41results about "Desuperheaters" patented technology

The installation (21) comprises: a primary refrigerant circuit (22), including: - an outdoor unit (23) comprising at least: a first compressor (34), a first heat exchanger (25) configured to exchange heat between a first refrigerant and the outside air, and at least one first expansion valve (26), - an indoor unit (29) comprising at least one second heat exchanger (30) configured to exchange heat between the first refrigerant and the inside air, a secondary refrigerant circuit (32) independent of the primary circuit (22), intended to be installed inside the dwelling and comprising: - a water heater comprising a tank (33), a condenser (35), a second compressor (34) and at least one second expansion valve (36),the primary circuit (22) comprising at least one third heat exchanger (37) allowing the primary circuit (22) and the secondary circuit (32) to be thermally coupled directly or indirectly. Figure from the abstract: Figure 2,

A refrigeration system, having a main loop operating with a first refrigerant and including a first heat exchanger unit connected between a compressor unit and an expansion unit upstream of an evaporation unit, includes a subcooling loop. The subcooling loop has a second refrigerant circulating therein via a pump unit and connects to the first heat exchanger unit to heat-up the second refrigerant. The subcooling loop runs to an air circulation unit located downstream the first heat exchanger unit to cool down the second refrigerant and warm-up air flowing into the air circulation unit.

An apparatus includes a high side heat exchanger, a flash tank, a load, a compressor, and a heat exchanger. The high side heat exchanger removes heat from a refrigerant. The flash tank stores the refrigerant from the high side heat exchanger and to discharge a flash gas. The load uses the refrigerant from the cool a space proximate the load. The compressor compresses the refrigerant from the load. The heat exchanger transfers heat from the refrigerant from the compressor to the flash gas before the refrigerant from the compressor reaches the high side heat exchanger. The heat exchanger directs the flash gas to the compressor after heat from the refrigerant from the compressor is transferred to the flash gas and directs the refrigerant from the compressor to the high side heat exchanger after heat from the refrigerant from the compressor is transferred to the flash gas.

The present invention relates to a combined plant comprising a heat pump circuit having a refrigerant evaporator designed to evaporate a refrigerant, a compressor designed to compress the refrigerant, the compressor fluidly connected to the refrigerant evaporator, a refrigerant condenser designed to condense the refrigerant, the refrigerant condenser fluidly connected to the compressor, a throttling device designed to reduce the temperature and pressure of the refrigerant, the throttling device fluidly connected to the refrigerant condenser and the refrigerant evaporator, and a heat generation plant having a cooling circuit with a refrigerant designed to heat the refrigerant during operation of the heat generation plant, the refrigerant fluidly connected to the refrigerant evaporator such that the refrigerant is heated in the refrigerant evaporator.

The application relates to a full-liquid evaporation type air source heat pump system, belonging to the field of heat supply air conditioning. The two ends of an exhaust pipeline are communicated with the outlet of a compressor and the inlet of a condenser; one end of a condensing pipeline is communicated with the outlet of the condenser and a gas-liquid separator; one end of a suction pipeline is communicated with the inlet of the compressor and the gas-liquid separator; the gas-liquid separator is communicated with multiple branch pipelines through a second condensing pipeline; each branch pipeline is communicated with the inlet of a corresponding evaporator; the outlets of multiple evaporators are communicated with a second suction pipeline through corresponding collecting pipelines; a bypass pipeline is communicated with the exhaust pipeline and one end of multiple branch pipelines; the other end of the branch pipeline is communicated with the inlet of the evaporator; one end of a branch collecting pipeline is communicated with the outlet of the evaporator; the other end of the branch collecting pipeline is communicated with a total collecting pipeline; the total collecting pipeline is communicated with the second suction pipeline; and the second suction pipeline is communicated with the second inlet of the gas-liquid separator. The application solves the problems of small single-machine heating capacity and low dry evaporation heat exchange efficiency of the existing air source heat pump unit.

