CN109114842A - A kind of coupled mode computer-room air conditioning system and its control method - Google Patents
A kind of coupled mode computer-room air conditioning system and its control method Download PDFInfo
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- CN109114842A CN109114842A CN201811133871.5A CN201811133871A CN109114842A CN 109114842 A CN109114842 A CN 109114842A CN 201811133871 A CN201811133871 A CN 201811133871A CN 109114842 A CN109114842 A CN 109114842A
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims description 17
- 239000007788 liquid Substances 0.000 claims abstract description 65
- 238000005057 refrigeration Methods 0.000 claims abstract description 48
- 239000003507 refrigerant Substances 0.000 claims abstract description 39
- 238000009833 condensation Methods 0.000 claims abstract description 28
- 230000005494 condensation Effects 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims description 6
- 238000007906 compression Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 2
- 238000006467 substitution reaction Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
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- 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
- 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
- F24F5/0046—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 using natural energy, e.g. solar energy, energy from the ground
-
- 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
-
- 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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
- F25B41/30—Expansion means; Dispositions thereof
-
- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2519—On-off valves
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Combustion & Propulsion (AREA)
- Analytical Chemistry (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of coupled mode computer-room air conditioning systems, divide liquid storage device, liquid pump, evaporator, natural condensation device, the first bypass valve and the second bypass valve including compressor, check valve, refrigerant condenser, throttling set, gas, the exhaust outlet of the compressor is connected to the entrance of the refrigerant condenser by the check valve；The outlet of the refrigerant condenser is connected to the A connector that the gas divides liquid storage device by the throttling set；The entrance that the gas divides the B connector of liquid storage device to be connected to the liquid pump, C connector are connected to the gas returning port of the compressor, and D connector is connected to the outlet of refrigeration valve and the outlet of natural circulation valve；The outlet of the liquid pump connects the entrance of the evaporator.Switch refrigeration mode, coupled mode and natural circulation mode respectively according to outdoor degree and indoor load.Can be in low temperature season using Natural Circulation and coupling cycle substitution compression refrigeration mode, using outdoor natural cooling source, structure is simple, has significant effects of energy saving and emission reduction.
Description
Technical field
The present invention relates to air-conditioning technical fields, and in particular to one kind can maximally utilize natural cooling source, according to indoor and outdoor
The temperature difference infinitely constructs the coupled mode computer-room air conditioning system and its control method of heat pipe circulation.
Background technique
The fast development of information industry and digital Construction, has pushed the quantity of computer room, base station, and construction scale quickly increases
It is long, according to statistics computer room, base station air conditioner energy consumption account for the 40%~50% of its total energy consumption.Computer room, the sensible heat load ratio of base station are big, and one
The four seasons in year need continuous operation, and side set temperature is lower than the season of outside temperature indoors, and conventional air-conditioning system still needs to continue
Compression-type refrigerating system is run, refrigeration system working efficiency is low and easily breaks down, if indoor/outdoor temperature-difference low cost can be utilized
Conveying heat provides cooling capacity for indoor, will greatly reduce the energy consumption and operating cost of air-conditioning system.In the high warm season such as summer
Section is by utilizing cold achievable refrigeration system efficient operation.Significantly lifting system efficiency.It is room using outdoor Cryogenic air
The method that inside provides cooling capacity has obtained the concern of scholar in the industry and engineers and technicians, and engineering skill is unfolded in different forms
Art research, such as currently used fresh air system, in addition there are various forms of gas-gas, air-water heat-exchange system, and application
The composite air conditioner of hot pipe technique.
Summary of the invention
It is an object of the present invention to provide one kind can efficiently use outdoor cold source, energy-efficient, high reliablity
Coupled mode computer-room air conditioning system.
It is another object of the present invention to provide a kind of control methods for above-mentioned coupled mode computer-room air conditioning system, use
In coupled mode computer-room air conditioning system running mode switching, cooling capacity accuracy controlling and system oil return.
