97results about "Compression machines using turbines" patented technology

The cryogenic expansion turbine system (10) includes a turboexpander (12) configured to receive and expand a cryogenic gas supply stream (24). A rotating shaft (16) operatively connects the turboexpander to a compressor (14) or a resistance device, such as a braking device. A bearing housing (18) has a bearing cooling fluid inlet port and a bearing cooling fluid outlet port. Electromagnetic bearings (22) are disposed within the bearing housing and rotatably support the rotating shaft. A bearing cooling circuit (72) directs a flow of bearing cooling fluid (62) through the bearing cooling fluid inlet port and into the bearing housing, thereby cooling the electromagnetic bearings, and the resulting warmed bearing cooling fluid (68) exits the bearing housing through the cooling fluid outlet port.

The invention relates to a heat pump circuit (1) for providing usable heat at a temperature above 130°C. The invention further relates to a method for operating such a heat pump circuit (1).

The present invention relates to a refrigeration circuit (100), comprising: - at least one compressor device (110) which is designed to circulate a refrigerant in the refrigeration circuit (100); - at least one generator (120) for electrical energy, which is arranged downstream of the compressor device (110) in the refrigeration circuit (100) and is designed to be driven, in order to generate electrical energy, by the refrigerant compressed by the at least one compressor device (110); - at least one first expansion valve (130) which is arranged downstream of the at least one generator (120) in the refrigeration circuit (100) in order to expand the refrigerant after it flows through the at least one generator (120); and - at least one evaporator (140) which is arranged downstream of the at least one first expansion valve (130) in the refrigeration circuit (100) in order to evaporate the refrigerant after it flows through the at least one first expansion valve (130).

Disclosed herein is a leakage detection system of a reliquefaction system for ships. The leakage detection system includes: a gas supply line along which boil-off gas generated from a liquefied gas stored in a storage tank of a ship is supplied to a compressor; a reliquefaction line along which the boil-off gas compressed by the compressor is cooled and reliquefied through a heat exchanger and is returned to the storage tank; a refrigerant circulation line along which a refrigerant exchanging heat with the compressed boil-off gas in the heat exchanger is circulated; a refrigerant compressor disposed on the refrigerant circulation line to compress the refrigerant discharged from the heat exchanger after cooling the compressed boil-off gas; a refrigerant expander expanding and cooling the refrigerant compressed by the refrigerant compressor and having been cooled through the heat exchanger and supplying the cooled refrigerant back to the heat exchanger; and a refrigerant charge line connecting an inventory tank filled with nitrogen to an upstream side of the refrigerant compressor on the refrigerant circulation line, wherein, upon initial start-up or restart of a reliquefaction process, the nitrogen is supplied to the upstream side of the refrigerant compressor via the refrigerant charge line to detect leaks in the refrigerant circulation line.

To provide a method and an apparatus for cooling a surface on a flight vehicle and / or generating power.SOLUTION: Supercritical working fluid is circulated through a fluid loop that includes the steps of: compressing the supercritical working fluid by a compressor, heating the supercritical working fluid by a heat absorbing portion that is thermally coupled to a surface; expanding the supercritical working fluid in a thermal engine to generate work output; cooling the supercritical working fluid; and recirculating the supercritical working fluid to the compressor. The work output of the thermal engine is operably coupled to the compressor, and may optionally be coupled to a generator in order to generate power. The supercritical working fluid absorbs heat from the surface, eliminates hot spots and permits use of lighter and / or less expensive material.SELECTED DRAWING: None

A method of operating a refrigeration system is disclosed. The method comprises cooling a refrigerant using a first high side heat exchanger, and reducing the pressure of a first portion of the refrigerant received from the first high side heat exchanger using a first expansion valve in a first low side heat exchanger unit. The method further comprises cooling a first space with the refrigerant received from the first expansion valve using a first low side heat exchanger in the first low side heat exchanger unit, and reducing the pressure of a second portion of the refrigerant received from the high side heat exchange using an expander of an expansion-compression unit. The method further comprises compressing the refrigerant received from the first low side heat exchanger using a compressor of the expansion-compression unit.

