CN218936541U - Vacuum film dehumidification air conditioning system with solar absorption refrigeration auxiliary operation - Google Patents
Vacuum film dehumidification air conditioning system with solar absorption refrigeration auxiliary operation Download PDFInfo
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- CN218936541U CN218936541U CN202222787671.XU CN202222787671U CN218936541U CN 218936541 U CN218936541 U CN 218936541U CN 202222787671 U CN202222787671 U CN 202222787671U CN 218936541 U CN218936541 U CN 218936541U
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Abstract
The utility model discloses a solar absorption refrigeration auxiliary operation vacuum film dehumidification air-conditioning system, which comprises a solar absorption refrigeration subsystem, a vapor compression refrigeration subsystem, a vacuum film dehumidification subsystem, a cooling water loop and a chilled water loop, wherein the solar absorption refrigeration subsystem and the vapor compression refrigeration subsystem bear the sensible heat load of a building air conditioner, and the vacuum film dehumidification subsystem bears the latent heat load of the building air conditioner. The utility model solves the problems that the evaporating temperature of the solar absorption refrigeration system is higher and dehumidification is difficult to realize by utilizing the temperature and humidity independent control technology and a special heat collector area design method, and simultaneously avoids the problem that the vapor compression refrigeration system is frequently started and stopped when the solar energy resource fluctuates, thereby improving the control precision of indoor hot and humid environment, reducing the energy consumption of an air conditioner, reducing the carbon emission and meeting the multi-party requirements.
Description
Technical Field
The utility model relates to the field of heating ventilation and air conditioning, in particular to a vacuum membrane dehumidification air conditioning system with solar absorption refrigeration auxiliary operation.
Background
The vacuum film dehumidifying air-conditioning system is used as a novel building air-conditioning system, and is stable, reliable and compact in structure. The vacuum film dehumidification air conditioning system is an air conditioning system based on a vacuum film dehumidification technology, wherein the vacuum film dehumidification technology is a technology for forming chemical potential difference on two sides of a water vapor selective transmission film through a vacuum pump and drying air by utilizing the chemical potential difference. And this technique is considered to be an isothermal dehumidification technique because it is accompanied by simultaneous desorption of water vapor during dehumidification. The vacuum film dehumidification technology has the advantages of improving the control precision of indoor heat and humidity environment and the thermal comfort of human body, reducing the energy consumption of the air conditioner and reducing the carbon emission, but has less application in the field of heating ventilation and air conditioning at present.
The solar absorption refrigeration system has the remarkable advantages of energy conservation, emission reduction and environmental protection, is a sustainable development air conditioner refrigeration technology, but has the problems that the efficiency of the heat collector and the unit is low and the all-weather refrigeration is difficult when the radiation intensity is small, and simultaneously has the problems that the evaporation temperature is high and the dehumidification is difficult to realize. Therefore, when the solar absorption refrigeration system is applied, the vapor compression refrigeration system is arranged to ensure all-weather refrigeration, but solar energy resources are frequently fluctuated, so that the vapor compression refrigeration system is frequently started and stopped, the comprehensive performance and the service life of the vapor compression refrigeration system are greatly reduced, and meanwhile, in order to ensure dehumidification requirements, the energy consumption of a unit is higher, and the performance is poor. Therefore, the reliable operation of the system is an urgent need, and the method has important significance for further popularization and application of the solar absorption refrigeration system.
Therefore, how to apply the vacuum film dehumidifying air-conditioning system in the field of heating ventilation and air-conditioning, and solve the problem that the solar energy absorption refrigerating system is difficult to dehumidify when the evaporating temperature is higher and the problem that the vapor compression refrigerating system is frequently started and stopped when the solar energy resource fluctuates at the same time, designing a novel efficient vacuum film dehumidifying air-conditioning system becomes a technical problem which needs to be solved urgently by the technicians in the field.
Disclosure of Invention
(1) Technical problem
The utility model aims to provide a vacuum film dehumidification air-conditioning system which solves the problems that a solar absorption refrigeration system is difficult to dehumidify and a vapor compression refrigeration system is frequently started and stopped when solar resources fluctuate when the solar absorption refrigeration system is operated in the heating ventilation air-conditioning field, and realizes efficient and reliable operation.
