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...Sustainable energy science and engineering center fuel cell technology overview performance systems sample calculations experiment using pem goal to provide a better understanding of the its benefits issues that influence application reference handbook th edition us doe october device for directly converting chemical into electrical in constant temperature process besides offering high theoretical efficiency especially at low temperatures cells emit or zero levels pollutants they can run on wide variety fuels ranging from gaseous such as hydrogen natural gas liquid methanol gasoline main applications stationary power generation transportation battery replacement ballard kw pemfc system vehicle...