2012年8月20日 星期一

熱交換器與散熱器之成果


林大偉教授
國立台南大學機電系統工程所所長
中華民國航太學會副秘書長
中華民國航太學會普及教育推廣委員會委員

散熱應用
散熱器與熱移除規劃
LED散熱
1 J.C. Hsieh, David T.W. Lin*, and C.H. Cheng, 2011, Optimization of thermal management by the integration of SCGM, finite element method and experiment on the high power LED array, IEEE Transaction on Electron Devices, Vol. 58, No. 4, pp. 1141-1148. SCI , IF:2.255 (Engineering, Electrical & Electronic =32/247)
2 David. T.W. Lin*, C.N. Huang, and C.C. Chang, 2011, The optimization of the heat removal on the LED package, Advanced Science Letters, Vol. 4, No. 6/7, pp. 2301-2305. (SCI , IF:1.253) (Multidisciplinary Sciences=15/57)
3Jui-Ching Hsieh, David T.W. Lin* , Siwapong Kingkaew, Sheng Chung Chen, 2012, The optimal design of the thermal spreading on the high power LEDs, prepared.
4C.Y. Yang, K.C. Liu, I.P. Chu, J.C. Hsieh, David. T.W. Lin and C.H. Cheng, 2009, The temperature optimization of high power LED array, The Proceedings of Asia Symposium on Computational Heat Transfer and Fluid Flow -  (ASCHT09), Vol.3, pp. 309-313, Jeju, Korea, October 20-23. (ISBN: 978-89-961399-4-294550)
5C.P. Huang, J.C. Hsieh, C.Y. Yang, C.H. Cheng, and David T.W. Lin, 2009, Using SCGM to optimize high power LED array design by combining experiment and finite element method, The Proceedings of International Conference on Mechatronic System of Integration and Application (ICMS09), pp.1-5, Tainan, Taiwan, Dec 4-5.
6M.J. Kuo, P.J. Cheng, C.Y. Yang, C.H. Cheng, and David T.W. Lin, 2009, The minimum of thermal resistance design of high power LED package, The Proceedings of International Conference on Mechatronic System of Integration and Application (ICMS09), pp.6-9, Tainan, Taiwan, Dec 4-5.
7C.Y. Yang, K.C. Liu, J.C. Hsieh, David T.W. Lin and C.H. Cheng, 2009, LED location design of high power LED array to the temperature optimization, The Proceedings of International Conference on Mechatronic System of Integration and Application (ICMS09), pp.21-25, Tainan, Taiwan, Dec 4-5.
8H.J. Huang, S.C. Shen, David T.W. Lin and J.C. Hsieh 2009, Experimental study of high power LED array on flat plate heat pipe, The Proceedings of International Conference on Mechatronic System of Integration and Application (ICMS09), pp.60-65, Tainan, Taiwan, Dec 4-5.
9 Siwapong Kingkaew, Jui-Ching Hsieh, David T.W.Lin*, 2010, “Design and optimization of the LED lamp holder,” The 34th National Conference on Theoretical and Applied Mechanics, Yunlin, Taiwan, Nov 19-20.
10林大偉LED陣列之熱傳最佳化設計,主持人,988月至997月,99年度台南大學校內計畫
11林大偉LED燈具散熱最佳化設計,計畫主持人,997月至9912月,99年度學界協助中小企業科技關懷計畫
12林大偉LED燈具之創新設計-LED燈具之散熱最佳化,計畫主持人,996月至9911月,99年度台南縣政府SBIR計畫
13林大偉LED燈具之創新設計-LED燈具之設計介面,計畫主持人,996月至9911月,99年度台南縣政府SBIR計畫
14林大偉UV LED均光性光學模擬,計畫主持人,1007月至1009月,中科院計畫。
15】林大偉,高功率LED之鋁-丙酮板式熱管冷卻模組之研製與最佳化設計,主持人,1018月至1027月,101年度國科會計畫。(NSC 101-2221-E-024 -010 -)
16】黃志平,2010整合實驗 簡易共軛梯度法及多重物理量分析之高功率LED 陣列熱傳最佳化研究國立台南大學機電系統工程研究所碩士論文(指導教授)
17】郭銘仁,2010高功率發光二極體封裝之熱傳研究暨視窗介面開發國立台南大學機電系統工程研究所碩士論文(指導教授)
18】楊倬昱,2010,高功率LED陣列之熱傳最佳化設計,國立台南大學機電系統工程研究所碩士論文(指導教授)
19Siwapong Kingkaew2011Design and optimization of a LED lamp holder using a simplified conjugate gradient method and genetic algorithm,國立台南大學機電系統工程研究所碩士論文(指導教授)