(2) Technical proposal
In order to solve the technical problems, the utility model provides a vacuum film dehumidification air-conditioning system for solar absorption refrigeration auxiliary operation, which comprises a solar absorption refrigeration subsystem, a vapor compression refrigeration subsystem, a vacuum film dehumidification system subsystem, a cooling water loop and a chilled water loop. The solar absorption refrigeration subsystem comprises a solar heat collector, a generator, a first condenser, a first throttle valve, a first evaporator, an absorber, a solution circulating pump, a second throttle valve, a solution heat exchanger, a hot water pump and related connecting pipelines, wherein the first condenser and the absorber are both components of a cooling water loop, and the first evaporator is also a component of a chilled water loop. In the solar absorption refrigeration subsystem, the output end of a solar heat collector is connected with the input end of a generator heat exchanger, the output end of the generator heat exchanger is connected with the input end of a hot water pump, the output end of the hot water pump is connected with the input end of the solar heat collector, the refrigerant vapor output end of the generator is connected with the input end of a first condenser, the output end of the first condenser is connected with the inlet of a first throttle valve, the outlet of the first throttle valve is connected with the input end of a first evaporator, the output end of the first evaporator is connected with the refrigerant vapor input end of an absorber, the solution output end of the absorber is connected with the input end of a solution circulating pump, the output end of the solution circulating pump is connected with the low-temperature solution input end of the solution heat exchanger, the solution output end of the generator is connected with the high-temperature solution input end of the solution heat exchanger, the high-temperature solution output end of the solution heat exchanger is connected with the inlet of a second throttle valve, and the outlet of the second throttle valve is connected with the input end of the absorber.
The vapor compression refrigeration subsystem includes a second condenser, a third throttle valve, a second evaporator, which is also a component of the chilled water circuit, a compressor and its associated connecting piping. In the vapor compression refrigeration subsystem, the output end of the second condenser is connected with the inlet of the third throttle valve, the outlet of the third throttle valve is connected with the input end of the second evaporator, the output end of the second evaporator is connected with the input end of the compressor, and the output end of the compressor is connected with the input end of the second condenser.
The vacuum membrane dehumidification subsystem comprises a vacuum membrane dehumidification device, a vacuum pump and related connecting pipelines. The vacuum film dehumidifying device is provided with an air return opening and an air supply opening, and a water vapor selective permeable film is arranged inside the vacuum film dehumidifying device. In the vacuum membrane dehumidification subsystem, the output end of the permeation side of the vacuum membrane dehumidification device is connected with the input end of the vacuum pump, and the output end of the vacuum pump is connected with the outside.
The cooling water circuit comprises a first condenser, an absorber and associated connecting pipes. In the cooling water loop, the water supply end of the cooling water is connected with the input end of the absorber heat exchanger, the output end of the absorber heat exchanger is connected with the input end of the first condenser heat exchanger, and the output end of the first condenser heat exchanger is connected with the backwater end of the cooling water.
The chilled water loop comprises a first evaporator, a second evaporator, a first valve, a second valve, a chilled water pump, air conditioning equipment and related connecting pipelines. In the chilled water loop, the output end of the first evaporator heat exchanger is connected with the inlet of the first valve, the outlet of the first valve is connected with the input end of air conditioning equipment, the output end of the air conditioning equipment is connected with the input end of the chilled water pump, the output end of the chilled water pump is divided into two paths, one path is connected with the inlet of the second valve, the other path is connected with the input end of the second evaporator heat exchanger, the output end of the second evaporator heat exchanger is connected with the input end of the air conditioning equipment, and the outlet of the second valve is connected with the input end of the first evaporator heat exchanger.
Further, in the system of the utility model, the solar absorption refrigeration subsystem and the vapor compression refrigeration subsystem respectively generate high-temperature chilled water with the temperature of 10-20 ℃ by the first evaporator and the second evaporator.
Furthermore, in the system, the solar absorption refrigeration subsystem assists the vapor compression refrigeration subsystem to jointly bear the sensible heat load of the building air conditioner, so that the temperature control precision of the indoor environment is improved.
Furthermore, in the system, the vacuum membrane dehumidification subsystem bears the latent heat load of the building air conditioner, and the humidity control precision of the indoor environment is improved.
Furthermore, in the system, when the solar radiation intensity is enough to drive the solar absorption refrigeration subsystem to operate, the vapor compression refrigeration subsystem can jointly bear the sensible heat load of the building air conditioner in combination with the solar absorption refrigeration subsystem; and when the solar radiation intensity is insufficient to drive the solar absorption refrigeration subsystem to operate, the sensible heat load of the building air conditioner can be independently borne, so that the problem that the vapor compression refrigeration subsystem is frequently started and stopped when the solar resource fluctuates is solved.