A refrigeration system includes: a turbo machine including: a rotating shaft; a compressor impeller, a turbine wheel, and an electric motor attached to the rotating shaft; and a casing accommodating the rotating shaft, the compressor impeller, the turbine wheel, and the electric motor; a compressed fluid line for guiding a fluid compressed by the compressor impeller to the turbine wheel; a cooler provided in the compressed fluid line to perform heat exchange between the fluid flowing through the compressed fluid line and a cooling liquid; a cooling liquid circulation line provided with a cooling device for cooling the cooling liquid; and a cooling liquid introduction line for extracting the cooling liquid from the cooling liquid circulation line and introducing the cooling liquid into the casing.

A refrigeration cycle is connected to a supercritical carbon dioxide (sCO2) power cycle by incorporating a CO2 condenser which is also the refrigeration cycle evaporator. The heat rejected by the carbon dioxide is absorbed by the refrigerant in the CO2 condenser. Work is done on the refrigerant to raise its temperature above the local ambient temperature. The heat absorbed from the power cycle and the work required to raise the refrigerant temperature is rejected to the ambient environment, which may be either air, earth, or water. This results in improved efficiencies in carbon dioxide power cycles without regard to the ambient temperature by forcing a transcritical phase change even when ambient temperatures are above the carbon dioxide critical point. A two-phase heat transfer on both sides of the CO2 condenser further improves efficiency of the sCO2 power cycle.

The invention relates to a cooling circuit for a gas-fed cooling system in a floating structure with a tank, the cooling circuit comprising a main loop through which a coolant flows, the main loop comprising: a compression device, a heat exchanger, an internal heat exchanger, and a turbo compressor (13), the cooling circuit comprising a regulating branch connected to the main loop, the regulating branch comprising a valve configured to control the flow of coolant in the regulating branch, the main loop comprising a pressure sensor, the valve controlling the amount of coolant present in the main loop based on the pressure measured by the pressure sensor.

A method is provided. The method comprises: identifying, by a processing device, first temperature data indicative of a temperature difference between a bulk fluid at a first inlet of a heat exchanger and the bulk fluid at a first outlet of the heat exchanger, fluidly coupled to the first inlet by one or more fluid channels of the heat exchanger, wherein the first outlet of the heat exchanger is fluidly coupled to a high-pressure inlet of a pressure exchanger (PX); determining, based on the first temperature data, a target adjustment of a first valve fluidly coupled to the first outlet of the heat exchanger and to a secondary fluid inlet of the heat exchanger; and causing, based on the target adjustment, actuation of the first valve.

A system includes a pressure exchanger (PX) configured to receive a first fluid at a first pressure, receive a second fluid at a second pressure, and exchange pressure between the first fluid and the second fluid. The first fluid is to exit the PX at a third pressure and the second fluid is to exit the PX at a fourth pressure. The system further includes a condenser configured to receive the first fluid from a compressor and provide corresponding thermal energy from the first fluid to a first environment. The system further includes a heat exchanger configured to receive the first fluid output from the condenser.

A refrigeration system (1) comprising a compressor (2), a condenser (3), an lamination member (4), an evaporator (5), and a fluid power machine (6) fluidically connected between the lamination member (4) and the evaporator (5), in which a working fluid circulates in a closed circuit. The fluid power machine (6) comprises a motor chamber, a motor member movably housed in the motor chamber, an inlet for the injection of working fluid into the motor chamber to move the motor member, and an outlet for the discharge of working fluid from the motor chamber.