Realizing the technical solution of above-mentioned purpose is:
A kind of coupled mode computer-room air conditioning system, including compressor, check valve, refrigerant condenser, throttling set, gas divide liquid storage
Device, liquid pump, evaporator, natural condensation device, the first bypass valve and the second bypass valve,
The exhaust outlet of the compressor is connected to the entrance of the refrigerant condenser by the check valve；
The outlet of the refrigerant condenser is connected to the A connector that the gas divides liquid storage device by the throttling set；
The entrance that the gas divides the B connector of liquid storage device to be connected to the liquid pump, C connector are connected to the return-air of the compressor
Mouthful, D connector is connected to the outlet of refrigeration valve and the outlet of natural circulation valve；
The outlet of the liquid pump connects the entrance of the evaporator；
The entrance of natural condensation device described in the outlet of the evaporator；
The entrance of the outlet natural circulation valve of the natural condensation device；
The entrance of the refrigeration valve is connected to the outlet of the evaporator；
The entrance of the inlet communication refrigerant condenser of first bypass valve, described in the outlet of first bypass valve
The outlet of natural condensation device；
The outlet of the inlet communication refrigerant condenser of second bypass valve, described in the outlet of second bypass valve
The entrance of natural condensation device.
Preferably, the refrigerant condenser and natural condensation device are air-cooled condenser, water-cooled condenser or evaporating type condensing
Device.
A kind of control method of the coupled mode computer-room air conditioning system, is divided into refrigeration area, coupling for outside air temperature T0
Close area and three, natural cooling area section, in which:
When outside air temperature T0 is greater than preset temperature T2, system is switched to refrigeration cycle mode, at this time Natural Circulation
Valve is closed, the first by-passing valve is closed, the second by-passing valve is closed, refrigeration valve is opened, by compressor, check valve, refrigerant condenser, section
Stream device, gas divide liquid storage device, liquid pump, evaporator, refrigeration valve and gas that liquid storage device is divided to constitute refrigeration cycle；
When outside air temperature T0 is between preset temperature T1 and preset temperature T2, system is switched to coupling cycle mould
Formula, at this time natural circulation valve open, the first by-passing valve close, the second by-passing valve close, refrigeration valve close, by liquid pump, evaporator,
Natural condensation device, natural circulation valve constitute natural cooling circuit, and compressor, check valve, condenser, throttling set, gas divide liquid storage
Device constitutes refrigerating circuit, and refrigerating circuit, which divides at liquid storage device with natural cooling circuit in gas, to be coupled；
When outside air temperature T0 is less than preset temperature T1, system is switched to natural circulation mode, at this time Natural Circulation
Valve is opened, the first by-passing valve is opened, the second by-passing valve is opened, refrigeration valve is closed, by liquid pump, evaporator, the second by-passing valve, condensation
Device, natural condensation device, the first by-passing valve, natural circulation valve constitute natural cooling circuit.
Preferably, it is switched over when system model switches using temperature gap method and delay control method, i.e. setting temperature
Spend the deviation delta T0 and Δ t that holds time.
The beneficial effects of the present invention are: the present invention, according to outdoor temperature and indoor load size, regulating system runs shape
State makes air-conditioning system be switched to refrigeration cycle mode, coupled mode or natural circulation mode respectively, reduces existing compound sky
The unit cost of adjusting system, simplifies system structure, reduces maintenance difficulties；Simultaneously can efficiently use round the clock, transition season and
The outdoor natural cooling source in winter, is greatly lowered operation energy consumption, has excellent effects of energy saving and emission reduction.
Detailed description of the invention
Fig. 1 is the structure chart of coupled mode computer-room air conditioning system of the invention；
Fig. 2 is the loop structure figure of refrigeration mode in the present invention；
Fig. 3 is the loop structure figure of coupled mode in the present invention；
Fig. 4 is the loop structure figure of natural circulation mode in the present invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings.
Referring to Fig. 1, coupled mode computer-room air conditioning system of the invention, including compressor 1, check valve 2, refrigerant condenser 3,
Throttling set 4, gas divide liquid storage device 5, liquid pump 6, evaporator 7, natural condensation device 8, the first bypass valve 11 and the second bypass valve 12.
