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dc.contributor.authorDatas Medina, Alejandro
dc.contributor.authorRamos Cabal, Alba
dc.contributor.authorMartí, Antonio
dc.contributor.authordel Cañizo Nadal, Carlos
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Expressió Gràfica a l'Enginyeria
dc.date.accessioned2019-06-26T11:00:50Z
dc.date.available2019-06-26T11:00:50Z
dc.date.issued2016
dc.identifier.citationDatas Medina, A. [et al.]. Ultra high temperature latent heat energy storage and thermophotovoltaic energy conversion. "Energy", 2016, vol. 107, p. 542-549.
dc.identifier.issn0360-5442
dc.identifier.urihttp://hdl.handle.net/2117/135411
dc.description.abstractA conceptual energy storage system design that utilizes ultra high temperature phase change materials is presented. In this system, the energy is stored in the form of latent heat and converted to electricity upon demand by TPV (thermophotovoltaic) cells. Silicon is considered in this study as PCM (phase change material) due to its extremely high latent heat (1800 J/g or 500 Wh/kg), melting point (1410 °C), thermal conductivity (~25 W/mK), low cost (less than $2/kg or $4/kWh) and abundance on earth. The proposed system enables an enormous thermal energy storage density of ~1 MWh/m3, which is 10–20 times higher than that of lead-acid batteries, 2–6 times than that of Li-ion batteries and 5–10 times than that of the current state of the art LHTES systems utilized in CSP (concentrated solar power) applications. The discharge efficiency of the system is ultimately determined by the TPV converter, which theoretically can exceed 50%. However, realistic discharge efficiencies utilizing single junction TPV cells are in the range of 20–45%, depending on the semiconductor bandgap and quality, and the photon recycling efficiency. This concept has the potential to achieve output electric energy densities in the range of 200–450 kWhe/m3, which is comparable to the best performing state of the art Lithium-ion batteries
dc.format.extent8 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Energies
dc.subject.lcshEnergy storage
dc.subject.lcshRenewable energy sources
dc.subject.lcshSolar energy
dc.subject.otherLHTES (Latent heat thermal energy storage)
dc.subject.otherHigh temperature
dc.subject.otherThermophotovoltaics
dc.subject.otherSilicon
dc.subject.otherBoron
dc.subject.otherPCM (Phase change materials)
dc.subject.otherCSP (Concentrated Solar Power)
dc.titleUltra high temperature latent heat energy storage and thermophotovoltaic energy conversion
dc.typeArticle
dc.subject.lemacEnergia -- Emmagatzematge
dc.subject.lemacEnergia solar -- Aplicacions
dc.subject.lemacEnergies renovables
dc.identifier.doi10.1016/j.energy.2016.04.048
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/abs/pii/S0360544216304546
dc.rights.accessOpen Access
local.identifier.drac25152086
dc.description.versionPostprint (author's final draft)
local.citation.authorDatas Medina, Alejandro; Ramos, A.; Martí, A.; Cañizo, C. del
local.citation.publicationNameEnergy
local.citation.volume107
local.citation.startingPage542
local.citation.endingPage549


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