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Numerical Studies of PEM Fuel Cell with Serpentine Flow-Field for Sustainable Energy Use

Sang-Hoon Jang
Department of Mechanical Engineering & High Safety Vehicle Core Technology Research Center, INJE University, Republic of Korea

GiSoo Shin
Department of Mechanical Engineering & High Safety Vehicle Core Technology Research Center, INJE University, Republic of Korea

Hana Hwang
Department of Mechanical Engineering & High Safety Vehicle Core Technology Research Center, INJE University, Republic of Korea

Kap-Seung Choi
Department of Mechanical Engineering & High Safety Vehicle Core Technology Research Center, INJE University, Republic of Korea

Hyung-Man Kim
Department of Mechanical Engineering & High Safety Vehicle Core Technology Research Center, INJE University, Republic of Korea

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp110571205

Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:10, s. 1205-1210

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Publicerad: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (tryckt), 1650-3740 (online)

Abstract

This paper proposes the numerical analyses on performance for PEMFC in the aspects of water management and distribution of current density were performed to compare serpentine channel flow field of 5 passes 4 turns serpentine and 25cm2 reaction surface between with and without sub-channel at rib. Through the supplement of sub-channel flow field; the improvement of water removal characteristic inside channel was confirmed from the numerical results because the flow direction of under-rib convection is changed into the sub-channel. Reacting gases supplied from entrance disperse into sub-channel flow field and electrochemical reaction occurs uniformly over the reaction surface. Therefore; it was also known that total current density distributions become uniform because retention time of reacting gases traveling to sub-channel flow field is longer than main channel. At the averaged current density of 0.6 A/cm2; the results show that output power for the serpentine flow-field with sub-channel is 8.475 W which is decreased by about 0.35 % compared with 8.505 W for the conventional-advanced serpentine flow-field; whereas the pressure drops on the anode and cathode side for the serpentine flow-field with sub-channel are 0.282 kPa and 1.321 kPa which are decreased by about 22.95 % and 17.12 % compared with 0.366 kPa and 1.594 kPa for the conventional-advanced serpentine flow-field; respectively.

Nyckelord

PEM Fuel Cell; Current density; Water management; Under-rib convection; Sub-channel

Referenser

[1] F. Barbir; PEM Fuel Cells: Theory and Practice; Elsevier Academic Press; 2005.

[2] T. Kanezaki; X. Li and J.J. Baschuk; Cross-leakage flow between adjacent flow channels in PEM fuel cells; J. Power Sources 162; 2006; pp. 415 – 425. doi: 10.1016/j.jpowsour.2006.07.023.

[3] J.H. Nam; K.J. Lee; S.Sohn; C.H. Kim; Multi-pass serpentine flow-fields to enhance under-rib convection in polymer electrolyte membrane fuel cells: Design and geometrical characterization; J. Power Sources 188; 2009; pp. 14 – 23. doi: 10.1016/j.jpowsour.2008.11.093.

[4] D.H. Jeon; S. Greenway; S. shimpalee and J.W. Van Zee; The Effect of Serpentine Flow Field Designs on PEM Fuel Cell Performance; Int. J. Hydrogen Energy 33; 2008; pp. 1052 – 1066 doi: 10.1016/j.ijhydene.2007.11.015.

[5] CD-adapco; ES-PEMFC Methodology and Tutorial Manual; CD-adapco Group; 2008; http://www.adapco.com.

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