مهندسی مکانیک مدرس

مهندسی مکانیک مدرس

مدل‌سازی عملکرد پیل‌های سوختی پلیمری با استفاده از مدل فشرده

نویسندگان
1 دانشکده فناوریهای نوین مهندسی، دانشگاه تخصصی فناوری های نوین، آمل
2 دانشگاه تخصصی فناوری های نوین آمل
چکیده
یکی از مهمترین عوامل در کاهش طول عمر پیل‌های سوختی پلیمری، پخش غیریکنواخت جریان در سطح غشاء می‌باشد. از آنجا که میدان شارش نقش زیادی در پخش واکنشگرها و انتقال آب و در نتیجه پخش جریان دارد لذا در این مقاله، با توسعه‌ی مدلی فشرده، پخش آب و جریان در سطح غشاء پیل‌های سوختی پلیمری در دو طرح متفاوت مورد ارزیابی قرار گرفت. در مدل استفاده شده، میدان شارش به بخش‌های مساوی تقسیم‌بندی شده و ارتباط میان هر بخش با سایر بخش‌ها از طریق میدان شارش استفاده شده در پیل سوختی ایجاد می‌گردد. میدان شارش سمت آند در هر دو طرح مارپیچ بوده ولی در سمت کاتد در طرح اول از میدان شارش موازی و در طرح دوم از میدان شارش مارپیچ استفاده شده‏است. شبیه‌سازی برای رطوبت‌های ورودی مختلف از 0 تا 100در هر دو سمت انجام گرفت. نتایج نشان داد که تغییر میدان شارش در یک سمت تاثیر اندکی روی منحنی پلاریزاسیون داشته و در چگالی جریان بالا، طرح دوم از عملکرد بهتری برخوردار است. همچنین، از لحاظ پخش جریان، طرح دوم یکنواختی بهتری را نشان می‌دهد بطوری که در طرح اول در شرایط ورودی اشباع، اختلاف بین درصد جریان تولید شده بین ورودی و خروجی 57/1 درصد می‌باشد که در حالت دوم 45/1 درصد می‌رسد.
کلیدواژه‌ها

عنوان مقاله English

Modeling of PEM fuel cells performance using lumped method

نویسندگان English

Qadir Esmaili 1
Majid Eshagh Nimvari 2
1 هیات علمی
2 Amol University of Special Modern Technologies
چکیده English

One of the most important factors in reducing the lifetime of PEM fuel cells is heterogeneous current distribution on membrane surface. Since flow field plays an important role in reactants distribution and water depletion and consequently current distribution, hence, in this paper, with development of a lumped model, water and current distributions on membrane surface were evaluated in two different designs. In this model, the flow field is divided into equal segments and connection between segments are created through flow field pattern. In both designs, flow field of anode side was serpentine, but on cathode side, parallel and serpentine flow field were used in first and second design, respectively. Simulations were carried out for different input relative humidity from 0 to 100 in both sides. The results showed that flow field had no significant effect on polarization curve and the second design had a little better performance in high current density. Also, in terms of current distribution, the second design shows a better uniformity, so that in the first design in fully saturated inlet condition, difference between the percentage of current generated between the first and last segments is about 1.57 percent which recehes to 1.45 percent in the second case.

