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Experimental Evaluation of the Effect of Inlet Gas Humidification on Fuel Cell Performance

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dc.contributor.authorEvans, John P.en
dc.contributor.committeechairEllis, Michael W.en
dc.contributor.committeememberVon Spakovsky, Michael R.en
dc.contributor.committeememberNelson, Douglas J.en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessioned2011-08-06T14:38:27Zen
dc.date.adate2003-10-06en
dc.date.available2011-08-06T14:38:27Zen
dc.date.issued2003-09-17en
dc.date.rdate2003-10-06en
dc.date.sdate2003-09-30en
dc.description.abstractThe development and evaluation of a fuel cell test stand incorporating various methods for controlling the temperature and humidity of fuel cell reactants is described. The test stand is capable of accurately metering gas flows, controlling the temperature and humidity of the gases, and delivering the gases to the fuel cell in a safe manner. Additionally, the test stand can measure the voltage and current produced by the fuel cell during operation. Two test stands were constructed and evaluated, one using steam injection for fuel cell stacks and the other using flash evaporation for individual fuel cells. Both test stands were shown to provide adequate control at the upper end of the design range. The flash evaporation test apparatus was used to investigate the effect of inlet gas humidity on fuel cell performance. The results from this investigation showed that, for a fuel cell and reactant temperature of 75°C, the best performance was achieved with a high relative humidity (90%RH) for the hydrogen and a comparatively low relative humidity (60%) for the air.en
dc.description.degreeMaster of Scienceen
dc.format.mediumETDen
dc.identifier.otheretd-09302003-185853en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09302003-185853en
dc.identifier.urihttp://hdl.handle.net/10919/9597en
dc.publisherVirginia Techen
dc.relation.haspartJohn_Evans_Masters_Thesis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectfuel cellen
dc.subjectsteam injectionen
dc.subjectflash evaporationen
dc.subjecthumidificationen
dc.subjecthydrogenen
dc.subjectPEMFCen
dc.titleExperimental Evaluation of the Effect of Inlet Gas Humidification on Fuel Cell Performanceen
dc.typeThesisen
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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