Houaijia, Anis and Roeb, Martin and Monnerie, Nathalie and Sattler, Christian (2015) Solar power tower as heat and electricity source for a solid oxide electrolyzer: a case study. International Journal of Energy Research, 39 (8), pp. 1120-1130. Wiley. doi: 10.1002/er.3316. ISSN 0363-907X.
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/er.3316/abstract
Abstract
High-temperature steam electrolysis (HTSE) consists of the splitting of steam into hydrogen and oxygen at high temperature in solid oxide electrolyzers. Performing the electrolysis process at high temperatures offers the advantage of achieving higher efficiencies as compared to the conventional water electrolysis. Furthermore, this allows the direct use of process heat to generate steam. This paper is related to the FCH JU (Fuel Cells and Hydrogen Joint Undertaking) project ADEL (ADvanced ELectrolyser For hydrogen Production with Renewable Energy Sources), which investigates different carbon-free energy sources to be coupled to the HTSE process. Renewable energy sources are able to provide the high-temperature steam electrolysis (HTSE) process with heat and power. This paper investigates the capability of Concentrating Solar Power (CSP) technologies to provide the HTSE process with the necessary energy demand. The layout of the plant is shown in the following figure. The design of commercial-scale high-temperature steam electrolysis has been carried out. The HTSE plant is coupled to an air cooled solar tower. The configuration and the operating parameters of the solar tower are based on those of the solar tower of Jülich (Germany), which is operated by DLR. This paper presents the results of process analysis performed to evaluate the hydrogen production from a HTSE plant coupled to an 80MWth air solar tower. Additionally, the dynamic behavior of the system during energy fluctuations has been analyzed. The receiver-to-hydrogen efficiency (based on the Higher Heating Value of hydrogen) is 26% at a hydrogen production rate of 680 kg/h in steady-state operation. The overall solar-to-hydrogen efficiency is calculated to be at 18%. Moreover, the analysis under transient conditions shows that a steady-state operation of the plant is only possible for 8 h.
Item URL in elib: | https://elib.dlr.de/97849/ | |||||||||||||||
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Document Type: | Article | |||||||||||||||
Title: | Solar power tower as heat and electricity source for a solid oxide electrolyzer: a case study | |||||||||||||||
Authors: |
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Date: | 5 March 2015 | |||||||||||||||
Journal or Publication Title: | International Journal of Energy Research | |||||||||||||||
Refereed publication: | Yes | |||||||||||||||
Open Access: | No | |||||||||||||||
Gold Open Access: | No | |||||||||||||||
In SCOPUS: | Yes | |||||||||||||||
In ISI Web of Science: | Yes | |||||||||||||||
Volume: | 39 | |||||||||||||||
DOI : | 10.1002/er.3316 | |||||||||||||||
Page Range: | pp. 1120-1130 | |||||||||||||||
Publisher: | Wiley | |||||||||||||||
ISSN: | 0363-907X | |||||||||||||||
Status: | Published | |||||||||||||||
Keywords: | hydrogen; high temperature steam electrolysis; solar energy; electrolyzer; simulation | |||||||||||||||
HGF - Research field: | Energy | |||||||||||||||
HGF - Program: | Renewable Energies | |||||||||||||||
HGF - Program Themes: | Concentrating Solar Systems (old) | |||||||||||||||
DLR - Research area: | Energy | |||||||||||||||
DLR - Program: | E SF - Solar research | |||||||||||||||
DLR - Research theme (Project): | E - Solar Process Technology (old) | |||||||||||||||
Location: | Köln-Porz | |||||||||||||||
Institutes and Institutions: | Institute of Solar Research > Solare Verfahrenstechnik | |||||||||||||||
Deposited By: | Sattler, Prof. Dr. Christian | |||||||||||||||
Deposited On: | 17 Aug 2015 13:23 | |||||||||||||||
Last Modified: | 20 Jun 2021 15:46 |
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