Abstract: A system includes a hydraulic energy transfer system configured to exchange pressures between a first fluid and a second fluid. The system also includes a motor system configured to power the hydraulic energy transfer system and a shaft coupling the motor system and the hydraulic energy transfer system. Additionally, the system includes a shaft seal disposed about the shaft. Further, the system includes a pressure compensator configured to reduce a pressure differential across the shaft seal.

Abstract: A system includes a hydraulic energy transfer system configured to exchange pressures between a first fluid and a second fluid. The system also includes a motor system configured to power the hydraulic energy transfer system and a shaft coupling the motor system and the hydraulic energy transfer system. Additionally, the system includes a shaft seal disposed about the shaft. Further, the system includes a pressure compensator configured to reduce a pressure differential across the shaft seal.

Abstract: A system includes a rotary isobaric pressure exchanger that includes a rotor. The rotor includes a first spotface formed on a first exterior surface of a first longitudinal end of the rotor adjacent to at least one channel. The at least one channel is disposed within the rotor and is configured to receive and to discharge a fluid flow.

Abstract: A system includes a rotary isobaric pressure exchanger (IPX) for transferring energy from a high pressure fluid to a low pressure fluid, including a rotor that rotates circumferentially about a rotational axis and having a first end face and a second end face disposed opposite each other with a plurality of channels extending axially between respective apertures located in the first and second end faces. The system includes a first and second end cover with first and second surfaces that slidingly and sealingly engage the first and second end faces. The first and second end covers have at least one fluid inlet and outlet that rotate about the rotational axis and fluidly communicate with at least one channel of the plurality of channels. The fluid inlets have a plurality of apertures, where each aperture has a first leading edge that corresponds to a contour of at least one channel.