Furthermore, in the system, the area of the solar heat collector needs to meet the formulas (A) and (B), so that the refrigerating capacity of the solar absorption refrigeration subsystem is ensured to be smaller than the sensible heat load of the building air conditioner;
δ＝(q S -Q Eval ) min (A)
wherein:
q s sensible heat load, kW, of a building air conditioner time by time; q (Q) Eval The method comprises the steps of (1) cooling the solar absorption refrigeration subsystem at corresponding moments time by time, wherein the cooling capacity is kW; delta is the minimum value of the difference between the sensible heat load of the building air conditioner time by time and the refrigerating capacity of the solar absorption refrigerating subsystem time by time at the corresponding moment, and kW.
When the vacuum film dehumidification air-conditioning system with solar absorption refrigeration auxiliary operation is in refrigeration operation in summer, the operation of the solar absorption refrigeration subsystem is divided into two modes according to whether solar energy resources can drive the solar absorption refrigeration subsystem. When the solar energy resource can drive the solar energy absorption type refrigeration subsystem to operate, the solar energy absorption type refrigeration subsystem assists the vapor compression type refrigeration subsystem to bear the sensible heat load of the building air conditioner, and the vacuum film dehumidification subsystem bears the latent heat load of the building air conditioner; when the solar energy resource can not drive the solar energy absorption type refrigeration subsystem to operate, the vapor compression type refrigeration subsystem independently bears the sensible heat load of the building air conditioner, and the vacuum membrane dehumidification subsystem bears the latent heat load of the building air conditioner.
When the solar absorption refrigeration subsystem operates, heat collected by the solar heat collector takes hot water in a pipeline as a carrier, the hot water flows into the heat exchanger of the generator and is used for heating dilute solution entering the generator to generate refrigerant steam, the hot water after heat exchange is pumped back to the solar heat collector by the hot water, the generated high-pressure refrigerant steam flows to the first condenser, heat is taken away by the cooling water system in the first condenser, the refrigerant steam is condensed into refrigerant liquid, the condensed liquid refrigerant entering the first throttle valve is adiabatically expanded to a saturated two-phase state and finally vaporized at constant pressure in the first evaporator to absorb heat, chilled water for cooling is generated, saturated refrigerant steam exiting the first evaporator enters the absorber and is mixed with concentrated solution at constant pressure, the concentrated solution absorbs the refrigerant steam and emits heat, the heat is released by the cooling water, the dilute solution exiting the absorber is pressurized by the solution circulating pump and exchanges heat with the concentrated solution exiting the generator in the solution heat exchanger, finally the dilute solution enters the generator and is continuously heated, and is cooled to be taken away by the second throttle valve and is conveyed to the absorber at constant pressure.
When the vapor compression refrigeration subsystem operates, the liquid refrigerant in the second evaporator absorbs heat of a cooled object to boil and becomes low-temperature low-pressure refrigerant vapor, the compressor sucks the refrigerant vapor, the refrigerant vapor is compressed to improve pressure and temperature and is sent into the second condenser, the refrigerant transfers heat to the cooled object (air) in the second condenser, the high-pressure superheated refrigerant vapor is condensed into liquid, and the high-pressure liquid refrigerant is depressurized and cooled through the third throttling valve and then enters the second evaporator.
When the vacuum membrane dehumidification subsystem operates, indoor air enters the vacuum membrane dehumidification device from the air return opening, the water vapor selectively permeates the membrane to have selective permeability, under the action of the vacuum pump, partial water vapor passes through the water vapor selectively permeates the membrane and enters the vacuum pump, and the residual air of the water vapor is discharged out of the room through the vacuum pump, so that the residual air of the water vapor is reduced from entering the room from the air supply opening.
The cooling water in the cooling water loop enters the absorber heat exchanger from the input end of the absorber heat exchanger, exchanges heat with the refrigerant to absorb heat of the refrigerant, flows out of the output end of the absorber heat exchanger into the first condenser heat exchanger after the temperature is increased, exchanges heat with the refrigerant to absorb heat of the refrigerant, and flows out of the output end of the first condenser heat exchanger after the temperature is increased.
