168584 20260211123813.0 doi 10.1016/j.tca.2012.09.002 sideral 78518 ART-2012-78518 eng Delgado, Monica Universidad de Zaragoza (orcid)0000-0002-8015-4469 Determining the rheological behavior of octadecane as phase change material: First approach. 2012 Phase change materials (PCM) are capable of storing thermal energy within a small temperature range due to their high latent heat. In simulations of thermal energy storage (TES) systems with PCMs, natural convection is often not considered, possibly resulting in differences between numerical and experimental results. Since natural convection depends on the viscosity of the melting or melted region, it is important to determine this property in PCMs accurately. This paper presents different measurements carried out with octadecane. Both rotational and oscillatory tests have been carried out and the influence of the gap and the heating and cooling rate on the results has been analyzed. A first approach to the measurement methodology for obtaining the viscosity of octadecane during phase transition and melting is proposed, using a plate as geometry and a Peltier plate as temperature controller. Access copy available to the general public Unrestricted info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 1.989 2012 CHEMISTRY, ANALYTICAL 36 / 74 = 0.486 2012 Q2 T2 CHEMISTRY, PHYSICAL 74 / 134 = 0.552 2012 Q3 T2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Peñalosa, Conchita (orcid)0000-0002-9500-974X Lazaro, Ana Universidad de Zaragoza (orcid)0000-0001-7360-4188 Zalba, Belen Universidad de Zaragoza (orcid)0000-0002-6101-580X Gschwande, Stefan 5004 590 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Máquinas y Motores Térmi. 548, 20 (2012), 81-87 Thermochim. acta THERMOCHIMICA ACTA 0040-6031 497336 http://zaguan.unizar.es/record/168584/files/texto_completo.pdf Postprint 495466 http://zaguan.unizar.es/record/168584/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:168584 articulos driver 2026-02-11-10:27:42 ARTICLE