CN114768490A - Composite dehumidification system based on transcritical carbon dioxide heat pump regeneration and application - Google Patents
Composite dehumidification system based on transcritical carbon dioxide heat pump regeneration and application Download PDFInfo
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- CN114768490A CN114768490A CN202210218063.9A CN202210218063A CN114768490A CN 114768490 A CN114768490 A CN 114768490A CN 202210218063 A CN202210218063 A CN 202210218063A CN 114768490 A CN114768490 A CN 114768490A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 136
- 238000007791 dehumidification Methods 0.000 title claims abstract description 96
- 230000008929 regeneration Effects 0.000 title claims abstract description 83
- 238000011069 regeneration method Methods 0.000 title claims abstract description 83
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 68
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 68
- 239000002131 composite material Substances 0.000 title claims abstract description 13
- 230000002745 absorbent Effects 0.000 claims abstract description 15
- 239000002250 absorbent Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 12
- 239000002274 desiccant Substances 0.000 claims description 9
- 238000009529 body temperature measurement Methods 0.000 claims description 7
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 description 7
- 230000001172 regenerating effect Effects 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
- F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Gases (AREA)
Abstract
The invention relates to a composite dehumidification system based on transcritical carbon dioxide heat pump regeneration, which comprises a transcritical carbon dioxide heat pump and a dehumidification rotating wheel, wherein the transcritical carbon dioxide heat pump is connected with the dehumidification rotating wheel; the wet air is condensed and dehumidified by the cold end of the trans-critical carbon dioxide heat pump, enters a dehumidifying area of the dehumidifying runner, is adsorbed and dehumidified and is discharged; and the regenerated air is heated by the hot end of the trans-critical carbon dioxide heat pump and then enters the regeneration area of the dehumidification rotating wheel to realize the regeneration of the moisture absorbent. The application of the composite dehumidification system based on the transcritical carbon dioxide heat pump regeneration in air dehumidification is also related. According to the invention, the transcritical carbon dioxide heat pump and the dehumidifying rotating wheel are combined, the evaporator and the dehumidifying rotating wheel of the transcritical carbon dioxide heat pump are respectively used for condensing the humid air and carrying out rotating wheel combined dehumidification, and meanwhile, the high-temperature heat energy of the transcritical carbon dioxide heat pump is used for heating the regenerated air of the rotating wheel, so that deep dehumidification in a high-humidity environment is realized, and the problems of insufficient efficiency and low coupling of the traditional dehumidifying system are effectively solved.
Description
Technical Field
The invention relates to the technical field of deep dehumidification, in particular to a composite dehumidification system based on transcritical carbon dioxide heat pump regeneration and application thereof.
Background
The heat pump is a device capable of efficiently collecting heat and transferring heat, and the heat pump transfers the heat from low temperature to medium and high temperature by consuming a small amount of high-grade energy and then performing thermodynamic cycle, so that the heat pump has an obvious energy-saving effect and has important significance for reasonably utilizing the energy. The transcritical carbon dioxide heat pump has the characteristic of large temperature slippage due to the characteristic of transcritical circulation, and has the performance superior to that of a conventional heat pump in the aspect of supplying high-temperature heat energy.
In the air, the volume ratio of the water vapor is generally 0.01% -0.03%, and although the water vapor content is very low, the humidity greatly influences the thermal comfort of the human body and the production process in the industry. In the industrial field, moist air can cause considerable harm, and in the fields of medical treatment, precision instruments, etc., the control of humidity is more stringent. The dehumidification technology mainly comprises condensation dehumidification, solution dehumidification, rotary wheel dehumidification and membrane dehumidification. In the prior art, a conventional dehumidification system usually adopts a single dehumidification mode and cannot meet the deep dehumidification requirement, and the defects of poor adaptability, limited dehumidification range, low efficiency and the like exist in the process of facing a high-humidity environment.
At present, the industrial field mostly adopts a rotating wheel dehumidification technology to meet the regulation and control requirement of air humidity. The traditional rotary wheel dehumidification technology has the characteristics of large dehumidification capacity, no corrosiveness and the like, but the rotary wheel dehumidification technology has the defects of high quality of required regenerated heat sources, expensive equipment with unit dehumidification capacity, large regeneration energy consumption, low economy and the like.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a composite dehumidification system based on transcritical carbon dioxide heat pump regeneration and application thereof, aiming at reducing dehumidification energy consumption and improving dehumidification energy efficiency.
