Abstract: A heat pump for heating a vehicle interior includes a compressor arranged in a heat-pump circuit of a working medium, a condenser, a throttle valve and an evaporator. Gaseous working medium is compressed in the compressor. The compressor outlet is connected to the inlet of the condenser in which the working medium condenses, at the same time discharging heat, the heat being delivered as useful heat directly or indirectly to a consumer. The condenser is followed by a jet pump, to which the liquid working medium coming from the condenser is delivered as driving medium and to which the gaseous working medium flowing out from the evaporator is delivered as suction medium, in such a way that the driving medium and suction medium are compressed in the jet pump as a two-phase mixture. The jet-pump outlet is connected to the inlet of a separator, to which the two-phase mixture is delivered and in which the gaseous working medium is separated from the liquid working medium.

Abstract: An ejector includes a body member having a depressurizing space that depressurizes a refrigerant which flows out of a swirling space that swirls the refrigerant, a suction passage that draws the refrigerant from an external, and a pressurizing space that mixes a refrigerant jetted from the depressurizing space with a refrigerant drawn from the suction passage and pressurizes the mixed refrigerant, and a conical passage formation member arranged in the depressurizing space and in the pressurizing space. A nozzle passage is formed of a refrigerant passage between an inner peripheral surface of the depressurizing space and an outer peripheral surface of the passage formation member, and a diffuser passage is formed of a refrigerant passage between an inner peripheral surface of a portion that defines the pressurizing space and an outer peripheral surface of the passage formation member.

Abstract: An ejector includes a swirl flow channel that is arranged on an upstream side of a nozzle portion. The swirl flow channel swirls the high pressure refrigerant and allows the refrigerant in a state of a gas-liquid mixed phase to flow into the nozzle portion. The ejector further includes a flow-rate changeable mechanism that is disposed at the upstream side of the swirl flow channel, and is capable of changing a flow rate of the high pressure refrigerant that flows into the swirl flow channel. Accordingly, a nozzle efficiency can be improved, and an operation according to a load of the refrigeration cycle is possible.

Abstract: Disclosed is a heat exchanger of a plate type comprising an evaporator having at least one inlet and at least one outlet allowing a first medium to enter into and exit from the evaporator. The evaporator comprises a plurality of interconnected evaporation chambers disposed in parallel, having at least one common inlet and at least one common outlet allowing the first medium to enter into and exit from the evaporation chambers.

Abstract: An integrated power and refrigeration system is disclosed that includes a first subsystem configured to provide cooling air using a reverse-Brayton cycle using compressed air and a second subsystem configured to provide power by accepting a first portion of the compressed air from the first subsystem, heating the accepted first portion of the compressed air to form hot compressed air, and using the hot compressed air to drive a turbine that is coupled to a power generator.

Abstract: A coaxial economizer for use in a chiller system comprising an inner housing and an outer housing having a common longitudinal axis. The outer housing has an inlet for receiving a fluid from a upstream compressor stage of a multistage compressor and an outlet for conveying a fluid to a downstream compressor stage of a multistage compressor. A flow chamber forms a fluid flow path about the inner housing. A flash chamber is coterminous with the flow chamber and flashes fluid in a liquid state to a gas state. A flow passage between said flash chamber and the flow chamber for conveying a flashed gas from the flash chamber to the flow chamber; wherein the flashed gas conveyed from the flash chamber and the fluid received from the inlet of the outer housing mix along the fluid flow path toward the outlet of the outer housing.

Abstract: An ejector-type refrigeration cycle device is provided with a first ejector (15) which draws refrigerant from a refrigerant suction port (15b, 24b) by using a high-speed refrigerant flow jetted from a nozzle part (15a, 24a), and a first suction-side evaporator (19) connected to the refrigerant suction port (15b) of the first ejector (15), and a second suction-side evaporator (27) connected to a refrigerant suction port (24b) of a second ejector (24). A flow amount of the refrigerant in the second ejector (24) is smaller than a flow amount of the refrigerant in the first ejector (15). The refrigerant branched at a branch part (Z2) that is positioned on a downstream refrigerant side of a radiator (13) and on an upstream refrigerant side of the first ejector (15) flows into the second ejector (24), and the refrigerant branched on a downstream refrigerant side of the second ejector (24) flows into the second suction-side evaporator (27).

