Abstract: A method of separating multiple phases in a pressurized flow, and employing a nozzle and a rotor having a rotating surface, at least one of the phases being a liquid or solid, the method including the steps:(a) passing the flow through the nozzle to expand the flow,(b) receiving a portion of the flow on the rotor causing the rotor to rotate and said one liquid and/or solid phase to form a rotating liquid and/or solid ring urged toward said surface, and(c) removing at least one of the phases from the rotor during rotation thereof.The phases to be separated may include petroleum and natural gas components, brine and steam components, or high temperature combustion products.

Abstract: A two-phase power source comprises a rotor; a nozzle having an outlet directed to discharge a two-phase jet for impingement on the rotor to rotate same, the nozzle having means to subdivide flow therein; and means to supply a heated first fluid in liquid state to the nozzle for subdivided flow therein toward said outlet and to supply a second and vaporizable fluid in liquid state to the nozzle to receive heat from the first fluid therein causing the second fluid to vaporize in the nozzle and mix with the first fluid in essentially liquid state to produce said discharging jet.