To provide a refrigerating device capable of switching operation between an operation for supplying hot water and an operation not supplying hot water according to demand of hot water supply, while performing a cooling operation of the refrigerating device.SOLUTION: There is provided a refrigerating device for cooling a refrigerant by performing heat exchange between the refrigerant and water. A connection is made by means of refrigerant piping among a low-stage compression mechanism, an intercooler for cooling the refrigerant discharged from the low-stage compression mechanism, a high-stage compression mechanism for sucking the refrigerant having passed through the intercooler, and a gas cooler for cooling the refrigerant discharged from the high-stage compression mechanism. Further, a connection is made by means of water piping among water supply means, the intercooler, the gas cooler, an external heat radiation device, hot water supply means, and a water-feeding mechanism. A first flow rate adjustment mechanism is provided for adjusting a flow rate of water flowing into the hot water supply means and the external heat radiation device after passing through the gas cooler.SELECTED DRAWING: Figure 1

An electric compressor has a housing (19), an electric motor (11), a refrigerant compression unit (12), an electric control device (26), a refrigerant flow channel (25), and a cooling medium flow channel (20). The electric motor (11) is configured to rotate in response to energization of windings (32) of the electric motor (11). The refrigerant compression unit (12) is configured to be driven by the electric motor (11) such that a refrigerant is sucked in and the refrigerant is discharged after compressing the refrigerant. The electric control device includes an electronic component (27) configured to generate heat in response to energization of the electronic component (27). The electrical control device (26) is configured to control the energization of the windings (32) of the electric motor (11).The coolant flow channel (25), which is formed on the inside of the housing (19), is configured to enable heat exchange between the coolant flowing in the coolant flow channel (25) before being sucked into the coolant compression unit (12) and having a low temperature and low pressure, and the coils (32) and the electronic component (27). The cooling medium flow channel (20), which is formed on the inside of the housing (19), is configured to enable heat exchange between a cooling medium flowing in the cooling medium flow channel (20) and the coils (32) and the electronic component (27).

A refrigeration line set is provided including a gas line with first and second openings formed through a sidewall thereof. A liquid line includes exterior sections and an interior section extending through the gas line. A connection unit is positioned at each opening in the gas line, and each connection unit includes a line fitting attached to an end of the interior section of the liquid line, and a cap attached to an end of an exterior section of the liquid line and fixed to the sidewall of the gas line around the opening.

This invention belongs to the field of new energy technology and discloses a dehumidifier two-phase assembly and its ultra-high energy efficiency dehumidifier. The dehumidifier two-phase assembly is a horizontal cross-section V-shaped two-phase assembly module consisting of at least two two-phase assembly modules; or a structure consisting of two-phase assembly modules and a horizontal cross-section V-shaped two-phase assembly module, etc.; the long sides of the fins of the two-phase assembly modules are arranged in the vertical direction or nearly vertical direction in the horizontal air duct; the horizontal cross-section of the dehumidifier two-phase assembly perpendicular to the long sides of the fins is a sawtooth-shaped zigzag. The ultra-high energy efficiency dehumidifier includes a shell, the above-mentioned dehumidifier two-phase assembly, a compressor, and an exhaust chamber; the air outlet on the back panel corresponds to the air intake of the vertically arranged fan; the exhaust port of the exhaust chamber is located on the side plate or back plate of the shell. This invention taps into the potential of the low-temperature exhaust "cold" resources of the evaporator, implements deep subcooling of the condensate for efficient dehumidification; and constructs a heavy-duty two-phase assembly to achieve ultra-high energy efficiency dehumidification.

The installation (21) comprises: a primary refrigerant circuit (22), including: - an outdoor unit (23) comprising at least: a first compressor (34), a first heat exchanger (25) configured to exchange heat between a first refrigerant and the outside air, and at least one first expansion valve (26), - an indoor unit (29) comprising at least one second heat exchanger (30) configured to exchange heat between the first refrigerant and the inside air, a secondary refrigerant circuit (32) independent of the primary circuit (22), intended to be installed inside the dwelling and comprising: - a water heater comprising a tank (33), a condenser (35), a second compressor (34) and at least one second expansion valve (36),the primary circuit (22) comprising at least one third heat exchanger (37) allowing the primary circuit (22) and the secondary circuit (32) to be thermally coupled directly or indirectly. Figure from the abstract: Figure 2,

The application discloses a carbon dioxide refrigeration system based on photovoltaic photothermal and soil cross-seasonal cold storage supercooling, which comprises a PV / T system connected with a CO2 refrigeration cycle system, used for providing electric energy for the CO2 refrigeration cycle system and providing hot water for users; the CO2 refrigeration cycle system is used for refrigerating specific space; a heating system is used for heating specific space; a soil cold storage supercooling cycle system is connected with the PV / T system and the CO2 refrigeration cycle system respectively, used for storing cold in soil in winter and releasing cold from soil in summer, and cooling the PV / T system and the CO2 refrigeration cycle system. The application is equipped with the soil cold storage supercooling technology, uses the heat generated by the gas cooler, the environmental energy, the cold of tap water and the natural cold in external environment air to cool the refrigerant and the solar panel, and improves the refrigeration efficiency of the whole CO2 refrigeration system and the power generation efficiency of the PV / T system.

