75944 20191126134634.0 doi 10.1016/j.applthermaleng.2017.12.052 sideral 103300 ART-2018-103300 eng Dannemand, Mark Porosity and density measurements of sodium acetate trihydrate for thermal energy storage 2018 Access copy available to the general public Unrestricted Sodium acetate trihydrate (SAT) can be used as phase change material in latent heat storage with or without utilizing supercooling. The change of density from liquid to solid state leads to formation of cavities inside the bulk SAT during solidification. Samples of SAT which had solidified from supercooled state at ambient temperature and samples which had solidified with a minimal degree supercooled were investigated. The temperature dependent densities of liquid and the two types of solid SAT were measured with a density meter and a thermomechanical analyzer. The cavities formed inside samples of solid SAT, which had solidified after a high or minimal degree of supercooling, were investigated by X-ray scanning and computer tomography. The apparent density of solid SAT depended on whether it solidified from a supercooled state or not. A sample which solidified from a supercooled liquid contained 15% cavities and had a density of 1.26¿g/cm3 at 25¿°C. SAT which had solidified with minimal supercooling contained 9% cavities and had a density of 1.34¿g/cm3 at 25¿°C. The apparent densities of the solid SAT samples were significant lower than the value of solid SAT reported in literature of 1.45¿g/cm3. The density of liquid and supercooled SAT with extra water was also determined at different temperatures. info:eu-repo/grantAgreement/ES/MICINN/ENE2014-57262-R info:eu-repo/grantAgreement/ES/MICINN/ENE2011-28269-C03-01 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 4.026 2018 ENGINEERING, MECHANICAL 13 / 129 = 0.101 2018 Q1 T1 THERMODYNAMICS 7 / 60 = 0.117 2018 Q1 T1 MECHANICS 13 / 134 = 0.097 2018 Q1 T1 ENERGY & FUELS 32 / 103 = 0.311 2018 Q2 T1 1.769 2018 Industrial and Manufacturing Engineering 2018 Q1 Energy Engineering and Power Technology 2018 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0002-8015-4469 Delgado, Monica Universidad de Zaragoza (orcid)0000-0001-7360-4188 Lazaro, Ana Universidad de Zaragoza Penalosa, Conchita Gundlach, Carsten Trinderup, Camilla Johansen, Jakob Berg Moser, Christoph Schranzhofer, Hermann Furbo, Simon 5004 590 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Máquinas y Motores Térmi. 131 (2018), 707-714 Appl. therm. eng. Applied Thermal Engineering 1359-4311 1433998 http://zaguan.unizar.es/record/75944/files/texto_completo.pdf Postprint 91920 http://zaguan.unizar.es/record/75944/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:75944 articulos driver 2019-11-26-13:43:10 ARTICLE