Method of enhanced heat extraction from a geothermal heat source for the production of electricity thermoelectrically and mechanically via the high-pressure injection of a cryogen into a U-tube or open tube heat exchanger within a geothermal heat source, such as a producing or depleted oil well or gas well, or such as a geothermal water well, or such as hot dry rock; and, method of air-lift pumping water; and, method of electrolyzing the water into hydrogen and oxygen using the electricity genarated

摘要

The present invention relates to generation of electricity by high-pressure, high-enthalpy cryogenic vapor formed by absorption of heat from a geothermal heat source. The cryogen is injected into a U-tube or an open tube heat exchanger extending to the bottom of a geothermal well and thermal energy is gained by the cryogen, causing the cryogen to vaporize into high-enthalpy cryogenic vapor that returns to the surface to power a rotary vane motor that drives an electrical generator. Also, electricity is generated by a geothermal thermoelectric generator placed either underground or above ground using heat extracted from the bottom of the geothermal well via a U-tube or an open tube heat exchanger. The cryogenic vapor is capable of air-lift pumping water from the well. The electricity generated may be used to electrolyze the water into hydrogen and oxygen.