The invention discloses a heating, ventilation, air conditioning and refrigeration (HVACamp; a system (R, R) includes a heat pump system configured to circulate a working fluid therethrough, and a water distillation system coupled to the heat pump system. The water distillation system includes a heat exchanger configured to transfer heat between a flow of the working fluid from the heat pump system and a fluid flow from a water source to produce a liquid fluid portion and a distilled vapor fluid portion. In addition, the water distillation system includes a storage vessel configured to receive and store the liquid fluid portion and the distilled vapor fluid portion from the heat exchanger.

The invention discloses a multi-energy complementary self-driven energy release system, and relates to the technical field of comprehensive utilization of energy. The multi-energy complementary self-driving energy release system comprises an energy storage path, an energy release path, a self-driving unit and a steam supply unit. The energy storage path comprises a compressor unit, a cold box and a liquid air storage tank. The energy release path comprises an evaporator and a low-temperature expansion machine. The self-driving unit comprises a first circulating fan and a first generator. The steam supply unit comprises a reboiler, a rectifying tower, a superheater and a first liquid pump. The compressor unit of the system achieves heat supply, the evaporator achieves cold supply, the first generator achieves power supply, the first circulating fan achieves internal self-driven circulation, the superheater achieves steam supply, and the whole system can continuously provide compressed gas all day long.

A method for switching an operation of a refrigeration system between single and multiple compressor cycles based on ambient temperature is disclosed. The method receiving a detected ambient temperature and determining whether the detected ambient temperature is less than a threshold ambient temperature. The method further comprises communicating a first electronic signal to a switching valve to bypass a second compressor and allow refrigerant to flow from the switching valve toward an outdoor heat exchanger in response to determining that the detected ambient temperature is less than the threshold temperature. The method further comprises communicating a second electronic signal to the switching valve to allow the refrigerant to flow from the switching valve toward the second compressor before flowing toward the outdoor heat exchanger in response to determining that the detected ambient temperature is equal to or more than the threshold temperature.

A heat pump (100) with an evaporator (50) for evaporating a fluid in order to obtain an evaporated fluid is described, the evaporator (50) having an evaporator sump (52); with a compressor having a first compressor stage (10) and a second compressor stage (20), the compressor being arranged in the flow direction of the evaporated fluid during operation of the heat pump (100) between the evaporator (50) and a condenser (60) and being designed to compress the evaporated fluid in order to obtain compressed fluid; and with a condenser (60) for condensing the compressed fluid; and with an intermediate cooler (40) which is connected to an intermediate cooling fluid supply line (3) and which has an operating element (42), the operating element (42) being arranged between the first compressor stage (10) and the second compressor stage (20) and being designed to bring about an interaction between an intermediate cooling fluid, which can be supplied through the intermediate cooling fluid supply line (3), and a heated vaporous fluid, which can be discharged from the first compressor stage (10), and wherein the intermediate cooling fluid supply line (3) extends from the evaporator sump (52) to the operating element (42). Furthermore, methods for operating and producing the heat pump are described.

The present disclosure relates to a refrigeration circuit (100A, 100B, 100C) comprising: - at least one refrigerant pump (110) which is designed to compress a refrigerant and to circulate the refrigerant in the refrigeration circuit (100A, 100B, 100C), a temperature of the refrigerant after compression being higher than a critical temperature of the refrigerant; - at least one precooler (120) which is arranged downstream of the at least one refrigerant pump (110) in the refrigeration circuit (100A, 100B, 100C) and is designed to precool the refrigerant compressed by the at least one refrigerant pump (110); - at least one main cooler (130) which is arranged downstream of the at least one precooler (120) in the refrigeration circuit (100A, 100B, 100C) and is designed to further cool the refrigerant precooled by the at least one precooler (120); and - at least one main heat exchanger (14A, 140B) which is arranged downstream of the at least one main cooler (130) in the refrigeration circuit (100A, 100B, 100C).

