Pressure exchange apparatus

A pressure exchange apparatus for transferring the energy of pressurization between two fluids, wherein one fluid is at a relatively higher pressure than the other, comprising:

• a rotatably mounted cylindrical rotor having a pair of spaced apart end faces, having at least one bore extending axially therethrough with each of said bores having an opening at each end thereof with said openings located in said planar end faces;
• a pair of closure plates rigidly affixed to said end faces of said rotor, and slidingly and sealing engaging said end faces, and each having at least one elongated fluid inlet passageway and at least one elongated fluid discharge passageway in each said closure plate, said passageways being positioned so that a fluid inlet passageway in one of said closure plates is aligned with a plurality of said bores in said rotor at such time during the rotation of said rotor as a fluid discharge passageway in the other said closure plates is aligned with the same plurality of said bores, said fluid inlet passageways and said fluid discharge passageways being constantly sealed from each other during the operation by a sealing area, and said bore openings and said passageways being positioned in their respective surfaces so that during rotation of said rotor, said openings at the end of each bore are, in alternating sequence, brought into concurrent alignment with an inlet passageway at one end of the respective bore and a discharge passageway at the other end of the respective bore, and then, at a different time, into concurrent alignment with a discharge passageway at said one end of the respective bore and an inlet passageway opening at said other end of the respective bore, and
• a motive force for cyclically rotating said rotor relative to said closure plate so that each of said bore openings periodically moves through the same path to repeatedly effect said alternating sequence of alignment of said bores with said passageways.