研究生: |
吳一鳴 Wu, Yi-ming |
---|---|
論文名稱: |
整合商用CFD 軟體及簡易型共軛梯度法進行燃料電池堆之最佳化設計 Optimization of Fuel Cell Stacks by Integrating Commercial CFD Package and Simplified Conjugate-Gradient Method |
指導教授: |
鄭金祥
Cheng, Chin-Hsiang |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 航空太空工程學系 Department of Aeronautics & Astronautics |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 中文 |
論文頁數: | 132 |
中文關鍵詞: | 數值模擬 、質子交換膜燃料電池 、SCGM 、流道設計 |
外文關鍵詞: | SCGM, Numerical analysis, Channel design, PEM fuel cell |
相關次數: | 點閱:69 下載:7 |
分享至: |
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本研究針對質子交換膜燃料電池電池堆系統建立三維電、動量、
質傳遞數值分析模型,並使用簡易型共軛梯度法(SCGM)進行各碳板
流道幾何參數的最佳化,以提升燃料電池性能。利用熱流分析軟體
CFD-ACE+ 作為正向解之求解器,可在不同條件下求解燃料電池內
部各物理量之分佈。在數值分析中, 使用那維爾- 史都克斯
(Navier-Stokes equation)作為流場的統御方程式,配合能量及成份守恆方程式與電化學相關方程式,求解燃料電池內部之速度、壓力、濃度及電流密度之分佈。另一方面,亦同時組裝一組4-cell的電池堆進行實驗量測,比較數值與實驗所得之性能曲線,驗證數值解之準確性。
本研究結果顯示,結合簡易型共軛梯度法(SCGM)與數值模擬,進行
電池堆流道高度分佈最佳化設計,確可求得一組最佳化流道高度分佈。
藉由最佳化過程適當的調整各單電池的流道高度分佈,可有效達成不同設計目標,例如使得各單電池流量分佈更加均勻或提升電池堆的輸出功率等,相對提升電池的性能。
This study is aimed at optimization of the channel height distribution in the proton exchange membrane fuel cell (PEMFC) stack through numerical simulation. The approach is developed by integrating a direct problem solver with an optimizer. A commercial computational fluid dynamics code (CFD−ACE+) is used as the direct problem solver, which
is used to simulate the three-dimensional mass, momentum and species transport phenomena as well as the electron- and proton-transfer process taking place in a PEMFC stack. On the other hand, the simplified conjugate-gradient method (SCGM) is employed to build the optimizer, which is combined with the direct problem solver in order to seek the optimal channel height distribution. In the CFD code, the Navier-Stokes equations coupled with the energy, species, and the electrochemical equations were solved. On the other hand, a four-cell stack has been assembled and tested to verify the numerical predictions of the
polarization curve by the direct problem solver. Results show the optimal distributions of the channel heights can be determined by using the present approach to meet various design objectives, such as feeding equal
mass flow rates of the reactant gases into the cells or increasing the power output of the fuel cell stack.
[1]Z. Qi, A. Kaufman, "Activation of low temperature PEM fuel cells," Journal of Power Sources, vol. 111, pp. 181-184, 2002.
[2]L. Wang, A. Husar, T. Zhou, H. Liu, " A parametric study of PEM fuel cell performances," International Journal of Hydrogen Energy, vol. 28, pp. 1263-1272, 2003.
[3]F. Barbir, H. Gorgun, X. Wang, " Relationship between pressure drop and cell resistance as a diagnostic tool for PEM fuel cells," Journal of Power Sources, vol. 141, pp. 96-101, 2005.
[4]C.H. Cheng, M.H. Chang, "Predictions of internal temperature distribution of PEMFC by non-destructive inverse method," Journal of Power Sources, vol. 139, pp. 115-125, 2005.
[5]C.H. Cheng, M.H. Chang, "Non-destructive inverse method for determination of irregular internal temperature distribution in PEMFCs," Journal of Power Sources, vol. 142, pp. 200-210, 2005.
[6]A. Hakenjos, H. Muenter, U. Wittstadt, C. Hebling, " A PEM fuel cell for combined measurement of current and temperature distribution, and flow field flooding," Journal of Power Sources, vol. 131, pp. 213-216, 2004.
[7]馬唯誠,質子交換膜燃料電池全電池數值模擬及參數分析,大同大學機械研究所碩士論文,台北,民國95年。
[8]C.Y. Soong, W.M. Yan, C.Y. Tseng, H.C. Liu, F Chen, H.S. Chu, "Analysis of reactant gas transport in a PEM fuel cell with partially blocked fuel flow channels," Journal of Power Sources, vol. 43, pp. 36-47, 2005.
[9]Y. Shan, S.Y. Choe, S.H. Choi, "Unsteady 2D PEM fuel cell modeling for a stack emphasizing thermal effects," Journal of Power Sources, vol. 165, pp. 196-209, 2007.
[10]T. Berning, N. Djilali, "Three-dimensional computational analysis of transport phenomena in a PEM fuel cell-a parametric study," Journal of Power Sources, vol. 124, pp. 440-452, 2003.