The technical scheme adopted by the invention is as follows:
in one aspect of the invention, a composite dehumidifying system based on transcritical carbon dioxide heat pump regeneration is provided, which comprises a transcritical carbon dioxide heat pump and a dehumidifying rotating wheel;
the wet air is condensed and dehumidified by the cold end of the trans-critical carbon dioxide heat pump, enters the dehumidification area of the dehumidification rotating wheel, is adsorbed and dehumidified and is discharged;
and the regenerated air is heated by the hot end of the trans-critical carbon dioxide heat pump and then enters the regeneration area of the dehumidification rotating wheel to realize the regeneration of the moisture absorbent.
The further technical scheme is as follows:
the temperature of the regenerated air is measured and filtered, and then the regenerated air is heated and heated by the hot end of the trans-critical carbon dioxide heat pump, the temperature of the heated air is measured, if the temperature meets the regeneration requirement of the moisture absorbent, the heated air directly enters the regeneration area of the dehumidifying rotating wheel, and if the temperature does not meet the regeneration requirement of the moisture absorbent, the heated air is secondarily heated and then enters the regeneration area of the dehumidifying rotating wheel to realize the regeneration of the moisture absorbent.
And an auxiliary regeneration heater is arranged at the inlet end of the regeneration area of the dehumidification rotating wheel and is used for secondarily heating air which does not meet the regeneration requirement of the moisture absorbent.
And a regeneration fan is arranged at the outlet end of the regeneration zone of the dehumidification rotating wheel.
The wet air is subjected to temperature measurement and filtration, then condensed and dehumidified by the cold end of the trans-critical carbon dioxide heat pump, enters the dehumidification area of the dehumidification rotating wheel, is subjected to adsorption dehumidification, and is discharged after temperature measurement.
And a treatment fan is arranged at the outlet end of the dehumidification area of the dehumidification rotating wheel.
The transcritical carbon dioxide heat pump comprises an evaporator, a heat regenerator, a gas-liquid separator, a compressor, a gas cooler, an expansion valve and a liquid storage device;
refrigerant carbon dioxide is compressed by the compressor to form transcritical high-temperature gas, the regenerated air is heated by the gas cooler, the cooled carbon dioxide gas is further supercooled by the heat regenerator, then is throttled by the expansion valve to be in a low-pressure two-phase state, then enters the evaporator through the liquid storage device to generate refrigeration, the humid air is cooled to below dew point temperature for condensation and dehumidification, then is subjected to heat absorption by the heat regenerator, and finally is separated by the gas-liquid separator, and then enters the compressor again to complete transcritical circulation of the carbon dioxide.
In another aspect of the invention, the application of the composite dehumidification system based on transcritical carbon dioxide heat pump regeneration in air dehumidification is provided.
