Systems and methods of continuous cooling at cryogenic temperatures. One exemplary aspect involves a refrigeration system that includes: a chamber adapted to hold liquid and gaseous coolant received from a cooling pot; a first adsorption pump having an inlet end in fluid communication with the chamber, the first adsorption pump configured to capture gas from the liquid and gaseous coolant when the first adsorption pump is enabled; a second adsorption pump having an inlet end in fluid communication with the chamber, the second adsorption pump configured to capture gas from the liquid and gaseous coolant when the second adsorption pump is enabled; a means for desorbing the gas captured by the first adsorption pump; and a means for desorbing the gas captured by the second adsorption pump.

A refrigeration cycle apparatus includes low-pressure side pressure detecting means for detecting the pressure of a refrigerant being sucked by a compressor, suction refrigerant temperature detecting means for detecting the temperature of the refrigerant being sucked by the compressor, frequency detecting means for detecting the operation frequency of the compressor, cooling target fluid inflow temperature detecting means for detecting the temperature of a cooling target fluid flowing in an evaporator, cooling target fluid outflow temperature detecting means for detecting the temperature of the cooling target fluid flowing out of the evaporator, and flow rate calculating means (measuring unit, computing unit, and storage unit) for calculating the absolute quantity of the flow rate of the cooling target fluid flowing in the evaporator using a value detected by each detecting means.

In an air-conditioning apparatus including a refrigerant circulating circuit A and a heat medium circulating circuit B that performs passing of heat to and from the refrigerant circulating circuit A, the heat medium circulating circuit is a closed circuit, the maximum pump head Pp of a pump of the heat medium circulating circuit is 150 kPa or more, and a pressure near at least a suction side of the pump is set to a charged pressure that is maintained equal to or higher than the atmospheric pressure during operation of the pump.

A thermoelectric arrangement for use in a cooling system (4, 6) of a motor vehicle has a thermocouple (8) with a first, heat-outputting thermal element (10), a second, heat-absorbing thermal element (12) and a conductor element (14) through which current flows. At least two cooling circuits (16, 18, 20) are provided. The first thermal element (10) is arranged in at least one cooling circuit (16, 18, 20), and the second thermal element (12) is arranged in at least one heating circuit (48). The first thermal element (10) is arranged in a first connecting line (22) that is connected fluidically to the respective cooling circuits (16, 18, 20) via valve arrangements (24, 26; 28, 30; 32, 34) on the input and output sides of the first thermal element (10). A cooling system having such a thermoelectric arrangement also is described.

A heat pump includes an evaporator with an evaporator inlet and an evaporator outlet; a compressor for compressing operating liquid evaporated in the evaporator; and a condenser for condensing evaporated operating liquid compressed in the compressor, wherein the condenser includes a condenser inlet and a condenser outlet, wherein the evaporator inlet is connected to a return from a region to be heated, and wherein the condenser inlet is connected to a return from a region to be cooled.

A thermal energy storage system of a vehicle is disclosed. The thermal energy storage system includes a refrigerant circuit conveying a refrigerant therethrough. The refrigerant circuit includes an evaporator receives a flow of the refrigerant and a flow of air. The thermal energy storage system also includes a coolant circuit conveying a coolant therethrough. The coolant circuit includes a coolant heat exchanger disposed downstream from the evaporator with respect to a direction of the flow of air through the evaporator and an auxiliary heat exchanger receiving a flow of the coolant. The thermal energy storage system further includes a cold storage device in thermal communication with the coolant circuit and a WCAC in fluid communication with the auxiliary heat exchanger.

A thermal energy storage system of a vehicle is disclosed. The thermal energy storage system includes a refrigerant circuit conveying a refrigerant therethrough. The refrigerant circuit includes an evaporator receives a flow of the refrigerant and a flow of air. The thermal energy storage system also includes a coolant circuit conveying a coolant therethrough. The coolant circuit includes a coolant heat exchanger disposed downstream from the evaporator with respect to a direction of the flow of air through the evaporator and an auxiliary heat exchanger receiving a flow of the coolant. The thermal energy storage system further includes a cold storage device in thermal communication with the coolant circuit and a WCAC in fluid communication with the auxiliary heat exchanger.

A refrigeration system includes a refrigeration circuit and a coolant circuit separate from the refrigeration circuit. The refrigerant circuit includes a gas cooler/condenser, a receiver, and an evaporator. The coolant circuit includes a heat exchanger configured to transfer heat from a refrigerant circulating within the refrigeration circuit into a coolant circulating within the coolant circuit, a heat sink configured to remove heat from the coolant circulating within the coolant circuit, and a magnetocaloric conditioning unit configured to transfer heat from the coolant within a first fluid conduit of the coolant circuit into the coolant within a second fluid conduit of the coolant circuit. The first fluid conduit connects an outlet of the heat exchanger to an inlet of the heat sink, whereas the second fluid conduit connects an outlet of the heat sink to an inlet of the heat exchanger.

A refrigeration system includes a refrigeration circuit and a coolant circuit separate from the refrigeration circuit. The refrigerant circuit includes a gas cooler/condenser, a receiver, and an evaporator. The coolant circuit includes a heat exchanger configured to transfer heat from a refrigerant circulating within the refrigeration circuit into a coolant circulating within the coolant circuit, a heat sink configured to remove heat from the coolant circulating within the coolant circuit, and a magnetocaloric conditioning unit configured to transfer heat from the coolant within a first fluid conduit of the coolant circuit into the coolant within a second fluid conduit of the coolant circuit. The first fluid conduit connects an outlet of the heat exchanger to an inlet of the heat sink, whereas the second fluid conduit connects an outlet of the heat sink to an inlet of the heat exchanger.

A system for vibration control of a cryocooler that cools an imager. The system includes a vibration sensor that is physically affixed to the cryocooler. The vibration sensor senses a physical vibration of the cryocooler and to generates a vibration signal therefrom. The system also includes cryocooler drive electronics operatively coupled to the vibration sensor and the cryocooler. The cryocooler drive electronics output a drive waveform that drives the cryocooler so as to reduce the vibration impact of the cryocooler. The harmonic content of the cryocooler drive waveform is controlled by the cryocooler drive electronics based on the vibration signal.