Houaijia, Anis and Breuer, Stefan and Thomey, Dennis and Brosig, Christian and Säck, Jan-Peter and Roeb, Martin and Sattler, Christian (2013) Solar hydrogen by high-temperature electrolysis: Flowsheeting and experimental analysis of a tube-type receiver concept for superheated steam production. SolarPACES Conference 2013, 17.-20. Sept. 2013, Las Vegas, USA.
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Official URL: http://cms.solarpaces2013.solarpaces.org/proceedings
Abstract
High-temperature electrolysis (HTE) offers the potential of considerably higher efficiency than conventional alkaline electrolysis when producing hydrogen from water by solar energy. The production rate of the alkaline electrolyzer process is limited since the whole energy demand is covered by electricity. By contrast, in HTE part of the energy can be introduced as high temperature heat from concentrated solar power (CSP) leading to a significantly higher process efficiency. In the internal project SoHTEk a solar tube-type receiver to superheat steam to 700 °C for HTE was developed. The receiver was operated in DLR’s solar simulator with up to 5 kg/h of steam reaching an outlet temperature of about 700 °C at a thermal efficiency of 40 % and a solar power of about 4 kW. In addition, a flowsheeting analysis was carried out of a HTE process with direct steam generation on a solar tower. Simulation of the process at steady-state yielded a thermal-to-hydrogen efficiency of 26 %. A subsequent sensitivity analysis indicated the potential to reach efficiencies of 38 % and more.
Item URL in elib: | https://elib.dlr.de/85144/ | ||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||
Title: | Solar hydrogen by high-temperature electrolysis: Flowsheeting and experimental analysis of a tube-type receiver concept for superheated steam production | ||||||||||||||||||||||||
Authors: |
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Date: | 18 September 2013 | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | solar; hydrogen; high-temperature electrolysis | ||||||||||||||||||||||||
Event Title: | SolarPACES Conference 2013 | ||||||||||||||||||||||||
Event Location: | Las Vegas, USA | ||||||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||||||
Event Dates: | 17.-20. Sept. 2013 | ||||||||||||||||||||||||
Organizer: | SolarPACES | ||||||||||||||||||||||||
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 - Solare Verfahrenstechnik (old) | ||||||||||||||||||||||||
Location: | Köln-Porz | ||||||||||||||||||||||||
Institutes and Institutions: | Institute of Solar Research > Solare Verfahrenstechnik | ||||||||||||||||||||||||
Deposited By: | Sattler, Prof. Dr. Christian | ||||||||||||||||||||||||
Deposited On: | 15 Nov 2013 16:06 | ||||||||||||||||||||||||
Last Modified: | 08 May 2014 23:29 |
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