The invention has the following beneficial effects:
aiming at the deep dehumidification requirement and the defect of high energy consumption of the conventional dehumidification mode, the transcritical carbon dioxide heat pump and the dehumidification rotating wheel are combined, the evaporator and the dehumidification rotating wheel of the transcritical carbon dioxide heat pump are respectively utilized to condense and compositely dehumidify the humid air, and meanwhile, the high-temperature heat energy of the transcritical carbon dioxide heat pump is utilized to heat the regenerated air of the rotating wheel, so that the deep dehumidification in a high-humidity environment is realized, and the problems of insufficient efficiency and low coupling of the traditional dehumidification system are effectively solved. The invention also has the following advantages:
the condensation and the runner are used for combined dehumidification, the requirement of deep dehumidification is met, and the humidity processing range and the adaptability of a dehumidification system are widened;
by using the refrigerant carbon dioxide transcritical circulation, the low-temperature cold energy and the high-temperature heat energy of the carbon dioxide heat pump system are fully utilized, the regeneration energy consumption is reduced, and the dehumidification energy efficiency is greatly improved;
the total energy consumption and the total investment of the system under the same dehumidification capacity are reduced through the combined operation of the composite system.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
In the figure: 1. a first temperature and humidity sensor; 2. a first filter; 3. an evaporator; 4. a heat regenerator; 5. a gas-liquid separator; 6. a compressor; 7. a gas cooler; 8. an expansion valve; 9. a reservoir; 10. a dehumidifying wheel; 11. a dehumidification zone; 12. a regeneration zone; 13. a second temperature and humidity sensor; 14. a processing fan; 15. a third temperature and humidity sensor; 16. a second filter; 17. a fourth temperature and humidity sensor; 18. an auxiliary regenerative heater; 19. and a regenerative fan.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the composite dehumidification system based on transcritical carbon dioxide heat pump regeneration of the present embodiment includes a transcritical carbon dioxide heat pump and a desiccant rotor 10;
the wet air is condensed and dehumidified by the cold end of the trans-critical carbon dioxide heat pump, enters the dehumidifying area 11 of the dehumidifying runner 10, is adsorbed and dehumidified and is discharged;
the regenerated air is heated by the hot end of the transcritical carbon dioxide heat pump and enters the regeneration area 12 of the dehumidification rotating wheel 10 to realize the regeneration of the moisture absorbent.
Specifically, the cold end of the transcritical carbon dioxide heat pump is connected with the inlet of the dehumidifying area 11, and the outlet of the dehumidifying area 11 is connected with the environment with dehumidifying requirement through pipelines; the hot end of the trans-critical carbon dioxide heat pump is respectively connected with the inlet of the regeneration area 12, the outlet of the regeneration area 12 and the external environment through pipelines.
In the above embodiment, the inlet end of the cold end of the transcritical carbon dioxide heat pump is provided with the first temperature and humidity sensor 1 and the first filter 2, and the outlet end of the dehumidification region 11 of the dehumidification rotating wheel 10 is provided with the second temperature and humidity sensor 13 and the processing fan 14.
Driven by the processing fan 14, the humid air is subjected to temperature measurement by the first temperature and humidity sensor 1 and filtration by the first filter 2, then is subjected to condensation dehumidification by the cold end of the transcritical carbon dioxide heat pump, enters the dehumidification area 11 of the dehumidification rotating wheel 10, is subjected to adsorption dehumidification, and is subjected to temperature measurement by the second temperature and humidity sensor 13 and then is discharged.
In the above embodiment, the inlet end of the hot end of the transcritical carbon dioxide heat pump is provided with the third temperature and humidity sensor 15 and the second filter 16, the outlet end of the hot end of the transcritical carbon dioxide heat pump is provided with the fourth temperature and humidity sensor 17, the inlet end of the regeneration zone 12 of the desiccant rotor 10 is provided with the auxiliary regeneration heater 18, and the inlet end of the regeneration zone 12 is provided with the regeneration fan 19.
Under the drive of a regeneration fan 19, the temperature of the regeneration air is measured by a third temperature and humidity sensor 15 and filtered by a second filter 16, then the regeneration air is heated and heated by the hot end of a trans-critical carbon dioxide heat pump, the temperature of the heated air is measured by a fourth temperature and humidity sensor 17, whether the temperature of the regeneration air meets the regeneration requirement of the rotating wheel is monitored by the fourth temperature and humidity sensor 17, if the temperature of the regeneration air meets the requirement, an auxiliary regeneration heater 18 is turned off, the regeneration air directly passes through a regeneration area 12, the temperature of the regeneration air is reduced and the humidity of the regeneration air is increased after the moisture in the silica gel moisture absorbent of the rotating wheel is absorbed, and finally the regeneration air is discharged to the external environment; if the temperature of the regeneration air cannot meet the regeneration requirement of the rotating wheel, the auxiliary regeneration heater 18 is started, the regeneration air passes through the fourth temperature and humidity sensor 17 and is heated to the required regeneration temperature by the auxiliary regeneration heater 18, passes through the regeneration zone 12, and after moisture in the silica gel moisture absorbent of the rotating wheel is absorbed, the temperature and the humidity of the regeneration air are reduced and increased, and finally the regeneration air is discharged to the external environment.
