Abstract: A pressure exchanger for hydraulic fracking includes a rotor that is configured to rotate about an axis and includes a plurality of rotor ducts extending parallel to the axis, where each rotor duct extends between a first side and a second side of the rotor that are spaced apart from each other. The pressure exchanger further includes a first end cover that is disposed at the first side of the rotor and defines a first pair of apertures configured to communicate a first fluid including fracking particles, and a second end cover that is disposed at the second side of the rotor and defines a second pair of apertures configured to communicate a second fluid. The first end cover further defines a flush port configured to supply the second fluid into the first side of the rotor in a state in which the first pair of apertures communicate the first fluid with the first side of the rotor.

Abstract: A pressure exchanger for hydraulic fracking includes a rotor that is configured to rotate about an axis and includes a plurality of rotor ducts extending parallel to the axis, where each rotor duct extends between a first side and a second side of the rotor that are spaced apart from each other. The pressure exchanger further includes a first end cover that is disposed at the first side of the rotor and defines a first pair of apertures configured to communicate a first fluid including fracking particles, and a second end cover that is disposed at the second side of the rotor and defines a second pair of apertures configured to communicate a second fluid. The first end cover further defines a flush port configured to supply the second fluid into the first side of the rotor in a state in which the first pair of apertures communicate the first fluid with the first side of the rotor.

Abstract: A pressure exchanger includes a rotor including rotor ducts extending parallel to an axis, a first end cover disposed at a first side of the rotor, and a second end cover disposed at a second side of the rotor. The rotor is configured to rotate about the axis, communicate first fluid and second fluid through the rotor ducts, control pressure of the first fluid or the second fluid discharging from the rotor, and allow a least a portion of the first fluid to contact the second end cover to thereby reduce or eliminate a dead volume inside of the rotor. The second fluid includes a flush volume that passes through the rotor ducts.

Abstract: A pressure exchanger includes a rotor including rotor ducts that extend parallel to each other. The pressure exchanger further includes a flow divider that has a substantially flat shape and is located in the rotor ducts, where the flow divider partitions an inner space of one of the rotor ducts into flow paths configured to communicate fluid. The flow divider defines an aspect ratio of each of the plurality of flow paths, where the aspect ratio is a ratio of a width of one of the flow paths in a radial direction with respect to an axial length of one of the flow paths in the axial direction.