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Model analysis on hydrogen production by hybrid system of SOEC and solar energy
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2017 (English)In: Engineering Letters, ISSN 1816-093X, E-ISSN 1816-0948, Vol. 25, no 4, p. 382-388, article id EL_25_4_04Article in journal (Refereed) Published
Abstract [en]

We investigate the Solid Oxide Electrolysis Cell (SOEC) can convert high temperature steam into H2 and O2 with high efficiency. The SOEC operating temperature is very close to the temperature of solar dish engine system which heats up the water to high temperature steam. We design an advanced the hydrogen production system utilizes solar energy as the only prime energy source in which the thermal energy is provided by solar dish thermal engine subsystem while the electrical energy is supplied by photovoltaic subsystem. Energy and exergy analysis have been conducted to investigate the thermodynamic-electrochemical characteristics of the hydrogen production by hybrid system of SOEC and solar energy. The effects of some important operating parameters, such as temperature, flow rate of H2O and current density have been studied. It is found that an increase in temperature and decrease in operating voltage can reduce the exergy loss in the hybrid system. The findings show that the difference between energy and exergy efficiency is small for the high temperature thermal energy input is only a small fraction of the total energy input. Numerical simulations are implemented for illustration and verification of the effectiveness of the solar energy.

Place, publisher, year, edition, pages
International Association of Engineers , 2017. Vol. 25, no 4, p. 382-388, article id EL_25_4_04
Keywords [en]
Exergy analysis, Hybrid system, Hydrogen production, SOEC, Solar energy, Engines, Exergy, Hybrid systems, Regenerative fuel cells, Solid oxide fuel cells (SOFC), Temperature, Thermal energy, Electrochemical characteristics, Energy and exergy analysis, Energy and exergy efficiency, Hydrogen production systems, Operating parameters, Operating temperature, Solar power generation
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-222940ISI: 000417362600004Scopus ID: 2-s2.0-85034846097OAI: oai:DiVA.org:kth-222940DiVA, id: diva2:1193652
Note

QC 20180327

Available from: 2018-03-27 Created: 2018-03-27 Last updated: 2018-03-27Bibliographically approved

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Zhu, Bin

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CiteExportLink to record
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