Vpliv stehiometrije reaktantov na polarizacijsko krivuljo gorivne celice s protonsko izmenjalno membrano

zaključna naloga Razvojno raziskovalnega programa I. stopnje Strojništvo

Gašper Žlebnik (Author), Mihael Sekavčnik (Mentor)

Abstract

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.

Keywords

diplomske naloge;gorivna celica;stehiometrija;protonsko izmenjalna membrana;vlažnost;temperatura;eksperimentalna proga;

Data

Language:	Slovenian
Year of publishing:	2020
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[G. Žlebnik]
UDC:	621.352.6:544.421(043.2)
COBISS:	28217859
Views:	452
Downloads:	100
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Impact of Stoichiometry of the Reactants on the Polarization Curve of the Proton-Exchange-Membrane Fuel Cell
Secondary abstract:	Measuring and analysing our PEM (Proton Exchange Membrane) fuel cells 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 reactants 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.
Secondary keywords:	thesis;fuel cell;stoichiometry;proton exchange membrane;humidity;temperature;experimental system;
Type (COBISS):	Final paper
Study programme:	0
Thesis comment:	Univ. v Ljubljani, Fak. za strojništvo
Pages:	XIV, 32 f.
ID:	12025825