A refrigeration device according to an embodiment includes a compressor 11, a compressor downstream-side heat exchanger 12, an expander 21, and an expander downstream-side heat exchanger 22. The compressor 11 and the expander 21 are coupled to each other by a common drive shaft 18A. The compressor downstream-side heat exchanger 12 cools the natural refrigerant flowing out of the compressor 11, and the expander downstream-side heat exchanger 22 exchanges heat between the natural refrigerant flowing out of the expander 21 and a temperature control target. The compressor downstream-side heat exchanger 12 and the expander downstream-side heat exchanger 22 are then arranged to be aligned in a direction parallel to an axial direction Ax of the drive shaft 18A.

A system is provided. The system (300A) comprises a pressure exchanger (310), PX, coupled to a motor (381), wherein the motor is configured to control an operating speed of the PX (310); a condenser (329), wherein an outlet of the condenser is fluidly coupled to a first inlet of the PX (310); a first pressure gauge (380) configured to provide first pressure data indicative of a pressure of a fluid of the condenser (329); and a first controller (390) configured to cause, based on the first pressure data, the motor (381) to adjust the operating speed of the PX (310).

A system for suppressing the generation of and removing impurities in a helium refrigerator according to the present invention comprises: a helium gas supply line for supplying helium to a helium compressor; a compressed oil circulation line for circulating and supplying compressed oil required to compress helium in the helium compressor; a helium circulation line that circulates the helium, supplied via the helium gas supply line, to compress the helium in the helium compressor together with the compressed oil supplied via the compressed oil circulation line, and then collect and use same; and a cooling water circulation line of a compressed oil storage device, wherein the cooling water circulation line is for preventing the compressed oil from becoming high in temperature due to heat generated when the helium and the compressed oil are compressed together in the helium compressor. The system includes a first controller signally connected to a first temperature detection sensor for measuring the temperature of the rear end of the helium compressor from the rear end of the helium circulation line, and controls the opening amount of a first control valve, installed at the front end of the compressed oil storage device of the compressed oil circulation line, to control the flow rate of compressed oil supplied to the helium compressor, and thereby control the temperature at the rear end of the helium compressor.

A system includes a direct air capture (DAC) system, including one or more gas capture systems configured to capture an undesirable gas from air. The system further includes a thermodynamic cycle including a fluid circuit having at least one compressor, at least one recuperator, at least one turbine, at least one first heat exchanger, and at least one second heat exchanger. The fluid circuit is configured to circulate a working fluid, the at least one first heat exchanger is configured to transfer heat from a heat source to the working fluid, and the at least one second heat exchanger is configured to transfer heat from the working fluid to the one or more gas capture systems.

An energy utilization system includes a circulation circuit. The circulation circuit includes a pump, a heating section, an electrolytic reduction apparatus, and a thermal energy recovery section. The pump receives a heating medium and outputs the heating medium. The heating section heats the heating medium by using renewable energy or energy obtained from waste heat. The electrolytic reduction apparatus heats an electrolytic solution with heat from the heating medium. The circulation circuit circulates the heating medium. A method for producing a carbon-containing material includes heating a heating medium circulating in a circulation circuit by using renewable energy or energy obtained from waste heat, and performing electrolytic reduction by heating an electrolytic solution with heat from the heating medium that has been heated.

A fluid handling system is provided. The system comprises a pressure exchanger (PX) configured to receive a first fluid at a first pressure via a first inlet of the PX, receive a second fluid at a second pressure via a second inlet of the PX, and exchange pressure between the first fluid and the second fluid, wherein the first fluid is to exit the PX at a third pressure via a first outlet of the PX, and wherein the second fluid is to exit the PX at a fourth pressure via a second outlet of the PX; and a first condenser configured to receive the first fluid from a compressor and provide corresponding thermal energy from the first fluid to a first environment. The system further comprises a second condenser configured to receive the second fluid from the PX via the second outlet and provide corresponding thermal energy from the second fluid to a second environment; and a first heat exchanger configured to receive the first fluid output from the first condenser and further configured to receive the second fluid output from the second condenser. The first heat exchanger is configured to provide corresponding thermal energy from the first fluid to the second fluid and provide the first fluid to the PX via the first inlet.

