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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 陳瑤明(Yau-Ming Chen) | |
dc.contributor.author | Sheng-Lung Wu | en |
dc.contributor.author | 吳聲鑨 | zh_TW |
dc.date.accessioned | 2021-06-13T15:29:52Z | - |
dc.date.available | 2013-07-23 | |
dc.date.copyright | 2008-07-23 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-07-15 | |
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[10] Hwang, G. S., and Kaviany, M., (2006). 'Critical heat flux in thin, uniform particle coatings.' International Journal of Heat and Mass Transfer, 49(5-6), pp.844-849. [11] O'Connor, J. P., and You, S. M., (1995), “A Painting Technique to Enhance Pool Boiling Heat Transfer in FC-72,” Journal of Heat Transfer, Vol. 117, No. 2, pp.387-393. [12] Chang, J. Y., and You, S. M., (1997), “Boiling Heat Transfer Phenomena From Microporous and Porous Surfaces in Saturated FC-72,” International Journal of Heat and Mass Transfer, Vol. 40, No. 18, pp. 4437-4447. [13] Chang, J. Y., and You, S. M., (1997), “Enhanced Boiling Heat Transfer From Microporous Surfaces: Effects of a Coating Composition and Method,”International Journal of Heat and Mass Transfer, Vol. 40, No. 18, pp. 4449-4460. [14] Rainey, K.N. and You, S. M., (2001), “Effects of Heater Orientation on Pool Boiling Heat Transfer from Microporous Coated Surfaces,” International Journal of Heat and Mass Transfer, Vol. 44, No. 14, pp. 2589-2599. [15] Kim, J. H., Rainey, K. N., You, S. M., and Park, J. Y., (2002), “Mechanism of Nucleate Boiling Heat Transfer Enhancement From Microporous Surfaces in Saturated FC-72,” Journal of Heat Transfer, Vol. 124, No. 3, pp. 500-506. [16] Bergles, A. E., and Chyu, M.C., (1982). 'Characteristics of nucleate pool boiling from porous metallic coatings.' Journal of Heat Transfer-Transactions of the ASME, 104, 279-285. [17] Malyshenko, S. P., (1991). 'Features of heat-transfer with boiling on surfaces with porous coatings.' Thermal Engineering, 38(2), pp. 81-88. [18] Liter, S. G., and Kaviany, M., (2001). 'Pool-boiling CHF enhancement by modulated porous-layer coating: theory and experiment.' International Journal of Heat and Mass Transfer, 44(22), pp.4287-4311. [19] Wu, W., Du, J. H., Hu, X. J., and Wang, B. X., (2002). 'Pool boiling heat transfer and simplified one-dimensional model for prediction on coated porous surfaces with vapor channels.' International Journal of Heat and Mass Transfer, 45(5), pp.1117-1125. [20] Furberg, R., Li, S., Palm, B., Toprak, M., and Muhammed, M.,(2006) 'Dendritically ordered nano-particles in a micro-porous structure for enhanced boiling. ' 13th International Heat Transfer Conference, NAN-07. [21] Mitrovic, J., (2006b). 'How to create an efficient surface for nucleate boiling? 'International Journal of Thermal Sciences , 45(1), pp.1-15. [22] Griffith P., and Wallis J.D., (1960). 