A gas compressor comprising a drum affixed to a rotating shaft, the drum including a plurality of compression channels between a common pressure zone and an interior surface of the drum distal to an axis of rotation. A static vane return assembly adjacent the compression channels includes vanes extending from an inlet at an outer circumference to the common pressure zone and directing gas into the common pressure zone, either through the vanes or via separate channels or ducts. Fluid inside the rotating dmm forms an annular lake that is drawn through the vanes and into the common pressure zone. Fluid is then forced into the compression channels where gas in the fluid is compressed as it travels from the common pressure zone toward the interior surface. The pressurized gas is separated from the liquid prior to leaving the compression channel assembly while the liquid is returned to the lake.

A gas compressor comprising a drum affixed to a rotating shaft, the drum including a plurality of compression channels between a common pressure zone and an interior surface of the drum distal to an axis of rotation. A static vane return assembly adjacent the compression channels includes vanes extending from an inlet at an outer circumference to the common pressure zone and directing gas into the common pressure zone, either through the vanes or via separate channels or ducts. Fluid inside the rotating dmm forms an annular lake that is drawn through the vanes and into the common pressure zone. Fluid is then forced into the compression channels where gas in the fluid is compressed as it travels from the common pressure zone toward the interior surface. The pressurized gas is separated from the liquid prior to leaving the compression channel assembly while the liquid is returned to the lake.

A gas compressor comprising a drum affixed to a rotating shaft, the drum including a plurality of compression channels between a common pressure zone and an interior surface of the drum distal to an axis of rotation. A static vane return assembly adjacent the compression channels includes vanes extending from an inlet at an outer circumference to the common pressure zone and directing gas into the common pressure zone, either through the vanes or via separate channels or ducts. Fluid inside the rotating drum forms an annular lake that is drawn through the vanes and into the common pressure zone. Fluid is then forced into the compression channels where gas in the fluid is compressed as it travels from the common pressure zone toward the interior surface. The pressurized gas is separated from the liquid prior to leaving the compression channel assembly while the liquid is returned to the lake.

A gas compressor comprising a drum affixed to a rotating shaft, the drum including a plurality of compression channels between a common pressure zone and an interior surface of the drum distal to an axis of rotation. A static vane return assembly adjacent the compression channels includes vanes extending from an inlet at an outer circumference to the common pressure zone and directing gas into the common pressure zone, either through the vanes or via separate channels or ducts. Fluid inside the rotating drum forms an annular lake that is drawn through the vanes and into the common pressure zone. Fluid is then forced into the compression channels where gas in the fluid is compressed as it travels from the common pressure zone toward the interior surface. The pressurized gas is separated from the liquid prior to leaving the compression channel assembly while the liquid is returned to the lake.

Disclosed techniques include energy storage and buffering using multiple pressure containers. Liquid and gas are pumped into a subterranean container. The liquid and gas are pressurized in the subterranean container. A pump is coupled to the subterranean container to accomplish the pressurizing of the subterranean container. The pump and the subterranean container are coupled to an above-ground pressure vessel. The above-ground pressure vessel is pressurized using the pump. The above-ground pressure vessel receives excess flow from the pump beyond the flow provided to the subterranean container. The above-ground pressure vessel provides buffering for pressure flowing into or out of the subterranean container. The gas includes air and the liquid includes water. Pressure is extracted from the first subterranean container to drive a turbine. The pressure from the above-ground pressure vessel supplements pressure from the subterranean container to drive the turbine at a substantially constant rate.

A submersible well fluid system for operating submerged in a body of water may include an electric machine and a fluid end. The electric machine includes a rotor and a stator residing in a first housing at specified conditions. The fluid end may include an impeller and be coupled to the electric machine. The submersible well fluid system may also include an adjustable speed drive for the electric machine in the housing. The submersible well fluid system may also include a chemical distribution system for supplying treatment chemicals to the submersible well fluid system, a barrier fluid supply system for supplying a barrier fluid to the submersible well fluid system, and a pressure management system.

A submersible well fluid system for operating submerged in a body of water may include an electric machine and a fluid end. The electric machine includes a rotor and a stator residing in a first housing at specified conditions. The fluid end may include an impeller and be coupled to the electric machine. The submersible well fluid system may also include an adjustable speed drive for the electric machine in the housing. The submersible well fluid system may also include a chemical distribution system for supplying treatment chemicals to the submersible well fluid system, a barrier fluid supply system for supplying a barrier fluid to the submersible well fluid system, and a pressure management system.

Included are electric submersible pump assemblies, methods of use, and systems incorporating said electric submersible pump assemblies. An example electric submersible pump assembly comprises an electric submersible pump comprising a pump intake, a storage chamber in fluid communication with the discharge side of the electric submersible pump, and a tubing configured to allow for fluid communication between the pump intake and the storage chamber such that fluid may flow from the storage chamber into the pump intake.

A centrifugal reservoir pump for processing a hydrogen stream in an aircraft. In particular, a centrifugal reservoir pump including a pump casing, a hydrogen stream inlet, a rotor being rotatably arranged in the interior part of the pump and including rotor vanes for accelerating the hydrogen stream, and two hydrogen stream outlets. Further provided is a tank unit including the centrifugal reservoir pump and a reservoir for hydrogen. Further provided is an aircraft including a centrifugal reservoir pump or a tank unit. Further provided is a method of processing hydrogen in an aircraft.

A centrifugal reservoir pump for processing a hydrogen stream in an aircraft. In particular, a centrifugal reservoir pump including a pump casing, a hydrogen stream inlet, a rotor being rotatably arranged in the interior part of the pump and including rotor vanes for accelerating the hydrogen stream, and two hydrogen stream outlets. Further provided is a tank unit including the centrifugal reservoir pump and a reservoir for hydrogen. Further provided is an aircraft including a centrifugal reservoir pump or a tank unit. Further provided is a method of processing hydrogen in an aircraft.