Patent ID: 11892208
Assignee: ROLLS-ROYCE NORTH AMERICAN TECHNOLOGIES, INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 13:
14. A cooling apparatus comprising:
a first fluid flowpath including the following elements, in downstream flow sequence:
a separator vessel;
a subcooler having a first side in fluid communication with the first fluid flowpath and a second side configured to be disposed in thermal communication with a cold sink;
a flow control valve;
a primary evaporator assembly including at least one primary evaporator configured to be disposed in thermal communication with a primary heat load;
a pressure regulator operable to maintain a refrigerant saturation pressure within the primary evaporator at a predetermined set point; and
a second fluid flowpath having a first end connected in fluid communication with the first fluid flowpath at a point downstream of the separator vessel, wherein the second fluid flowpath is configured to extract refrigerant from the first flowpath, pass the refrigerant through a flow restrictor and the second side of the subcooler, and return the refrigerant to the first fluid flowpath at a second end, wherein the flow restrictor is disposed upstream of the subcooler in the second fluid flowpath and configured to expand the portion of the cooling fluid from liquid to vapor.