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Extended investigation of LiOH–LiBr binary system for high-temperature thermal energy storage applications

dc.rights.licenseopenen_US
hal.structure.identifierInstitut de Mécanique et d'Ingénierie [I2M]
dc.contributor.authorMAHROUG, Imane
dc.contributor.authorDOPPIU, Stefania
dc.contributor.authorDAUVERGNE, Jean-Luc
hal.structure.identifierInstitut de Mécanique et d'Ingénierie [I2M]
dc.contributor.authorTOUTAIN, Jean
IDREF: 056783183
dc.contributor.authorDEL BARRIO, Elena Palomo
dc.date.accessioned2022-09-12T12:53:04Z
dc.date.available2022-09-12T12:53:04Z
dc.date.issued2022-08
dc.identifier.issn1388-6150en_US
dc.identifier.urioai:crossref.org:10.1007/s10973-022-11468-4
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/142300
dc.description.abstractEnLiOH–LiBr binary system is thoroughly investigated by means of DSC and XRD experimental analysis. Observed discrepancies compared to previous existing studies relate to temperature values of phase equilibria as well as stoichiometric compounds present in the system. From our experimental results, a modified LiOH–LiBr phase diagram is proposed which gives satisfactory explanation to all observations carried out. It includes stoichiometric compounds Li2(OH)Br (peritectoid plateau at 250 °C, x ≤ 0.666), Li3(OH)2Br (stable between 230 and 280 °C, melting peritectically for x ≥ 0.5) and Li4(OH)3Br (peritectic plateau at 289 °C, x ≥ 0.5). It also displays a eutectic transition at 254 °C approx., which extends over the composition range x > 0 to x = 0.66–0.67, with eutectic point at x = 0.40. The disagreements with previous studies also concern the enthalpies of transition. Whatever the transition is considered, the enthalpies measured in this work are much lower than those predicted before. However, the peritectic compound Li4(OH)3Br is still an attractive candidate for TES applications around 300 °C such as Direct Steam Generation CSP technology. In particular, when compared to NaNO3, which the reference material at that temperature, the advantages of using Li4(OH)3Br as heat storage material lie in the higher volumetric latent heat storage capacity (+ 54%) and lower volume changes during phase transitions (3% vs. 11%). This would result in smaller storage tanks, lower size heat exchangers, contributing to decrease the cost of the storage system.
dc.language.isoENen_US
dc.sourcecrossref
dc.subject.enPhase diagram
dc.subject.enperitectic reaction/transitions
dc.subject.enPeritectic compounds
dc.subject.enPhase transitions
dc.subject.enThermal energy storage
dc.title.enExtended investigation of LiOH–LiBr binary system for high-temperature thermal energy storage applications
dc.typeArticle de revueen_US
dc.identifier.doi10.1007/s10973-022-11468-4en_US
dc.subject.halSciences de l'ingénieur [physics]/Matériauxen_US
bordeaux.journalJournal of Thermal Analysis and Calorimetryen_US
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionBordeaux INPen_US
bordeaux.institutionCNRSen_US
bordeaux.institutionINRAEen_US
bordeaux.institutionArts et Métiersen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
bordeaux.import.sourcedissemin
hal.identifierhal-03775374
hal.version1
hal.date.transferred2022-09-12T12:53:06Z
hal.exporttrue
workflow.import.sourcedissemin
dc.rights.ccPas de Licence CCen_US
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