CN109520167A - A kind of multistage folding type cooling system for large-size air conditioning system - Google Patents
A kind of multistage folding type cooling system for large-size air conditioning system Download PDFInfo
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- CN109520167A CN109520167A CN201910000585.XA CN201910000585A CN109520167A CN 109520167 A CN109520167 A CN 109520167A CN 201910000585 A CN201910000585 A CN 201910000585A CN 109520167 A CN109520167 A CN 109520167A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 50
- 238000001816 cooling Methods 0.000 title claims abstract description 38
- 239000003507 refrigerant Substances 0.000 claims abstract description 85
- 238000005057 refrigeration Methods 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000008676 import Effects 0.000 claims description 38
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 36
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 18
- 239000001569 carbon dioxide Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 17
- 230000005494 condensation Effects 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 5
- 239000006200 vaporizer Substances 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/006—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant containing more than one component
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
-
- 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
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
- F25B9/008—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant the refrigerant being carbon dioxide
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The present invention provides a kind of multistage folding type cooling system for large-size air conditioning system, which includes super low temperature refrigeration system, cryogenic refrigerating system, conventional refrigerant system, water system, air conditioning terminal, super low temperature refrigeration system and cryogenic refrigerating system heat exchange；Cryogenic refrigerating system and super low temperature refrigeration system exchange heat after respectively with air conditioning terminal or several be equipped with conventional refrigerant system heat exchanges of different refrigeration working mediums；Conventional refrigerant system and cryogenic refrigerating system heat exchange after respectively with several air conditioning terminal heat exchanges；The air conditioning terminal is through water system circulation cooling.The beneficial effects of the present invention are: between each subsystem can selective connection as needed, and repeatedly exchanged heat, realize the cascade utilization of refrigerating capacity, meet the needs of different building subregions and multi-use architecture are to different cryogenic temperatures.
Description
Technical field
The invention belongs to refrigerating field, specially a kind of multistage folding type cooling system for large-size air conditioning system.
Background technique
Due to hydrochlorofluorocarbons class refrigerant, it will lead to the various environmental problems such as greenhouse effects, be unsatisfactory for wanting for Green Development
It asks, with the promulgation of " Montreal Protocol ", substitute materials and the associated refrigeration technology for studying HCFCs are extremely urgent.
Carbon dioxide is as a kind of environment friendly refrigerating fluid, GWP global warming potential=1, ODP depletion of the ozone layer potential
=0, the about one thousandth of R134a refrigerant, R22 refrigerant, in addition its kinematic viscosity is low, compression ratio is low, unit volume system
Cooling capacity is high, and refrigerating effect per unit swept volume is 1.58 times of ammonia at 0 DEG C, is 5.12 times of R22 refrigerant, is the 8.25 of R12 refrigerant
Times, there is good heat transfer property, moreover, it is nontoxic, harmless, non-ignitable, not quick-fried, there is good environmental protection characteristic.However, due to its system
Cold work is frequently experienced in Trans-critical cycle or subcritical region, and operating pressure is higher, poor safety performance, to sealing requirements height, no
Energy long distance delivery, constrains it in the large-scale application of refrigerating field.
Summary of the invention
For the defect of the prior art functionally, the object of the present invention is to provide a kind of multistages for large-size air conditioning system
Folding type cooling system can solve current carbon dioxide coolant and exist when making its super low temperature refrigeration agent using carbon dioxide
Trans-critical cycle or security risk and long distance delivery problem in subcritical refrigerant region, realize the cascade utilization of refrigerating capacity, meet
Each subregion or multi-use architecture built is to the needs of different cryogenic temperatures.
To achieve the above object, The technical solution adopted by the invention is as follows: a kind of multistage for large-size air conditioning system is multiple
Stacked refrigeration system, including initial super low temperature refrigeration system, cryogenic refrigerating system, conventional refrigerant system, water system, air-conditioning end
End.
The super low temperature refrigeration system include connect the first condenser/evaporator of cryogenic refrigerating system, the first oil eliminator,
First compressor, cryogenic vaporizer, first throttle valve, the first refrigerant shut-off valve, the first solenoid valve, the first liquid storage device.
