Abstract: An ORC binary cycle geothermal plant, including at least one ORC closed-cycle system and a geothermal system. The geothermal system includes at least one intake line of a geothermal fluid connected to at least one geothermal production well, wherein the fluid includes non-condensable gases; one interface line connected to the intake line, coupled to the ORC system in an interface zone, wherein the fluid exchanges heat with the organic working fluid; one reinjection line connected to the interface line and to at least one geothermal reinjection well. Further at least one separator device configured to separate at least the gases from the fluid; one expander connected to an outlet of the gases by the separator device; and one auxiliary generator connected to the expander. The expander is for interfacing with the system to receive and expand at least the gases after they have exchanged heat with the organic working fluid.

Abstract: An ORC system for generation of energy by Organic Rankine Cycle comprises a turbo-expander (40) of a radial centrifugal type formed by a single rotor disc (108) and provided with an auxiliary opening (40c). The auxiliary opening (40c) is interposed between an inlet (40a) and an outlet (40b) of the turbine (40) and is in fluid connection with an auxiliary circuit (1000, 2000), such as to extract from the turbo-expander (40) or inject into the turbo-expander (40) the organic working fluid at an intermediate pressure between an injection pressure and a discharge pressure.

Abstract: An ORC system for generation of energy by Organic Rankine Cycle comprises a turbo-expander (40) of a radial centrifugal type formed by a single rotor disc (108) and provided with an auxiliary opening (40c). The auxiliary opening (40c) is interposed between an inlet (40a) and an outlet (40b) of the turbine (40) and is in fluid connection with an auxiliary circuit (1000, 2000), such as to extract from the turbo-expander (40) or inject into the turbo-expander (40) the organic working fluid at an intermediate pressure between an injection pressure and a discharge pressure.