'The role of surface conditions in nucleate boiling. ' Chemical Engineering Progress Symposium Series, 56(30), pp. 49-63. [23] Jakob, M., (1949). 'Heat transfer. ' Wiley, New York, pp.636-638. [24] Benjamin, J. E., and Westwater, J. W., (1961). 'Bubble growth in nucleate boiling of a binary mixture.' International Developments in Heat Transfer, ASME, New York, pp.212-218. [25] Bonilla, C. F., Grady, J. J., and Avery, G. W., (1965). 'Pool boiling heat transfer from grooved surfaces.' Chem. Eng. Prog. Supp. Ser., 61(57), pp.280-288. [26] Albertson, C.E., (1977). 'Boiling heat transfer surface and method. ' U.S. patent no.4,018,264. [27] Muellejans, H., (1982). 'Process for the preparation of a surface of a metal wall for the transfer of heat. ' U.S. patent no. 4,360,058. [28] Grant A. C., and K. J. W., (1980). 'Thermospray method for production of Aluminium porous boiling surface. ' U.S. patent no. 4,232,056. [29] Cieslinski, J. T., (2002). 'Nucleate pool boiling on porous metallic coatings.' Experimental Thermal and Fluid Science, 25(7), pp.557-564. [30] Hsieh, S. S., and Weng, C. J., (1997). 'Nucleate pool boiling from coated surfaces in saturated R-134a and R-407c. ' International Journal of Heat and Mass Transfer, 40, pp.519-532. [31] Honda, H., Takamatsu, H., Wei, J. J., (2002), Enhanced Boiling of FC-72 on Silicon Chips With Micro-Pin-Fins and Submicron-Scale Roughness, Journal of Heat Transfer, 124, pp. 383-390. [32] Wei, J. J., Honda, H, (2003), Effects of Fin Geometry on Boiling Heat Transfer From Silicon Chips with Micro-Pin-Fins Immersed in FC-72, International Journal of Heat and Mass Transfer, 46, pp. 4059-4070. [33] Mitrovic, J., and Ustinov, A., (2006a). 'Boiling features of novel microstructure. ' 13th International Heat Transfer Conference. [34] Ujereh, S., Fisher,T., Mudawar, I., (2007), Effects of carbon nanotube arrays on nucleate pool boiling International Journal of Heat and Mass Transfer , 50, pp. 4023–4038. [35] Nukiyama, S., (1934). 'Maximum and minimum values of heat transmitted from metal to boiling water under atmospheric pressure.' Journal of Society of Mechanical Engineers, Japan, 37, 367. [36] Kim, J.H.,(2006). 'Enhancement of pool boiling heat transfer using thermallyconductive mircoporous coating techniques.', Ph. D. Thesis, Texas University,USA [37] Rohsenow, W. M., (1962). 'A method of correlating heat transfer data for surface boiling of liquids.' Journal of Heat Transfer-Transactions of the ASME, 84, 969. [38] Cooper M.G., (1984). 'Heat flow rates in saturated nucleate pool boiling—a wide-ranging examination using reduced properties. 'Advances in Heat Transfer, 16, 157-239, Academic Press. [39] Gorenflo, D., (1993). 'Pool boiling.' VID Heat Atlas, Chapter Ha, Germany: VDI-Verlag GmbH. [40] Zuber, N., (1958). 'Hydrodynamic aspects of boiling heat transfer. ' AECU-4439, Physics and Mathematics, US Atomic Energy Commission. [41] Leinhard, J. H., Dhir, V. K., and Riherd, D. M., (1973). 