New Method to Characterize Phase Change Materials
A method for thermodynamic characterization of shape-stabilized PCM based on onesingle sample and one-single experiment has been proposed. The simplicity of the experimental device is comparable to that of the T-History method. However, instead of simple energy balances as in T-History method, a numerical heat transfer model is used to retrieve the whole set of parameters/functions characterizing the PCM from temperature measurements at one-single point within the PCM. An efficient inversion technique has been proposed for that. Its most striking feature is that it allows non-parametric identification of the enthalpy-temperature function in an easy way. Such a function is retrieved by solving a problem of moving sources estimation by inversion of a linear heat conduction model.
Pietro VINCENZINI, Kunihito KOUMOTO, Nicola ROMEO and Mark MEHOS
E. Palomo Del Barrio and J. L. Dauvergne, "New Method to Characterize Phase Change Materials", Advances in Science and Technology, Vol. 74, pp. 243-252, 2010