30results 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,

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

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 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).

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 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 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.

The present disclosure relates to a refrigeration cycle (100A, 100B, 100C), comprising: - at least one refrigerant pump (110) designed to compress a refrigerant and circulate it in the refrigeration cycle (100A, 100B, 100C), wherein the temperature of the refrigerant after compression is 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 configured to precool the refrigerant compressed by the at least one refrigerant pump (110); - at least one main cooler (130) arranged downstream of the at least one pre-cooler (120) in the refrigeration circuit (100A, 100B, 100C) and configured to further cool the refrigerant pre-cooled by the at least one pre-cooler (120); and - at least one main heat exchanger (14A, 140B) located downstream of at least one main cooler (130) in the refrigeration circuit (100A, 100B, 100C).

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.

The ammonia gasification and energy recovery system comprises a liquid ammonia storage tank, an expansion machine, a compressor, a first heat exchange device, a second heat exchange device, a third heat exchange device and a boiler, the expansion machine drives the compressor, the liquid ammonia storage tank is connected with an inlet of a first throttling valve through an ammonia feeding pump, and an outlet of the first throttling valve is connected with an inlet of the first heat exchange device. An outlet of the first heat exchange device is connected with an inlet of the compressor and an inlet of the second heat exchange device through the flow controller, an outlet of the compressor is connected with a first inlet of the third heat exchange device, and an outlet of the second heat exchange device is connected with an inlet of the expansion machine. And a first outlet of the third heat exchange equipment is connected with the liquid ammonia storage tank through a second throttle valve, and a second outlet is connected with the boiler burner. Liquid ammonia cold energy is used for absorbing heat from a low-temperature heat source, pressure energy of the liquid ammonia cold energy is recycled to be used for the compression heat pump to generate higher-grade heat, meanwhile, the combustion stability of ammonia entering the boiler can be improved, and fuel consumption is reduced.

This invention belongs to the field of new energy technology and discloses an ultra-high efficiency dehumidifier with heavy load capacity, including a shell, a dehumidifier assembly, a compressor, and an exhaust chamber. The negative pressure chamber is composed of the dehumidifier assembly, part of the shell, and a back plate. The back plate is provided with several air outlets of the negative pressure chamber, and each air outlet is equipped with a vertically arranged fan. The dehumidifier assembly is located on the air inlet side of the shell and serves as the air inlet of the negative pressure chamber. The air outlets on the back plate correspond to the air inlets of the vertically arranged fans. The air outlets are connected to the exhaust chamber. The exhaust outlet of the exhaust chamber is located on the side plate, top plate, or back plate of the shell. The shell contains two sets of dehumidifier assemblies and their negative pressure chambers. The shell also contains a compressor chamber for housing a refrigerant circuit assembly including a compressor, a gas-liquid separator, and an electrical box.

A refrigerant fluid circuit for a heat treatment system, including a main branch starting at a first convergence point and terminating at a first divergence point and including at least one accumulator, a compression device and a first heat exchanger, the refrigerant fluid circuit including a first branch and a second branch, both starting at the first divergence point and terminating at the first convergence point, the first branch including a second heat exchanger, the second branch including a third heat exchanger. The refrigerant fluid circuit includes a bypass branch which starts at a second divergence point situated on the second branch, downstream of the third heat exchanger, and which terminates at a second convergence point situated on the main branch, downstream of the at least one accumulator and upstream of the compression device.

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.

The invention relates to refrigeration circuits, i.e., heat pumps and chillers, with a desuperheater for the compressed refrigerant and / or a subcooler for the liquefied refrigerant. The use of batch processes drastically improves the efficiency (COP) of the systems. In a first part of the invention, the heat from the desuperheating and, if applicable, from the subcooling of the refrigerant is used to heat water, as shown in Figure 2, which includes a desuperheater 2 and a subcooler 4. The two batch storage tanks 7a and 7b, which allow the heat pump to operate in batch mode, are also shown. In a second part of the invention, the heat from the subcooling of the refrigerant is used for additional refrigerant evaporation in an additional preheater 22 and evaporator 23. Since the temperature level of the subcooling heat is higher than that of the heat source of the refrigeration circuit, the overall COP of the refrigeration circuit is increased by the design and operation according to the invention. The presented design allows, to a first approximation, two times the process improvement compared to a design with a conventional economizer. And unlike designs with an economizer, the design according to the invention is also feasible for single-stage refrigeration circuits. To efficiently utilize the heat from the subcooling for evaporation, a batch process is employed according to the invention.The setup is shown in Figure 6: The refrigerant, which is additionally evaporated with the heat of heat removal, is supplied to the condenser 3 by means of an additional compressor 1z and the heat generated during condensation is available as process heat.

The heated suction line accumulator may include a tank extending longitudinally and having a first internal cavity, and a refrigerant input orifice extending through a sidewall of the tank and configured to receive an input refrigerant. A longitudinally extending intermediate tube may be disposed within the first internal cavity. At least one opening may extend through a sidewall of the intermediate tube to allow the input refrigerant to flow therethrough. At least one heated line may be disposed within the tank and include a first plurality of coils wound around the intermediate tube. The heated line may be configured to receive a heating fluid for heating the input refrigerant. An inner tube may be disposed within the intermediate tube and configured to convey the heated input refrigerant to an exterior of the tank.

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-pass refrigerant circuit, one or more valves, a plurality of refrigerant lines fluidly coupling (i) the compressor, (ii) the external HX, (iii) the internal HX, (iv) the multi-pass refrigerant circuit, and (v) a first set of one or more valves. The refrigeration system also 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 refrigeration mode and a heating mode.

The various embodiments described herein include methods, devices, and systems for cooling or heating an area (e.g., a vehicle, room, etc.). In one aspect, a refrigeration system includes a compressor, an external heat exchanger (HX), an internal HX, a multi-pass refrigerant circuit, one or more valves, a plurality of refrigerant lines fluidically coupling (i) the compressor, (ii) the external HX, (iii) the internal HX, (iv) the multi-pass refrigerant circuit, and (v) the first set one or more valve. 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.