20.500.12556/RUL-119181 Vpliv stehiometrije reaktantov na polarizacijsko krivuljo gorivne celice s protonsko izmenjalno membrano Impact of Stoichiometry of the Reactants on the Polarization Curve of the Proton-Exchange-Membrane Fuel Cell Na eksperimentalni progi smo preizkušali delovanje gorivne celic s protonsko izmenjalno membrano (PEM – Proton Exchange Membrane). Le-ta potrebuje za delovanje dovod vodika in kisika (iz zraka), pri čemer mora biti membrana primerno navlažena. Temperatura celice je bila skozi celotno obdobje testa konstantna, 70 °C. S spreminjanjem stehiometrije obeh plinskih medijev (vodika ali kisika) smo dosegali različne merilne rezultate. Izkazalo se je, da ima večji vpliv na zmogljivost gorivne celice spreminjanje stehiometrije kisika zaradi močnejšega vpliva na stabilnost procesa. Measuring and analysing our PEM (Proton Exchange Membrane) fuel cell’s output power was the goal of this experiment. For it to work, we needed an input of hydrogen and oxygen (air), while maintaining proper humidity levels for the membrane. The cell was kept at a temperature of 70 °C throughout the whole course of the test. With the change in stoichiometry of either hydrogen or oxygen, we acquired different results. The logical assumption was, that an increase in the amount of reactants would cause a stronger output. Analysis showed different impacts on the cell output based on which reactant’s stoichiometry was changed. Changing the oxygen input showed a greater effect on the output as results showed a higher chance in a fall of stability of the process. gorivna celica stehiometrija protonsko izmenjalna membrana vlažnost temperatura eksperimentalna proga fuel cell stoichiometry proton exchange membrane humidity temperature experimental system true false false [G. Žlebnik] Slovenski jezik Angleški jezik Zaključna naloga 2020-09-04 08:31:09 2020-09-04 08:31:10 2022-08-31 03:51:49 0000-00-00 00:00:00 2020 0 Ljubljana 0 XIV, 32 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.352.6:544.421(043.2) 223254 28217859 5670.pdf 5670.pdf 1 38DFFC44EC293688D24D402EA073DD59 37b38d31f90bb8b3d6495a2de505f7f42f7f86a997cc924d00f1350c248b4bac c2b41e8b-a1b9-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=133873 Fakulteta za strojništvo 0 0 0