CN107062482B - A kind of air-conditioning system and its control method - Google Patents
A kind of air-conditioning system and its control method Download PDFInfo
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- CN107062482B CN107062482B CN201710253728.9A CN201710253728A CN107062482B CN 107062482 B CN107062482 B CN 107062482B CN 201710253728 A CN201710253728 A CN 201710253728A CN 107062482 B CN107062482 B CN 107062482B
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- host computer
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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
- F24F5/0017—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 using cold storage bodies, e.g. ice
- F24F5/0021—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 using cold storage bodies, e.g. ice using phase change material [PCM] for storage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-conditioning systems, including air-conditioning is for cold end, the first refrigeration host computer, the second refrigeration host computer, water storage container and heat exchanger；Wherein, air-conditioning is for, by the first watering cycle piping connection, air-conditioning is for being additionally provided with the second watering cycle pipeline in cold end between cold end and the first refrigeration host computer；Second refrigeration host computer is connect by third watering cycle pipeline with water storage container, and the 4th watering cycle pipeline is additionally provided on water storage container；Heat exchanger is connected between the second watering cycle pipeline and the 4th watering cycle pipeline.The invention also discloses a kind of control methods of air-conditioning system.By the way that heat exchanger is arranged, realize that air-conditioning is completely isolated with water storage container for cold end, air-conditioning is avoided to leak into water storage container for the water of cold end, it ensure that the safe and stable operation of air-conditioning system, refrigeration is given full play to, refrigeration effect is improved, the operation of air-conditioning system is optimized, reduces use cost.
Description
Technical field
The present invention relates to water cool-storage technology technical field more particularly to a kind of air-conditioning systems and its control method.
Background technique
With the continuous development of urbanization process, more and more data centers, office building, market, institutional settings, amusement
The palaces such as place, hospital, hotel are constantly rised sheer from level ground, and central air conditioner system is that these palaces must
Indispensable important equipment facility.The electric load " weight night in daytime is light " of central air conditioner system, " strives peak to allow with the other loads of power grid
Paddy " is the principal element for causing power grid peak load difference.To guarantee the safe, reasonable of power grid and economically running, user is encouraged
Electric load is called, is realized " peak load shifting ", country carries out Peak-valley TOU power price.
Technology of Cold Storage Air Conditions is applied to a kind of calling electric load technology under Peak-valley TOU power price system.Cooling capacity is stored
In certain medium or material, it is known as energy-storage system in the system that another period releases；When cooling capacity is with sensible heat or latent heat shape
Formula is stored in certain medium, and the air-conditioning system for capableing of released cold quantity when needed is known as chilling air conditioning system, abbreviation cold-storage
System；By way of ice making, cooling capacity is stored with latent heat of phase change, and ice-melt when needed releases the air-conditioning system of cooling capacity and is known as ice
Chilling air conditioning system, abbreviation ice-storage system；System using the sensible heat storage cooling capacity of water is known as chilled water storage system.Cool storage medium
Usually there are water, ice and salt eutectic phase-change material etc..
Cold accumulation system is generally made of refrigeration, cold-storage and cold supply system.Refrigeration, cold accumulation system are by refrigeration host computer, cold-storage
Equipment, ancillary equipment, control and regulation four part of equipment are connected by pipeline and conducting wire (including pilot and power cable etc.)
Composition.Conventional water cool-storage technology technology, in cold-storage, using the method that valve is closed by air conditioning terminal or air-conditioning for cold end
Water is isolated with water storage container, is not closed completely reality if there is because of valve, is made the water of air conditioning terminal that can leak into water storage container, is passed through
Water storage container leaks, and air-conditioning system is caused to be not normally functioning.
Summary of the invention
The purpose of the present invention is to overcome the defects in the prior art, provides the air-conditioning system and its control of a kind of operational safety
Method processed.