An apparatus includes a high side heat exchanger, a flash tank, a load, a compressor, and a heat exchanger. The high side heat exchanger removes heat from a refrigerant. The flash tank stores the refrigerant from the high side heat exchanger and to discharge a flash gas. The load uses the refrigerant from the cool a space proximate the load. The compressor compresses the refrigerant from the load. The heat exchanger transfers heat from the refrigerant from the compressor to the flash gas before the refrigerant from the compressor reaches the high side heat exchanger. The heat exchanger directs the flash gas to the compressor after heat from the refrigerant from the compressor is transferred to the flash gas and directs the refrigerant from the compressor to the high side heat exchanger after heat from the refrigerant from the compressor is transferred to the flash gas.

A vapor cycle cooling system includes first and second compressor (112B) systems in parallel with one another, each compressor system including a motor, a motor controller (180, 280, 380, 480), and a first compressor (112A, 212A) in series with a second compressor (112B); a condenser (102, 202, 302) fluidically coupled to each compressor system; a filter drier (138, 238, 338), in series with, and fluidically coupled to the condenser (102, 202, 302); a first expansion device in series with, and fluidically coupled to, a flash heat exchanger (106, 206), the flash heat exchanger (106, 206) fluidically coupled to a second expansion device, the second expansion device fluidically coupled to a first evaporator (266), the first evaporator (266) fluidically coupled to each compressor system; a system controller (180, 280, 380, 480) electrically coupled to each motor controller (180, 280, 380, 480); and a motor and motor controller (180, 280, 380, 480) cooling loop fluidically coupled to the filter drier (138, 238, 338) and each motor, wherein the vapor cycle cooling system is configured to cool one or more thermal loads (264) for a vehicle.

Refrigerating fluid circuit (2) comprising a main branch (20) which comprises an accumulator (4), a compression device (3) and at least one first heat exchanger (31), the refrigerating fluid circuit (2) comprising a first branch (21) and a first branch (21) comprising at least one second heat exchanger (32), and a second branch comprising at least one third heat exchanger (33), the refrigerating fluid circuit (2) comprising a bypass branch (25) which starts at the second branch (22), the refrigerating fluid circuit (2) comprising a control member (8) which is configured to control the flow of the refrigerating fluid of the second branch (22) to the accumulator (4) and / or to the bypass branch (25).

A method (100) for controlling an operating discharge pressure in a multi-purpose HVAC system (10) including an outdoor unit (14), and an indoor unit (16), the HVAC system including a plurality of flow control valves configured to isolate the indoor unit from the multi-purpose HVAC system, a compressor (20) and a controller (50), operably coupled to a water heater module (12), the water heater module including at least one valve (62), the controller executing a method including operating (110) the multi-purpose HVAC system in a water heating mode, monitoring (120) the operating discharge pressure from the compressor; and generating (130) a signal commanding at least one of the plurality of flow control valves to isolate the indoor unit from the outdoor unit and water heater module and direct high pressure refrigerant to the indoor unit when the operating discharge pressure is greater than or equal to a predetermined pressure value.

A transcritical refrigeration system includes a gas cooler / condenser; a receiver configured to collect refrigerant produced by the refrigeration system; a gas bypass valve fluidly coupled to the outlet of the receiver and operable to control a pressure of the refrigerant in the receiver; and a medium temperature subsystem. The medium temperature subsystem includes one or more expansion valves; one or more medium temperature evaporators; and a suction group including one or more transcritical compressors operable to compress gas refrigerant and discharge the compressed gas refrigerant into a discharge line. The system includes a superheat control system that includes a heat exchanger system including a first side configured to carry gas refrigerant passing between the gas cooler / condenser and an inlet of the receiver, and a second side in heat transfer communication with the first side.

A transcritical refrigeration system (100, 300, 400, 500, 600, 700) includes a gas cooler / condenser (102); a receiver (108) configured to collect refrigerant produced by the refrigeration system (100, 300, 400, 500, 600, 700); a gas bypass valve (110) fluidly coupled to the outlet of the receiver (108) and operable to control a pressure of the refrigerant in the receiver (108); and a medium temperature subsystem (112, 504, 608, 704). The medium temperature subsystem (112, 504, 608, 704) includes one or more expansion valves (140); one or more medium temperature evaporators (142); and a suction group (514, 714) including one or more transcritical compressors (144, 516, 613, 616, 716) operable to compress gas refrigerant and discharge the compressed gas refrigerant into a discharge line. The system includes a superheat control system (104, 304, 404, 506, 604, 706) that includes a heat exchanger system (116, 520, 522, 610, 720, 722) including a first side configured to carry gas refrigerant passing between the gas cooler / condenser (102) and an inlet of the receiver (108), and a second side in heat transfer communication with the first side.

