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Article

Experimental Comparison of Innovative Composite Sorbents for Space Heating and Domestic Hot Water Storage

1
Istituto di Tecnologie Avanzate per l’Energia “Nicola Giordano”, CNR ITAE, Via Santa Lucia sopra Contesse 5, 98126 Messina, Italy
2
Boreskov Institute of Catalysis, Novosibirsk, Ac. Lavrentiev av. 5, 630090 Novosibirsk, Russia
*
Author to whom correspondence should be addressed.
Academic Editors: Saman Nimali Gunasekara, Sedigheh Bigdeli, Alenka Ristić, Cemil Alkan, Takahiro Nomura, Wangzhong Mu and Christoph Rathgeber
Crystals 2021, 11(5), 476; https://doi.org/10.3390/cryst11050476
Received: 6 April 2021 / Revised: 20 April 2021 / Accepted: 21 April 2021 / Published: 24 April 2021
(This article belongs to the Special Issue Crystals for Thermal Energy Storage)
In this study, the development and comparative characterization of different composite sorbents for thermal energy storage applications is reported. Two different applications were targeted, namely, low-temperature space heating (SH) and domestic hot water (DHW) provision. From a literature analysis, the most promising hygroscopic salts were selected for these conditions, being LiCl for SH and LiBr for DHW. Furthermore, two mesoporous silica gel matrixes and a macroporous vermiculite were acquired to prepare the composites. A complete characterization was performed by investigating the porous structure of the composites before and after impregnation, through N2 physisorption, as well as checking the phase composition of the composites at different temperatures through X-ray powder diffraction (XRD) analysis. Furthermore, sorption equilibrium curves were measured in water vapor atmosphere to evaluate the adsorption capacity of the samples and a detailed calorimetric analysis was carried out to evaluate the reaction evolution under real operating conditions as well as the sorption heat of each sample. The results demonstrated a slower reaction kinetic in the vermiculite-based composites, due to the larger size of salt grains embedded in the pores, while promising volumetric storage densities of 0.7 GJ/m3 and 0.4 GJ/m3 in silica gel-based composites were achieved for SH and DHW applications, respectively. View Full-Text
Keywords: sorption; thermal energy storage; composites; space heating; domestic hot water sorption; thermal energy storage; composites; space heating; domestic hot water
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MDPI and ACS Style

Brancato, V.; Gordeeva, L.G.; Caprì, A.; Grekova, A.D.; Frazzica, A. Experimental Comparison of Innovative Composite Sorbents for Space Heating and Domestic Hot Water Storage. Crystals 2021, 11, 476. https://doi.org/10.3390/cryst11050476

AMA Style

Brancato V, Gordeeva LG, Caprì A, Grekova AD, Frazzica A. Experimental Comparison of Innovative Composite Sorbents for Space Heating and Domestic Hot Water Storage. Crystals. 2021; 11(5):476. https://doi.org/10.3390/cryst11050476

Chicago/Turabian Style

Brancato, Vincenza, Larisa G. Gordeeva, Angela Caprì, Alexandra D. Grekova, and Andrea Frazzica. 2021. "Experimental Comparison of Innovative Composite Sorbents for Space Heating and Domestic Hot Water Storage" Crystals 11, no. 5: 476. https://doi.org/10.3390/cryst11050476

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