Agro Fossil Free - Sand battery by Polar Night Energy

Algemene Beschrijving

A “sand battery” is a high temperature thermal energy storage that uses sand or sand-like materials as its storage medium. It stores energy in sand as heat. Its main purpose is to work as a high-power and high-capacity reservoir for excess wind and solar energy. The energy is stored as heat, which can be used to heat homes, or to provide hot steam and high temperature process heat to industries that are often fossil-fuel dependent. Reagarding its structure, it is an insulated silo made of steel housing, filled with sand and heat transfer pipes. It stores energy in the form of heat, not electricity. The heat can be converted back to electricity using turbines like the ORC-turbine or a steam turbine.