doi:10.1016/j.applthermaleng.2015.07.047engMazo, J.El Badry, A. T.Carreras, J.Delgado, M.Boer, D.Zalba, B.Uncertainty propagation and sensitivity analysis of thermo-physical properties of phase change materials (PCM) in the energy demand calculations of a test cell with passive latent thermal storageART-2015-91578In this work uncertainty propagation and sensitivity analyses have been applied to a case study of an application where PCM is integrated into the envelope of a test cell. The aim of the study is to quantify the influence of the uncertainties associated with the measurements of the thermo-physical properties of PCM on the results of the annual energy consumption. For this purpose, EnergyPlus has been used for the building energy simulation and a Monte Carlo based method has been chosen for the uncertainty and sensitivity analysis. Considering realistic uncertainty ranges for PCM thermo-physical properties, a significant uncertainty of savings on cooling energy demand has been calculated (approximately 10%). Phase change temperature and thermal conductivity have been identified as the most influential input parameters whereas phase change enthalpy is of secondary importance. A method has been proposed in order to calculate a combination of admissible uncertainties for the input variables that reduces output uncertainty to a required value. The method can be used if input variables and the behaviour of the model comply with certain conditions. For the case study, a maximum tolerance for the error of measurements of phase change temperature and thermal conductivity of ±0.3 °C and ±8% respectively is necessary to reduce the uncertainty of savings on cooling energy demand to 5%2015http://zaguan.unizar.es/record/16855510.1016/j.applthermaleng.2015.07.047http://zaguan.unizar.es/record/168555oai:zaguan.unizar.es:168555info:eu-repo/grantAgreement/ES/MICINN/ENE2011-28269-C03-01info:eu-repo/grantAgreement/ES/MICINN/ENE2011-28269-C03-03Applied Thermal Engineering 90 (2015), 596-608by-nc-ndhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.esinfo:eu-repo/semantics/openAccess