Proizvodnja vodika in okoljski odtis glede na ostale energente

Šehić, Timotej (author), Mori, Mitja (mentor)

V diplomski nalogi smo s pomočjo študije življenjskih ciklov ovrednotili okoljske vplive proizvodnje 1 kilograma vodika. Za vrednotenje okoljskih vplivov smo uporabil program GaBi. Z uporabo okoljskih kazalcev metodologije Environmental Footprint - EF 3.0 smo določili, katere tehnologije proizvodnje vodika imajo večji vpliv na okolje ter katere tehnologije so najbolj prijazne okolju. Najčistejši izmed vseh načinov proizvodnje vodika je vodik, ki nastaja kot stranski produkt pri proizvodnji kloroalkalnih snovi. Temu načinu proizvodnje vodika sledi vodik, ki je proizveden s tehnologijo krekinga in vodik proizveden z parnim reformiranjem zemeljskega plina. Največji vpliv na okolje ima vodik, ki je pridobljen z elektrolizo vode, kjer je vhodna električna energija pridobljena pretežno iz jedrskih, hidro in termo elektrarn.

• Language: Slovenian
• Keywords: vodik, elektroliza, parno reformiranje, študija življenjskih ciklov, okoljski vplivi, ogljični odtis, okoljski kazalniki.
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [T. Šehić]
• Year: 2021
• Number of pages: XVI, 43 str.
• PID: 20.500.12556/RUL-130039
• UDC: 661.96:621.357:620.9(043.2)
• COBISS.SI-ID: 81551363
• Publication date in RUL: 10.09.2021

Secondary language

• Language: English
• Title: Hydrogen production and environmental footprint relative to other energy sources

Abstract

In this thesis we analysed environmental impacts of producing 1 kg of hydrogen. We did it using life cycle assessment. We used GaBi software for evaluating environmental impacts. With usage of environmental indicators from methodology Environmental Footprint – EF 3.0 we defined which hydrogen production technologies have the biggest and which the smallest impact on the environment. The cleanest hydrogen is the one produced as a by-product from chlor-alkali production. Hydrogen produced with cracking and steam reforming of natural gas follows. The biggest impact on the environment has electrolysis of water, in which the input electric energy is produced mainly from nuclear, hydro and thermal power plants.

• Keywords: hydrogen, electrolysis, steam reforming, life cycle assessment, environmental impacts, carbon footprint, environmental indicatiors.