散熱器
1】徐銘鴻,2009,散熱片於衝擊噴流條件下之熱傳特性分析,遠東科技大學機械工程所碩士論文(指導教授)
2David T.W. Lin, Y.C. Hu* and H.Y Li, 2011, The study of the heat transfer analysis on the plate-fin heat sinks by the impinging jet flow, Progress in Computational Fluid Dynamics, Vol. 11, Nos. 3/4, pp. 237-245. SCI , IF:0.451(Thermodynamics =41/51)
3】朱弋鵬,徐銘鴻,林大偉,陳翊航,蔡芳明,2008,於高速衝擊噴流下電子元件冷卻之熱傳分析,中國機械工程學會第二十五屆全國學術研討會(CSME25),彰化,台灣,十一月。
4F.M. Tsai, Y-C Hu, I.P. Chu, H.Y. Li and David. T.W. Lin, 2009, The heat transfer analysis of plate-fin heat sinks by high velocity impinging jet flow, The Proceedings of Asia Symposium on Computational Heat Transfer and Fluid Flow (ASCHT09), Vol.3, pp. 304-308, Jeju, Korea, October 20-23. (ISBN: 978-89-961399-4-294550)
5F.M. Tsai, I.P. Chu, H.Y. Li., Y.C. Hu and David T.W. Lin, 2009, A numerical study of jet cooling effect on the pin fin heat sinks, The Proceedings of International Conference on Mechatronic System of Integration and Application (ICMS09), pp.39-43, Tainan, Taiwan, Dec 4-5.
 6S.C. Chen, C.H. Kang, David. T.W. Lin*, W.M. Yan, 2012, Optimization of the micro channel heat sink by combing genetic algorithm with finite element method, The 1st International Conference of Multi Disciplines of Engineering on Advanced Technology and Environmentalism Design (MDEATED 2012), PATTAYA, Thailand, Mar 6-8.
7陳聖中、李耀榮、林大偉,2011主動式微型致冷器之熱流模擬中國機械工程學會第二十八屆全國學術研討會(CSME28),台中,台灣,十二月。
8林大偉,主動式微型致冷器熱流模擬,計畫主持人,1007月至1009月,工研院計畫。
9】蔡芳明,2010,高速衝擊噴流對於散熱片之熱傳分析,國立台南大學機電系統工程研究所碩士論文(指導教授)


熱管
1 Zi-Wei Yang, Jui-Ching Hsieh, David T.W. Lin*, 2012, An experimental study for compatibility of the aluminum-acetone flat plate heat pipe, The 1st International Conference of Multi Disciplines of Engineering on Advanced Technology and Environmentalism Design (MDEATED 2012), PATTAYA, Thailand, Mar 6-8.
2林大偉,鋁製板式熱管之逆運算分析,計畫主持人,9511月至963月,工研院計畫。
3林大偉,霧化型均熱板之評估分析,計畫主持人,971月至976月,工研院計畫。

