Transcritical refrigeration pressure exchanger

Abstract

A pressure exchanger (PX) includes a rotor configured to receive a first fluid, receive a second fluid, and exchange pressure between the first fluid and the second fluid, where the rotor forms a plurality of ducts. The PX further includes a first end cover fluidly coupled with the rotor, the first end cover forming a first kidney, where a kidney angular extent of the first kidney is substantially an integer multiple of a duct angular spacing between at least two adjacent ducts of the plurality of ducts, where the kidney angular extent is an angular distance between an opening edge and a closing edge of the first kidney and the duct angular spacing is an angular distance between corresponding centers of the at least two adjacent ducts.

Dependencies are inferred from the claim text.