Rotary pressure exchanger

A rotary pressure exchanger for transferring pressure from a first fluid to a second fluid, comprising:

• a housing;
• and
• a rotor mounted within the housing, and configured to rotate about an axis of rotation defining an axial direction;
• a plurality of channels disposed inside the rotor, and configured to transfer pressure from the first fluid to the second fluid, each channel of the plurality of channels extends parallel to the axis of rotation,
• the housing comprising a first inlet port configured to supply the first fluid to the plurality of channels in the rotor, a first outlet port configured to discharge the first fluid from the plurality of channels in the rotor, a second inlet port configured to supply the second fluid to the channels in the rotor, and a second outlet port configured to discharge the second fluid from the plurality of channels in the rotor, each channel of the plurality of channels extends from a first axial end to a second axial end so as to form an opening in at least one surface of the first or second axial end, at least one of the first axial end and the second axial end of each channel of the plurality of channels includes a closing element, the closing element for each channel of the plurality of channels attached to the at least one of the first axial end and the second axial end to close the opening in the at least one surface of the first or second axial end, and
• the first inlet port and the second inlet port being radial inlet ports, such that the first fluid and the second fluid are capable of entering the rotor in a radial direction perpendicular to the axial direction, and the first outlet port and the second outlet port being radial outlet ports, such that the first fluid and the second fluid are capable of leaving the rotor in the radial direction.