 熱交換器
1 David T.W. Lin, 2012, April, Optimization of the shell-and-tube heat exchanger by simplified conjugated gradient method, Advanced Science Letters, Vol. 9, pp.451-455. (SCI , IF:1.253) (Multidisciplinary Sciences=15/57).
2C.Y. Liu, C.H. Cheng, Y.C. Hu, David T.W. Lin2009Optimal design of the shell and tube heat exchanger中國機械工程學會第二十六屆全國學術研討會(CSME26),台南,台灣,十一月。 
3C.Y. Liu, C.H. Cheng, Y.C. Hu and David T.W. Lin, 2009, The optimum model approach of the shell-and-tube heat exchanger, The Proceedings of International Conference on Mechatronic System of Integration and Application (ICMS09), pp.16-20, Tainan, Taiwan, Dec 4-5.
4 David. T.W. Lin, H.T.X. Chi, C.C. Chang, C.C. Wang, and C.N. Huang, 2010, The optimal design process of the plate heat exchanger, 2010 IEEE International Symposium on Computer, Communication, Control and Automation Proceedings, Vol. 2, pp. 237-240. Tainan, Taiwan, May 5-7. SCI-ISTP, EI (NSC98-2221-E-269-016)
5】劉正堯,2010殼管式熱交換器之熱傳最佳化設計國立台南大學機電系統工程研究所碩士論文(指導教授)
6Ha Thi Xuan Chi2010The Optimal design process of the plate heat exchanger,國立台南大學機電系統工程研究所碩士論文(共同指導教授)


換能器
1 Xiao-Dong Wang*, Yu-Xian Huang, Chin-Hsiang Cheng, David T.W. Lin, Chung-Hao Kang, 2012, A three-dimensional numerical modeling of thermoelectric device with consideration of coupling of temperature field and electric potential field, submitted for Applied Energy. (SCI)
2Cheng Fung Shen, Jui-Ching Hsieh, David T.W. Lin*, Yuh-Chung Hu, 2012, The design and fabrication of the vibration-induced energy harvester on the heat pipe generator, The 1st International Conference of Multi Disciplines of Engineering on Advanced Technology and Environmentalism Design (MDEATED 2012), PATTAYA, Thailand, Mar 6-8.
3 林家立,沈承鋒,謝瑞青,林大偉*, 2012, 壓電型熱管發電機之流場研究, 19th National CFD Conference, Penghu, Taiwan, August 16-18, 2012.
4林大偉整合實驗、模擬及最佳化法之壓電型熱管發電機最佳化設計,主持人,1008月至1017月,100年度國科會計畫(NSC-100-2221-E-024-012-)

