Patent ID: 11212948

Abstract:
A thermal management system for tightly controlling temperature of a thermal load (e.g., onboard an aircraft) includes: a pressurized tank for storing an expendable coolant; a control valve downstream of the pressurized tank for controlling a flow rate of the expendable coolant; a heat exchanger downstream of the control valve for transferring heat from a thermal load to the expendable coolant at a predetermined temperature; a back pressure regulator (BPR) downstream of the heat exchanger, the BPR having a set point controlled to maintain the expendable coolant at the predetermined temperature in the heat exchanger; optionally, a sensor or orifice downstream of the heat exchanger for determining vapor quality at an exit of the heat exchanger; and a system exit downstream of the BPR for removing some or all of the expendable coolant from the thermal management system after transferring heat from the thermal load to the expendable coolant.