[11]B. Zhou, W. Huang, Y. Zong, A. Sobiesiak, "Three-dimensional computational analysis of transport phenomena in a PEM fuel cell-a parametric study," Journal of Power Sources, vol. 155, pp. 190-202, 2006.
[12]W.M. Yan, C.Y. Soong, F. Chen, H.S. Chu, "Effects of flow distributor geometry and diffusion layer porosity on reactant gas transport and performance of proton exchange membrane fuel cells," Journal of Power Sources, vol. 125, pp. 27-39, 2004.
[13]X. Yu, B. Zhou, A. Sobiesiak, "Water and thermal managementfor Ballard PEM fuel cell stack," Journal of Power Sources, vol. 147, pp. 184-195, 2005.
[14]S. Shimpalee, S. Greenway, J.W. Van Zee, " The impact of channel path length on PEMFC flow-field design," Journal of Power Sources, vol. 160, pp. 398-406, 2006.
[15]Z. Qi, A. Kaufman, " PEM fuel cell stacks operated underdry-reactant conditions," Journal of Power Sources, vol. 109, pp. 469-476, 2002.
[16]W.M. Yan, H.C. Liu, C.Y. Soong, F. Chen, C.H. Cheng, "Numerical study on cell performance and local transport phenomena of PEM fuel cells with novel flow field designs," Journal of Power Sources, vol. 161, pp. 907-919, 2006.
[17]I. Mohamed, N. Jenkins, "Proton exchange membrane(PEM) fuel cell stack configuration using genetic algorithms," Journal of Power Sources, vol. 131, pp. 142-146, 2004.
[18]M. Secanell, B. Carnes, A. Suleman, N. Djilali, "Numerical optimization of proton exchange membrane fuel cell cathodes," Electrochimica Acta, vol. 52, pp. 2668-2682, 2007.
[19]H.H. Lin, C.H. Cheng, C.Y. Soong, F. Chen, W.M. Yan, "Optimization of key parameters in the proton exchange membrane fuel cell," Journal of Power Sources, vol. 162, pp. 246-254, 2006.
[20]S.Y. Kim, W.N. Kim, "Effect of cathode inlet manifold configuration on performance of 10-cell proton-exchange membrane fuel cell," Journal of Power Sources, vol. 166, pp. 430-434, 2007.
[21]K. Jiao, B. Zhou, P. Quan, "Liquid water transport in parallel serpentine channels with manifolds on cathode side of a PEM fuel cell stack," Journal of Power Sources, vol. 154, pp. 124-137, 2006.
[22]K. Jiao, B. Zhou, P. Quan, "Liquid water transport in straight micro-parallel-channels with manifolds for PEM fuel cell cathode," Journal of Power Sources, vol. 157, pp. 226-243, 2006.
[23]C.H. Chen, S.P. Jung, S.C. Yen, "Flow distribution in the manifold of PEM fuel cell stack," Journal of Power Sources, vol. 173, pp. 249-263, 2007.
[24]G. Karimi, J.J. Baschuk, X. Li, "Performance analysis and optimization of PEM fuel cell stacks using flow network approach," Journal of Power Sources, vol. 147, pp. 162-177, 2005.
[25]G. Dagan, Flow and transport in porous formation, Springer-Verlag, 1989.
[26]S. Mazumder, J.V. Cole, "Rigorous 3-D mathematical modeling of PEM fuel cells I. Model Predictions without Liquid Water Transport," Journal of The Electrochemical Society, vol. 150, pp. A1503-A1509, 2003.
[27] D.A.G. Bruggeman, "Calculations of various physical constants of heterogeneous substance : part I, dielectric constants and conductivity of isotropic substance," Ann. Phys, vol. 24, pp. 636-699, 1935.
[28]R.B. Bird, W.E. Stewart, E.N. Lightfoot, Transport phenomena, J John Wiley & Sons, 1960.
[29]J.P. Doormaal, G.D. Raithby, "Enhancements of the SIMPLE method for predicting incompressible fluid flows," Numerical Heat Transfer, vol. 7, pp. 147-163, 1984.
[30]R. David, CRC handbook of chemistry and physics, CRC Press, 2006.
[31]J. Larminie, A. Dicks, Fuel cell system explained, John Wiley & Sons, 2003.
[32]C.H. Cheng, M.H. Chang, "A simplified conjugate-gradientmethod for shape identification based on thermal data," Numerical Heat Transfer, Part B, vol. 43, pp. 1-19, 2003.
[33]M.R. Hestenes, E. Stiefel, "Methods of conjugate gradients for solving linear systems," Journal of Research of the National Bureau of Standards, vol. 49, pp. 409-436, 1952.
[34]R. Fletcher, C.M. Reeves, "Function minimization by conjugate gradients," Computer Journal, vol. 7, pp. 149-154, 1964.
[35]I. Fried, J. Metzler, "SOR vs conjugate gradients in a finite element discretization," International Journal for Numerical Methods in Engineering, vol. 12, pp. 1329-1342, 1978.
[36]G.V. Reklaitis, A. Ravindran and K.M. Ragsdell, Engineering optimization-methods and applications, John Wiley & Sons, 1983.
[37]曾吉生,具複合式雙極板之PEMFC數值研究,成功大學機械研究所碩士論文,台南,民國94年