Abstract: A heat exchanger may be associated with a heat transfer system to promote flow of heat energy from a heat source to a multi-phase fluid. The heat exchanger may be associated with an expansion portion. The fluid may be a refrigerant to which nano-particles may be added. Embodiments of the present invention may be implemented in an air-conditioning system as well as a water heating system.

Abstract: Disclosed herein is a cooling system that utilizes a supersonic cooling cycle. The cooling system includes accelerating a compressible working fluid, and may not require the use of a conventional mechanical pump. The cooling system accelerates the fluid to a velocity equal to or greater than the speed of sound in the compressible fluid selected to be used in the system. A phase change of the fluid due at least in part to a pressure differential cools a working fluid that may be utilized to transfer heat from a heat intensive system.

Abstract: A refrigerating cycle unit includes an ejector and a heat exchanger defined by layering a plurality of plates. Each of the plates has a refrigerant passage, and the refrigerant passages are connected by a header tank in a layering direction of the plates. At least two of the plates are fix plates having a fix portion to fix the ejector, and a communication portion through which the ejector and the header tank communicate with each other. The ejector is arranged between the fix portions of the fix plates in the layering direction, so as to be integrated with the heat exchanger.

Abstract: A flow of refrigerant discharged from a first compressor and cooled by a radiator is branched by a first branch portion, and the branched refrigerant of one side is decompressed and expanded by a thermal expansion valve and is heat exchanged with the branched refrigerant of the other side in an inner heat exchanger. Therefore, the branched refrigerant of the other side supplied to the suction side evaporator and a nozzle portion of an ejector can be cooled, thereby improving COP. Furthermore, a suction port of a second compressor is coupled to an outlet side of the ejector so as to secure a drive flow of the ejector, and the refrigerant discharged from the second compressor and the refrigerant downstream of the thermal expansion valve are mixed to be drawn into the first compressor so that an ejector-type refrigerant cycle device can be operated stably.

Abstract: A heat pumping unit includes a first heat exchanger, a second heat exchanger and a pump. An outlet of the first heat exchanger is connected to a vapor inlet of a liquid jet-ejector. A liquid outlet of the ejector is connected to an inlet of the second heat exchanger. An outlet of the second heat exchanger is connected at the same time to an inlet of the pump and through a pressure reducing device to an inlet of the first heat exchanger. The pump outlet is connected to the liquid-jet ejector liquid inlet.

Abstract: A system has first and second compressors (22, 180), a heat rejection heat exchanger (30), an ejector (38), a heat absorption heat exchanger (64), and a separator (48). The heat rejection heat exchanger (30) is coupled to the compressor to receive refrigerant compressed by the compressor. The ejector (38) has a primary inlet (40) coupled to the heat rejection exchanger (30) to receive refrigerant, a secondary inlet (42), and an outlet (44). The separator (48) has an inlet coupled to the outlet of the ejector to receive refrigerant from the ejector. The separator has a gas outlet (54) coupled to the compressor (22) to return refrigerant to the first compressor. The separator has a liquid outlet (52) coupled to the secondary inlet of the ejector to deliver refrigerant to the ejector (38). The heat absorption heat exchanger (64) is coupled to the liquid outlet of the separator to receive refrigerant. The second compressor (180) is between the separator and the ejector secondary inlet.

Abstract: A turbo compressor is provided with a first compression stage that draws in and compresses a fluid, and a second compression stage connected to the first compression stage via a rotation shaft, that further compresses the compressed fluid from the first compression stage. The first compression stage and the second compression stage are arranged adjacent to each other with their backsides facing each other. A discharge port of the first compression stage, and a suction port of the second compression stage are formed in the same plane, and there is provided a U-shaped pipe that connects the first discharge port and the second suction port.