Various embodiments described herein include methods, devices, and systems for cooling or heating an area (e.g., a vehicle, a room, etc.). In one aspect, a refrigeration system includes a compressor, an external heat exchanger (HX), an internal HX, a multi-path refrigerant circuit, one or more valves, and a plurality of refrigerant lines fluidly coupling (i) the compressor, (ii) the external HX, (iii) the internal HX, (iv) the multi-path refrigerant circuit, and (v) a first set of one or more valves. The refrigeration system further includes a controller communicatively coupled to the one or more valves. The controller is configured to operate the refrigeration system in a plurality of modes, including a cooling mode and a heating mode.

A heat exchanger module with a first block of a first heat exchanger, further with a second block of a second heat exchanger, and further with an expansion valve, wherein the first block, the second block and the expansion valve are designed as an interconnected module.

The present invention discloses a transcritical carbon dioxide energy storage system and method integrated with amino energy storage and refrigeration. The system comprises an amino energy storage unit, a thermochemical energy storage unit, an ammonia refrigeration unit and a transcritical carbon dioxide energy storage unit; the amino energy storage unit comprises a solar collector, a liquid ammonia storage tank, a nitrogen and hydrogen storage tank and an air separator which are connected in sequence; the thermochemical energy storage unit comprises a methanol-water mixed solution preheater and a methanol steam reforming hydrogen production reactor; the ammonia refrigeration unit comprises a condenser, a first throttle valve, an evaporator and a cooler; the amino energy storage and ammonia refrigeration technology is coupled with the thermochemical energy storage technology, the generated nitrogen and hydrogen are stored for refrigeration to provide cold capacity, and the generated carbon dioxide is used for molten salt heat storage and transcritical carbon dioxide energy storage power generation, thereby achieving refrigeration and power supply without relying on external electricity; the carbon dioxide generated by the reaction is utilized multiple times, thereby greatly improving the energy storage density and efficiency of the system.

The application discloses a condenser and a refrigeration system. The condenser comprises a condenser shell, a condensing heat exchange pipe and a flasher. The condenser shell has a refrigerant inlet and a refrigerant outlet. The condensing heat exchange pipe is arranged in the condenser shell, the refrigerant enters the condenser shell from the refrigerant inlet to be condensed by the condensing heat exchange pipe and flows out through the refrigerant outlet. The flasher is arranged in the condenser shell and above the condensing heat exchange pipe. The flasher comprises a flash chamber and a cooling heat exchange pipe group. The flash chamber has a liquid inlet, a liquid outlet and a gas outlet. The liquid inlet of the flash chamber is connected with the refrigerant outlet so that the refrigerant is subjected to gas-liquid separation in the flash chamber, and the cooling heat exchange pipe group is connected with the gas outlet of the flash chamber. The condenser shell of the application is internally provided with the flasher, and the flasher is provided with the cooling heat exchange pipe group for circulating the separated gaseous refrigerant, so that the superheat degree of the gaseous refrigerant in the condenser is reduced, and the saturated temperature of the refrigerant during condensation is ensured, thereby improving the heat exchange efficiency.

A heat pump system provides at least six modes of heating, cooling, and / or domestic water heating operation, where domestic water heating may occur concurrently with heating or cooling a space in a structure. The heat pump system comprises a desuperheater positioned downstream of the compressor and operable as a desuperheater, a condenser or an evaporator, a source heat exchanger operable as either a condenser or an evaporator, a load heat exchanger operable as either a condenser or an evaporator, a reversing valve positioned downstream of the desuperheater heat exchanger and configured to alternately direct refrigerant flow from the desuperheater heat exchanger to one of the load heat exchanger and the source heat exchanger and to alternately return refrigerant flow from the other of the load heat exchanger and the source heat exchanger to the compressor, and an expansion valve positioned between the load heat exchanger and the source heat exchanger.

A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a heat pump system configured to circulate a working fluid therethrough, and a water distillation system coupled to the heat pump system. The water distillation system includes a heat exchanger configured to transfer heat between a flow of the working fluid from the heat pump system and a flow of fluid from a water source to generate a liquid fluid portion and a distilled vapor fluid portion. In addition, the water distillation system includes a storage vessel configured to receive, from the heat exchanger, and store the liquid fluid portion and the distilled vapor fluid portion.