Device, system and method for high level of energetic efficiency for the storage and use of thermal energy of solar origin

A device for storage and transfer of thermal energy associated with incident solar radiation, which device is configured to be used in a solar plant for production of energy based upon a “beam down” configuration, wherein the device is irradiated from above by the incident solar radiation, which device comprises:

• a containment casing and
• a solid storage means consisting of at least one bed of fluidizable particles received inside said casing, which bed of particles, in use, is fluidized by a fluidization gas;
• characterized in that said casing has at least one receiving cavity which extends through said bed of particles and has a first open longitudinal end defining an inlet mouth for the incident solar radiation and a second closed longitudinal end, opposite to said first open end and defining a bottom of the cavity, a side skirt of the cavity being defined between said ends;
• overall arranged such that said bed of particles is arranged circumscribed to said side skirt of said cavity and is configured to be moved by said fluidization gas for storing thermal energy received from the solar radiation through said side skirt;
• wherein said second longitudinal end of said cavity is arranged at a base of said bed of particles.