Patent ID: 11892217
Assignee: HILL PHOENIX, INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 12:
13. A method for controlling a refrigeration system that includes a refrigeration circuit, a cooling circuit, and a heat exchanger coupled to the refrigeration circuit and the cooling circuit, the method comprising:
identifying, by a controller for the refrigeration system, a temperature differential setpoint, wherein the temperature differential setpoint is a target value of a difference between an inlet temperature of a coolant provided to the heat exchanger by the cooling circuit and a condensing temperature of a refrigerant provided to the heat exchanger by the refrigeration circuit;
monitoring, by the controller, the inlet temperature of the coolant provided to the heat exchanger by the cooling circuit;
determining, by the controller, the condensing temperature of the refrigerant provided to the heat exchanger by the refrigeration circuit; and
operating, by the controller, a control valve of the cooling circuit to modulate a flow of the coolant through the heat exchanger to drive an actual temperature differential ΔT between the condensing temperature of the refrigerant provided to the heat exchanger and the inlet temperature of the coolant provided to the heat exchanger to the temperature differential setpoint,
wherein operating the control valve of the cooling circuit to modulate a flow of the coolant through the heat exchanger to drive the actual temperature differential ΔT between the condensing temperature of the refrigerant provided to the heat exchanger and the inlet temperature of the coolant provided to the heat exchanger to the temperature differential setpoint comprises:
at least partially opening the control valve to increase the flow of the coolant through the condenser when the actual temperature differential ΔT is higher than the temperature differential setpoint; and
at least partially closing the control valve to decrease the flow of the coolant through the condenser when the actual temperature differential ΔT is lower than the temperature differential setpoint.