Patent ID: 11959669
Assignee: ROLLS-ROYCE NORTH AMERICAN TECHNOLOGIES, INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 13:
14. A method of cooling a heat load, the method comprising:
directing a cooling fluid through a two-phase pumped loop (TPPL) in a TPPL mode due to a TPPL check valve being open and a compressor check valve being closed, the two-phase pumped loop including
a receiver,
a heat load downstream from the receiver,
a mixer downstream from the heat load and upstream of the receiver,
the TPPL check valve downstream from the heat load, and
a heat exchanger downstream from the TPPL check valve and upstream from the receiver;

directing the cooling fluid through a vapor cycle system (VCS) loop in VCS mode due to the TPPL check valve being closed and the compressor check valve being open, the vapor cycle system loop including
the receiver,
a compressor downstream from a vapor outlet of the receiver,
the compressor check valve downstream from the compressor and upstream of the heat exchanger,
the heat exchanger, and
the mixer downstream from the heat exchanger and upstream from receiver, an output of the heat load in fluid communication with a first inlet of the mixer and an output of the heat exchanger in fluid communication with a second inlet of the mixer,

wherein the heat load, which is in the TPPL, is in the VCS loop downstream from a liquid outlet of the receiver; and
closing the TPPL check valve if a discharge pressure of the compressor is higher than a pressure of the two-phase pumped loop upstream of the TPPL check valve when the cooling capacity of the TPPL is insufficient to cool the heat load.