Technical solution of the present invention provides a kind of air-conditioning system, including air-conditioning is led for cold end, the first refrigeration host computer, the second refrigeration
Machine, water storage container and heat exchanger；
Wherein, the air-conditioning is for passing through the first watering cycle piping connection, institute between cold end and first refrigeration host computer
Air-conditioning is stated for being additionally provided with the second watering cycle pipeline in cold end；
Second refrigeration host computer by connecting between third watering cycle pipeline and the water storage container, hold by the water storage
The 4th watering cycle pipeline is additionally provided on device；
The heat exchanger is connected between the second watering cycle pipeline and the 4th watering cycle pipeline.
Further, the 5th watering cycle pipeline is also connected between second refrigeration host computer and the heat exchanger.
Further, further include having control unit, described control unit respectively with first refrigeration host computer and described
Two refrigeration host computer signals connection, for controlling the switch of first refrigeration host computer and second refrigeration host computer.
It further, further include having computing unit and comparison judgment unit；
The computing unit connects with the air-conditioning for cold end, first refrigeration host computer and the water storage container signal respectively
Connect, for calculate air-conditioning for air-conditioning required for cold end for refrigeration duty R, water storage container for refrigeration duty R1, in water storage container
Cold storage capacity R2With the first refrigeration host computer for refrigeration duty R3；
The comparison judgment unit is connect with the computing unit and described control unit signal respectively, for compare R with
R1, R and R1+R2, and comparison result is exported to described control unit, described control unit is according to by the comparison judgment unit
The comparison result transmitted controls the switch of first refrigeration host computer and second refrigeration host computer.
It further, further include having the first temperature acquiring unit；
First temperature acquiring unit is connect with described control unit signal, for obtaining the reality in the water storage container
Border temperature T1, and the temperature results that will acquire are delivered to described control unit, described control unit is according to by first temperature
The temperature results that acquiring unit transmits control the switch of second refrigeration host computer.
It further, further include having the first temperature comparing unit；
If the cold-storage target water temperature of water storage container is T2, the second refrigeration host computer opening temperature be T3, second refrigeration host computer
Shutdown temperature is TX；
The first temperature comparing unit is connect with first temperature acquiring unit and described control unit signal respectively,
For comparing T1With T2+T3And T1With T2+TX, and comparison result is exported to described control unit, described control unit according to by
The comparison result that the first temperature comparing unit transmits controls the switch of second refrigeration host computer.
It further, further include having second temperature acquiring unit；
The second temperature acquiring unit is connect with described control unit signal, for obtaining the air-conditioning for the reality of cold end
Border cooling temperature T4, and the temperature results that will acquire are delivered to described control unit, described control unit is according to by described second
The temperature results that temperature acquiring unit transmits control the switch of first refrigeration host computer.
It further, further include having second temperature comparing unit；
If air-conditioning is T for the cooling supply target water temperature of cold end5, the first refrigeration host computer opening temperature be T6, the first refrigeration host computer
Shutdown temperature be TY；
The second temperature comparing unit is connect with the second temperature acquiring unit and described control unit signal respectively,
For comparing T4With T5+T6And T4With T5+TY, and comparison result is exported to described control unit, described control unit according to by
The comparison result that the second temperature comparing unit transmits controls the switch of first refrigeration host computer.
It further, further include having electricity consumption period judging unit；
The electricity consumption period judging unit is connect with described control unit signal, is used for judging that the current power time is in
Electric peak period, with the specific period in level peak period and low power consumption period, and judging result is exported to the control
Unit, described control unit control first refrigeration host computer according to the judging result transmitted by the electricity consumption period judging unit
It is switched with second refrigeration host computer.
Technical solution of the present invention also provides a kind of control method of air-conditioning system, includes the following steps:
Water storage container cold-storage:
Second refrigeration host computer, which is opened, carries out cold-storage to the water in water storage container；
Water storage container is let cool:
Cold water in water storage container enters in heat exchanger through the 4th watering cycle pipeline, and with the second watering cycle pipeline
In hot water carry out heat exchange, the cold water of acquisition is delivered to air-conditioning for cold end by the second watering cycle pipeline；
First refrigeration host computer supplying cold directly:
It opens the first cooling supply host and supplies cold water for cold end to air-conditioning.