Abstract: To obtain a refrigerating cycle apparatus that reduces a pressure loss at the time of a normal operation in which an ejector is bypassed to improve refrigeration cycle performance. A second throttle apparatus is installed on piping path between the outlet of a condenser, which is a radiator, and the outlet of a first throttle device. A check valve is installed on piping path between a gas refrigerant suction section of the ejector and the outlet of the ejector.

Abstract: An ejector (200; 300; 400; 600) has a primary inlet (40), a secondary inlet (42), and an outlet (44). A primary flowpath extends from the primary inlet to the outlet. A secondary flowpath extends from the secondary inlet to the outlet. A mixer convergent section (114) is downstream of the secondary inlet. A motive nozzle (100) surrounds the primary flowpath upstream of a junction with the secondary flowpath. The motive nozzle has an exit (110). The mixer has a downstream divergent section down-stream of the convergent section and having a divergence half angle of 0.1-2.0 over a first span of at least 3.0 times a minimum diameter of the mixer.

Abstract: A refrigeration cycle is operated in conjunction with various thermodynamic cycle working fluid circuits to cool a target fluid that may be used in a separate system or duty. In one embodiment, the refrigeration cycle includes an ejector that extracts a motive fluid from the working fluid cycles in order to entrain a suction fluid that is also extracted from the working fluid circuits. Expanding the suction fluid reduces the pressure and temperature of the suction fluid for cooling the target fluid in an evaporator, which evaporates the suction fluid before being entrained into the ejector by the motive fluid. A mixed fluid is discharged from the ejector and injected into the working fluid circuits upstream from a condenser that cools the mixed fluid and the working fluid circulating throughout the working fluid circuits.

Abstract: The present invention relates to an air conditioner using hot water heated by a solar heating system, the air conditioner comprising: a heater 10 that has a vacuous interior and a plurality of hot water branch pipes 13 immersed in the refrigerant; a condenser 30 connected with the heater 10 through a steam pipe L1; an ejector 20 mounted to the steam pipe L1; a flow regulator 40 installed on the exit side of the condenser 30; a refrigerant return line L2 connected to the flow regulator 40 to return the refrigerant to the heater 10; an evaporator 50 connected to the flow regulator 40 to receive condensate; a first steam supply line L4 connected with the evaporator 50 to supply the evaporated refrigerant to the ejector 20; and a second steam supply line L5 that is branched from the first steam supply line L4 and then connected with the steam pipe L1 and has a vacuum pump P2 installed therein.

Abstract: An ejector (200; 300; 400) has a primary inlet (40), a secondary inlet (42), and an outlet (44). A primary flowpath extends from the primary inlet to the outlet. A secondary flowpath extends from the secondary inlet to the outlet. A mixer convergent section (114) is downstream of the secondary inlet. A motive nozzle (100) surrounds the primary flowpath upstream of a junction with the secondary flowpath to pass a motive flow. The motive nozzle has an exit (110). The ejector has surfaces (258, 260) positioned to introduce swirl to the motive flow.

Abstract: A heat exchanger includes a heat exchanging section for performing heat exchange between a refrigerant and a cooling medium and a passage section. The passage section includes a first passage and a second passage for supplying the refrigerant to the heat exchanging section and a supply passage for supplying the refrigerant to the first passage and the second passage. The first passage and the second passage define a first opening portion and a second opening portion opening at an end of the supply passage. A minimum distance between an opening edge of the first opening portion and an inner surface of the supply passage is equal to a minimum distance between an opening edge of the second opening portion and the inner surface of the supply passage.

Abstract: An ejector-type refrigerant cycle device includes a compressor, a radiator, an ejector, a suction side evaporator disposed to evaporate refrigerant to be drawn into a refrigerant suction port of the ejector, and a discharge capacity control portion configured to control a refrigerant discharge capacity of the compressor. The discharge capacity control portion increases the refrigerant discharge capacity of the compressor in accordance with an increase of a requirement capacity required in a refrigerant cycle of a general operation, when the requirement capacity is larger than a standard value. In contrast, when the requirement capacity required in the refrigerant cycle is equal to or smaller than the standard value, the discharge capacity control portion controls the refrigerant discharge capacity of the compressor to be switched alternately between a high capacity operation and a low capacity operation. Thus, a refrigerant circulation amount in the refrigerant cycle can be suitably adjusted.

