Heat and power storage using aluminium for low and zero energy buildings
| Autor: | Alexander Englert, Dani Carbonell Sanchez, Michel Haller, Mihaela Dudita, Meryem Farchado |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Inert
lcsh:GE1-350 Materials science Zero-energy building Hydrogen business.industry 020209 energy Metallurgy Pellets chemistry.chemical_element 02 engineering and technology Energy storage Renewable energy 020401 chemical engineering chemistry Aluminium 0202 electrical engineering electronic engineering information engineering Coal 0204 chemical engineering business lcsh:Environmental sciences |
| Zdroj: | E3S Web of Conferences, Vol 111, p 04008 (2019) |
| ISSN: | 2267-1242 |
| Popis: | A new concept for seasonal energy storage (both heat and power) for low and zero energy buildings based on an aluminium redox cycle (Al→Al3+→Al) is proposed. The main advantage of this seasonal energy storage concept is the high volumetric energy density of aluminium (21 MWh/m3), which exceeds common storage materials like coal. To charge the storage, oxidized aluminium (Al3+) is reduced to elementary aluminium (Al) in a central processing plant using renewable electricity in summer. In winter, during discharging process, the energy stored in aluminium is released in form of hydrogen and heat via the aluminium – water reaction. Hydrogen is directly converted to electricity and heat in a fuel cell. The discharging phase has been investigated using a laboratory-scale experimental setup. In optimized conditions, heat and hydrogen is reliably produced for all types of aluminium forms (grit, pellets, foil). A high efficiency of the conversion to hydrogen was obtained (>95%). The remaining challenge is to optimize the entire cycle, e.g. the aluminium recovery process via the use of climate-neutral inert electrodes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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