Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
EXPERIMENTAL AND NUMERICAL INVESTIGATION OF LATENT HEAT ENERGY STORAGE IN RADIAL FINNED TUBES SUBMERSED IN PCM
Submission Author:
Felipe Silva dos Santos , MG , Brazil
Co-Authors:
Felipe Silva dos Santos
Presenter: Felipe Silva dos Santos
doi://10.26678/ABCM.COBEM2019.COB2019-0067
Abstract
This paper presents the results of a numerical and experimental investigation realized on finned tubes submersed in the liquid PCM while a cold fluid at lower temperature flows inside the finned tube with the objective of using them in thermal storage systems. The model is based upon the pure conduction mechanism of heat transfer, the enthalpy formulation approach and the control volume method. A home-built numerical code is developed, tested, optimized and validated against experimental results to predict the interface position, interface velocity and the time for complete phase change. The numerical predictions were validated against experimental data produced in Thermal Storage and Heat Pipes Laboratory, on the Energy Department of the Faculty of Mechanical Engineering of the University of Campinas (Unicamp) and an agreement of approximately 96% in the final stages was found. Fins are found to increase the interface position, solidified PCM mass, and interface velocity and to decrease the time for complete phase change of the PCM.
Keywords
phase change, energy storage, finned tube, Interface velocity, Time for complete phase change