Abstract: A heat transfer system defines a closed loop that contains a working fluid that is circulated through the closed loop. The heat transfer system includes an electrochemical compressor including one or more electrochemical cells electrically connected to each other through a power supply. Each electrochemical cell includes a gas pervious anode, a gas pervious cathode, and an electrolytic membrane disposed between and in intimate electrical contact with the cathode and the anode. The heat transfer system also includes a tubular system that receives at least one electrochemically-active component of the working fluid from an output of the electrochemical compressor and, if present, other components of the working fluid that bypass the electrochemical compressor. The tubular system has a geometry that enables at least a portion of the received working fluid to be imparted with a gain in kinetic energy as it moves through the tubular system.

Abstract: An ejector (38) has ports (40, 42, 44) for receiving a motive flow and a suction flow and discharging a combined flow. The ejector has a motive flow inlet, a suction flow inlet (42), and an outlet (44). A suction flow flowpath extends from the suction flow inlet. A motive flow flowpath extends from the motive flow inlet to join the suction flow flowpath and form a combined flowpath exiting the outlet. The ejector comprises a plurality of motive flow nozzles (100, 302, 402, 602, 702, 802) along the motive flow flowpath. The motive flow nozzles are oriented to impart a tangential velocity component to the motive flow. A plurality of diffusers (130, 304, 404, 604, 704, 804) are along the combined flowpath and are oriented to recover the tangential velocity from the combined flow.

Abstract: An apparatus and a method generate power and refrigeration from low-grade heat. The apparatus includes a heating module, a power generator module, an ejector, a heat exchanger, a condenser module, a low-temperature evaporator, a reservoir, a pressure pump and two direction controllable three-way valves. The heating module includes a heat source and a boiler. The power generator module includes an expansion turbine and a power generator. The condenser module includes a condenser and a cooling tower. The method is that the direction controllable three-way valves are operated to change the flow directions of the working fluid for executing a power generation and refrigeration mode, a power generation mode, a refrigeration mode or an idle mode.

Abstract: An ejector has a primary inlet (40), a secondary inlet (42), and an outlet (44). A primary flowpath extends from the primary inlet to the outlet. A secondary flowpath extends from the secondary inlet to the outlet. A mixer convergent section (114; 300; 400) is downstream of the secondary inlet. A motive nozzle (100) surrounds the primary flowpath upstream of a junction with the secondary flowpath. The motive nozzle has a throat (106) and an exit (110). An actuator (204) is coupled to the motive nozzle to drive a relative streamwise shift of the exit and convergent section.

Abstract: A unit for an ejector-type refrigeration cycle includes an ejector, first and second evaporators connected in parallel to a downstream side of the ejector and configured to evaporate the refrigerant discharged from the outlet of the ejector, and a refrigerant distributor configured to distribute the refrigerant discharged from an outlet of the ejector to a side of the first evaporator and a side of the second evaporator. The ejector draws refrigerant from a refrigerant suction port by a high-velocity refrigerant flow jetted from a nozzle portion, and mixes the refrigerant injected from the nozzle portion with the refrigerant drawn from the refrigerant suction port so as to discharge the mixed refrigerant from the outlet of the ejector. The ejector and the refrigerant distributor are connected to each other such that the refrigerant discharged from the outlet of the ejector directly flows into the refrigerant distributor.

Abstract: In a refrigeration cycle apparatus, a compressor, a condenser, a first flow control valve, a refrigerant storage container, a second flow control valve, and a first evaporator are connected in this order, and a third flow control valve, an ejector, a second evaporator, and the compressor are connected in this order so as to branch from an outlet of the condenser. A driving refrigerant inlet of the ejector is connected to the third flow control valve, a suction refrigerant inlet of the ejector is connected to an outlet of the first evaporator, and a mixed refrigerant outlet of the ejector is connected to a refrigerant inlet of the second evaporator. The refrigeration cycle apparatus has a bypass circuit which branches from a refrigerant pipe connecting the condenser and the second flow control valve and is connected to the mixed refrigerant outlet of the ejector via a fourth flow control valve.

