Environmental And Exergetic Performance
Of Electrolytic Hydrogen Using
Life Cycle Assessment
Author(s)
J. L. Gálvez, L. Pazos, C. García, G. Martínez
& A. González García-Conde
Abstract
Hydrogen is proposed as the most promising solution as a mid and long-term
energy carrier for transport and electricity generation, attending to fossil fuels
scarcity and the necessity of reducing greenhouse gas emissions. Several
problems have to be solved before hydrogen technology could be applied. One of
the main challenges is to develop a sustainable and cost-efficient process for
hydrogen production. In this regard, this work intends to evaluate several
possibilities of electrolytic hydrogen production from different scales (from a
few Nm3/h to several hundred) and different electricity origins (solar, wind and
grid) and to compare electrolysis with steam methane reforming, (which is,
nowadays, the preferred method for hydrogen production). The evaluation and
comparison are made by Life Cycle Assessment tools. The results are focused on
the environmental performances of each process, energy ‘renewability’ and their
exergetic behavior. The performed analysis shows that electrolytic hydrogen
from wind electricity is the best alternative because of its low associated
greenhouse gas emissions, its low environmental impact and the best grade of
renewability of the produced hydrogen.
Keywords: life cycle assessment, hydrogen production, electrolysis, greenhouse
gases.
Keywords
life cycle assessment, hydrogen production, electrolysis, greenhouse gases
Related Book
Other papers in this volume
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