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Economic comparison of solar hydrogen generation by means of thermochemical cycles and electrolysis

Graf, Daniela and Monnerie, Nathalie and Roeb, Martin and Schmitz, Mark and Sattler, Christian (2008) Economic comparison of solar hydrogen generation by means of thermochemical cycles and electrolysis. International Journal of Hydrogen Energy, 33, pp. 4511-4519. Elsevier. DOI: 10.1016/j.ijhydene.2008.05.086.

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Official URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V3F-4T89394-5&_user=100058&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_version=1&_urlVersion=0&_userid=100058&md5=24926cbcf4e9d94973dfbadbe5f5f53a

Abstract

Hydrogen is acclaimed to be an energy carrier of the future. Currently, it is mainly produced by fossil fuels, which release climate-changing emissions. Thermochemical cycles, represented here by the hybrid-sulfur cycle and a metal oxide based cycle, along with electrolysis of water are the most promising processes for ‘clean’ hydrogen mass production for the future. For this comparison study, both thermochemical cycles are operated by concentrated solar thermal power for multistage water splitting. The electricity required for the electrolysis is produced by a parabolic trough power plant. For each process investment, operating and hydrogen production costs were calculated on a 50MWth scale. The goal is to point out the potential of sustainable hydrogen production using solar energy and thermochemical cycles compared to commercial electrolysis. A sensitivity analysis was carried out for three different cost scenarios. As a result, hydrogen production costs ranging from 3.9–5.6 V/kg for the hybrid-sulfur cycle, 3.5–12.8 V/kg for the metal oxide based cycle and 2.1–6.8 V/kg for electrolysis were obtained.

Document Type:Article
Title:Economic comparison of solar hydrogen generation by means of thermochemical cycles and electrolysis
Authors:
AuthorsInstitution or Email of Authors
Graf, DanielaUNSPECIFIED
Monnerie, NathalieUNSPECIFIED
Roeb, MartinUNSPECIFIED
Schmitz, MarkUNSPECIFIED
Sattler, ChristianUNSPECIFIED
Date:21 August 2008
Journal or Publication Title:International Journal of Hydrogen Energy
Volume:33
DOI:10.1016/j.ijhydene.2008.05.086
Page Range:pp. 4511-4519
Editors:
EditorsEmail
Veziroglu, T. NejatUNSPECIFIED
Publisher:Elsevier
Status:Published
Keywords:Hydrogen, Thermochemical cycles, Electrolysis, Economic comparison
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Solare Stoffumwandlung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Technical Thermodynamics > Solar Research
Deposited By: Dr.rer.nat. Christian Sattler
Deposited On:19 Sep 2008
Last Modified:12 Dec 2013 20:32

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