کلیدواژه‌ها English

PEM fuel cell
Lumped method
Water management
Current distribution
[1] F. Barbir, PEM fuel cells, Fuel Cell Technology, Eds., pp. 27-51, London: Springer, 2006.
[2] S. G. Kandlikar, M. L. Garofalo, Z. Lu, Water management in a pemfc: water transport mechanism and material degradation in gas diffusion layers, Fuel Cells, Vol. 11, No. 6, pp. 814-823, 2011.
[3] A. Bazylak, Liquid water visualization in PEM fuel cells: A review, International Journal of Hydrogen Energy, Vol. 34, No. 9, pp. 3845-3857, 2009.
[4] H.-W. Wu, A review of recent development: Transport and performance modeling of PEM fuel cells, Applied Energy, Vol. 165, No. 1, pp. 81-106, 2016.
[5] H. Hassanzadeh, S. H. Golkar, M. Barzgary, Modeling of two phase and non-isothermal flow in polymer electrolyte fuel cell, Modares Mechanical Engineering, Vol. 15, No. 2, pp. 313-322, 2015. ( In Persian فارسی (
[6] S. A. Atyabi, E. Afshari, M. Adami, Effects of baffle-blocked flow cathode channel on reactant transport and cell performance of a PEMFC, Modares Mechanical Engineering, Vol. 14, No. 4, pp. 158-166, 2014. (In Persianفارسی )
[7] R. B. Ferreira, D. S. Falcão, V. B. Oliveira, A. M. F. R. Pinto, Numerical simulations of two-phase flow in proton exchange membrane fuel cells using the volume of fluid method – A review, Journal of Power Sources, Vol. 277, No. 1, pp. 329-342, 2015.
[8] S. T. Revankar, P. Majumdar, Fuel Cells: Principles, Design, and Analysis, pp. 457-572, Florida: CRC press, 2014.
[9] J. T. Pukrushpan, A. G. Stefanopoulou, H. Peng, Control of fuel cell breathing, IEEE Control Systems, Vol. 24, No. 2, pp. 30-46, 2004.
[10] D. A. McKay, J. B. Siegel, W. Ott, A. G. Stefanopoulou, Parameterization and prediction of temporal fuel cell voltage behavior during flooding and drying conditions, Journal of Power Sources, Vol. 178, No. 1, pp. 207-222, 2008.
[11] Y. S. Chen, H. Peng, A segmented model for studying water transport in a PEMFC, Journal of Power Sources, Vol. 185, No. 2, pp. 1179-1192, 2008.
[12] V. Liso, S. Simon Araya, A. C. Olesen, M. P. Nielsen, S. K. Kær, Modeling and experimental validation of water mass balance in a PEM fuel cell stack, International Journal of Hydrogen Energy, Vol. 41, No. 4, pp. 3079-3092, 2016.
[13] P. Hong, L. Xu, J. Li, M. Ouyang, Modeling and analysis of internal water transfer behavior of PEM fuel cell of large surface area, International Journal of Hydrogen Energy, Vol. 42, No. 29, pp. 18540-18550, 2017.
[14] Z. Abdin, C. J. Webb, E. M. Gray, PEM fuel cell model and simulation in Matlab–Simulink based on physical parameters, Energy, Vol. 116, No. 1, pp. 1131-1144, 2016.
[15] A. P. Manso, F. F. Marzo, J. Barranco, X. Garikano, M. Garmendia Mujika, Influence of geometric parameters of the flow fields on the performance of a PEM fuel cell. A review, International Journal of Hydrogen Energy, Vol. 37, No. 20, pp. 15256-15287, 2012.
[16] R. W Fox, A. T Mcdonald, Introduction to Flud Mechanics, 6 ed., pp. 310- 407, New York: John Wiley & Sons, 2004.
[17]J. Benitez, Principles and Modern Applications of Mass Transfer Operations, 3 ed., pp. 17-37, New Jersey: John Wiley & Sons, 2016.
[18] T. E. Springer, M. S. Wilson, S. Gottesfeld, Modeling and experimental diagnostics in polymer electrolyte fuel cells, Journal of the Electrochemical Society, Vol. 140, No. 12, pp. 3513-3526, 1993.
[19] J. H. Nam, M. Kaviany, Effective diffusivity and water-saturation distribution in single-and two-layer PEMFC diffusion medium, International Journal of Heat and Mass Transfer, Vol. 46, No. 24, pp. 4595-4611, 2003.
[20] W. M. Rohsenow, J. P. Hartnett, Y. I. Cho, Handbook of Heat Transfer, pp. 651-732, New York: McGraw-Hill, 1998.
[21] T. E. Springer, T. Zawodzinski, S. Gottesfeld, Polymer electrolyte fuel cell model, Journal of the Electrochemical Society, Vol. 138, No. 8, pp. 2334- 2342, 1991.
[22] T. F. Fuller, J. Newman, Water and thermal management in solid‐polymer‐electrolyte fuel cells, Journal of the Electrochemical Society, Vol. 140, No. 5, pp. 1218-1225, 1993.
[23] S. Dutta, S. Shimpalee, J. Van Zee, Numerical prediction of mass-exchange between cathode and anode channels in a PEM fuel cell, International Journal of Heat and Mass Transfer, Vol. 44, No. 11, pp. 2029-2042, 2001.
[24] J. Larminie, A. Dicks, M. S. McDonald, Fuel Cell Systems Explained, 2 ed., pp. 25-43, Chichester: John Wiley & Sons Ltd, 2003.
[25] G. Squadrito, G. Maggio, E. Passalacqua, F. Lufrano, A. Patti, An empirical equation for polymer electrolyte fuel cell (PEFC) behaviour, Journal of Applied Electrochemistry, Vol. 29, No. 12, pp. 1449-1455, 1999.
[26] H. Xi, Dynamic Modeling and Control of Planar SOFC Power Systems, PhD Thesis, Horace H. Rackham School of Graduate Studies, University of Michigan, Michigan, 2007.
[27] L. Xing, Q. Cai, C. Xu, C. Liu, K. Scott, Y. Yan, Numerical study of the effect of relative humidity and stoichiometric flow ratio on PEM (proton exchange membrane) fuel cell performance with various channel lengths: An anode partial flooding modelling, Energy, Vol. 106, No. 1, pp. 631-645, 2016.
[28] Q. Yan, H. Toghiani, J. Wu, Investigation of water transport through membrane in a PEM fuel cell by water balance experiments, Journal of Power Sources, Vol. 158, No. 1, pp. 316-325, 2006.
[29] X. D. Wang, W. M. Yan, Y. Y. Duan, F. B. Weng, G. B. Jung, C. Y. Lee, Numerical study on channel size effect for proton exchange membrane fuel cell with serpentine flow field, Energy Conversion and Management, Vol. 51, No. 5, pp. 959-968, 2010.