'Peak pool boiling heat flux measurements on finite horizontal plates.' Journal of Heat Transfer, 95, 477. [42] O’Neill, P.S., Gottzman, D. F., and Terbot, J. W., (1972), “Novel heat exchanger increases cascade cycle efficiency for nature gas liquefaction,” inAdvances in Cryogenic Engineering, K. D. Timmerhaus, ED., Plenum, New York, pp. 420-437. [43] 林岳儒, (2003). '孔隙結構對燒結式熱導管性能之影響' 國立台灣大學碩士論文。 [44] Incropera, F. P., and Dewitt, D.P., (2001). ' Fundamentals of heat and mass transfer ' 5th Ed, Wiley, Ch.11, pp.642-673. [45] Kline, S. J., (1985). 'The purposes of uncertainty analysis.' Journal of Fluids Engineering-Transactions of the ASME, 107, pp.153-163. [46] Montgomery, D.C. (2000) 'Design and analysis of experiments', 5th edn. Wiley, London [47] Park, K. J.,Jung, D., (2007)'Boilig heat transfer enhancement with carbon nanotubes for refrigerants used in builing air-conditioning' Energy and Builings, 39, pp.1061-1064 [48] Ribatski, G., and Thome, J. R., (2006). 'Nucleate boiling heat transfer of R134a on enhanced tubes.' Applied Thermal Engineering, 26(10), pp.1018-1031. [49] You, S. M.,Rainey, K. N., and Ammerman, C. N., (2004)'A New Microporous Surface Coating for Enhancement of Pool and Flow Boiling Heat Transfer',Advamces in Heat Transfer,38,pp.73-142 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/37487 | - |
dc.description.abstract | 工業界常使用燒結型毛細結構於發熱面上來增進沸騰熱傳性能,其優異之表現已經獲得普遍的肯定。但近年來隨著能源短缺與散熱需求不斷增加,如何再提升在毛細結構整體性能將為重要的議題。以往文獻探討皆以單孔徑毛細結構為主,雙孔徑毛細結構的報導仍付之闕如,且熱傳性能多針對低瓦數的條件下進行實驗,鮮少有完整的報導。本文旨在利用添加孔洞成型劑於樹枝狀銅粉的方法,燒結製作具雙孔徑的毛細結構並有效控制孔徑參數。在絕對壓力5.5 bar 時的飽和冷媒R-134a於水平測試表面進行池沸騰研究,探討不同孔洞變化對熱傳性能之影響。研究方法藉由改變不同厚度、孔洞成型劑的粒徑與含量,搭配二階因子的統計方法,分析各參數對熱傳性能的影響程度與趨勢,並提供性能改進的空間與方向。最後透過和單孔徑毛細結構與商用增強管比較,以了解雙孔徑毛細結構的熱傳性能與沸騰熱傳特性。
實驗結果經統計分析後,顯示孔洞成性劑含量為影響熱傳性能的最主要關鍵,貢獻百分比為56%,其次是厚度銅粉粒徑比與厚度孔洞成型劑比,分別為20%與14%。在低孔洞成型劑含量、較高厚度銅粉粒徑比和厚度孔洞成型劑比,可獲得性能較佳之毛細結構。實際測試結果,性能較佳之雙孔徑毛細結構,在熱通量約150 KW/m2以下,和單孔徑毛細結構性能差異不大,熱傳係數為光滑表面的6~7倍,當輸入熱通量超過150 KW/m2時,雙孔徑毛細結構與單粉燒結面熱傳係數分別為光滑表面的5.1~6.3倍和2.4~4.2倍;臨界熱通量分別為671 kW/m2和631 kW/m2。高熱通量下熱傳性能差異的主因為大孔提供足夠氣體脫離的通道與增加蒸發面積,降低液氣間之流阻,同時小孔洞吸入流體補充至相變化發生處,有效的提升了熱傳性能。 | zh_TW |
dc.description.abstract | The purpose of this research is to enhance boiling heat transfer capacity by utilizing two pores distribution structure (biporous structure) on the saturated pool boiling heat transfer of R134a. This surface is fabricated with sintered dendritic copper powders and the pore former, Na2CO3, which forms the larger pores in the matrix. By changing the volumetric ratio of pore former, we are able to alter the porosity and the numbers of larger pores in the porous media. The study was conducted based on a statistical method, with a two-level factorial plan involving three variables (coating thickness/particle size of copper: 6 and 10, coating thickness/particle size of pore former content: 16 and 5, and pore former content: 15% by volume and 25% by volume). Finally, the performance of biporous surface, monoporous surface and commercially enhanced surfaces were compared.