Disclosed is a cryogenic refrigeration device comprising a working circuit (10) forming a loop and containing a working fluid, the working circuit (10) forming a cycle comprising, in series: a compression mechanism (2, 3); cooling means (4, 5, 6); an expansion mechanism (7); and heating means (6, 8), the device (1) further comprising a refrigeration heat exchanger (8) for extracting heat from at least one component (125) by heat exchange with a working fluid flowing in the working circuit (10), the compression means (2, 3) comprising two separate compressors (2, 3), the means (4, 5, 6) for cooling the working fluid comprise two cooling heat exchangers (4, 5) which are respectively arranged at the outlets of the two compressors (2, 3) and ensure the heat exchange between the working fluid and the cooling fluid, each cooling heat exchanger (4, 5) comprising a cooling fluid inlet (24, 25) and a cooling fluid outlet (34, 35), characterized in that the means (4, 5, 6) for cooling the working fluid comprise two cooling heat exchangers (4, 5) which are respectively arranged at the outlets of the two compressors (2, 3) and which ensure the heat exchange between the working fluid and the cooling fluid. The cooling fluid outlet (34, 35) of one of the two cooling heat exchangers (4, 5) is connected to the cooling fluid inlet (25, 24) of the other cooling heat exchanger (5).

A fluid handling system includes a pressure exchanger (PX) configured to receive a first fluid at a first pressure and a second fluid at a second pressure and exchange pressure between the first fluid and the second fluid. The system further includes a condenser configured to provide corresponding thermal energy from the first fluid to a corresponding environment. The system further includes a receiver to receive the first fluid output by the PX. The receiver forms a chamber to separate the first fluid into a first gas and a first liquid. The system further includes a first booster to increase pressure of a portion of the first gas to form the second fluid at the second pressure and provide the second fluid at the second pressure to the PX.

The invention relates to a cyclic thermodynamic process system (20) comprising a first heat exchanger (21), a pressure-increasing device (23), a second heat exchanger (24), and a pressure-reducing device (26, 37). The first heat exchanger (21) is designed to heat a process medium, said process medium thereby absorbing thermal energy; the pressure-increasing device (23) is designed to increase the pressure of the process medium downstream of the first heat exchanger (21) and upstream of the second heat exchanger (24); the second heat exchanger (24) is designed to cool the process medium, said process medium thereby dissipating thermal energy; and the pressure-reducing device (26, 37) is designed to reduce the pressure of the process medium downstream of the second heat exchanger (24) and upstream of the first heat exchanger (21). The pressure-increasing device (23) is part of a hermetically sealed turbomachine assembly (27), said hermetically sealed turbomachine assembly (27) having an electric machine (28), and process medium which serves to cool the turbomachine assembly (27) can be branched off downstream of the second heat exchanger (24).

A gas refrigerating machine comprising: an input for a gas to be cooled; a recuperator comprising a first recuperator output; a compressor comprising a compressor input, the compressor input being coupled to the first recuperator output; a heat exchanger; a turbine; a gas output; and a housing, wherein the housing comprises a wall, wherein the input for the gas to be cooled is located in the wall, wherein the gas output is located in the wall, and wherein the recuperator, the compressor, the turbine and the heat exchanger are arranged in the housing.

A method is provided. The method comprises: identifying, by a processing device, first temperature data indicative of a temperature difference between a bulk fluid at a first inlet of a heat exchanger and the bulk fluid at a first outlet of the heat exchanger, fluidly coupled to the first inlet by one or more fluid channels of the heat exchanger, wherein the first outlet of the heat exchanger is fluidly coupled to a high-pressure inlet of a pressure exchanger (PX); determining, based on the first temperature data, a target adjustment of a first valve fluidly coupled to the first outlet of the heat exchanger and to a secondary fluid inlet of the heat exchanger; and causing, based on the target adjustment, actuation of the first valve.