It further, further include following steps, the second refrigeration host computer supplying cold directly:
It opens the second cooling supply host and supplies cold water to the 5th watering cycle pipeline, and supplied water and followed with second by heat exchanger
Hot water in endless tube road carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning for cold end by the second watering cycle pipeline.
Further, further include following steps, while water storage container cold-storage, also directly supplied by the second refrigeration host computer
It is cold.
Further, further include following steps, while water storage container is let cool, also directly supplied by the second refrigeration host computer
It is cold.
It further, further include following steps, the first refrigeration host computer and the second refrigeration host computer are combined to air-conditioning to be supplied for cold end
It is cold.
Further, as electricity consumption period judging unit judges that the current power time was in the low power consumption period, then pass through
Control unit opens the second refrigeration host computer cold-storage into water storage container；
Such as during water storage container cold-storage, comparison judgment unit, which compares, obtains R < R1, R2> 0 then opens water storage appearance
Device is let cool.
Further, as electricity consumption period judging unit judges that the current power time is in the peak of power consumption period or with level peak
In period, and comparison judgment unit compares acquisition R < R1, R2> 0 then individually opens water storage container and lets cool.
Further, as electricity consumption period judging unit judges that the current power time is in the peak of power consumption period or with level peak
In period, and comparison judgment unit compares acquisition R1+R3> R > R1, R2> 0, then while unlatching water storage container is let cool, also
Pass through the first refrigeration host computer supplying cold directly.
Further, as electricity consumption period judging unit judges that the current power time is in the peak of power consumption period or with level peak
In period, and comparison judgment unit compares acquisition R > R1+R3, R2> 0 also passes through then while unlatching water storage container is let cool
First refrigeration host computer and the second refrigeration host computer air conditioning.
Further, as electricity consumption period judging unit judges that the current power time is in the peak of power consumption period or with level peak
In period, and comparison judgment unit compares acquisition R < R3, R2=0, then directly pass through the first refrigeration host computer cooling supply.
Further, as electricity consumption period judging unit judges that the current power time is in the peak of power consumption period or with level peak
In period, and comparison judgment unit compares acquisition R > R3, R2=0, then combined by the first refrigeration host computer and the second refrigeration host computer
Cooling supply.
Further, as electricity consumption period judging unit judges that the current power time was in the low power consumption period, control is single
The actual temperature T that member is obtained from the first temperature acquiring unit1Higher than preset temperature, then opens the second refrigeration host computer and hold to water storage
Cold-storage in device.
Further, in arbitrary period, the practical cooling supply temperature that is obtained from second temperature acquiring unit such as control unit
Spend T4Higher than preset temperature, then the first refrigeration host computer supplying cold directly is opened.
By adopting the above technical scheme, it has the following beneficial effects:
By the way that heat exchanger is arranged, realizes that air-conditioning is completely isolated with water storage container for cold end, avoid air-conditioning for the water of cold end
It leaks into water storage container, ensure that the safe and stable operation of air-conditioning system.
And cold-storage, cooling supply multiple combinations mode may be implemented, and refrigeration has been given full play to, refrigeration effect is improved, it is full
The different needs of foot.
By peak load shifting, the operation of air-conditioning system is optimized, use cost is reduced.
Detailed description of the invention
Fig. 1 is the schematic diagram for the air-conditioning system that one embodiment of the invention provides；
Fig. 2 is control unit and the first refrigeration host computer and the second refrigeration host computer signal connection schematic diagram；
Fig. 3 is computing unit, comparison judgment unit and control unit signal connection schematic diagram；
Fig. 4 is the first temperature acquiring unit, the first temperature comparing unit and control unit signal connection schematic diagram；
Fig. 5 is second temperature acquiring unit, second temperature comparing unit and control unit signal connection schematic diagram；
Fig. 6 is electricity consumption period judging unit and control unit signal connection schematic diagram.