The preceding statistical analysis of experiment data show that the boiling performance and characteristics are strongly dependent on the pore former contents (56% of percent contribution) and the better performance tend to have less pore former contents, higher thickness/particle size of copper, and higher thickness/particle size of pore formers. This information provides a direction of the potential improvement. The heat transfer coefficients of biporous and monoporous surface are not much different at low heat flux(less than about 150 kW/m2). The heat transfer enhancement ratios are 6~7 times compared to a smooth surface. For high heat flux removal (higher than 150kW/m2), the heat transfer enhancement ratios of biporous surfaces are 5.1~6.3 and 2.4~4.2 times over a smooth and monoporous surfaces, respectively. The critical heat fluxes for each kind are 671 kW/m2 and 631 kW/m2. At high heat flux, the biporous surface can continuously remove heat at high heat transfer coefficient. The larger pores provide more vapor pathways for bubbles generated inside the structure and reduce the liquid-vapor counterflow resistance adjacent to the surface, while the smaller pores continue to function as liquid supply routes. Therefore, biporous surface is very attractive for high heat flux application. | en |
dc.description.provenance | Made available in DSpace on 2021-06-13T15:29:52Z (GMT). No. of bitstreams: 1 ntu-97-R95522315-1.pdf: 9994201 bytes, checksum: 50c62d04c60737f5d99e396f17c26f8a (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | 誌謝 I
摘要 II 目錄 III 圖目錄 VII 表目錄 IX 符號說明 X 第一章 緒論 1 1.1 研究動機與背景 1 1.2 文獻回顧 3 1.2.1 毛細結構之熱傳增強表面 3 1.2.2 特殊製程之熱傳增強表面 7 1.3研究目的 11 第二章 實驗原理與理論分析 12 2.1 池沸騰熱傳與沸騰曲線圖 12 2.2 核沸騰曲線之預測公式 13 2.3 臨界熱通量 15 2.4 毛細結構沸騰熱傳 16 2.5 毛細結構表面之臨界熱通量 18 第三章 毛細結構的設計與製造 19 3.1 毛細結構的製造 19 3.1.1 實驗材料 19 3.1.2 製造設備 20 3.1.3 製造步驟 22 3.2 毛細結構參數量測 23 3.2.1 孔隙度 23 3.2.2 有效孔徑 24 3.3 原料之選擇 27 3.3.1 銅粉 27 3.3.2 孔洞成形劑之選擇 28 第四章 實驗設備與方法 30 4.1 熱性能測試系統 30 4.1.1 加熱系統 30 4.1.2 測試容器 32 4.1.3 冷凝與輔助控溫系統 32 4.1.4 資料擷取系統 33 4.2 實驗步驟與方法 34 4.2.1 實驗步驟 34 4.2.2 實驗方法 34 4.3 實驗數據換算 35 4.3.1 冷媒熱物理性質 35 4.3.2 熱散失計算 35 4.3.3 壁面溫度計算 35 4.3.4 熱傳係數計算 36 4.4 誤差分析 36 第五章 實驗設計方法 38 5.1 分析方法與步驟 38 5.2 變異數分析 39 5.3 設計因子的選擇 41 第六章 結果與討論 44 6.1 冷態性能測試 44 6.2 光滑表面熱傳性能測試 48 6.2.1 熱傳比較 48 6.2.2 臨界熱通量比較 50 6.3 雙粉燒結表面熱傳性能測試 52 6.3.1 雙粉燒結表面之熱傳性能分析 52 6.3.2 雙粉燒結表面之臨界熱通量分析 56 6.3.3 雙孔與單孔毛細結構表面性能比較 58 6.3.4 雙孔毛細結構表面與商用管性能比較 60 第七章 結論與建議 62 7.1 結論 62 7.2 建議 64 參考文獻 65 附錄 71 | |
dc.language.iso | zh-TW | |
dc.title | 雙孔徑毛細結構表面於池沸騰之熱傳增強研究 | zh_TW |
dc.title | Enhancement of Pool Boiling Heat Transfer by Biporous Structure Surface | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 周賢福,鄭慶陽,傅武雄,王興華 | |
dc.subject.keyword | 熱傳,池沸騰,雙孔徑毛細結構表面,熱傳增強表面, | zh_TW |
dc.subject.keyword | Heat transfer,Pool boiling,Biporous surface,Enhanced surface, | en |
dc.relation.page | 83 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2008-07-16 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 機械工程學研究所 | zh_TW |
顯示於系所單位: | 機械工程學系 |
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