A cold storage (1) comprising a compartment (2), a first evaporator chamber in fluid communication with the compartment, a second evaporator chamber in fluid communication with the compartment, a first cooling system and a second cooling system, each cooling system comprising a compressor unit, a condenser structure, a first evaporator, a second evaporator, and a controller configured to control flow of refrigerant from the condenser structure to one or both of the first and second evaporators. To allow full operation with one of the two cooling systems and thereby preserve the other cooling system as a spare system, the first evaporators are arranged in the first evaporator chamber, and the second evaporators are arranged in the second evaporator chamber, allowing both chambers to be operated with each of the two cooling systems.

A thermal circulation system includes a working fluid that circulates in a loop comprising a compressor (10), a condenser (11a, 11b), an expander unit (130), and an evaporator (14). The expander unit (130) is configured to generate rotary mechanical motion. The expander unit (130) is connected between the outlet of the condenser (11a, 11b) and the inlet of the evaporator (14). The pressure drop of the working fluid through the condenser is less than about 5 bar.

The present disclosure relates to a refrigeration cycle (100), comprising: - at least one compressor device (110) configured to circulate a refrigerant in the refrigeration circuit (100); - at least one generator (120) for electrical energy, which is arranged downstream of the compressor device (110) in the refrigeration circuit (100) and is designed to be driven by the refrigerant compressed by the at least one compressor device (110) in order to generate electrical energy; - at least one first expansion valve (130) arranged downstream of the at least one generator (120) in the refrigeration circuit (100) to expand the refrigerant after it has passed through the at least one generator (120); and - at least one evaporator (140) arranged downstream of the at least one first expansion valve (130) in the refrigeration circuit (100) to evaporate the refrigerant after it has passed through the at least one first expansion valve (130).

The superconducting machine includes a vacuum vessel, at least one superconducting coil disposed within the vacuum vessel, and a cooling system for cooling the at least one superconducting coil. The cooling system includes a torque transmission component fixed to an inner wall of the vacuum vessel, and the at least one superconducting coil is fixed to the torque transmission component. The cooling system also includes a cryocooler outside the vacuum vessel, the cryocooler including a forced-flow cooling system. The cooling system also includes at least two cooling pipes for supplying and recovering a cryogen, the at least two cooling pipes being thermally coupled between the cryocooler and the at least one superconducting coil. By operating the cooling system, the cryocooler supplies a cryogen to the at least one superconducting coil via the at least two cooling pipes.

The dual-rail heat pump cycle includes a low-temperature heat source, a two-stage high-temperature heat exchange process through which heat is exchanged with a heat transfer medium during operation, and a working fluid circuit. The working fluid circuit includes an expansion process, a compression process, a recuperation process, and a pair of parallel flow paths. The recuperation process is interposed between the expansion and compression processes and has a high-pressure side defined by the compression process and a low-pressure side defined by the expansion process. There is a pair of parallel flow paths between the recuperator process and a high temperature heat exchange process on the high pressure side of the recuperator process.

A cryogenic refrigeration device arranged in a frame and comprising a working circuit forming a loop, filled with a working fluid and forming a cycle comprising a compression mechanism, a cooling mechanism, an expansion mechanism and a heating mechanism connected in series wherein the cooling and heating mechanisms comprise a common heat exchanger, the working fluid flows in opposite directions in a common heat exchanger in two separate passage portions of the working circuit, the device further comprising a refrigeration heat exchanger that extracts heat from at least one component by heat exchange with the working fluid, the compression mechanism comprising two separate compressors, the cooling mechanism comprises two cooling heat exchangers respectively arranged at the outlets of the two compressors and ensuring heat exchange between the working fluid and the cooling fluid, the frame extends in the longitudinal direction and comprises a lower base mounted on the support, and the cooling heat exchangers surround the common heat exchanger in the frame.