In the chilled water loop, two modes are separated according to whether the solar absorption refrigeration subsystem is operated or not. When the solar absorption refrigeration subsystem operates, the first valve and the second valve are closed, chilled water flows out from the output end of the air conditioning equipment and is sucked by the chilled water pump, the chilled water flows out after being pressurized by the chilled water pump and is divided into two paths, one path enters the first evaporator heat exchanger to exchange heat with refrigerant, the chilled water flows out from the first evaporator heat exchanger to enter the air conditioning equipment after the temperature of the chilled water is reduced, the other path enters the second evaporator heat exchanger to exchange heat with refrigerant, and the chilled water flows out from the second evaporator heat exchanger to enter the air conditioning equipment after the temperature of the chilled water is reduced. When the solar absorption refrigeration subsystem does not operate, the first valve and the second valve are opened, chilled water flows out from the output end of the air conditioning equipment and is sucked by the chilled water pump, flows out into the second evaporator heat exchanger to exchange heat with the refrigerant after being pressurized by the chilled water pump, and flows out from the second evaporator heat exchanger to enter the air conditioning equipment after the temperature of the chilled water is reduced.
(3) Advantageous effects
Compared with the prior art, the utility model has the following advantages:
the utility model provides a vacuum film dehumidification air-conditioning system with solar absorption refrigeration auxiliary operation, which realizes the utilization of solar resources in the air-conditioning system, and solves the problems of intermittence and instability of the air-conditioning system caused by fluctuation of the solar resources in combination with a vapor compression refrigeration system. On the other hand, the vacuum film dehumidification system is utilized to solve the dehumidification problem, and the unit efficiency of the solar absorption refrigeration system and the vapor compression refrigeration system is improved.
Drawings
Fig. 1 is a schematic diagram of a solar absorption refrigeration assisted vacuum film dehumidification air conditioning system according to the present utility model.
The drawings are as follows: a solar collector 1; a generator 2; a generator heat exchanger 2a; a first condenser 3; a first condenser heat exchanger 3a; a first throttle valve 4; a first evaporator 5; a first evaporator heat exchanger 5a; an absorber 6; an absorber heat exchanger 6a; a solution circulation pump 7; a second throttle valve 8; a solution heat exchanger 9; a hot water pump 10; a second condenser 11; a third throttle valve 12; a second evaporator 13; a second evaporator heat exchanger 13a; a compressor 14; a first valve 15; a second valve 16; a chilled water pump 17; an air conditioning apparatus 18; a vacuum film dehumidifying device 19; an air return port 19a; an air supply port 19b; a water vapor-selective transmission membrane 19c; a vacuum pump 20.
Detailed Description
The utility model is further described below in connection with fig. 1 and the specific embodiment.
The utility model relates to a vacuum film dehumidification air-conditioning system with solar absorption refrigeration auxiliary operation, which comprises a solar absorption refrigeration subsystem, a vapor compression refrigeration subsystem, a vacuum film dehumidification system subsystem, a cooling water loop and a chilled water loop, wherein the specific connection method comprises the following steps:
in the solar absorption refrigeration subsystem, the output end of a solar heat collector 1 is connected with the input end of a generator heat exchanger 2a, the output end of the generator heat exchanger 2a is connected with the input end of a hot water pump 10, the output end of the hot water pump 10 is connected with the input end of the solar heat collector 1, the refrigerant vapor output end of the generator 2 is connected with the input end of a first condenser 3, the output end of the first condenser 3 is connected with the inlet of a first throttle valve 4, the outlet of the first throttle valve 4 is connected with the input end of a first evaporator 5, the output end of the first evaporator 5 is connected with the refrigerant vapor input end of an absorber 6, the solution output end of the absorber 6 is connected with the input end of a solution circulating pump 7, the output end of the solution circulating pump 7 is connected with the low-temperature solution input end of the solution heat exchanger 9, the low-temperature solution output end of the generator 2 is connected with the high-temperature solution input end of the solution heat exchanger 9, the output end of the high-temperature solution heat exchanger 8 is connected with the second throttle valve 8, and the second high-temperature solution output end of the absorber 6 is connected with the second throttle valve 8.
In the vapor compression refrigeration subsystem, the output end of the second condenser 11 is connected with the inlet of the third throttle valve 12, the outlet of the third throttle valve 12 is connected with the input end of the second evaporator 13, the output end of the second evaporator 13 is connected with the input end of the compressor 14, and the output end of the compressor 14 is connected with the input end of the second condenser 11.
