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dc.contributor.authorRathgeber, Christoph
dc.contributor.authorMiró, Laia
dc.contributor.authorCabeza, Luisa F.
dc.contributor.authorHiebler, Stefan
dc.date.accessioned2016-06-15T11:13:09Z
dc.date.issued2014
dc.identifier.issn0040-6031
dc.identifier.urihttp://hdl.handle.net/10459.1/57206
dc.description.abstractThermal energy storages (TES) based on solid–liquid phase change materials (PCM) use the latent heat of the phase transition from solid to liquid and vice versa. The enthalpy change within application relevant temperature ranges has to be determined via calorimetric measurements providing high accuracy. For the most part, enthalpy curves of PCMs are measured either via differential scanning calorimetry (DSC) or via the T-History method, but rarely with both methods. Combined DSC and T-History measurements allow an improved determination of enthalpy curves of PCM, since intrinsic material properties can be separated from properties of the investigated sample and effects of the applied methods. In order to study when both methods are needed to estimate the behaviour of the bulk material in applications, the enthalpy curves upon heating and upon cooling of nine PCM from different material classes were measured via T-History and DSC in both dynamic and step mode. These are: octacosane, decane-1,10-diol, RT80, methylurea, glutaric acid, magnesium chloride hexahydrate, erythritol, sebacic acid and hydroquinone. The comparison of enthalpy curves in terms of melting temperature, degree of subcooling and enthalpy change within application relevant temperature ranges demonstrates the necessity of combined DSC and T-History measurements for materials with volume dependent behaviour. Melting temperatures agree within the limits of RAL testing regulations and considerably less subcooling is observed for T-History samples. If the PCM under investigation can be characterised reasonably with both methods, enthalpy changes determined via DSC and T-History deviate by less than 5%.ca_ES
dc.description.sponsorshipThe work of ZAE Bayern was part of the project EnFoVerM and supported by the German Federal Ministry of Economics and Technology under the project code 0327851D. The work of the University of Lleida was partially funded by the Spanish government (project ENE2011-22722). The authors would like to thank the Catalan Government for the quality accreditation given to their research group GREA (2014 SGR 123). The work leading to this invention has received funding from the European Union’s Seventh Framework Programme (FP7/2007-2013) under grant agreement n PIRSES-GA-2013-610692 (INNOSTORAGE). Laia Miró would like to thank the Spanish Government for her research fellowship at ZAE Bayern (BES-2012-051861).ca_ES
dc.language.isoengca_ES
dc.publisherElsevierca_ES
dc.relationMICINN/PN2008-2011/ENE2011-22722ca_ES
dc.relation.isformatofReproducció del document publicat a https://doi.org/10.1016/j.tca.2014.09.022ca_ES
dc.relation.ispartofThermochimica Acta, 2014, vol. 596, p. 79-88ca_ES
dc.rights(c) Elsevier, 2014ca_ES
dc.subjectLatent heat storageca_ES
dc.subjectPhase change materials (PCM)ca_ES
dc.subjectDifferential scanning calorimetry (DSC)ca_ES
dc.subjectT-History methodca_ES
dc.titleMeasurement of enthalpy curves of phase change materials via DSC and T-History: When are both methods needed to estimate the behaviour of the bulk material in applications?ca_ES
dc.typearticleca_ES
dc.identifier.idgrec021784
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_ES
dc.identifier.doihttps://doi.org/10.1016/j.tca.2014.09.022
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/610692ca_ES
dc.date.embargoEndDate10000-01-01


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