This paper presents the theoretical analysis and experimental study of the performance of a shallow fluidized bed as a storage system for thermal energy.
River sand is used as a bed with different height values and compressed heated air as an external fluidizing.
A bundle of finned tubes is used as a heat exchanger immersed in the bed for the extraction of stored energy from the bed.
Empirical correlations are offered by experimental work, which show the relations between the instantaneous local temperature within the bed and time as a function of both bed height and inlet air velocity.
Keywords: Heat, Transfer, Fluidized Beds, Heat Storage,.