制 15
2.1.3液體過冷度限制 15
2.2理論分析 16
2.2.1流動壓降分析 16
2.2.1.1 液-汽介面之毛細壓差 16
2.2.1.2 蒸發器溝槽內蒸汽流動壓降 16
2.2.1.3 汽體段流動壓降 17
2.2.1.4 流經毛細結構之壓降 18
2.2.1.5 液體段及冷凝段流動壓降 19
2.2.1.6 重力壓降 20
2.2.2熱阻分析 21
2.2.2.1蒸發器熱阻 21
2.2.2.2冷凝器熱阻 24
2.2.3工質注入量 25
第三章 實驗設備與方法 26
3.1製造系統 26
3.1.1高分子毛細結構製造系統 26
3.1.2高分子毛細結構製造實驗材料 28
3.1.3迴路式熱管製造系統 28
3.2測試系統 29
3.3實驗步驟 32
3.3.1高分子毛細結構製作步驟 32
3.3.2迴路式熱管熱傳性能測試步驟 32
3.3.2.1迴路式熱管安裝過程 33
3.3.2.2熱性能測試步驟 34
3.4誤差分析 35
3.5實驗參數 39
第四章 結果與討論 40
4.1高分子毛細結構 40
4.1.1高分子毛細結構製作之設計 41
4.1.1.1高分子毛細結構製作方式之選擇 41
4.1.1.2高分子材料之選擇 45
4.1.1.3溶劑之選擇 47
4.1.1.4非溶劑之選擇 49
4.1.1.5熱壓模具之設計 49
4.1.2高分子毛細結構之製作 50
4.1.3高分子毛細結構各項參數測試 59
4.1.3.1孔隙度 59
4.1.3.2有效孔徑 60
4.1.3.3滲透度 64
4.1.4高分子毛細結構與金屬毛細結構之比較 67
4.1.4.1製作成本 67
4.1.4.2特性比較 68
4.2迴路式熱管設計與性能測試 69
4.2.1迴路式熱管之設計 69
4.2.1.1工質選擇 69
4.2.1.2管路材質之選擇 70
4.2.1.3迴路式熱管各元件尺寸 70
4.2.2迴路式熱管熱性能測試 71
第五章結論 75
參考文獻 77
附錄 81



Antonios G. Mikos, Yuan Bao, Linda G. Cima, Donald E. Ingber, Joseph P. Vacanti and Robert Langer, “Preparation of Poly(glycolic acid) Bonded Fiber Structures for cell attachment and transplantation,” Journal of Biomedical Materials Research, Vol.27, pp.183-189, 1993.

Antonios G. Mikos, Amy J. Thorsen, Lisa A. Czerwonka, Yuan Bao, Robert Langer, Douglas N. Winslow and Joseph P. Vacanti, “Preparation and Characterization of Poly(L-lactic acid) Foams,” POLYMER, Volume 35, Number 5, pp.1068-1077, 1994.

Chun-Jen Liao, Chin-Fu Chen, Jui-Hsiang Chen, Shu-Fung Chiang, Yu-Ju Lin, Ken-Yuan Chang, “Fabriction of Porous biodegradable Polymer Scaffolds Using a Solvent Merging/Particulate Leaching Method,” John Wiley & Sons, Inc., pp.676-681, 2001.

Cheung, K. H., Hoang, T. T., Ku. J. and Kaya, T., “Thermal Performance and Opera- tional Characteristics of Loop Heat Pipe (NRL LHP),” SAE Paper No. 981813, 1998.

Chi, S. W., “Heat Pipe Theory and Practice,” McGraw-Hill, New York,1976.

Christoph B., “Theoretical Investigation of Advanced Capillary Structures in Grooved Heat Pipe Evaporators for Space Applications,” Society of Automotive Engineers, Paper 2000-01-2319, 2000.

Dunn, P.D., and Reay, D.A., “Heat Pipes,” Pergamon Press, Oxford, 1994.

Faghri, A., “Heat Pipe Science and Technology,” Taylor & Francis, Washington, DC. 1995.

German, “Powder Metallurgy Science” Metal Powder Industries Federation, 1984.

Gluck, D., Gerhart, C., and Stanley, S., “Characterizztion of a High Capacity, Dual Compensation Chamber Loop Heat Pipe,” Space Technology and Applications
International Forum, The American Institute of Physics, pp.943-948, 1999.

Hoang, T. T., and Kaya, T., “Mathematical Modeling of Loop Heat Pipes,” AIAA
Paper No.99-0477, 1999.

Holman J. P. “Heat Transfer,” 8th McGraw-Hill, New York,1997.

Kaya, T. and Ku, J., “A Parametric Study of Performance Characteristics of Loop
Heat Pipe,” SAE Paper No. 1999-01-2006, pp.496-502, 1999.

Kaya, T. et al., “Investigation of Low Power Start-Up Characteristics of A Loop Heat Pipe,” NASA GSFC, Space Technology and Applications International Forum,1999.

Kaya, T., Ku, J., Hoang, T. T., and Cheung, M. K., “Investigation of Low Power Start-Up Characteristics of A Loop Heat Pipe,” Space Technology and Applications
International Forum, American Institute of Physics, New York, 1999.

Kaya, T., Baker, C., and Ku, J., “Comparison of Thermal Performance Characteristics of Ammonia and Propylene Loop Heat Pipes,” SAE Paper No.2000-01-2406, pp. 580-586, 2000.

