zaključna naloga Univerzitetnega študijskega programa I. stopnje Strojništvo - Razvojno raziskovalni program
Vid Šverko (Author), Mihael Sekavčnik (Mentor)

Abstract

V pričujoči zaključni nalogi smo raziskali delovanje nizkotemperaturne gorivne celice s protonsko izmenjalno membrano (PEMFC). V ta namen smo uporabili eksperimentalni testni sistem, ki je sestavljen iz elektrolizerja, multimetrov, vira napetosti, dveh shramb plinov in membransko-elektrodnega sklopa gorivne celice PEMFC velikosti 9 cm2 (aktivna površina). Vodik smo proizvedli v elektrolitski celici in ga hranili v zalogovniku. Teste smo izvajali z dvema vrstama oksidantov: a) s čistim kisikom, prav tako pridobljenim iz elektrolitske celice in b) z zrakom iz atmosfere. Obratovalno stanje gorivne celice smo določali z nastavitvijo ohmskega upora v merilnem sistemu in izmerili povprečni tok in povprečno napetost, ki ju gorivna celica proizvede. Na ta način smo določili polarizacijske krivulje in ugotovili, da gorivna celica pri obratovanju s kisikom obratuje boljše kot pri obratovanju z zrakom. Največjo moč PEMFC pri obratovanju s kisikom smo izmerili pri upornosti 0,1 Ω in sicer 0,37 W, pri obratovanju z zrakom pa pri upornosti 1 Ω in sicer 0,21 W. Največji izmerjeni energijski izkoristek PEMFC 0,38 je bil izmerjen pri obratovanju s kisikom v točki največje moči.

Keywords

diplomske naloge;PEM gorivna celica;karakteristika;vodik;obnovljivi vir energije;energijski izkoristek;Excel;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [V. Šverko]
UDC: 502.174.3:546.11(043.2)
COBISS: 163329027 Link will open in a new window
Views: 36
Downloads: 11
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Energy characteristics of PEM fuel cell
Secondary abstract: In this final thesis, we investigated the preformance of a low-temperature fuel cell with a proton exchange membrane. For this purpose, we used an experimental test system consisting of an electrolyzer, multimeters, a voltage source, two gas rezervoirs and a membrane-electrode assembly of a 9 cm2 fuel cell. Hydrogen was produced in an electrolytic cell and stored in a storage tank. We tested with two types of oxidants: a) with pure oxygen, also obtained from an electrolytic cell and b) with air from the atmosphere. The operating state of the fuel cell was determined by setting the ohmic resistance in the measuring system and the current and voltage produced by the fuel cell were measured. In this way, we determined the polarization curves and found that the fuel cell operates better when operating with oxygen than when operating with air. It produces the maximum power at lower loads, approximately in the area between 3.3Ω and 0.1Ω. It has the highest efficiency where the resistances in the vicinity are 3.3Ω.
Secondary keywords: thesis;proton exchange membrane (PEM) fuel cell;characteristics;hydrogen;renewable energy source;energy;excel;
Type (COBISS): Final paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za strojništvo
Pages: XIII, 38 f.
ID: 19849297