1. Chemical CSP storage system based on a manganese aluminium spinel
- Author
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Tania Morabito, Mauro Capocelli, Anna Chiara Tizzoni, Silvia Licoccia, Salvatore Sau, Natale Corsaro, Cadia D'Ottavi, Tiziano Delise, Annarita Spadoni, Morabito, T., Sau, S., Tizzoni, A. C., Spadoni, A., Capocelli, M., Corsaro, N., D'Ottavi, C., Licoccia, S., and Delise, T.
- Subjects
Materials science ,Cost effectiveness ,020209 energy ,Enthalpy ,chemistry.chemical_element ,02 engineering and technology ,Manganese ,engineering.material ,Fixed bed reactor ,Reaction rate ,Chemical storage ,CSP ,Manganese spinel ,Mixed oxides ,TES ,manganese spinel ,chemical storage ,mixed oxides ,Aluminium ,Thermal ,0202 electrical engineering, electronic engineering, information engineering ,General Materials Science ,Mixed oxide ,Renewable Energy, Sustainability and the Environment ,business.industry ,Spinel ,Settore CHIM/07 - Fondamenti Chimici delle Tecnologie ,021001 nanoscience & nanotechnology ,chemistry ,Chemical engineering ,Computer data storage ,engineering ,0210 nano-technology ,business - Abstract
Chemical storage systems are a promising innovative route to overcome the issue of the solar irradiation storage, resulting as cost effective and with high energy density. A main problem with these kinds of materials is to design a synthesis method for preparing stable reactive structures, presenting at the same time a high volumetric charging/discharging enthalpy. At this purpose, a size controlled spinel was produced, characterized and investigated regarding its thermophysical and kinetics properties. The obtained powder presents an average diameter between 100 and 200 µm and an energy density of 133 J/g and an experimental test was carried out to verify the spinel morphology stability under thermal cycles. The specific heat is similar to other structured chemical storage system and makes the spinel feasible to be used also as sensible accumulation medium. Despite the relatively high particles size, and the expected small exposed reactive area, the charging, and especially discharging reaction rates resulted particularly favourable and comparable with the reported behaviour of micrometric powders. The particularly simple preparation method plus the cost effectiveness of the precursors leads to a quite convenient expected cost for the storage material, absolutely similar to commercially available accumulation systems.
- Published
- 2020