Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
Ecological aspects of electrolytic hydrogen: comparing renewable and non-renewable sources
Submission Author:
Luigi Viola , SP , Brazil
Co-Authors:
Luigi Viola, Regina Franciélle Silva Paulino, José Luz Silveira
Presenter: Regina Franciélle Silva Paulino
doi://10.26678/ABCM.ENCIT2018.CIT18-0010
Abstract
The environmental problems arising from the use fossil fuel, as the global warming, have promoted the increased use of renewable energy sources. However, solar, wind and hydroelectric hydrogen energy, almost always are labeled as perfectly clean sources, but it is not true. Thereby, this paper aims to clarify how clear can be the hydrogen production via electrolysis, considering renewable and non-renewable sources. Our work highlights the negative environmental impacts coming from wind, photovoltaic and hydroelectric energy, analyzing their life cycle assessment (LCA) studies. The data compilation of global warming potential (GWP) of several energy sources allows comparing the ecological energy efficiency (EEE) of each source for hydrogen production by electrolysis. The results show that hydrogen from hydroelectric and wind energy have high EEE and due to the low energy efficiency of the photovoltaic panel, hydrogen from solar energy has an intermediate position, behind the hydrogen from biomass sources.
Keywords
energy ecological efficiency, global warming potential, Hydrogen, life cycle assesment