Abstract: A battery cooling system operates by pumping liquid through a cooling fluid circulation path. Because the battery cooling system pumps liquid, the compression system that generates the cooling power does not require the use of a condenser. The compression system utilizes a compression wave. An evaporator of the cooling system operates in the critical flow regime in which the pressure in an evaporator tube will remain almost constant and then ‘jump’ or ‘shock up’ to an increased pressure.

Abstract: Refrigerating device formed by a main compressor (190), a condenser (140) downstream of and in fluid communication with the main compressor (190), main expansion means (170) downstream of the condenser (140) and an evaporator (180) downstream of and in fluid communication with the main expansion means (170), which also comprises a turbocompressor unit (160) in fluid communication between the evaporator (180) and the main compressor (190) and a heat exchanger (150, 152) having a hot branch (150c) connected upstream, via an inlet line (145), to the condenser (140) and downstream, via an outlet line (149), to the main expansion means (170) and a cold branch (15Of) connected, upstream, to an expansion means (142, 144) mounted on a branch (146) of the line (145) and, downstream, to a turbine portion (162) of the turbocompressor unit (160). The invention also relates to a method for circulating a refrigerating fluid inside the abovementioned device.

Abstract: The invention relates to an injection device for injecting an injection medium into a volumetric flow of a line system. The injection device comprises a housing with at least one first compartment which is set up to receive an injection medium, and at least one second compartment which is spatially separated from the first compartment, both compartments having an injection unit.

Abstract: A system (200; 250; 270) has first (220) and second (222) compressors, a heat rejection heat exchanger (30), first (38) and second (202) ejectors, a heat absorption heat exchanger (64), and a separator (48). The heat rejection heat exchanger is coupled to the second compressor to receive refrigerant compressed by the second compressor. The first ejector has a primary inlet (40) coupled to the heat rejection exchanger to receive refrigerant, a secondary inlet (42), and an outlet (44). The second ejector has a primary inlet (204) coupled to the heat rejection heat exchanger to receive refrigerant, a secondary inlet (206), and an outlet (208). The separator has an inlet (50) coupled to the outlet (44) of the first ejector to receive refrigerant from the first ejector. The separator has a gas outlet (54) coupled to the secondary inlet (206) of the second ejector via the first compressor (220) to deliver refrigerant to the second ejector.

Abstract: A system has a compressor (22), a heat rejection heat exchanger (30), first and second ejectors (38, 202), first and second heat absorption heat exchangers (64, 220), and first and second separators (118, 210). The heat rejection heat exchanger is coupled to the compressor to receive refrigerant compressed by the compressor. The first ejector has a primary inlet coupled to the heat rejection exchanger to receive refrigerant, a secondary inlet, and an outlet. The first separator has an inlet coupled to the out let of the first ejector to receive refrigerant from the first ejector. The first separator has a gas outlet coupled to the compressor to return refrigerant to the compressor. The first separator has a liquid outlet coupled to the secondary inlet of the ejector to deliver refrigerant to the first ejector.

Abstract: A system has a compressor (22, 412). A heat rejection heat exchanger (30) is coupled to the compressor to receive refrigerant compressed by the compressor. The system has a heat absorption heat exchanger (64). The system includes a separator (170) comprising a vessel having an interior. The separator has an inlet, a first outlet, and a second outlet. An inlet conduit may extend from the inlet and may have the conduit outlet positioned to discharge an inlet flow into the vessel interior to cause the inlet flow to hit a wall before passing to a liquid refrigerant accumulation in the vessel.

Abstract: An ejector refrigerant cycle device includes a radiator for radiating heat of high-temperature and high-pressure refrigerant discharged from a compressor, a branch portion for branching a flow of refrigerant on a downstream side of the radiator into a first stream and a second stream, an ejector that includes a nozzle portion for decompressing and expending refrigerant of the first stream from the branch portion, a decompression portion for decompressing and expanding refrigerant of the second stream from the branch portion, and an evaporator for evaporating refrigerant on a downstream side of the decompression portion. The evaporator has a refrigerant outlet coupled to the refrigerant suction port of the ejector. Furthermore, a refrigerant radiating portion is provided for radiating heat of refrigerant while the decompression portion decompresses and expands refrigerant. For example, the refrigerant radiating portion is provided in an inner heat exchanger.

