A pressure intensifier, arrangement in an aircraft or spacecraft including a device driveable by a driving pressure difference, aircraft or spacecraft, and method. A pressure intensifier has a motor part with motor-part-side fluid inlet and motor-part-side fluid outlet and a pump part with pump-part-side fluid inlet and pump-part-side fluid outlet. The pressure intensifier, as a positive-displacement machine with at least one rotatable rotor, is driveable by a motor-part-side fluid flow from the motor-part-side fluid inlet to the motor-part-side fluid outlet for conveying pump-part-side fluid flow from the pump-part-side fluid inlet to the pump-part-side fluid outlet. An arrangement in an aircraft or spacecraft includes a device driveable by a driving pressure difference and includes a vacuum booster. An aircraft or spacecraft has a pressure intensifier of the type and/or an arrangement of the type, and a method is disclosed for operating a device in an aircraft or spacecraft.

A rotary isobaric pressure exchanger (IPX) includes: a low-pressure port configured to input or output a first fluid under a first pressure; a rotor fluidly coupled to the low-pressure port, the rotor configured to receive and exchange pressure between the first fluid and a second fluid; a shaft routed through a centerbore formed by the rotary IPX, wherein the shaft is attached to the rotor, wherein the rotary IPX forms a low-pressure passageway from the low-pressure port to the rotor, and wherein the rotary IPX forms a fluid passageway between the low-pressure passageway and the centerbore; and a motor coupled to the shaft, the motor configured to rotate the shaft to drive the rotor.

A rotary isobaric pressure exchanger (IPX) includes: a low-pressure port configured to input or output a first fluid under a first pressure; a rotor fluidly coupled to the low-pressure port, the rotor configured to receive and exchange pressure between the first fluid and a second fluid; a shaft routed through a centerbore formed by the rotary IPX, wherein the shaft is attached to the rotor, wherein the rotary IPX forms a low-pressure passageway from the low-pressure port to the rotor, and wherein the rotary IPX forms a fluid passageway between the low-pressure passageway and the centerbore; and a motor coupled to the shaft, the motor configured to rotate the shaft to drive the rotor.

An exchanger includes a seal; a first channel with an inlet and an outlet; a second channel alongside the first channel and isolated from the first channel by the seal, the second channel including an inlet and an outlet; and a transfer turbine including a first portion with one or more blades located within the first channel, a second portion with one or more blades located within the second channel, and a shaft connecting the first portion and the second portion such that rotation of the first portion is synchronized with rotation of the second portion, the shaft extending through the seal. Related apparatus, systems, techniques, and articles are also described.

An exchanger includes a seal; a first channel with an inlet and an outlet; a second channel alongside the first channel and isolated from the first channel by the seal, the second channel including an inlet and an outlet; and a transfer turbine including a first portion with one or more blades located within the first channel, a second portion with one or more blades located within the second channel, and a shaft connecting the first portion and the second portion such that rotation of the first portion is synchronized with rotation of the second portion, the shaft extending through the seal. Related apparatus, systems, techniques, and articles are also described.

Pressure exchange devices, systems, and related methods may include a tank, a piston, a valve device, and one or more sensors for monitoring a position of the piston in the tank.

Pressure exchange devices, systems, and related methods may include a tank, a piston, a valve device, and one or more sensors for monitoring a position of the piston in the tank.

Devices and systems for exchanging properties between at least two fluid streams and related methods may include a valve device comprising a valve actuator configured to move at variable rates in order to selectively fill and empty at least one tank. Devices for exchanging properties between at least two fluid streams may include a valve device comprising staggered and overlapping openings positioned along a path of a valve actuator. The staggered and overlapping openings may be configured to selectively and gradually place an inlet in communication with at least one tank.

Devices for exchanging properties, such as pressure, between at least two fluid streams and related methods may include pistons coupled to a valve stem. The valve stem and valve body may be configured to define a primary seal between the one or more pistons and the valve body and a secondary seal between the one or more pistons and the valve body.

Devices for exchanging properties, such as pressure, between at least two fluid streams and related methods may include pistons coupled to a valve stem. The valve stem and valve body may be configured to define a primary seal between the one or more pistons and the valve body and a secondary seal between the one or more pistons and the valve body.