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Article Dans Une Revue Applied Energy Année : 2014

Experimental investigation of an innovative thermochemical process operating with a hydrate salt and moist air for thermal storage of solar energy: global performance

Résumé

This paper investigates an innovative open thermochemical system dedicated to high density and long term (seasonal) storage purposes. It involves a hydrate/water reactive pair and operates with moist air. This work focuses on the design of and experimentation with a large scale prototype using SrBr2/H2O as a reactive pair (400 kg of hydrated salt, 105 kWh of storage capacity and a reactor energy density of 203 kWh/m3). Promising conclusions have been obtained regarding the feasibility and performance of such a storage process. Hydration specific powers from 0.75 to 2 W/kg have been reached for a bed salt energy density of 388 kWh/m3. Moreover, two important parameters that control the storage system have been identified and investigated: the equilibrium drop and the mass flow rate of moist air. Both have a strong influence on the reaction kinetics and therefore on the reactor's thermal power.
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Dates et versions

hal-00997765 , version 1 (28-05-2014)

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Benoit Michel, Pierre Neveu, Nathalie Mazet. Experimental investigation of an innovative thermochemical process operating with a hydrate salt and moist air for thermal storage of solar energy: global performance. Applied Energy, 2014, 129, pp.177-186. ⟨10.1016/j.apenergy.2014.04.073⟩. ⟨hal-00997765⟩
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