The appended drawing reference table of comparisons:
1- air-conditioning is for cold end；The first refrigeration host computer of 2-；The second refrigeration host computer of 3-；
4- water storage container；5- heat exchanger；6- the first watering cycle pipeline；
7- the second watering cycle pipeline；8- third watering cycle pipeline；The 4th watering cycle pipeline of 9-；
The 5th watering cycle pipeline of 10-；11- control unit；12- computing unit；
13- comparison judgment unit；The first temperature acquiring unit of 14-；15- the first temperature comparing unit；
16- second temperature acquiring unit；17- second temperature comparing unit；
18- electricity consumption period judging unit.
Specific embodiment
Further illustrate a specific embodiment of the invention with reference to the accompanying drawing.Wherein identical components are with identical
Appended drawing reference indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down"
Refer to that the direction in attached drawing, word "inner" and "outside" refer respectively to the direction towards or away from geometric center of specific component.
As shown in Figure 1, one embodiment of the invention provide air-conditioning system, including air-conditioning for cold end 1, the first refrigeration host computer 2,
Second refrigeration host computer 3, water storage container 4 and heat exchanger 5.
Wherein, air-conditioning is connected for passing through the first watering cycle pipeline 6 between cold end 1 and the first refrigeration host computer 2, air-conditioning cooling supply
The second watering cycle pipeline 7 is additionally provided on end 1.
Second refrigeration host computer 3 is connect by third watering cycle pipeline 8 with water storage container 4, is additionally provided on water storage container 4
4th watering cycle pipeline 9；
Heat exchanger 5 is connected between the second watering cycle pipeline 7 and the 4th watering cycle pipeline 9.
Air-conditioning in the present invention is the end of the outside cooling supply of air-conditioning, also referred to as air conditioning terminal or user terminal for cold end 1.
Water storage container 4 in the present invention can be catch basin or water tank.
Watering cycle pipeline in the present invention refers to for supplying water, and the pipe of the enough circulations in the pipeline of water energy
Road.
Air-conditioning system provided by the invention can according to need realization: 4 cold-storage of water storage container is used in low power consumption,
In peak of power consumption, let cool using water storage container 4, power cost saving.
Air-conditioning system provided by the invention, due to leading between the second watering cycle pipeline 7 and the 4th watering cycle pipeline 9
Over-heat-exchanger 5 carries out heat exchange and avoids air-conditioning for cold end to realize that air-conditioning is completely isolated with water storage container for cold end
Water leaks into water storage container, ensure that the safe and stable operation of air-conditioning system.
Air-conditioning system provided by the invention can provide several working ways, meet the needs of different, specific as follows:
Water storage container cold-storage；The independent cooling supply of first refrigeration host computer；Water storage container is let cool；Water storage container lets cool the+the first refrigeration
Diversified combination may be implemented in host cooling supply etc., operated according to the specific requirements of user, reaches power saving and effectively freezes
Effect.
Wherein, in 4 cold-storage of water storage container:
Second refrigeration host computer 3 is opened, by the water pump above third watering cycle pipeline 8 and its in water storage container 4
Water carries out circularly cooling, is then transmitted back in water storage container 4 cold water obtained by third watering cycle pipeline 8 and stores
It is cold.
When water storage container 4 is let cool:
Cold water in water storage container 4 enters in heat exchanger 5 through the 4th watering cycle pipeline 9, and with the second watering cycle
Hot water in pipeline 7 carries out heat exchange, the second watering cycle pipeline 7 by the cold water of acquisition be delivered to air-conditioning in cold end 1 into
Row cooling supply.
In the first 2 supplying cold directly of refrigeration host computer:
The first cooling supply host 2 is opened, cold water is supplied for cold end to air-conditioning by the first watering cycle pipeline 6.
