Hydrogen production by the solar-powered hybrid sulfur process: Analysis of the integration of the CSP and chemical plants in selected scenarios

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Abstract

The Hybrid Sulfur (HyS) is a water splitting process for hydrogen production powered with high temperature nuclear heat and electric power; among the numerous thermo-chemical and thermo-electro-chemical cycles proposed in the literature, such cycle is considered to have a particularly high potential also if powered by renewable energy. SOL2HY2 (Solar to Hydrogen Hybrid Cycles) is a 3 year research project, co-funded by the Fuel Cells and Hydrogen Joint Undertaking (FCH JU). A significant part of the project activities are devoted to the analysis and optimization of the integration of the solar power plant with the chemical, hydrogen production plant. This work reports a part of the results obtained in such research activity. The analysis presented in this work builds on previous process simulations used to determine the energy requirements of the hydrogen production plant in terms of electric power, medium (550°C) temperature heat. For the supply of medium temperature (MT) heat, a parabolic trough CSP plant using molten salts as heat transfer and storage medium is considered. A central receiver CSP (Concentrated Solar Power) plant is considered to provide high temperature (HT) heat, which is only needed for sulfuric acid decomposition. Finally, electric power is provided by a power block included in the MT solar plant and/or drawn from the grid, depending on the scenario considered. In particular, the analysis presented here focuses on the medium temperature CSP plant, possibly combined with a power block. Different scenarios were analysed by considering plants with different combinations of geographical location and sizing criteria.
Original languageEnglish
DOIs
Publication statusPublished - 31 May 2016
Event21st International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2015 - Cape Town, South Africa
Duration: 31 May 2016 → …

Conference

Conference21st International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2015
CountrySouth Africa
CityCape Town
Period31/5/16 → …

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Liberatore, R., Lanchi, M., & Turchetti, L. (2016). Hydrogen production by the solar-powered hybrid sulfur process: Analysis of the integration of the CSP and chemical plants in selected scenarios. Paper presented at 21st International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2015, Cape Town, South Africa. https://doi.org/10.1063/1.4949208