A system comprising a non-water working fluid feed stream, a compressor configured to compress the non-water based working fluid, to provide a compressed non-water based working fluid; and an energy recovery system configured to recover energy from the compressed non-water based working fluid, to provide a de-energized compressed non-water based working fluid, wherein the energy recovery system captures at least a portion of excess energy from the compressed non-water based working fluid and converts the captured excess energy to electricity, heat energy, or both electricity and heat energy.

A multiphase fluid pressurized hydroelectric power generation system is disclosed. The system comprises a combination of fluids in the liquid and gas phase in contact with each other, a plurality of water reservoirs where at least one is a closeable water reservoir comprising a closeable volume i.e. a confined space where all fluid flow in and out is controlled, and a source of pressurized fluid arranged for supplying pressurized fluid to the at least one closeable water reservoir. A corresponding method is also disclosed.

System, method, and apparatus for harnessing geothermal power from superhot geothermal fluid (SHGF) and magma reservoirs. An exemplary system includes a steam separator connected directly to a cased wellbore extending between a surface and the underground reservoir of magma. The steam separator separates a gas-phase fluid from condensate formed from the gas-phase fluid. The system also includes a first set of turbines connected to the steam separator and a condensate tank fluidically connected to the steam separator and the first set of turbines. The first set of turbines is configured to generate electricity from the gas-phase fluid received from the steam separator and the condensate tank is fluidically connected to a fluid conduit that supplies condensate to a terminal end of the cased wellbore.

System, method, and apparatus for harnessing geothermal power from superhot geothermal fluid (SHGF) and magma reservoirs. An exemplary system includes a steam separator connected directly to a cased wellbore extending between a surface and the underground reservoir of magma. The steam separator separates a gas-phase fluid from condensate formed from the gas-phase fluid. The system also includes a first set of turbines connected to the steam separator and a condensate tank fluidically connected to the steam separator and the first set of turbines. The first set of turbines is configured to generate electricity from the gas-phase fluid received from the steam separator and the condensate tank is fluidically connected to a fluid conduit that supplies condensate to a terminal end of the cased wellbore.

A system includes a pump for conveying a flow medium, an arrangement for converting the flow medium from a liquid state into a gaseous state, a turbomachine for converting the thermal energy of the flow medium into mechanical work, a condenser for condensing the gaseous flow medium into a liquid state, with a cooling unit for cooling the liquid flow medium being arranged upstream of the pump in order to reduce the compression work.

Renewable geothermal energy harvesting methods may include distributing at least one working fluid from a ground surface into thermal contact with a subterranean geothermal formation; transferring thermal energy from the geothermal formation to the working fluid; distributing the working fluid to the ground surface; and distributing the working fluid directly to at least one thermal application system. Renewable geothermal energy harvesting systems are also disclosed.

Renewable geothermal energy harvesting methods may include distributing at least one working fluid from a ground surface into thermal contact with a subterranean geothermal formation; transferring thermal energy from the geothermal formation to the working fluid; distributing the working fluid to the ground surface; and distributing the working fluid directly to at least one thermal application system. Renewable geothermal energy harvesting systems are also disclosed.

A geothermal energy system utilizes supercritical CO2 turbine and a radial outflow reaction turbine, a Catherine Wheel having wheel arms, that spins around an axle to produce power. A fin portion extends from the radial portion at an offset angle, to an exhaust end. A first working fluid, such as supercritical carbon dioxide flows through an arm conduit within the wheel arm and a second working fluid, such as a hydrocarbon mixes with the first working fluid and both flow through a turbine. The turbine may be configured within the wheel arm conduit or mounted prior to the Catherine Wheel or any other radial outflow reaction turbine, or variable phase turbines available, and it turns as the combined working fluids expand and vaporize. The second working fluid may be condensed and recirculated while the first working fluid is expelled back into a geothermal reservoir.

In a geothermal plant, alternately injecting an acid composition and a caustic composition removes or inhibits scale build-up.

A method of generating electricity from geothermal energy utilizing an in situ closed loop heat exchanger deep within the earth using a recirculating heat transfer fluid to power an in situ modular turbine and generator system within a vertical, large bore, deep, tunnel shaft. The shaft length and diameter are dependent on the shaft temperature and sustaining heat flux. The method further includes methods of deep shaft boring and excavating, liner placement and sealing, shaft transport systems, shaft Heating, Ventilation, and Air Conditioning, and operations and maintenance provisions. The method has few global location restrictions, maximizes thermal efficiency as to make power generation practical, has a small site surface footprint, does not interact with the environment, is sustainable, uses renewable energy, and is a zero release carbon and hazardous substance emitter.