Preferably, as shown in Figure 1, being also connected with the 5th watering cycle pipeline between the second refrigeration host computer 3 and heat exchanger 5
10, so it can be achieved:
Water storage container cold-storage the+the second refrigeration host computer cooling supply；Water storage container lets cool the+the second refrigeration host computer cooling supply；First refrigeration
Host cooling supply the+the second refrigeration host computer cooling supply；Water storage container lets cool+the first refrigeration host computer cooling supply the+the second refrigeration host computer cooling supply, enriches
Cooling supply scheme, meets the diversified demand of client, and realize power saving effect.
In the second 3 supplying cold directly of refrigeration host computer:
The second cooling supply host 3 is opened, supplies cold water to the 5th watering cycle pipeline 10, and pass through heat exchanger 5 and second
Hot water in watering cycle pipeline 7 carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning cooling supply by the second watering cycle pipeline 7
End 1 carries out cooling supply.
Preferably, control unit 11 is divided as shown in Fig. 2, air-conditioning system provided by the invention further includes having control unit 11
It is not connect with the first refrigeration host computer 2 and 3 signal of the second refrigeration host computer, for controlling the first refrigeration host computer 2 and the second refrigeration host computer 3
Switch.
Signal connection mentioned in the present invention can connect for wireless signal, can also carry out circuit connection by conducting wire.
The switch that the first refrigeration host computer 2 and the second refrigeration host computer 3 are automatically controlled by control unit 11, facilitates control, real
The automation control of whole system is showed.
Preferably, as shown in figure 3, air-conditioning system provided by the invention further includes having computing unit 12 and comparison judgment unit
13；
Computing unit 12 is connect with air-conditioning for cold end 1, the first refrigeration host computer 2 and 4 signal of water storage container respectively, for calculating
Out air-conditioning for air-conditioning required for cold end 1 for refrigeration duty R, water storage container 4 for refrigeration duty R1, cold storage capacity R in water storage container 42
With the first refrigeration host computer 2 for refrigeration duty R3。
Comparison judgment unit 13 is connect with computing unit 12 and 11 signal of control unit respectively, for comparing R and R1、R2、R3
And R and R1+R3, and comparison result is exported to control unit 11, control unit 11 is according to the ratio transmitted by comparison judgment unit 13
The switch of relatively result control the first refrigeration host computer 2 and the second refrigeration host computer 3.
For example, in the peak of power consumption period or in the level peak period:
Comparison judgment unit 13, which compares, obtains R < R1, R2> 0 is then let cool only with water storage container 4.Control unit 11 can be with
It is connect with the control valve signal on water storage container 4, realizes that water storage container 4 is automatic by opening the control valve on water storage container 4
It lets cool.
R is obtained as comparison judgment unit 13 compares1+R3> R > R1, R2> 0 is then let cool in unlatching water storage container 4 same
When, also pass through 2 supplying cold directly of the first refrigeration host computer.
R > R is obtained as comparison judgment unit compares1+R3, R2> 0 is also logical then while unlatching water storage container 4 is let cool
Cross 3 air conditioning of the first refrigeration host computer 2 and the second refrigeration host computer.
R < R is obtained as comparison judgment unit 13 compares3, R2=0, then directly pass through 2 cooling supply of the first refrigeration host computer.
R > R is obtained as comparison judgment unit 13 compares3, R2=0, then pass through the first refrigeration host computer 2 and the second refrigeration host computer 3
Air conditioning.
Preferably, as shown in figure 4, air-conditioning system provided by the invention further includes having the first temperature acquiring unit 14.
First temperature acquiring unit 14 is connect with 11 signal of control unit, for obtaining the actual temperature in water storage container 4
T1, and the temperature results that will acquire are delivered to control unit 11, control unit 11 is transmitted according to by the first temperature acquiring unit 14
Temperature results control the second refrigeration host computer 3 switch.
