Optimizing the discharge process of a seasonal sorption storage system by means of design and control approach

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dc.contributor.authorCrespo, Alicia
dc.contributor.authorFrazzica, Andrea
dc.contributor.authorFernàndez Camon, César
dc.contributor.authorGracia Cuesta, Alvaro de
dc.date.accessioned2023-11-22T13:18:28Z
dc.date.available2023-11-22T13:18:28Z
dc.date.issued2023
dc.description.abstractSorption thermal energy storage systems have higher energy densities and low long-term thermal losses compared to traditional energy storage technologies, which makes them very attractive for seasonal heat storage application. Although they have a lot of potential at material level, its operation and system implementation for residential application requires further study. The performance of a seasonal sorption thermal energy storage system strongly depends on the discharging process during the cold season. The present study analysed through numerical simulations different scenarios to enhance the thermal performance of a solar-driven seasonal water-based sorption storage, which supplied space heating and domestic hot water to a single-family house in a cold climate region. All studied scenarios were analysed under optimal control policy. The results indicated that the sorption storage could increase by 9 % its energy density if conservative and constant discharging temperature set points are considered, due to fewer interruptions during the discharge. The energy density of the sorption storage driven by solar energy was highly impacted by the weather conditions, and by the type and availability of low-temperature heat source. Indeed, the energy density of the sorption storage increased by 22 % using a water tank to assist the evaporator of the sorption storage, instead of a latent storage tank. The use of a dry-heater to assist the evaporator with environmental heat was not suitable for the climate studied due to the low hours of operation. The sorption storage system composed of 20 modules of LiCl-silica gel could obtain an energy density and a COP of 139 kWh/m3 and 0.39, respectively, if a constant low-temperature heat source (i.e, geothermal or waste energy) was available.
dc.description.sponsorshipThis work was partially funded by the Ministerio de Ciencia e Innovación - Agencia Estatal de Investigación (PID2021-123511OB-C31 - MCIN/AEI/10.13039/501100011033/FEDER, EU) and by the Ministerio de Ciencia, Innovación y Universidades—Agencia Estatal de Investigación (AEI) (RED2018-102431-T). This work is partially supported by ICREA under the ICREA Academia programme. The authors would also like to thank the Catalan Government for the quality accreditation given to their research group (2017 SGR 1537). GREiA is certified agent TECNIO in the category of technology developers from the Government of Catalonia. Alicia Crespo would also like to acknowledge the financial support of the FI-SDUR grant from the AGAUR of the Generalitat de Catalunya and Secretaria d'Universitats i Recerca del Departament d'Empresa i Coneix-ement de la Generalitat de Catalunya. Alvaro de Gracia wants to thank the Serra Hunter Programme for its position at University of Lleida.
dc.identifier.doihttps://doi.org/10.1016/j.est.2023.106652
dc.identifier.issn2352-152X
dc.identifier.urihttps://repositori.udl.cat/handle/10459.1/464589
dc.language.isoeng
dc.publisherElsevier
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-123511OB-C31/ES/ESTRATEGIAS DE DESCARBONIZACION QUE INTEGRAN EL ALMACENAMIENTO DE ENERGIA TERMICA/
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RED2018-102431-T/ES/RED ESPAÑOLA EN ALMACENAMIENTO DE ENERGIA TERMICA/
dc.relation.isformatof Reproducció del document publicat a https://doi.org/10.1016/j.est.2023.106652
dc.relation.ispartofJournal of Energy Storage, 2023, vol. 60, p. 106652
dc.rightscc-by (c) Alicia Crespo et al., 2023
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectSeasonal thermal energy storage
dc.subjectSorption heat storage
dc.subjectNumerical simulations
dc.subjectSolar thermal energy
dc.subjectPerformance and control optimization
dc.titleOptimizing the discharge process of a seasonal sorption storage system by means of design and control approach
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
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