IPC Classes  ?

• F24V 99/00 - Subject matter not provided for in other main groups of this subclass
• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or

Abstract

A sand-based thermal storage apparatus, and a related system and method for heating a building are provided. The apparatus comprises an outer vessel, an inner vessel, a particulate heat storage material, and an electric heater. An annular interwall air space is defined between a wall of the outer vessel and a wall of the inner vessel, and surrounds the inner vessel. The interwall air space is in fluid communication with an outer vessel inlet and an outer vessel outlet. The particulate heat storage material comprises sand and is disposed in the inner vessel interior space and in contact with the inner vessel wall. At least part of the electric heater is embedded in the particulate heat storage material.

IPC Classes  ?

• F28D 20/00 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or
• F24H 3/06 - Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
• F24H 3/12 - Air heaters with additional heating arrangements
• F28D 20/02 - Heat storage plants or apparatus in generalRegenerative heat-exchange apparatus not covered by groups or using latent heat