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Updated: Feb 25, 2026

Experimental Multiscale Methodology for Predicting Material Fouling Resistance
On the Behavior of Different PCMs in a Hot Water Storage Tank against Thermal Demands
Jacobo Porteiro1, José Luis Míguez2, Bárbara Crespo3
1School of Industrial Engineering, University of Vigo, Campus Lagoas-Marcosende s/n, Vigo 36310, Spain. porteiro@uvigo.es.
Abstract:
Advantages, such as thermal storage improvement, are found when using PCMs (Phase Change Materials) in storage tanks. The inclusion of three different types of materials in a 60 l test tank is studied. Two test methodologies were developed, and four tests were performed following each methodology. A thermal analysis is performed to check the thermal properties of each PCM. The distributions of the water temperatures inside the test tanks are evaluated by installing four Pt-100 sensors at different heights. A temperature recovery is observed after exposing the test tank to an energy demand. An energetic analysis that takes into account the energy due to the water temperature, the energy due to the PCM and the thermal loss to the ambient environment is also presented. The percentage of each PCM that remains in the liquid state after the energy demand is obtained.
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