熱傳量與移熱估算
溫度偵測與控制技術
1 David T.W. Lin, C.C. Wang*, C.Y. Yang, and J.C. Li, 2010, Inverse estimation of temperature boundary conditions with irregular shape of gas tank, Int. J. Heat Mass Transfer, Vol. 53, pp. 4651-4662. SCI , IF:1.898(Engineering, Mechanical=8/122)
2 David T.W. Lin*, C.Y. Yang, J.C. Li, and C.C. Wang, 2011, Dec., Oct., Inverse estimation of unknown heat flux boundary with irregular shape fins, Int. J. Heat Mass Transfer, Vol. 54, pp. 5275-5285. SCI , IF:1.898(Engineering, Mechanical=8/122). SCI , IF:1.898(Engineering, Mechanical=8/122)
3 David. T.W. Lin* and C.Y. Yang, 2007, The estimation of the strength of the heat source in the heat conduction problems, Applied Mathematical Modeling, Vol. 31, pp.2696-2710. SCI , IF:1.371 (Engineering, Multidisciplinary = 16/87)
4 David. T.W. Lin, W.M. Yan*, H.Y. Li, 2008, Inverse problem of unsteady conjugated forced convection between parallel plate channels, Int. J. Heat Mass Transfer, Vol.51, pp.993-1002. (NSC95-2221-E-269-025) SCI , IF:1.898(Engineering, Mechanical=8/122)
5 David. T.W. Lin*, H.Y. Li, W.M. Yan, 2008, Estimating the wall heat flux of unsteady conjugated forced convection between two corotating disks using an inverse solution scheme, ASME J. Heat Transfer, Vol. 30, 12, pp.121702-1~8. (NSC95-2221-E-269-025) SCI , IF:0.94(Engineering, Mechanical=38/122)
6David. T.W. Lin, H.Y. Li, W.M. Yan, 2008, Inverse problem of unsteady conjugated mixed convection flow between two co-rotating discs, ASME J. Heat Transfer, Vol. 30, 12, pp.121702-1~8, referred by “Convective Heat and Mass Transfer in Rotating Disk Systems” Shevchuk, I.V., 2009, ISBN:978-3-642-00717-0.
7David. T.W. Lin and C.Y. Yang, 2006, Inverse estimation of two-dimensional boundary conditions in bio-heat conduction problems, 17th International Symposium on Transport Phenomena (ISTP17), Toyama, Japan, September 4-8.
8David. T.W. Lin, W.M. Yan and H.Y. Li, 2007, The estimation of the strength of the heat source in the unsteady conjugated forced convection problem, The Asia Symposium on Computational Heat Transfer and Fluid Flow, Xi’an, China, October 18-21.
9David. T.W. Lin, C.Y. Yang, P.J. Cheng, and K.C. Liu, 2006, An inverse study of boundary conditions in bio-heat conduction problems, 科技與管理學術研討會,台南,台灣,十二月。
10 C.Y. Yang, David. T.W. Lin, and P.J. Cheng, 2008, A study of bio-heat conduction problems by inverse estimation, Accepted by HEAT 2008, Fifth International Conference on Transport Phenomena In Multiphase Systems, Bialystok, Poland, June 30 - July 3.
11J.C. Li, P.J. Cheng, C.C. Wang, C.Y. Yang and David. T.W. Lin, 2009, Inverse estimation of temperature boundary on the gas tank, The Proceedings of Asia Symposium on Computational Heat Transfer and Fluid Flow (ASCHT09), Vol.3, pp. 299-303, Jeju, Korea, October 20-23. (ISBN: 978-89-961399-4-294550)
12J.C. Li, C.C. Wang, C.Y Yang and David T.W. Lin, 2009, An analysis of the high pressure gas tank with inverse method, The Proceedings of International Conference on Mechatronic System of Integration and Application (ICMS09), pp.10-15, Tainan, Taiwan, Dec 4-5.
13J.C. Li, David. T.W. Lin*, C.C. Wang and C.Y. Yang, 2010, An analysis of inverse heat conduction problem on irregular shape fins, Proceedings of the International Multiconference of the Engineers and Computer Scientists 2010(IMECS), Vol , pp.1858-1862, HongKong, Mar 17-19. (EI)
14】李仁傑,2010運用循次法分析逆向熱傳導問題,國立台南大學機電系統工程研究所碩士論文(指導教授)
15】學生論文競賽佳作, J.C. Li, C.C. Wang, C.Y Yang and David T.W. Lin, 2009, An analysis of the high pressure gas tank with inverse method, The 1st International Conference on Mechatronic System of Integration and Application 2009 (ICMS09), Tainan, Taiwan, Dec 4-5.
16Best Student Paper Award of The 2010 IAENG International Conference on Industrial Engineering, J.C. Li, David. T.W. Lin, C.C. Wang and C.Y. Yang 2010, An analysis of inverse heat conduction problem on irregular shape fins, The 2010 IAENG International Conference on Industrial Engineering, HongKong, Mar 17-19.


殼管式熱交換器之熱傳最佳化設計

本研究之相關發表
"Optimization of the shell-and-tube heat exchanger by simplified conjugated gradient method", Advanced Science Letters, Vol. 9, pp.451-455, 2012. (SCI , IF:1.253) (Multidisciplinary Sciences=15/57)
C.Y. Liu, C.H. Cheng, Y.C. Hu, David T.W. Lin2009Optimal design of the shell and tube heat exchanger中國機械工程學會第二十六屆全國學術研討會(CSME26),台南,台灣,十一月。
劉正堯,2010,殼管式熱交換器之熱傳最佳化設計,國立台南大學機電系統工程研究所碩士論文(指導教授,林大偉)


