Computational analysis on thermal performance and coolant flow of an air-cooled polymer electrolyte membrane fuel cell / Wan Ahmad Najmi Wan Mohamed and Rahim Atan

Polymer Electrolyte Membrane (PEM) fuel cells are electrochemical power generators that converts the energy potential of a hydrogen-based fuel into electricity with water and heat as the major by-products. The sensitivity of the solid polymer membrane to temperature requires that thermal management...

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Main Authors:	Wan Mohamed, Wan Ahmad Najmi, Atan, Rahim
Format:	Article
Language:	English
Published:	UiTM Press 2010
Subjects:	Electrolytes, electrolyte solutions Polymers and polymer manufacture
Online Access:	http://ir.uitm.edu.my/id/eprint/13730/ http://ir.uitm.edu.my/id/eprint/13730/1/AJ_WAN%20AHMAD%20NAJMI%20WAN%20MOHAMED%20JME%2010.pdf

id	uitm-13730
recordtype	eprints
spelling	uitm-137302016-07-25T03:11:26Z http://ir.uitm.edu.my/id/eprint/13730/ Computational analysis on thermal performance and coolant flow of an air-cooled polymer electrolyte membrane fuel cell / Wan Ahmad Najmi Wan Mohamed and Rahim Atan Wan Mohamed, Wan Ahmad Najmi Atan, Rahim Electrolytes, electrolyte solutions Polymers and polymer manufacture Polymer Electrolyte Membrane (PEM) fuel cells are electrochemical power generators that converts the energy potential of a hydrogen-based fuel into electricity with water and heat as the major by-products. The sensitivity of the solid polymer membrane to temperature requires that thermal management of a PEM fuel cell stack operates efficiently to maintain the temperature at the optimal level. Air cooling is normally applied for industrial PEM fuel cells of up to 2 kW power output. A computational investigation on the effective micro cooling channel geometries was conducted in order to enhance the practical capability of air cooling for a 3 kW stack power output with a reduced conversion efficiency of 30%. Plate and stack assembly simulation cases of a single channel and 40 cooling channel configurations using Computational Fluid Dynamics (CFD) were conducted with constant heat generation. The cooling performance was evaluated based on the boundary heat transfer and shows 100% effectiveness when subjected to airflows with a minimum Reynolds number of 200. The temperature distribution of the stack showed significant temperature gradients exists across the stack where multiple cooling channels provided a reduced gradient, approximately 50% less compared to the single channel. The coolant flow characteristics were also analyzed and an average velocity rise factor (AVRF) was introduced. Validation of the CFD simulation results was performed analytically and the simulation methodology reliability was found satisfactory by comparing the results of single plate simulations to the stack simulations UiTM Press 2010 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/13730/1/AJ_WAN%20AHMAD%20NAJMI%20WAN%20MOHAMED%20JME%2010.pdf Wan Mohamed, Wan Ahmad Najmi and Atan, Rahim (2010) Computational analysis on thermal performance and coolant flow of an air-cooled polymer electrolyte membrane fuel cell / Wan Ahmad Najmi Wan Mohamed and Rahim Atan. Journal of Mechanical Engineering, 7 (2). pp. 15-36. ISSN 1823-5514
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Electrolytes, electrolyte solutions Polymers and polymer manufacture
spellingShingle	Electrolytes, electrolyte solutions Polymers and polymer manufacture Wan Mohamed, Wan Ahmad Najmi Atan, Rahim Computational analysis on thermal performance and coolant flow of an air-cooled polymer electrolyte membrane fuel cell / Wan Ahmad Najmi Wan Mohamed and Rahim Atan
description	Polymer Electrolyte Membrane (PEM) fuel cells are electrochemical power generators that converts the energy potential of a hydrogen-based fuel into electricity with water and heat as the major by-products. The sensitivity of the solid polymer membrane to temperature requires that thermal management of a PEM fuel cell stack operates efficiently to maintain the temperature at the optimal level. Air cooling is normally applied for industrial PEM fuel cells of up to 2 kW power output. A computational investigation on the effective micro cooling channel geometries was conducted in order to enhance the practical capability of air cooling for a 3 kW stack power output with a reduced conversion efficiency of 30%. Plate and stack assembly simulation cases of a single channel and 40 cooling channel configurations using Computational Fluid Dynamics (CFD) were conducted with constant heat generation. The cooling performance was evaluated based on the boundary heat transfer and shows 100% effectiveness when subjected to airflows with a minimum Reynolds number of 200. The temperature distribution of the stack showed significant temperature gradients exists across the stack where multiple cooling channels provided a reduced gradient, approximately 50% less compared to the single channel. The coolant flow characteristics were also analyzed and an average velocity rise factor (AVRF) was introduced. Validation of the CFD simulation results was performed analytically and the simulation methodology reliability was found satisfactory by comparing the results of single plate simulations to the stack simulations
format	Article
author	Wan Mohamed, Wan Ahmad Najmi Atan, Rahim
author_facet	Wan Mohamed, Wan Ahmad Najmi Atan, Rahim
author_sort	Wan Mohamed, Wan Ahmad Najmi
title	Computational analysis on thermal performance and coolant flow of an air-cooled polymer electrolyte membrane fuel cell / Wan Ahmad Najmi Wan Mohamed and Rahim Atan
title_short	Computational analysis on thermal performance and coolant flow of an air-cooled polymer electrolyte membrane fuel cell / Wan Ahmad Najmi Wan Mohamed and Rahim Atan
title_full	Computational analysis on thermal performance and coolant flow of an air-cooled polymer electrolyte membrane fuel cell / Wan Ahmad Najmi Wan Mohamed and Rahim Atan
title_fullStr	Computational analysis on thermal performance and coolant flow of an air-cooled polymer electrolyte membrane fuel cell / Wan Ahmad Najmi Wan Mohamed and Rahim Atan
title_full_unstemmed	Computational analysis on thermal performance and coolant flow of an air-cooled polymer electrolyte membrane fuel cell / Wan Ahmad Najmi Wan Mohamed and Rahim Atan
title_sort	computational analysis on thermal performance and coolant flow of an air-cooled polymer electrolyte membrane fuel cell / wan ahmad najmi wan mohamed and rahim atan
publisher	UiTM Press
publishDate	2010
url	http://ir.uitm.edu.my/id/eprint/13730/ http://ir.uitm.edu.my/id/eprint/13730/1/AJ_WAN%20AHMAD%20NAJMI%20WAN%20MOHAMED%20JME%2010.pdf
first_indexed	2023-09-18T22:50:14Z
last_indexed	2023-09-18T22:50:14Z
_version_	1777417495271964672

Computational analysis on thermal performance and coolant flow of an air-cooled polymer electrolyte membrane fuel cell / Wan Ahmad Najmi Wan Mohamed and Rahim Atan

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