In the vacuum membrane dehumidification subsystem, the permeation side output end of the vacuum membrane dehumidification device 19 is connected with the input end of the vacuum pump 20, and the output end of the vacuum pump 20 is connected with the outside.
In the cooling water loop, the water supply end of the cooling water is connected with the input end of the absorber heat exchanger 6a, the output end of the absorber heat exchanger 6a is connected with the input end of the first condenser heat exchanger 3a, and the output end of the first condenser heat exchanger 3a is connected with the backwater end of the cooling water.
In the chilled water loop, the output end of the first evaporator heat exchanger 5a is connected with the inlet of the first valve 15, the outlet of the first valve 15 is connected with the input end of the air conditioning equipment 18, the output end of the air conditioning equipment 18 is connected with the input end of the chilled water pump 17, the output end of the chilled water pump 17 is divided into two paths, one path is connected with the inlet of the second valve 16, the other path is connected with the input end of the second evaporator heat exchanger 13a, the output end of the second evaporator heat exchanger 13a is connected with the input end of the air conditioning equipment 18, and the outlet of the second valve 16 is connected with the input end of the first evaporator heat exchanger 5 a.
When the vacuum film dehumidification air-conditioning system with solar absorption refrigeration auxiliary operation is in refrigeration operation in summer, the operation of the solar absorption refrigeration subsystem is divided into two modes according to whether solar energy resources can drive the solar absorption refrigeration subsystem. When the solar energy resource can drive the solar energy absorption type refrigeration subsystem to operate, the solar energy absorption type refrigeration subsystem assists the vapor compression type refrigeration subsystem to bear the sensible heat load of the building air conditioner, and the vacuum film dehumidification subsystem bears the latent heat load of the building air conditioner; when the solar energy resource can not drive the solar energy absorption type refrigeration subsystem to operate, the vapor compression type refrigeration subsystem independently bears the sensible heat load of the building air conditioner, and the vacuum membrane dehumidification subsystem bears the latent heat load of the building air conditioner.
When the solar absorption refrigeration subsystem operates, heat collected by the solar heat collector 1 takes hot water in a pipeline as a carrier, the hot water flows into the generator heat exchanger 2a and is used for heating dilute solution entering the generator 2 to generate refrigerant steam, the heat-exchanged hot water is sent back to the solar heat collector 1 by the hot water pump 10, the generated high-pressure refrigerant steam flows to the first condenser 3, heat is taken away by the cooling water system in the first condenser 3, the refrigerant steam is condensed into refrigerant liquid, the condensed liquid refrigerant entering the first throttle valve 4 is thermally expanded to a saturated two-phase state and finally vaporized at constant pressure in the first evaporator 5 to absorb heat, chilled water for cooling is generated, the saturated refrigerant steam coming out of the first evaporator 5 enters the absorber 6 to be mixed with concentrated solution at constant pressure, the concentrated solution absorbs the refrigerant steam and gives off heat, the heat is taken away by the cooling water, the dilute solution coming out of the absorber 6 is pressurized by the solution circulating pump 7 and exchanges heat with the concentrated solution coming out of the generator 2 in the solution heat exchanger 9, finally the dilute solution enters the generator 2 to be heated by the second evaporator 6 and is conveyed to the second throttle valve 8 to the second evaporator 6.
When the vapor compression refrigeration subsystem is in operation, the liquid refrigerant in the second evaporator 13 absorbs heat of an object to be cooled and boils to become low-temperature low-pressure refrigerant vapor, the compressor 14 sucks the refrigerant vapor, the refrigerant vapor is compressed to raise the pressure and the temperature and is sent to the second condenser 11, the refrigerant transfers heat to the object to be cooled (air) in the second condenser 11, the high-pressure superheated refrigerant vapor is condensed into liquid, and the high-pressure liquid refrigerant is reduced in pressure and temperature through the third throttle valve 12 and then enters the second evaporator 13.
When the vacuum membrane dehumidification subsystem operates, indoor air enters the vacuum membrane dehumidification device 19 from the air return opening 19a, the water vapor selectively permeable membrane 19c has selective permeability, under the action of the vacuum pump 20, partial water vapor passes through the water vapor selectively permeable membrane 19c and enters the vacuum pump 20 by taking the pressure difference at two sides of the membrane as driving force, and the residual air of the water vapor is discharged out of the room through the vacuum pump 20 and enters the room from the air supply opening 19 b.