本研究之目的為針對廣泛的應用於石化工業及一般食品、藥類、化學工業的殼管式熱交換器(Shell-and-Tube Heat Exchanger, STHE)發展一套最佳化數值設計方法,以電腦輔助分析軟體結合最佳化搜尋方法做最佳化設計(Optimal Design)以提高熱交換器之效能。最佳化之架構係以簡易共軛梯度法(Simplified Conjugate Gradient Method)作為最佳化搜尋之方法,再利用多重物理量(Multiphysics)分析軟體COMSOL作為格點產生器及正向解之計算處理工具,並以此方式發展出一成功整合格點產生、正向解計算、及最佳化搜尋等最佳化設計步驟。
在熱交換器分析方面,研究中分別針對三維模型之溫度場進行探討,決定最適合之幾何形狀參數,以提出三維STHE殼管排列與大小之最佳化設計結果。設計參數是管排之間的距離與排列方式,目標函數是進口與出口之間的最大溫差,最佳化之目標為提升熱交換器的降溫性能,以達到最大熱交換的功用。在數值分析中,使用納維爾-斯托克斯方程(Navier-Stokes equations)熱傳方程式(Heat transfer equation)作為統御方程式以求解熱交換器內部之壓力及溫度之分佈。
本研究結果顯示,結合簡易共軛梯度法(SCGM)與數值模擬,進行殼管式熱交換器之最佳化設計,可求得一組最佳化之溫度分佈。藉由最佳化過程中適當的殼管排列幾何參數,可有效達成設計目標,例如提升殼管熱交換的效率等,同時可提高熱交換器的性能。本研究以SCGM為最佳化之演算程式,用以尋找本研究探討圓形熱管在不同的距離參數作用下,對於整體熱交換性能的變化與影響。在三維的殼管式熱交換器設計過程中改善溫度分佈現象為應重視的關鍵。

2010年10月29日 星期五

陸生來台

團隊中多一些不同文化背景的人其實是好事

年輕人提早知道台灣還不夠大,知道競爭者遍佈全球,知道語言的重要,習慣與不同文化的人共事,

我的實驗室中有台灣人,泰國人,越南人,我發覺他們接受的程度比我想像的高,也願意接受比較.

若陸生會削減台生的機會,就讓他們提早面對

我承認並未考慮完整的政策與社會,文化關係,也並非表達支持與否

只是想,拒絕某些事,就教育而言不會是什麼聰明的做法

2010年10月11日 星期一

最佳化於工程問題之應用

        隨著工程問題、系統形狀的複雜,研究者於計算模擬上愈來愈依賴電腦輔助軟體進行設計、分析與製造。套裝軟體協助我們解決了許多的事,但我們亦受限於套裝軟體的功能而無法盡情於研究的無限可能。近年來,已有許多學者開始對這種現象進行改進。最主要的方法便是以文稿(script)的方式執行套裝軟體,如此,吾人便易於將套裝軟體視為執行演算法之一部份副程式而易於結合。例如ACE+以Python寫成,而ANSYS則有一套語法為APDL,COMSOL更是直接利用常見的MATLAB寫出其執行程式。
        我們嘗試以不同的最佳化演算法來進行工程設計,目前已可結合ANSYS與COMSOL二套軟體進行反覆迭代運算。初始進行簡易系統的模擬,如發光二極體陣列之熱均分佈(圖一)、壓力容器設計(圖二)。
圖一LED陣列模擬圖
圖二壓力容器
        繼而,進行較為複雜之模擬如:複合材料之壓力容器設計(圖三)及LED燈具之設計(圖四)並進一步與實際產品進行比較
圖三複合材料壓力容器
圖四LED燈具設計
        同樣的原則俱可應用於與CAD及CAM軟體的結合,或可將不同之演算法(如逆運算法)依此原則進行複雜系統的運用。相信在很短的時間內將會再掀起一波"模擬實驗"之熱潮。