In the above embodiment, the transcritical carbon dioxide heat pump includes the evaporator 3, the heat regenerator 4, the gas-liquid separator 5, the compressor 6, the gas cooler 7, the expansion valve 8 and the liquid reservoir 9.
Refrigerant carbon dioxide is compressed by a compressor 6 to form transcritical high-temperature gas, the regenerated air is heated by a gas cooler 7, the cooled carbon dioxide gas is further supercooled by a heat regenerator 4, then is throttled by an expansion valve 8 to be in a low-pressure two-phase state, enters an evaporator 3 through a liquid storage device 9 to generate refrigeration, the humid air is cooled to below the dew point temperature for condensation and dehumidification, then is subjected to heat absorption by the heat regenerator 4, and finally enters the compressor 6 again after being separated by a gas-liquid separator 5, so that transcritical circulation of the carbon dioxide is completed.
Namely, the gas cooler 7 is used as the hot end of the transcritical carbon dioxide heat pump to heat the regeneration air, the evaporator 3 is used as the cold end of the transcritical carbon dioxide heat pump to cool the wet air to below the dew point temperature, and water vapor which is larger than the saturated moisture content is separated out, so that the absolute moisture content of the wet air is reduced, and the purpose of high-efficiency dehumidification is achieved.
In the above embodiment, the desiccant rotor 10 is driven by the driving device to rotate, and the desiccant on the rotor is silica gel desiccant. The area ratio of the dehumidification region 11 and the regeneration region 12 of the dehumidification rotor 10 is preferably 7: 3.
the desiccant rotor 10 is rotated continuously during the process of dehumidification, and is transferred to the regeneration zone for regeneration after the silica gel desiccant becomes saturated. After being heated by the gas cooler 7 (and the auxiliary regenerative heater 18 if necessary), the regenerative air enters the regeneration area, the water in the absorbent is desorbed in a high-temperature state, the temperature of the regenerative air is reduced, the humidity is increased, and finally the regenerative air is discharged to the outside of the system. The high-temperature heat energy is fully utilized through the transcritical carbon dioxide heat pump, the energy consumption of regenerative heating is reduced, and through the mode, the moisture absorption and drying processes of the moisture absorbent are carried out repeatedly.
This application requires to degree of depth dehumidification and current conventional dehumidification mode energy consumption is high not enough, with the compound dehumidification system that condensation dehumidification and runner dehumidification combined together, can carry out the degree of depth dehumidification of the big amount of wind, and the dehumidification scope is wide, and the dehumidification is efficient. Compared with the traditional dehumidification system, the high-temperature heat energy of the trans-critical carbon dioxide heat pump is fully utilized, and the system energy efficiency is further improved.
The embodiment of the application also provides an application of the composite dehumidification system based on transcritical carbon dioxide heat pump regeneration in air dehumidification.
Those of ordinary skill in the art will understand that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A composite dehumidification system based on transcritical carbon dioxide heat pump regeneration is characterized by comprising a transcritical carbon dioxide heat pump and a dehumidification rotating wheel (10);
the wet air is condensed and dehumidified by the cold end of the trans-critical carbon dioxide heat pump, enters a dehumidifying area (11) of a dehumidifying runner (10), is adsorbed and dehumidified and is discharged;
the regeneration air is heated by the hot end of the trans-critical carbon dioxide heat pump and enters the regeneration area (12) of the dehumidification rotating wheel (10) to realize the regeneration of the moisture absorbent.
2. The composite dehumidification system based on transcritical carbon dioxide heat pump regeneration of claim 1, wherein the regenerated air is subjected to temperature measurement and filtration, then heated by the hot end of the transcritical carbon dioxide heat pump to increase the temperature, the temperature of the heated air is measured again, if the temperature meets the regeneration requirement of the moisture absorbent, the heated air directly enters the regeneration area (12) of the dehumidification rotating wheel (10), and if the temperature does not meet the regeneration requirement of the moisture absorbent, the heated air is secondarily heated and then enters the regeneration area (12) of the dehumidification rotating wheel (10) to realize the regeneration of the moisture absorbent.