Abstract: A vapor compression refrigerating cycle apparatus includes a compressor, a radiator, first and second throttle devices, a flow distributor, an ejector, a suction passage, and first and second evaporators. The flow distributor separates refrigerant decompressed through the first throttle device into a first passage and a second passage. The first passage is in communication with a nozzle portion of the ejector. The second passage is in communication with a suction portion of the ejector through the suction passage. The second throttle device and the second evaporator are disposed on the suction passage. The flow distributor is configured to be capable of adjusting a ratio of a flow rate of refrigerant passing through the second passage to a flow rate of refrigerant passing through the first passage in accordance with a heat load of at least one of the radiator, the first evaporator and the second evaporator.

Abstract: An HVAC system that uses a mechanical compressor powered by vaporized refrigerant and/or electric power, to increase efficiency in a jet ejector cooling cycle. The device is further able to convert thermal energy to electric power which may be used to meet internal or external requirements, for example, to activate control a system or charge a battery. Compatible input power includes only thermal energy, only electric energy or a combination of the two. Motive thermal energy may be input at a wide range of temperature and include both waste and non-waste heat sources such as that from an internal combustion engine and fuel-fired heater. Solar thermal and solar photovoltaic may also be used when collected from either concentrated or non-concentrated sources. Embodiments of the device are equally well suited to both mobile and stationary applications.

Abstract: In an evaporator unit for a refrigerant cycle device, an evaporator is connected to an ejector to evaporate refrigerant to be drawn into a refrigerant suction port of the ejector or the refrigerant flowing out of the outlet of the ejector. The evaporator includes a plurality of tubes in which the refrigerant flows, and a tank configured to distribute the refrigerant into the tubes or to collect the refrigerant from the tubes. The ejector is located in the tank, and the nozzle portion is brazed to the tank to be fixed into the tank. The tank may be a header tank directly connected to the tubes or may be a separate tank separated from the header tank.

Abstract: A heat exchanger may be associated with a heat transfer system to promote flow of heat energy from a heat source to a multi-phase fluid. The heat exchanger may be associated with an expansion portion. The fluid may be a refrigerant to which nano-particles may be added. Embodiments of the present invention may be implemented in an air-conditioning system as well as a water heating system.

Abstract: A heat exchanger may be associated with a heat transfer system to promote flow of heat energy from a heat source to a multi-phase fluid. The heat exchanger may be associated with an expansion portion. The fluid may be a refrigerant to which nano-particles may be added. Embodiments of the present invention may be implemented in an air-conditioning system as well as a water heating system.

Abstract: A supersonic cooling system operates by pumping liquid. Because the supersonic cooling system pumps liquid, the compression system does not require the use of a condenser. The compression system utilizes a compression wave. An evaporator of the compression system operates in the critical flow regime where the pressure in an evaporator tube will remain almost constant and then ‘jump’ or ‘shock up’ to the ambient pressure.

Abstract: A supersonic cooling system operates by pumping liquid. Because the supersonic cooling system pumps liquid, the compression system does not require the use of a condenser. The compression system utilizes a compression wave. An evaporator of the compression system operates in the critical flow regime where the pressure in an evaporator tube will remain almost constant and then ‘jump’ or ‘shock up’ to the ambient pressure.

Abstract: A flow path of a nozzle included in an ejector includes a convergent taper portion in which the cross-sectional area of the flow path gradually decreases toward the downstream side, a cylindrical flow path extending from a downstream end of the convergent taper portion and being continuous for a predetermined length and in a cylindrical shape, and a divergent taper portion continuous with a downstream end of the cylindrical flow path and in which the cross-sectional area of the flow path gradually increases toward the downstream side. By providing the cylindrical flow path, a length of the divergent taper portion is reduced.

