Selective Water Sorbents for Multiple Applications, 10. Energy Storage Ability |
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Authors: | Yu.I. Aristov G. Restuccia M.M. Tokarev G. Cacciola |
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Affiliation: | (1) Boreskov Institute of Catalysis, Novosibirsk, Russia;(2) Institute of Energy Transformation and Accumulation, Messina, Italy |
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Abstract: | The application of new selective water sorbents for storage of low temperature heat is analyzed. Values of energy storage ability E are measured by a DSC technique for more than fifteen samples of selective water sorbents based on silica gels, aluminas, carbon Sibunit and aerogels as host matrices and CaCl2, LiBr, MgCl2 as impregnated salts. E-values up to 8.4 kJ/g and 4.0 kJ/g are found for forced and naturally saturated sorbents, which are much higher than for common sorbents, like zeolites and unimpregnated silica gels. The temperature dependence of E gives an estimation of sensible and latent heat contributions as well as the average heat of water desorption and average specific heat of dry sorbents. A comparison between the SWSs and others materials proposed in literature is done. |
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Keywords: | water desorption composite sorbents energy storage latent heat |
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