Kaya T. and Jentung Ku, “Thermal Operational Characteristics of a Small-Loop Heat Pipe,” Journal of Thermophysics and Heat Transfer, Vol.17 No.4 October-December 2003.

Kim, J., and Golliher, E., “Steady State Model of a Micro Loop Heat Pipe,” 18th IEEE SEMI-THERM Symposium, pp.137-144, 2002.

Khrustalev, D., “Loop Heat Pipe Technology for Electronics Cooling,” Proceedings of SPIE, International Conference on High-Density Interconnect and SystemsPackaging, Vol.4428, pp.375-380, 2001.

Ku, J., “Operating Characteristics of Loop Heat Pipes,” SAE Paper No.1999, pp.503-519, 1999.

Ku, J., Rogers, P., and Cheung, K., “Investigation of Low Power Operation in a Loop Heat Pipe,” SAE Paper No.2001-01-2192, 2001.

Maidanik, Y. f., Fershtater, Y. G., and Solodovnik, N. N., “Loop Heat Pipes:Design,
Investigation, Prospects of Use in Aerospace Technics,” SAE Paper No.941185,1994.
Maidanik, Y. F., Pastukhov, V. G. and Chernyshova, M. A., “Development and
Investigation of Miniature Loop Heat Pipe,” SAE Paper No.1999-01-1983, pp.483-487, 1999.

Maidanik, Y. F., Vershinin, S. V., and Chernysheva, M. A., “Development and Tests of Miniature Loop Heat Pipe with a Flat Evaporator,” SAE Paper No.2000-01-2491, pp.652-656, 2000.

Maidanik, Y. F., Vershinin, S., Kholodov, V., and Dolgirev, J., “Heat Transfer Apparatus,” US Patent, No.4515209, May 7, 1985.

Muraoka, I., Ramos, F. M., and Vlassov, V. V., “Analysis of the operational characte- ristics and limits of a loop heat pipe with porous element in the condenser,” Internati- onal Journal of Heat and Mass Transfer, Vol.44, pp.2287-2297, 2001.

Neison J. G., Gregg J. B. and Joseph M. G. “Fine Pore Loop Heat Pipe Wick Structure Development,” SAE Paper No.961319, 1996.

Nikitkin, M., and Bienert, W. B., “Non-Condensable Gases and Loop Heat Pipe Oper- ation ,” SAE Paper No.981854, pp.394-399, 1998.

Qingpu Hou, Dirk W. Grijpma and Jan Feijen “Porous Polymeric Structures for Tissue Engineering Prepared by a Coagulation, Compression Moulding and Salt Leaching Technique,” Biomaterials, 24, pp1937-1947, 2003.

Rodriguez, J. I., and Na-Nakornpanom, A., “Investigation of Transient Temperature Oscillations of a Propylene Loop Heat Pipe,” SAE Paper No.2001-01-2235, 2001.

Schlitt, R., “Performance characteristics of Recently Developed High-Performance Heat Pipes,” Heat Transfer Engineering, Vol. 16, No. 1, 1995, pp.44-52

Stephan, P. C. and Busse, C. A.,“Analysis of the Heat Transfer Coefficient of Grooved Heat Pipe Evaporator Walls,” International Journal of Heat and Mass Transfer, Vol.30, No, 2, 1992, pp.383-391.

Tracey, V. A. “Pressing and Sintering of Nickel Powders,” The International Journal of Powder Metallurgy & Powder Technology, Vol.20, No.4, pp.281-285, 1984.

Takashi Kobayashi, Tetsurou Ogushi, Seiji Haga, Eiichi Ozaki, and Masao Fujii, “Heat Transfer Performance of a Flexible Looped Heat Pipe Using R134a as a Working Fluid: Proposal for Method to Predict the Maximum Heat Transfer Rate of FLHP,” Heat Transfer-Asian Research, 32(4), pp.306-318, 2003.

Wolf, D. A., Ernst, D. M., and Phillips A. L., “Loop Heat Pipes-Their Performance and Potential,” SAE Paper No.941575, 1994.

Wrenn, K. R., Wolf, D. A., and Kroliczek, E. J., “Effect of Noncondensible Gas and Evaporator Mass on Loop Heat Pipe Performance,” SAE Paper No.2000-01-2409, pp.603-614, 2001.

杜逸虹 “聚合體學” 三民書局 , 1978.

黃文宏, 燒結式微熱管之製造與性能測試”, 國立台灣大學碩士論文, 2000.

賴錦川,“燒結式微熱管毛細結構參數之影響研究”, 國立台灣大學碩士論文, 2000.

陳泰宇,“迴路式熱管製造與性能測試”, 國立台灣大學碩士論文, 2001.

張文華,“迴路式熱管參數影響之研究”, 國立台灣大學碩士論文, 2001.

黃坤祥 “粉末冶金學” 中華民國粉末冶金協會 , 2001.

朱振毅, “微小型迴路式熱管之設計製造及性能測試” , 國立台灣大學碩士論文, 2002.

王添銘 “迴路式熱管之毛細結構的設計製造及性能測試”, 國立台灣大學碩士論文, 2002.

鄭國章 “具高緻密度毛細結構之迴路式熱管”, 國立台灣大學碩士論文, 2003.

高濂, 孫靜和劉陽橋 “奈米粉體的分散與表面改質” , 化學工業出版社, 2003.


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