The cryogenic refrigerating system includes the first condenser/evaporator for connecting super low temperature refrigeration system, connection cryogenic refrigeration system
The second condenser/evaporator, the second oil eliminator, the second compressor, medium temperature evaporator, second throttle, the first condensation evaporation of system
Device, third throttle valve, third refrigerant shut-off valve, the second refrigerant shut-off valve, second solenoid valve, the second liquid storage device.
The conventional refrigerant system includes cooler, third oil eliminator, third compressor, high-temperature evaporator, Section four
Flow valve, the 5th throttle valve, the 5th refrigerant shut-off valve, the 4th refrigerant shut-off valve, third solenoid valve, third liquid storage device, the second condensation
Evaporator.
The solutions for refrigeration that main system is realized: super low temperature refrigeration system once exchange heat with cryogenic refrigerating system thereafter real
Existing cascade refrigeration, can be obtained ultralow temperature, and -55 DEG C~-25 DEG C of temperature range；Cryogenic refrigerating system and conventional refrigerant system thereafter
System carries out secondary heat exchange, can be obtained -25 DEG C~-10 DEG C of lower temperature；Conventional refrigerant is exchanged heat three times with water, can be obtained low
- 10~10 DEG C of temperature；Water at low temperature and air conditioning terminal carry out end heat exchange, and final comfort air conditioning system required temperature 15 DEG C~25 can be obtained
℃。
Refrigeration working medium is recommended to use carbon dioxide coolant in the super low temperature refrigeration system, low-temperature level is used as, with institute
The refrigeration working medium stated in low-temperature level refrigeration system realizes cascade refrigeration.The system can be concentrated and be controlled far from anthropic zone
Tubulation reason, reduces security risk.
Refrigeration working medium range of choice in the conventional refrigerant system and cryogenic refrigerating system is wider, can be according to refrigerating capacity
Demand selected.
The water system can exchange heat from different refrigeration working mediums, obtain different refrigerating capacitys, in addition can pass through variable frequency pump
Water flow is controlled, the needs of different building subregions are met.
The air conditioning terminal can satisfy different buildings by the cascade utilization of refrigerating capacity mainly from each building subregion
Refrigerating capacity needed for subregion.
On the other hand, a kind of multistage folding type cooling system for large-size air conditioning system of the present invention removes main system and is realized
Solutions for refrigeration outside, can by change participate in the sequence of refrigeration system, in water system selection of flow, refrigeration working medium of water etc. because
Element obtains the refrigeration system of different mode, to meet the needs of different building subregions are to refrigerating capacity, specific auxiliary system is such as
Under:
(1) one component part of auxiliary system: super low temperature refrigeration system, cryogenic refrigerating system, conventional refrigerant system, air-conditioning end
End.
(2) two component part of auxiliary system: super low temperature refrigeration system, cryogenic refrigerating system, water system, air conditioning terminal.
(3) three component part of auxiliary system: super low temperature refrigeration system, cryogenic refrigerating system, air conditioning terminal.
(5) four component part of auxiliary system: cryogenic refrigerating system, conventional refrigerant system, water system, air conditioning terminal.
(6) five component part of auxiliary system: cryogenic refrigerating system, conventional refrigerant system, air conditioning terminal.
(7) six component part of auxiliary system: conventional refrigerant system, water system, air conditioning terminal.
(8) seven component part of auxiliary system: cryogenic refrigerating system, water system, air conditioning terminal.
(9) eight component part of auxiliary system: conventional refrigerant system, air conditioning terminal.
The course of work of subsystems is similar with its described course of work in main system in the auxiliary system.
Effect of the invention is:
(1) the super low temperature refrigeration system realized of the present invention is when making its refrigerant using carbon dioxide, i.e. carbon dioxide
Transcritical cooling system, while obtaining lower cryogenic temperature and larger refrigerating capacity, the management control that can be concentrated,
Refrigerant is not required to long-distance sand transport, but by multistage overlapping, it realizes the utilization to refrigerating capacity, reduces corresponding security risk.
(2) present invention can flexibly change the combination of each subsystem according to the different demands to refrigerating capacity, pass through each system
Multiple heat exchange between system, realizes the cascade utilization of energy, meets the needs of different building subregions are to refrigerating capacity.
