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- W2891874667 abstract "Hydrogen energy systems are expected to play a significant role in achieving a sustainable energy sector. This requires that sustainable hydrogen options are actually available and implemented. In order to check the suitability of hydrogen under sustainability aspects, the life cycle assessment methodology is often used. In particular, global warming (i.e., carbon footprint) and cumulative energy demand (CED or energy footprint) are among the most common life-cycle indicators evaluated for hydrogen energy systems. This chapter provides a complete library of consistent (i.e., harmonised) CED values for a high number of hydrogen production options belonging to different technological categories (thermochemical, electrochemical, and biological). Overall, 71 case studies of renewable hydrogen are benchmarked—in terms of CED—against the reference case of conventional (fossil-based) hydrogen from steam reforming of natural gas. Furthermore, a correlation equation between CED and carbon footprint is calculated and applied for the estimation of harmonised CED values. The use of harmonised values allows sound comparisons by mitigating the risk of misinterpretation. The results show that electrochemical hydrogen generally performs better than thermochemical hydrogen, while biological systems show a high dispersion of values. Especially, the use of wind power as the driving energy for electrochemical hydrogen production tends to be associated with a favourable performance." @default.
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- W2891874667 date "2018-09-01" @default.
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- W2891874667 title "Cumulative Energy Demand of Hydrogen Energy Systems" @default.
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- W2891874667 doi "https://doi.org/10.1007/978-981-13-2457-4_2" @default.
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