Control of refrigeration and heat pump systems that include pressure exchangers

A non-transitory machine-readable storage medium storing instructions which, when executed, cause a processor to perform operations comprising:

• identifying first pressure data indicative of a fluid pressure of a fluid of a condenser of a heat transfer system;
• generating a first control signal based on at least the first pressure data;
• and
• causing, based on the first control signal, a motor to adjust a speed of operation of a pressure exchanger (PX).

A system comprising:

• memory;
• and
• a processor coupled to the memory, wherein the processor is configured to:
• identify first pressure data indicative of a fluid pressure of a fluid of a condenser of a heat transfer system;
• generate a first control signal based on at least the first pressure data;
• and
• cause, based on the first control signal, a motor to adjust a speed of operation of a pressure exchanger (PX).