3. The hybrid dehumidification system based on transcritical carbon dioxide heat pump regeneration of claim 2, wherein an inlet end of the regeneration zone (12) of the desiccant rotor (10) is provided with an auxiliary regeneration heater (18) for secondary heating of air that does not meet the regeneration requirement of the desiccant.
4. The hybrid dehumidification system based on transcritical carbon dioxide heat pump regeneration of claim 3, wherein an outlet end of the regeneration zone (12) of the desiccant rotor (10) is provided with a regeneration fan (19).
5. The combined dehumidification system based on transcritical carbon dioxide heat pump regeneration of claim 1, wherein the humid air is subjected to temperature measurement and filtration, then is subjected to condensation dehumidification at the cold end of the transcritical carbon dioxide heat pump, then enters the dehumidification region (11) of the dehumidification rotating wheel (10), is subjected to adsorption dehumidification, and then is discharged after temperature measurement.
6. The hybrid dehumidification system based on transcritical carbon dioxide heat pump regeneration of claim 5, wherein an outlet end of the dehumidification region (11) of the rotary desiccant wheel (10) is provided with a process fan (14).
7. The hybrid dehumidification system based on transcritical carbon dioxide heat pump regeneration of claim 1, wherein the transcritical carbon dioxide heat pump comprises an evaporator (3), a heat regenerator (4), a gas-liquid separator (5), a compressor (6), a gas cooler (7), an expansion valve (8) and a reservoir (9);
refrigerant carbon dioxide is compressed by the compressor (6) to form transcritical high-temperature gas, the regeneration air is heated by the gas cooler (7), the cooled carbon dioxide gas is further subcooled by the heat regenerator (4), then is throttled by the expansion valve (8) to be changed into a low-pressure two-phase state, enters the evaporator (3) through the liquid storage device (9) to generate refrigeration, the humid air is cooled to below a dew point temperature to be condensed and dehumidified, then absorbs heat by the heat regenerator (4), and finally is separated by the gas-liquid separator (5), the carbon dioxide gas enters the compressor (6) again to complete transcritical circulation of the carbon dioxide.
8. Use of a hybrid dehumidification system based on transcritical carbon dioxide heat pump regeneration according to claims 1 to 7 for air dehumidification.
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| CN202210218063.9A CN114768490A (en) | 2022-03-08 | 2022-03-08 | Composite dehumidification system based on transcritical carbon dioxide heat pump regeneration and application |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210218063.9A CN114768490A (en) | 2022-03-08 | 2022-03-08 | Composite dehumidification system based on transcritical carbon dioxide heat pump regeneration and application |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587863A (en) * | 2004-09-29 | 2005-03-02 | 上海交通大学 | Over critical CO2 refrigeration and rotary wheel dehumidifying combined air conditioning system |
| JP2007187386A (en) * | 2006-01-13 | 2007-07-26 | Hitachi Plant Technologies Ltd | Dehumidification air conditioning system |
| CN107477730A (en) * | 2017-09-20 | 2017-12-15 | 浙江大学 | A kind of adsorption runner and Trans-critical cycle heat pump cycle composite gas purifier and application |
| CN113375382A (en) * | 2021-06-29 | 2021-09-10 | 南京东达智慧环境能源研究院有限公司 | System for preparing fluid ice by dehumidification and evaporation of rotating wheel driven by transcritical carbon dioxide heat pump |
-
2022
- 2022-03-08 CN CN202210218063.9A patent/CN114768490A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587863A (en) * | 2004-09-29 | 2005-03-02 | 上海交通大学 | Over critical CO2 refrigeration and rotary wheel dehumidifying combined air conditioning system |
| JP2007187386A (en) * | 2006-01-13 | 2007-07-26 | Hitachi Plant Technologies Ltd | Dehumidification air conditioning system |
| CN107477730A (en) * | 2017-09-20 | 2017-12-15 | 浙江大学 | A kind of adsorption runner and Trans-critical cycle heat pump cycle composite gas purifier and application |
| CN113375382A (en) * | 2021-06-29 | 2021-09-10 | 南京东达智慧环境能源研究院有限公司 | System for preparing fluid ice by dehumidification and evaporation of rotating wheel driven by transcritical carbon dioxide heat pump |
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