Abstract: A thermal management system includes a refrigerant receiver configured to store a refrigerant fluid, a closed-circuit refrigeration system having a closed-circuit fluid path with the refrigerant receiver, and with the closed-circuit refrigeration system configured to receive refrigerant from the refrigerant receiver through the closed-circuit fluid path, an open-circuit refrigeration system having an open-circuit fluid path, and with the refrigerant receiver disposed in the open-circuit fluid path, with the open-circuit refrigeration system configured to receive refrigerant through the open-circuit fluid path, and discharge refrigerant fluid through an exhaust line, and an evaporator arrangement configured to receive the refrigerant and to extract heat from at least one heat load, the evaporator arrangement having an inlet and an outlet, with the evaporator disposed in a common portion of the closed-circuit fluid path and the open-circuit fluid path.

Abstract: A thermal management system includes a receiver configured to store a refrigerant fluid; a refrigeration system having a refrigerant fluid path that includes the receiver, and at least one evaporator disposed in the refrigerant fluid path. The refrigeration system is configured to receive the refrigerant fluid from the receiver through the refrigerant fluid path. The at least one evaporator is configured to receive the refrigerant fluid and to extract heat from at least one heat load having a specified thermal inertia that is in at least one of thermal conductive or convective contact with the at least one evaporator.

Abstract: A thermal management system includes a refrigerant receiver configured to store a refrigerant fluid, an evaporator arrangement that removes heat from a heat load converting a portion of the refrigerant fluid to refrigerant vapor and a liquid separator having an inlet, a liquid side outlet, and a vapor side outlet. The system also includes a pump that pumps refrigerant liquid received from the liquid side outlet of the liquid separator and a closed-circuit refrigeration system having a closed-circuit fluid path that includes the refrigerant receiver, the liquid separator, the pump, and the evaporator arrangement, the closed-circuit refrigeration system further including a compressor and a condenser.

Abstract: An evaporator includes a cold plate configured to extract heat from one or more heat loads in proximity to the evaporator. The cold plate includes a housing, and a plurality of channels disposed through the housing, with at least one of the plurality of channels being a meandered channel.

Abstract: A thermal management system includes a refrigerant receiver having a refrigerant receiver outlet and a refrigerant receiver inlet, with the refrigerant receiver configured to store a refrigerant fluid, an ejector having a primary flow inlet coupled to receive the refrigerant fluid from the receiver, a secondary flow inlet and an outlet.

Abstract: A heat transfer apparatus includes a plurality of “n” number of control valves, each of the plurality of “n” number of control valves including a control valve inlet and a control valve outlet; a like plurality of “n” number of evaporator sections, each of the like plurality of “n” number of evaporator sections including an evaporator section inlet and an evaporator section outlet, each evaporator section inlet fluidly coupled to a corresponding one of the plurality of “n” number of control valve outlets, each evaporator section configured to extract heat from at least one heat load that is in thermal conductive or convective contact or proximate to the evaporator section; a refrigerant fluid inlet fluidly coupled to the like plurality of evaporator sections; and a refrigerant fluid outlet fluidly coupled to the like plurality of evaporator sections.

Abstract: A thermal management system includes a receiver configured to store a refrigerant fluid; a refrigeration system having a refrigerant fluid path that includes the receiver, and at least one evaporator disposed in the refrigerant fluid path. The refrigeration system is configured to receive the refrigerant fluid from the receiver through the refrigerant fluid path. The at least one evaporator is configured to receive the refrigerant fluid and to extract heat from at least one heat load having a specified thermal inertia that is in at least one of thermal conductive or convective contact with the at least one evaporator.

Abstract: A thermal management system includes a closed-circuit refrigerant system to circulate a refrigerant fluid. The system includes a compressor to compress a flow of the refrigerant fluid. The system includes a condenser coupled to the compressor. The system includes a receiver to store at least a portion of the refrigerant fluid. The receiver is coupled to the condenser. The system includes a pump to circulate the refrigerant fluid through at least a portion of the system. The pump is coupled to the receiver. The system includes a flow control device to control the flow of the refrigerant fluid to an evaporator. The flow control device is coupled to the pump. The evaporator extracts heat from at least one heat load that is in thermal conductive or convective contact with the evaporator.