The cooling water in the cooling water loop enters the absorber heat exchanger 6a from the input end of the absorber heat exchanger 6a, exchanges heat with the refrigerant in the cooling water, absorbs the heat of the refrigerant, flows out of the output end of the absorber heat exchanger 6a into the first condenser heat exchanger 3a after the temperature is increased, exchanges heat with the refrigerant in the cooling water, absorbs the heat of the refrigerant, and flows out of the output end of the first condenser heat exchanger 3a after the temperature is increased.
In the chilled water loop, two modes are separated according to whether the solar absorption refrigeration subsystem is operated or not. When the solar absorption refrigeration subsystem is operated, the first valve 15 and the second valve 16 are closed, chilled water flows out from the output end of the air conditioning equipment 18 and is sucked by the chilled water pump 17, the chilled water flows out after being pressurized by the chilled water pump 17 and is divided into two paths, one path enters the first evaporator heat exchanger 5a to exchange heat with the refrigerant, the chilled water flows out from the first evaporator heat exchanger 5a to enter the air conditioning equipment 18 after the temperature of the chilled water is reduced, the other path enters the second evaporator heat exchanger 13a to exchange heat with the refrigerant, and the chilled water flows out from the second evaporator heat exchanger 13a to enter the air conditioning equipment 18 after the temperature of the chilled water is reduced. When the solar absorption refrigeration subsystem is not in operation, the first valve 15 and the second valve 16 are opened, chilled water flows out from the output end of the air conditioning equipment 18 and is sucked by the chilled water pump 17, pressurized by the chilled water pump 17 and flows out into the second evaporator heat exchanger 13a to exchange heat with the refrigerant, and the chilled water flows out from the second evaporator heat exchanger 13a to enter the air conditioning equipment 18 after the temperature of the chilled water is reduced.
The above examples are only preferred embodiments of the present utility model, it being noted that: it will be apparent to those skilled in the art that several modifications and equivalents can be made without departing from the principles of the utility model, and such modifications and equivalents fall within the scope of the utility model.
Claims (6)
1. The vacuum membrane dehumidification air-conditioning system with the auxiliary operation of solar absorption refrigeration is characterized by comprising a solar absorption refrigeration subsystem, a vapor compression refrigeration subsystem, a vacuum membrane dehumidification subsystem, a cooling water loop and a chilled water loop;
the solar absorption refrigeration subsystem comprises a solar heat collector (1), a generator (2), a first condenser (3), a first throttle valve (4), a first evaporator (5), an absorber (6), a solution circulating pump (7), a second throttle valve (8), a solution heat exchanger (9), a hot water pump (10) and related connecting pipelines, wherein the first condenser (3) and the absorber (6) are both components of a cooling water loop, and the first evaporator (5) is also a component of a chilled water loop;
in the solar absorption refrigeration subsystem, the output end of a solar heat collector (1) is connected with the input end of a generator heat exchanger (2 a), the output end of the generator heat exchanger (2 a) is connected with the input end of a hot water pump (10), the output end of the hot water pump (10) is connected with the input end of the solar heat collector (1), the refrigerant vapor output end of the generator (2) is connected with the input end of a first condenser (3), the output end of the first condenser (3) is connected with the inlet of a first throttle valve (4), the outlet of the first throttle valve (4) is connected with the input end of a first evaporator (5), the output end of the first evaporator (5) is connected with the refrigerant vapor input end of an absorber (6), the solution output end of the absorber (6) is connected with the input end of a solution circulating pump (7), the output end of the solution circulating pump (7) is connected with the low-temperature solution input end of the solution heat exchanger (9), the low-temperature solution output end of the solution heat exchanger (9) is connected with the input end of the generator (2), the output end of the solution heat exchanger (9) is connected with the high-temperature solution output end of the solution heat exchanger (9, the outlet of the second throttle valve (8) is connected with the solution input end of the absorber (6);
the vapor compression refrigeration subsystem comprises a second condenser (11), a third throttle valve (12), a second evaporator (13), a compressor (14) and related connecting pipelines, wherein the second evaporator (13) is also a component part of a chilled water loop;
in the vapor compression refrigeration subsystem, the output end of the second condenser (11) is connected with the inlet of the third throttle valve (12), the outlet of the third throttle valve (12) is connected with the input end of the second evaporator (13), the output end of the second evaporator (13) is connected with the input end of the compressor (14), and the output end of the compressor (14) is connected with the input end of the second condenser (11);