Abstract: Embodiments of apparatus, transport refrigeration units, and methods for operating the same can control cooling capacity for a refrigerant vapor compression system. Embodiments can provide use discharge pressure control for modulating cooling capacity for a refrigerant vapor compression system. In one embodiment, discharge pressure control can reduce the cooling capacity without increasing the compressor pressure ratio or discharge temperature. In one embodiment, discharge pressure control can reduce the cooling capacity independently of system superheat. In one embodiment, discharge pressure control can control a compressor discharge temperature; for example, to remain below a threshold temperature.

Abstract: A supersonic cooling system operates by pumping liquid. Because supersonic cooling system pumps liquid, the compression system does not require the use a condenser. Compression system utilizes a compression wave. The evaporator of compression system operates in the critical flow regime where the pressure in an evaporator tube will remain almost constant and then ‘jump’ or ‘shock up’ to the ambient pressure.

Abstract: A system has a compressor. A heat rejection heat exchanger is coupled to the compressor to receive refrigerant compressed by the compressor. An ejector has a primary inlet coupled with heat rejection heat exchanger to receive refrigerant, a secondary inlet, and an outlet. The system has a heat absorption heat exchanger. The system includes means for providing at least of a 1-10% quality refrigerant to the heat absorption heat exchanger and an 85-99% quality refrigerant to at least one of the compressor and, if present, a suction line heat exchanger.

Abstract: A refrigerant vapor compression system (10) includes a plurality of components, including a flash tank (70), connected in a refrigerant flow circuit by a plurality of refrigerant lines (2, 4, 6, 8). The system internal volume equals to the sum of the internal volumes of the plurality of components and the internal volume of the plurality of refrigerant lines. The internal volume of the flash tank ranges from at least 10% to about 30% of the total system internal volume.

Abstract: A high efficiency air conditioning and refrigeration system and cycle comprises a vapor compressor and two independent ejectors operatively connected to high and low-pressure sides of the compressor, respectively. The two ejectors reduce the overall pressure ratio of the mechanical vapor compressor resulting in dramatically increased thermodynamic cycle efficiency. As one example of its potential applications for residential, commercial or industrial uses, a 150 ton capacity of a water-cooled chiller designed in accordance with the present invention is predicted to provide the power consumption as low as 0.47 kW/ton, when operated in accordance with the cooling methods of the present invention, which corresponds to 7.47 of Coefficient of Performance (COP).

Abstract: A system (200; 300; 400; 500; 600) has a compressor (22; 200, 221). A heat rejection heat exchanger (30) is coupled to the compressor to receive refrigerant compressed by the compressor. An ejector (38) has a primary inlet (40) coupled to the heat rejection heat exchanger to receive refrigerant, a secondary inlet (42), and an outlet (44). A separator (48) has an inlet (50) coupled to the outlet of the ejector to receive refrigerant from the ejector, a gas outlet (54), and a liquid outlet (52). One or more valves (244, 246, 248, 250) are positioned to allow switching of the system between first and second modes.

Abstract: In an integrated unit including an evaporator and an ejector located inside a tank of the evaporator, a first vibration-isolating seal member and a second vibration-isolating seal member are disposed in a gap between an outer surface of the ejector and an inner surface of the tank. The first vibration-isolating seal member is located between a refrigerant discharge port and a refrigerant suction port of the ejector in a longitudinal direction, and the second vibration-isolating seal member is located between a refrigerant flow inlet of the ejector and the refrigerant suction port in the longitudinal direction. Furthermore, the first vibration-isolating seal member has a seal capability lower than that of the second vibration-isolating seal member, and a vibration isolation capability higher than that of the second vibration-isolating seal member.

Abstract: An evaporator unit includes an evaporator configured to evaporate a refrigerant, and a capillary tube configured to decompress the refrigerant. The capillary tube has two longitudinal ends bonded to the evaporator. At least one position of a middle portion between the two longitudinal ends of the capillary tube is fixed to the evaporator by press-contacting the evaporator. Therefore, it can prevent a crack from being caused at the bonding portions of the two longitudinal ends of the capillary tube.