(3) the subcritical carbon dioxide folding type cooling system realized of the present invention, can as needed with refrigeration not of the same race
Working medium carries out cascade refrigeration, and obtained refrigeration temperature levels are wider.
(5) water system in the present invention is controlled by variable frequency pump, can be exchanged heat from different refrigeration working mediums, be obtained different systems
Cooling capacity.
Detailed description of the invention
Fig. 1 is one composition schematic diagram of main system of the invention；
Fig. 2 is two composition schematic diagram of main system of the invention；
Fig. 3 is three composition schematic diagram of main system of the invention；
Fig. 4 is one composition schematic diagram of auxiliary system of the invention；
Fig. 5 is three composition schematic diagram of auxiliary system of the invention；
Fig. 6 is eight composition schematic diagram of auxiliary system of the invention；
Fig. 7 is CO 2 cross-critical refrigeration system of the invention；
Fig. 8 is subcritical carbon dioxide folding type cooling system of the invention；
Fig. 9 is three-level folding type cooling system of the invention；
Figure 10 is principal series unified flow figure of the invention；
Figure 11 is one flow chart of auxiliary system of the invention；
Figure 12 is three flow chart of auxiliary system of the invention；
Figure 13 is eight flow chart of auxiliary system of the invention.
In figure:
1. 2. first oil eliminator of first gas cooler
3. 4. cryogenic vaporizer of the first compressor
5. 6. first refrigerant shut-off valve of first throttle valve
7. 8. first liquid storage device of the first solenoid valve
9. 10. second oil eliminator of second gas cooler
11. 12. medium temperature evaporator of the second compressor
13. 14. first condenser/evaporator of second throttle
15. 16. third refrigerant shut-off valve of third throttle valve
17. 18. second solenoid valve of the second refrigerant shut-off valve
19. 20. condenser of the second liquid storage device
21. 22. third compressor of third oil eliminator
23. the 4th throttle valve of high-temperature evaporator 24.
25. the 5th refrigerant shut-off valve of the 5th throttle valve 26.
27. 28. third solenoid valve of the 4th refrigerant shut-off valve
29. 30. second condenser/evaporator of third liquid storage device
31. the outlet one of one 32. first condenser/evaporator of import of the first condenser/evaporator
33. the outlet two of 2 34. first condenser/evaporator of import of the first condenser/evaporator
35. the outlet one of one 36. second condenser/evaporator of import of the second condenser/evaporator
37. the outlet two of 2 38. second condenser/evaporator of import of the second condenser/evaporator
Specific embodiment
Make in conjunction with the attached drawing multistage folding type cooling system for large-size air conditioning system a kind of to the present invention further detailed
Explanation.
The present invention is a kind of multistage folding type cooling system for large-size air conditioning system, realizes the step benefit of refrigerating capacity
With, both can to different urban pipe networks convey refrigerating capacity, it can also be used in addition the building of sophisticated functions is made using carbon dioxide
When its super low temperature refrigeration agent, concentrated controling management is done to its high-pressure section, far from human activity area, carbon dioxide is solved and is used as
When refrigerant, since operating pressure is higher, a series of and safety problems that generate more stringent to sealing requirements.
As shown in FIG. 1 to 3, a kind of multistage folding type cooling system for large-size air conditioning system includes super low temperature refrigeration
System, cryogenic refrigerating system, conventional refrigerant system, water system, air conditioning terminal, the super low temperature refrigeration system and cryogenic refrigeration system
System heat exchange；Cryogenic refrigerating system and super low temperature refrigeration system exchange heat after respectively with air conditioning terminal or several be equipped with different refrigeration
The conventional refrigerant system heat exchange of working medium；Conventional refrigerant system and cryogenic refrigerating system heat exchange after respectively with several air conditioning terminals
Heat exchange；The air conditioning terminal is through water system circulation cooling.
Concrete function is achieved in that
In main system one shown in FIG. 1, super low temperature refrigeration system is once exchanged heat with cryogenic refrigerating system, realizes Asia
Critical carbon dioxide cascade refrigeration.Cryogenic refrigerating system and conventional refrigerant system carry out secondary heat exchange, conventional refrigerant system with
Water is exchanged heat three times, and water and air conditioning terminal carry out end heat exchange, realizes the cascade utilization of energy.