The exhaust outlet of the compressor 1 is connected to the entrance of the refrigerant condenser 3 by the check valve 2；Refrigeration condensation
The outlet of device 3 is connected to the A connector that the gas divides liquid storage device 5 by the throttling set 4；
The entrance that the gas divides the B connector of liquid storage device 5 to be connected to the liquid pump 6, C connector are connected to the compressor 1
Gas returning port, D connector are connected to the outlet of refrigeration valve 9 and the outlet of natural circulation valve 10；
The outlet of the liquid pump 6 connects the entrance of the evaporator 7；It is naturally cold described in the outlet of the evaporator 7
The entrance of condenser 8；The entrance of the outlet natural circulation valve 10 of the natural condensation device 8；The entrance of the refrigeration valve 9 is connected to
The outlet of the evaporator 7；The entrance of the inlet communication refrigerant condenser 3 of first bypass valve 11, first bypass valve
The outlet of natural condensation device 8 described in 11 outlet；The inlet communication refrigerant condenser 3 of second bypass valve 12 goes out
Mouthful, the entrance of natural condensation device 8 described in the outlet of second bypass valve 12.Refrigerant condenser 3 and natural condensation device 8 are
Air-cooled condenser, water-cooled condenser or evaporative condenser.Air-conditioning system in actual operation can be auxiliary with oil eliminator, filtering
The refrigeration devices such as device, liquid storage device, liquid-sighting glass, gas-liquid separator.
Outside air temperature T0 is divided into refrigeration area, coupling by the control method of coupled mode computer-room air conditioning system of the invention
Area and three, natural cooling area section are closed, main control unit is directed to different outdoor temperature sections, corresponding to switch air-conditioning system fortune
Row refrigeration cycle mode, coupling cycle mode or natural circulation mode.
When outside air temperature T0 is greater than preset temperature T2, system is switched to refrigeration cycle mode, as shown in Fig. 2, this
When natural circulation valve 10 is closed, the first by-passing valve 11 is closed, the second by-passing valve 12 is closed, refrigeration valve 9 is opened, by compressor 1, single
Liquid storage device 5, liquid pump 6, evaporator 7, refrigeration valve 9 and gas is divided to divide liquid storage device 5 to valve 2, refrigerant condenser 3, throttling set 4, gas
Constitute refrigeration cycle.Realization refrigeration is directly evaporated in evaporator 7 using refrigeration working medium；Working medium in 7 evaporation endothermic of evaporator,
After completion refrigeration leaves evaporator 7, gas is entered by the valve passage that freezes, liquid storage device 5 is divided to realize gas-liquid separation, wherein gaseous refrigerant
Agent carries out compression process into compressor is entered, and gaseous refrigerant is cooled to the working medium of liquid in condenser 3, into throttling set
4 reducing pressure by regulating flow, the gas-liquid mixed refrigerant after reducing pressure by regulating flow enter gas and divide liquid storage device 5, and wherein liquid refrigerant goes out with evaporator 7
The liquid refrigerant come is again introduced into evaporator 7 together and is evaporated heat absorption, realizes purpose of freezing, and gaseous refrigerant and evaporation
The gaseous refrigerant that device 7 comes out is sucked by compressor again together, so constitutes circulation.When outdoor temperature is higher, compressor 1
Highly effective refrigeration effect is played in mechanical refrigeration.