the vacuum membrane dehumidification subsystem comprises a vacuum membrane dehumidification device (19), a vacuum pump (20) and related connecting pipelines; the vacuum membrane dehumidification subsystem is characterized in that an air return opening (19 a) and an air supply opening (19 b) are formed in the vacuum membrane dehumidification device (19), a water vapor selective permeation membrane (19 c) is arranged in the vacuum membrane dehumidification device, the output end of the permeation side of the vacuum membrane dehumidification device (19) is connected with the input end of a vacuum pump (20), and the output end of the vacuum pump (20) is connected with the outside;
the cooling water loop comprises a first condenser (3), an absorber (6) and related connecting pipelines; in the cooling water loop, the water supply end of the cooling water is connected with the input end of the absorber heat exchanger (6 a), the output end of the absorber heat exchanger (6 a) is connected with the input end of the first condenser heat exchanger (3 a), and the output end of the first condenser heat exchanger (3 a) is connected with the backwater end of the cooling water;
the chilled water loop comprises a first evaporator (5), a second evaporator (13), a first valve (15), a second valve (16), a chilled water pump (17), air conditioning equipment (18) and related connecting pipelines; in the chilled water loop, the output end of a first evaporator heat exchanger (5 a) is connected with the inlet of a first valve (15), the outlet of the first valve (15) is connected with the input end of air conditioning equipment (18), the output end of the air conditioning equipment (18) is connected with the input end of a chilled water pump (17), the output end of the chilled water pump (17) is divided into two paths, one path is connected with the inlet of a second valve (16), the other path is connected with the input end of a second evaporator heat exchanger (13 a), the output end of the second evaporator heat exchanger (13 a) is connected with the input end of the air conditioning equipment (18), and the outlet of the second valve (16) is connected with the input end of the first evaporator heat exchanger (5 a).
2. A solar absorption refrigeration assisted operation vacuum film dehumidification air conditioning system according to claim 1 wherein the solar absorption refrigeration subsystem and vapor compression refrigeration subsystem generate high temperature chilled water of 10 ℃ to 20 ℃ from the first evaporator (5) and the second evaporator (13), respectively.
3. The solar absorption refrigeration assisted operation vacuum film dehumidification air conditioning system of claim 1, wherein the solar absorption refrigeration subsystem assists the vapor compression refrigeration subsystem to jointly bear the sensible heat load of the building air conditioner.
4. A solar absorption refrigeration assisted operation vacuum membrane dehumidification air conditioning system as defined in claim 1 wherein said vacuum membrane dehumidification subsystem is configured to carry building air conditioning latent heat loads.
5. The solar absorption refrigeration assisted operation vacuum film dehumidification air conditioning system according to claim 1, wherein the vapor compression refrigeration subsystem can jointly bear the sensible heat load of the building air conditioner in combination with the solar absorption refrigeration subsystem when the solar radiation intensity is enough to drive the solar absorption refrigeration subsystem to operate; and the sensible heat load of the building air conditioner can be independently borne when the solar radiation intensity is insufficient to drive the solar absorption refrigeration subsystem to operate.
6. The solar absorption refrigeration assisted operation vacuum film dehumidification air conditioning system according to claim 1, wherein the area of the solar heat collector (1) needs to satisfy formula (a) and formula (B):
δ＝(q S -Q Eva1 ) min (A)
wherein:
q s sensible heat load, kW, of a building air conditioner time by time; q (Q) Eval The method comprises the steps of (1) cooling the solar absorption refrigeration subsystem at corresponding moments time by time, wherein the cooling capacity is kW; delta is the minimum value of the difference between the sensible heat load of the building air conditioner time by time and the refrigerating capacity of the solar absorption refrigerating subsystem time by time at the corresponding moment, and kW.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222787671.XU CN218936541U (en) | 2022-10-21 | 2022-10-21 | Vacuum film dehumidification air conditioning system with solar absorption refrigeration auxiliary operation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222787671.XU CN218936541U (en) | 2022-10-21 | 2022-10-21 | Vacuum film dehumidification air conditioning system with solar absorption refrigeration auxiliary operation |
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| CN202222787671.XU Active CN218936541U (en) | 2022-10-21 | 2022-10-21 | Vacuum film dehumidification air conditioning system with solar absorption refrigeration auxiliary operation |
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2022
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