In main system two shown in Fig. 2, super low temperature refrigeration system is once exchanged heat with cryogenic refrigerating system, cryogenic refrigeration
Agent carries out secondary heat exchange from different conventional refrigerants respectively and makes after obtaining different refrigerating capacitys according in conventional refrigerant system
The physical property of cryogen, changes the flow of water system using variable frequency pump, so that different conventional refrigerants be made to exchange heat from different waters
It is delivered to the building subregion of different function respectively afterwards.
In main system three shown in Fig. 3, super low temperature refrigeration system is once exchanged heat with cryogenic refrigerating system, cryogenic refrigeration
System and conventional refrigerant system carry out secondary heat exchange, and conventional refrigerant system can be exchanged heat three times with the water of different flow, be obtained
Different refrigerating capacitys is delivered to the building subregion of different function respectively.
As shown in Fig. 4~Fig. 6, a kind of multistage folding type cooling system for large-size air conditioning system can in addition to main system
By changing the matching order between subsystems, multiple auxiliary systems are set, and concrete function is achieved in that
In auxiliary system one shown in Fig. 4, super low temperature refrigeration system is once exchanged heat with cryogenic refrigerating system, low temperature system
Cooling system and conventional refrigerant system carry out secondary heat exchange, and conventional refrigerant system and air conditioning terminal carry out end heat exchange, can meet more
Demand of the functional architecture to refrigerating capacity.
In auxiliary system three shown in fig. 5, super low temperature refrigeration system is once exchanged heat with cryogenic refrigerating system, low temperature system
Cooling system and air conditioning terminal carry out end heat exchange, can meet the needs of multi-use architecture is to refrigerating capacity.
In auxiliary system eight shown in fig. 6, conventional refrigerant system and air conditioning terminal carry out end heat exchange, can meet multi-functional
Build the demand to refrigerating capacity.
As shown in fig. 7~fig. 9, a kind of multistage folding type cooling system for large-size air conditioning system, son therein
System --- super low temperature refrigeration system, cryogenic refrigerating system, conventional refrigerant system is completed not by the opening and closing of refrigerant shut-off valve
Same refrigeration cycle, concrete function are achieved in that
Super low temperature refrigeration system shown in Fig. 7, i.e. CO 2 cross-critical refrigeration system open the first refrigerant shut-off valve 6,
Close the second refrigerant shut-off valve 17, third refrigerant shut-off valve 16, the 4th refrigerant shut-off valve 27, the 5th refrigerant shut-off valve 26.
The outlet of the first gas cooler 1 of super low temperature refrigeration system connects the import of the first liquid storage device 8；First liquid storage
The outlet of device 8 connects the import of the first solenoid valve 7；The outlet of first solenoid valve 7 connects the import of the first refrigerant shut-off valve 6；Institute
The outlet for stating the first refrigerant shut-off valve 6 connects the import of first throttle valve 5；The outlet of the first throttle valve 5 connects cryogenic vaporizer 4
Import；The outlet of the cryogenic vaporizer 4 connects the import of the first compressor 3；The outlet of first compressor 3 connects the first oil
The import of separator 2；The outlet of first oil eliminator 2 connects the import of first gas cooler 1.
As shown in figure 8, super low temperature refrigeration system and cryogenic refrigerating system overlapping, i.e. subcritical carbon dioxide cascade refrigeration
System opens the first refrigerant shut-off valve 6, third refrigerant shut-off valve 16, closes the second refrigerant shut-off valve 17, the 4th refrigerant shut-off valve
27, the 5th refrigerant shut-off valve 26.
High-temperature level of the cryogenic refrigerating system as the subcritical carbon dioxide folding type cooling system, the cryogenic refrigeration
The outlet of the second gas cooler 9 of system connects the import of the second liquid storage device 19；The outlet of second liquid storage device 19 connects second
The import of solenoid valve 18；The outlet of the second solenoid valve 18 connects the import of third refrigerant shut-off valve 16；The third refrigerant is cut
Only the outlet of valve 16 connects the import of third throttle valve 15；The outlet of the third throttle valve 15 connect the first condenser/evaporator 14 into
Mouth 2 33；The outlet 2 34 of first condenser/evaporator 14 connects the import of the second compressor 11；Second compressor 11
Outlet connects the import of the second oil eliminator 10；The outlet of second oil eliminator 10 connects the import of second gas cooler 9.
