A Parametric Study of Stack Performance for a 4.8kW PEM Fuel Cell

A Parametric Study of Stack Performance for a 4.8kW PEM Fuel Cell

Bibliographic Details
Main Author: Edwards, Tyler A.
Language:English
Published: Ohio University / OhioLINK 2010
Subjects:
Mechanical Engineering
PEM
PEMFC
parametric study
effects
parameter sensitivity
stack orientation
dynamics
ammonia car
Online Access:http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1275667559
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spelling ndltd-OhioLink-oai-etd.ohiolink.edu-ohiou12756675592021-08-03T05:46:29Z A Parametric Study of Stack Performance for a 4.8kW PEM Fuel Cell Edwards, Tyler A. Mechanical Engineering PEM PEMFC parametric study effects parameter sensitivity stack orientation dynamics ammonia car Parametric testing was conducted to determine the effects of reactant stream temperature, pressure, humidity and flow rate on the voltage and power output of a 4.8kW PEM fuel cell (FC) stack. The effect of physical orientation and coolant temperature on the voltage and power output of the FC stack is discussed. It was determined that the reactant flow rates could be reduced to approximately 90% of the manufacturer's recommended values without significantly affecting the performance of the FC stack. Increasing reactant stream temperature, pressure, and relative humidity increased the power output of the FC stack. The power output of the FC stack was shown to be sensitive to reactant stream temperatures. This effect was more pronounced for loads below approximately 100A. The power output of the FC stack was also observed to increase with increasing coolant temperature. This effect was greater for higher loads. Reactant stream pressure was observed to cause a nearly uniform shift in the ohmic region of the FC stack's polarization curve. The difference in the power output between the high and low pressures tested was approximately 8% from 0-200A load. The power output of the FC stack was not sensitive to changes in the reactant stream relative humidity for values above 70%. Reactant stream relative humidity was shown to have a more pronounced effect for loads less than 100A. The FC stack's physical orientation did not affect the stack's power output for inclinations less than 13.5°. The time required for the FC stack to reach a steady state voltage following abrupt load changes was not significantly different for different step sizes. The voltage observed within 0.1 seconds of all load changes was always within 2% of the steady state value. Based on the results of this study, the FC stack that was tested is well suited for its intended automotive application. 2010-07-20 English text Ohio University / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1275667559 http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1275667559 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection NDLTD
language English
sources NDLTD
topic Mechanical Engineering
PEM
PEMFC
parametric study
effects
parameter sensitivity
stack orientation
dynamics
ammonia car
spellingShingle Mechanical Engineering
PEM
PEMFC
parametric study
effects
parameter sensitivity
stack orientation
dynamics
ammonia car
Edwards, Tyler A.
A Parametric Study of Stack Performance for a 4.8kW PEM Fuel Cell
author Edwards, Tyler A.
author_facet Edwards, Tyler A.
author_sort Edwards, Tyler A.
title A Parametric Study of Stack Performance for a 4.8kW PEM Fuel Cell
title_short A Parametric Study of Stack Performance for a 4.8kW PEM Fuel Cell
title_full A Parametric Study of Stack Performance for a 4.8kW PEM Fuel Cell
title_fullStr A Parametric Study of Stack Performance for a 4.8kW PEM Fuel Cell
title_full_unstemmed A Parametric Study of Stack Performance for a 4.8kW PEM Fuel Cell
title_sort parametric study of stack performance for a 4.8kw pem fuel cell
publisher Ohio University / OhioLINK
publishDate 2010
url http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1275667559
work_keys_str_mv AT edwardstylera aparametricstudyofstackperformancefora48kwpemfuelcell
AT edwardstylera parametricstudyofstackperformancefora48kwpemfuelcell
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