It is outdoor at this time that there is certain natural cooling source can use when outdoor temperature meets T1 < T0≤T2, system switching
For coupling cycle mode, as shown in figure 3, natural circulation valve 10 is opened at this time, the first by-passing valve 11 is closed, the second by-passing valve 12 closes
It closes, the closing of refrigeration valve 9, natural cooling circuit is constituted by liquid pump 6, evaporator 7, natural condensation device 8, natural circulation valve 10, is compressed
Machine 1, check valve 2, condenser 3, throttling set 4, gas divide liquid storage device 5 to constitute refrigerating circuit, compensate the refrigeration in natural cooling circuit
Shortcoming is measured, refrigerating circuit, which divides at liquid storage device 6 with natural cooling circuit in gas, to be coupled；Working medium is evaporated in evaporator 7 inhales
Heat is completed refrigeration and is left to enter natural condensation device 8 after evaporator 7 and carry out condensation cooling, passes through 10 channel of natural circulation valve and enter
Gas divides liquid storage device 5, and since outdoor natural cooling source is insufficient, the refrigerant for being condensed into gas-liquid mixture phase enters gas and divides liquid storage device 5
Realize gas-liquid separation, wherein gaseous refrigerant enters the progress compression process of compressor 1, and gaseous refrigerant is in condenser 3 after compression
In be cooled to the working medium of liquid, into 4 reducing pressure by regulating flow of throttling set, the gas-liquid mixed refrigerant after reducing pressure by regulating flow enters gas point storage
Liquid device 5, wherein liquid refrigerant is again introduced into evaporator 7 together with the liquid refrigerant that evaporator 7 comes out and is evaporated heat absorption,
Realize refrigeration purpose, compensate the deficiency of natural cooling, and gaseous refrigerant together with the gaseous refrigerant that evaporator 7 comes out again
It is sucked by compressor, so constitutes circulation.Natural cooling circulation is operated at full capacity at this time, and shortcoming is mended by compression refrigeration cycle
It repays.
When outside air temperature T0 is less than preset temperature T1, due to natural cooling source abundance, system is switched to Natural Circulation
Mode, as shown in figure 4, natural circulation valve 10 is opened at this time, the first by-passing valve 11 is opened, the second by-passing valve 12 is opened, refrigeration valve 9
It closes, by liquid pump 6, evaporator 7, the second by-passing valve 12, condenser 3, natural condensation device 8, the first by-passing valve 11, natural circulation valve
10 constitute natural cooling circuit, and condenser and natural condensation device work together at this time, since outdoor natural cooling source is enough, are condensed
Evaporator 7 is again introduced by the effect of liquid pump 6 at the refrigerant of liquid and is evaporated heat absorption, is realized refrigeration purpose, is so constituted
Circulation.
For example, being directed to 38 DEG C of constant temperature machine rooms, T1 is set as 15 DEG C, T2 is 25 DEG C, and when T≤15 DEG C, system runs nature
Circulation pattern, at 25 DEG C of T >, system runs refrigeration cycle mode, when temperature is between 15~25 DEG C, runs coupled mode
Formula.Switched over when system model switches using temperature gap method and delay control method, i.e. set temperature deviation delta T0 with
And the Δ t that holds time
Above embodiments are used for illustrative purposes only, rather than limitation of the present invention, the technology people in relation to technical field
Member, without departing from the spirit and scope of the present invention, can also make various transformation or modification, therefore all equivalent
Technical solution also should belong to scope of the invention, should be limited by each claim.
Claims (4)
1. a kind of coupled mode computer-room air conditioning system, which is characterized in that including compressor (1), check valve (2), refrigerant condenser
(3), throttling set (4), gas divide liquid storage device (5), liquid pump (6), evaporator (7), natural condensation device (8), the first bypass valve (11)
With the second bypass valve (12),
The exhaust outlet of the compressor (1) is connected to the entrance of the refrigerant condenser (3) by the check valve (2)；
The outlet of the refrigerant condenser (3) is connected to the A connector that the gas divides liquid storage device (5) by the throttling set (4)；
The entrance that the gas divides the B connector of liquid storage device (5) to be connected to the liquid pump (6), C connector are connected to the compressor (1)
Gas returning port, D connector be connected to refrigeration valve (9) outlet and natural circulation valve (10) outlet；
The outlet of the liquid pump (6) connects the entrance of the evaporator (7)；
The entrance of natural condensation device (8) described in the outlet of the evaporator (7)；
The entrance of the outlet natural circulation valve (10) of the natural condensation device (8)；
The entrance of the refrigeration valve (9) is connected to the outlet of the evaporator (7)；
The entrance of the inlet communication refrigerant condenser (3) of first bypass valve (11), the outlet of first bypass valve (11)
It is connected to the outlet of the natural condensation device (8)；
The outlet of the inlet communication refrigerant condenser (3) of second bypass valve (12), the outlet of second bypass valve (12)
It is connected to the entrance of the natural condensation device (8).
2. coupled mode computer-room air conditioning system according to claim 1, which is characterized in that the refrigerant condenser (3) and from
Right condenser (8) is air-cooled condenser, water-cooled condenser or evaporative condenser.
