Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/80264
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dc.contributor.authorFernandes, M.S.-
dc.contributor.authorGaspar, A.R.-
dc.contributor.authorCosta, V.A.F.-
dc.contributor.authorCosta, J.J.-
dc.contributor.authorBrites, G.J.V.N.-
dc.date.accessioned2018-07-17T23:16:47Z-
dc.date.available2018-07-17T23:16:47Z-
dc.date.issued2018-
dc.identifier.issn0196-8904pt
dc.identifier.urihttp://hdl.handle.net/10316/80264-
dc.description.abstractThe optimization and assessment study of a thermal energy adsorption storage system is presented. The system integrates an adsorption heat storage module in a conventional hot water storage tank of a solar thermal system, operating with the silica-gel/water adsorption pair. The system was modeled using TRNSYS® and MATLAB®, and was previously assessed and improved through a set of parametric tests for each main component. In this work, the GenOpt® optimization software was used to obtain the optimal performance of the whole system. It is found that a slender and lengthy adsorber with a large number of thin fins, a thick and lengthy condenser, and an evaporator with a large number of lengthy tubes improve the system’s performance, by increasing the heat transfer areas and the adsorbent mass. The performance also improves by controlling the adsorber-condenser valve only through the system’s pressure and opening the evaporator-adsorber valve at the hot water setpoint temperature. The optimized system presents a 16% saving in annual backup energy consumption compared with a similar conventional storage system, thus validating the results of the previous segregated parametric study. This optimized system operates at the highest performance with the same configuration in different locations/climates, as only the inclination of the solar collector affects the results: larger inclinations improve the system’s performance, by favoring its operation in Winter. Results present this system as a promising solution to increase the energy storage capacity of solar thermal systems, and potentially of systems using other primary energy sources.pt
dc.language.isoengpt
dc.publisherElsevierpt
dc.relationRen4EEnIEQ (PTDC/EMS-ENE/3238/2014, POCI-01-0145-FEDER-016760, LISBOA-01-0145-FEDER-016760)pt
dc.relationSFRH/BD/90520/2012pt
dc.rightsopenAccesspt
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt
dc.subjectThermal energy storagept
dc.subjectDomestic hot waterpt
dc.subjectAdsorptionpt
dc.subjectSilica-gel/water pairpt
dc.subjectNumerical simulationpt
dc.subjectOptimizationpt
dc.titleOptimization of a thermal energy storage system provided with an adsorption module – A GenOpt application in a TRNSYS/MATLAB modelpt
dc.typearticle-
degois.publication.firstPage90pt
degois.publication.lastPage97pt
degois.publication.titleEnergy Conversion and Managementpt
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0196890418301316pt
dc.peerreviewedyespt
dc.identifier.doi10.1016/j.enconman.2018.02.027pt
degois.publication.volume162pt
dc.date.embargo2018-01-01*
dc.date.periodoembargo0pt
item.languageiso639-1en-
item.grantfulltextopen-
item.fulltextCom Texto completo-
Appears in Collections:FCTUC Eng.Mecânica - Artigos em Revistas Internacionais
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