Super low temperature refrigeration system is cold by first as the low-temperature level of the subcritical carbon dioxide folding type cooling system
Solidifying 14 overlapping of evaporator.
As shown in figure 9, super low temperature refrigeration system and cryogenic refrigerating system overlapping, cryogenic refrigerating system and conventional refrigerant system
Overlapping and three-level folding type cooling system open the first refrigerant shut-off valve 6, third refrigerant shut-off valve 16, the 5th refrigerant shut-off valve
26, close the second refrigerant shut-off valve 17, the 4th refrigerant shut-off valve 27.
High-temperature level of the conventional refrigerant system as the three-level folding type cooling system, the conventional refrigerant system
The outlet of condenser 20 connects the import of third liquid storage device 29；The outlet of the third liquid storage device 29 connect third solenoid valve 28 into
Mouthful；The outlet of the third solenoid valve 28 connects the import of the 5th refrigerant shut-off valve 26；The outlet of the 5th refrigerant shut-off valve 26
Connect the import of the 5th throttle valve 25；The outlet of 5th throttle valve 25 connects the import 2 37 of the second condenser/evaporator 30；It is described
The outlet 2 38 of second condenser/evaporator 30 connects the import of third compressor 22；The outlet of the third compressor 22 connects third oil
The import of separator 21；The outlet of the third oil eliminator 21 connects the import of condenser 20.
As shown in Figure 10~13, a kind of multistage folding type cooling system for large-size air conditioning system is each to meet
Demand of a building subregion to refrigerating capacity, concrete function are achieved in that
The flow chart of main system one shown in Fig. 10 need to realize subcritical carbon dioxide superposition type system since primary heat exchange
It is cold, subsequently determine whether its refrigerating capacity whether meet demand, if it is not, then continue once to exchange heat, until refrigerating capacity meet demand,
If so, carrying out secondary heat exchange, repeatedly heat exchange and judgement are then passed through until refrigerating capacity needed for reaching final building subregion.
The flow chart of auxiliary system one shown in Figure 11 need to realize complete carbon dioxide refrigeration since primary heat exchange, with
After judge its refrigerating capacity whether meet demand, if it is not, then continue once to exchange heat, until refrigerating capacity meet demand, if so,
Secondary heat exchange is then carried out, end heat exchange is then passed through, is delivered to matching building subregion or more after refrigerating capacity needed for meeting
The not chummery of functional architecture.
The flow chart of auxiliary system three shown in Figure 12 need to realize complete carbon dioxide refrigeration since primary heat exchange, with
After judge its refrigerating capacity whether meet demand, if it is not, then continue once to exchange heat, until refrigerating capacity meet demand, if so,
End heat exchange is then carried out, is delivered to not having sexual intercourse for matching building subregion or multi-use architecture after refrigerating capacity needed for meeting
Between.
The flow chart of auxiliary system eight shown in Figure 13 subsequently determines whether its refrigerating capacity meets need since exchanging heat end
It asks, if it is not, then continue end heat exchange, until refrigerating capacity meet demand, if being delivered to therewith after refrigerating capacity needed for meeting
The not chummery of matched building subregion or multi-use architecture.
Although above in conjunction with figure, invention has been described, and the invention is not limited to above-mentioned specific embodiment parties
Case, above-mentioned specific embodiment is only schematical, and be not it is restrictive, those skilled in the art this
Under the enlightenment of invention, without deviating from the spirit of the invention, many variations can also be made, these belong to of the invention
Within protection.
Claims (7)
1. a kind of multistage folding type cooling system for large-size air conditioning system, including super low temperature refrigeration system, cryogenic refrigeration system
System, conventional refrigerant system, water system, air conditioning terminal, it is characterized in that: the super low temperature refrigeration system and cryogenic refrigerating system heat are handed over
It changes；Cryogenic refrigerating system and super low temperature refrigeration system exchange heat after respectively with air conditioning terminal or several be equipped with different refrigeration working mediums
Conventional refrigerant system heat exchange；It is handed over respectively with several air conditioning terminal heat after conventional refrigerant system and cryogenic refrigerating system heat exchange
It changes；The air conditioning terminal is through water system circulation cooling.