3. a kind of control method of coupled mode computer-room air conditioning system as described in claim 1, which is characterized in that by outdoor air temperature
Degree T0 is divided into refrigeration area, coupled zone and three, natural cooling area section, in which:
When outside air temperature T0 is greater than preset temperature T2, system is switched to refrigeration cycle mode, at this time natural circulation valve
(10) it closes, the first by-passing valve (11) closing, the second by-passing valve (12) closing, refrigeration valve (9) opening, by compressor (1), unidirectionally
Valve (2), refrigerant condenser (3), throttling set (4), gas divide liquid storage device (5), liquid pump (6), evaporator (7), refrigeration valve (9) and
Gas divides liquid storage device (5) to constitute refrigeration cycle；
When outside air temperature T0 is between preset temperature T1 and preset temperature T2, system is switched to coupling cycle mode,
Natural circulation valve (10) is opened at this time, the first by-passing valve (11) is closed, the second by-passing valve (12) is closed, refrigeration valve (9) is closed, by
Liquid pump (6), evaporator (7), natural condensation device (8), natural circulation valve (10) constitute natural cooling circuit, compressor (1), unidirectional
Valve (2), condenser (3), throttling set (4), gas divide liquid storage device (5) to constitute refrigerating circuit, refrigerating circuit and natural cooling circuit
Divide at liquid storage device (6) in gas and is coupled；
When outside air temperature T0 is less than preset temperature T1, system is switched to natural circulation mode, at this time natural circulation valve
(10) it opens, the first by-passing valve (11) opening, the second by-passing valve (12) opening, refrigeration valve (9) closing, by liquid pump (6), evaporator
(7), the second by-passing valve (12), condenser (3), natural condensation device (8), the first by-passing valve (11), natural circulation valve (10) are constituted
Natural cooling circuit.
4. control method according to claim 3, which is characterized in that when system model switches using temperature gap method and
Delay control method switches over, i.e. set temperature deviation delta T0 and the Δ t that holds time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811133871.5A CN109114842A (en) | 2018-09-27 | 2018-09-27 | A kind of coupled mode computer-room air conditioning system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811133871.5A CN109114842A (en) | 2018-09-27 | 2018-09-27 | A kind of coupled mode computer-room air conditioning system and its control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094818A (en) * | 2019-06-10 | 2019-08-06 | 克莱门特捷联制冷设备(上海)有限公司 | A kind of data center's compound air-conditioning system and its control method |
| CN111678270A (en) * | 2020-06-11 | 2020-09-18 | 南京航空航天大学 | Heat pipe and vapor compression composite system with self-operated capacity adjusting liquid reservoir |
| CN112097356A (en) * | 2020-10-13 | 2020-12-18 | 南京工业大学 | Fluorine pump type machine room air-cooled precision air conditioner |
| CN112378003A (en) * | 2020-11-05 | 2021-02-19 | 中国联合网络通信集团有限公司 | Energy-saving air conditioner and control method thereof |
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| JP2002048422A (en) * | 2000-07-31 | 2002-02-15 | Kyoritsu Reinetsu Kk | Heat pump |
| JP2012129408A (en) * | 2010-12-16 | 2012-07-05 | Hitachi Ltd | Cooling system for data center |
| CN103453705A (en) * | 2012-05-31 | 2013-12-18 | 艾默生网络能源有限公司 | Air conditioning system |
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| CN208901677U (en) * | 2018-09-27 | 2019-05-24 | 克莱门特捷联制冷设备(上海)有限公司 | A kind of coupled mode computer-room air conditioning system |
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| CN111678270A (en) * | 2020-06-11 | 2020-09-18 | 南京航空航天大学 | Heat pipe and vapor compression composite system with self-operated capacity adjusting liquid reservoir |
| CN112097356A (en) * | 2020-10-13 | 2020-12-18 | 南京工业大学 | Fluorine pump type machine room air-cooled precision air conditioner |
| CN112378003A (en) * | 2020-11-05 | 2021-02-19 | 中国联合网络通信集团有限公司 | Energy-saving air conditioner and control method thereof |
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