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Title:	Experimental validation of the exact analytical solution to the steady periodic heat transfer problem in a PCM layer
Author:	Mazzeo, Domenico; Oliveti, Giuseppe; de Gracia, Alvaro; Coma Arpón, Julià; Solé, Aran; Cabeza Fabra, Luisa Fernanda
Other authors:	Universitat Politècnica de Catalunya. Departament de Tecnologia de l'Arquitectura
Abstract:	Phase change materials (PCM) are used in many industrial and residential applications for their advantageous characteristic of high capacity of latent thermal storage by means of an isothermal process. In this context, it is very useful to have predictive mathematical models for the analysis of the thermal performance and for the thermal design of these layers. In this work, an experimental validation of an analytical model that resolves the steady periodic heat transfer problem in a finite layer of PCM is presented. The experimental investigation was conducted employing a PCM with thermophysical and thermochemical behavior very close to those hypothesized in the formulation of the analytical model. For the evaluation of the thermophysical properties of the PCM sample used, an experimental procedure created by the authors was employed. In all tests realized in a sinusoidal and non-sinusoidal periodic regime, the comparison between the measured and calculated trends of the temperature at different sample heights and of the surface heat fluxes show an excellent agreement. Moreover, also having verified the analytical total stored energy, the analytical model constitutes a valid instrument for the evaluation of the latent and sensible contribution and the trend in time of the position of the bi-phase interface.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Edificació::Materials de construcció::Morter -Mortar -Materials--Testing -Analytical model -DSC -Experimental validation -New procedure -PCM -Thermophysical properties -Morter (Material de construcció) -Assaigs de materials
Rights:	Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Submitted version Article
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