2. a kind of multistage folding type cooling system for large-size air conditioning system according to claim 1, it is characterized in that: institute
State super low temperature refrigeration cooling system working medium preferably carbon dioxide refrigerant；The conventional refrigerant system refrigeration working medium are as follows: R134a system
Cryogen or R410a refrigerant.
3. a kind of multistage folding type cooling system for large-size air conditioning system according to claim 1 or 2, feature
Be: the super low temperature refrigeration system includes the first condenser/evaporator (14), the first oil eliminator for connecting cryogenic refrigerating system
(2), the first compressor (3), cryogenic vaporizer (4) first throttle valve (5), the first refrigerant shut-off valve (6), the first solenoid valve (7),
First liquid storage device (8)；The cryogenic refrigerating system includes the first condenser/evaporator (14) for connecting super low temperature refrigeration system, connection
The second condenser/evaporator (30), the second oil eliminator (10), the second compressor (11), medium temperature evaporator of cryogenic refrigerating system
(12), second throttle (13), the first condenser/evaporator (14), third throttle valve (15), third refrigerant shut-off valve (16), second
Refrigerant shut-off valve (17), second solenoid valve (18), the second liquid storage device (19)；The conventional refrigerant system include condenser (20),
Third oil eliminator (21), third compressor (22), high-temperature evaporator (23), the 4th throttle valve (24), the 5th throttle valve (25),
5th refrigerant shut-off valve (26), the 4th refrigerant shut-off valve (27), third solenoid valve (28), third liquid storage device (29), the second condensation
Evaporator (30).
First condenser/evaporator has import one (31), import two (33), one (32) of outlet, two (34) of outlet；Described first
The outlet one (32) of condenser/evaporator connects the import of the first liquid storage device；The outlet of first oil eliminator connects the first condensation evaporation
The import one (31) of device；The outlet two (34) of first condenser/evaporator connects the import of the second compressor；The third throttling
The outlet of valve connects the import two (33) of the first condenser/evaporator.
Second condenser/evaporator has import one (35), import two (37), one (36) of outlet, two (38) of outlet；Described second
The outlet one (36) of condenser/evaporator connects the import of the second liquid storage device；The outlet of second oil eliminator connects the second condensation evaporation
The import one (35) of device；The outlet two (38) of second condenser/evaporator connects the import of third compressor；5th throttling
The outlet of valve connects the import two (37) of the second condenser/evaporator.
4. a kind of multistage folding type cooling system for large-size air conditioning system according to claim 1, it is characterized in that: institute
The refrigeration working medium cascade refrigeration in the refrigeration working medium to work in cryogenic refrigerating system and super low temperature refrigeration system is stated, and it is multiple to make this
The high-temperature level of stacked refrigeration system.
5. a kind of multistage folding type cooling system for large-size air conditioning system according to claim 4, it is characterized in that: institute
- 55 DEG C~-25 DEG C of low-temperature level temperature range for stating folding type cooling system, -25 DEG C~-10 DEG C of high-temperature level temperature range.
6. a kind of multistage folding type cooling system for large-size air conditioning system according to claim 1, it is characterized in that: institute
The refrigeration working medium and cryogenic refrigerating system cascade refrigeration to work in conventional refrigerant system is stated, and makees this folding type cooling system
High-temperature level.
7. a kind of multistage folding type cooling system for large-size air conditioning system according to claim 6, it is characterized in that: institute
- 25 DEG C~-10 DEG C of low-temperature level temperature range for stating folding type cooling system；Conventional refrigerant is exchanged heat three times with water, can be obtained
Low temperature -10~10 DEG C；Water at low temperature and air conditioning terminal carry out end heat exchange, can be obtained 15 DEG C of final comfort air conditioning system required temperature~
25℃。
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| KR20030071607A (en) * | 2003-08-01 | 2003-09-03 | 오원길 | Heat pump system of cooling, heating and hot water using binary refrigerating machine with two stage cascade refrigeration |
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