A preset temperature T can be set to control unit 110, such as 4 DEG C.When within the low power consumption period, when water storage is held
Actual temperature T in device 41At 4 DEG C of >, then control unit 11 directly opens the second refrigeration host computer 3 and carries out cold-storage, realizes automation
Operation.As the actual temperature T in water storage container 41At≤4 DEG C, then control unit 11 remains turned-off the second refrigeration host computer 3, saves
Electricity consumption.
Preferably, as shown in figure 4, air-conditioning system provided by the invention further includes having the first temperature comparing unit 15.
If the cold-storage target water temperature of water storage container 4 is T2, the second refrigeration host computer 3 opening temperature be T3, the second refrigeration host computer
3 shutdown temperature is TX。
First temperature comparing unit 15 is connect with the first temperature acquiring unit 14 and 11 signal of control unit respectively, for than
Compared with T1With T2+T3And T1With T2+TX, and comparison result is exported to control unit 11, control unit 11 is according to by the first temperature ratio
Compared with the switch that the comparison result that unit 15 transmits controls the second refrigeration host computer 3.
The cold-storage target water temperature T of water storage container 42, the second refrigeration host computer 3 opening temperature T3With stopping for the second refrigeration host computer 3
Machine temperature is TXIt can be set as needed.
In order to obtain temperature, temperature sensor can be set in water storage container 4.
In the low power consumption period, such as comparison result of the first temperature comparing unit 15 is T1> T2+T3, then second is opened
Refrigeration host computer 3 carries out cold-storage to water storage container 4；If the comparison result of the first temperature comparing unit 15 is T1≤T2+TX, then second
Refrigeration host computer 3 is closed, and cold-storage is stopped.
Preferably, as shown in figure 5, air-conditioning system provided by the invention further includes having second temperature acquiring unit 16.
Second temperature acquiring unit 16 is connect with 11 signal of control unit, for obtaining air-conditioning for the practical cooling supply of cold end 1
Temperature T4, and the temperature results that will acquire are delivered to control unit 11, control unit 11 is according to by second temperature acquiring unit 16
The temperature results transmitted control the switch of the first refrigeration host computer 2.
Preferably, as shown in figure 5, air-conditioning system provided by the invention further includes having second temperature comparing unit 17；
If air-conditioning is T for the cooling supply target water temperature of cold end 15, the first refrigeration host computer opening temperature be T6, first refrigeration master
The shutdown temperature of machine is TY。
Second temperature comparing unit 17 is connect with second temperature acquiring unit 16 and 11 signal of control unit respectively, for than
Compared with T4With T5+T6And T4With T5+TY, and comparison result is exported to control unit 11, control unit 11 is according to by second temperature ratio
Compared with the switch that the comparison result that unit 17 transmits controls the first refrigeration host computer 2.
Cold-storage target water temperature T of the air-conditioning for cold end 15, the first refrigeration host computer 2 opening temperature T6With the first refrigeration host computer
Shutdown temperature TYIt can be set as needed.
It, can be in air-conditioning for temperature sensor is arranged in cold end 1 in order to obtain temperature.
If the comparison result of second temperature comparing unit 17 is T4> T5+T6, then the first refrigeration host computer 2 is opened directly to sky
It adjusts for cold end 1, improves air conditioner refrigeration effect；If the comparison result of second temperature comparing unit 17 is T4≤T5+TY, then first make
Cold host 2 stops working.
Preferably, as shown in fig. 6, air-conditioning system provided by the invention further includes having electricity consumption period judging unit 18.
Electricity consumption period judging unit 18 is connect with 11 signal of control unit, for judging that the current power time is in electricity consumption height
The peak period exports with the specific period in level peak period and low power consumption period, and by judging result to control unit 11, control
Unit 11 processed controls the first refrigeration host computer 2 and the second refrigeration host computer according to the judging result transmitted by electricity consumption period judging unit 18
3 switches.
For example, then preferentially being opened as electricity consumption period judging unit 18 judges that the current power time was in the low power consumption period
It opens the second refrigeration host computer 3 and carries out cold-storage, electricity price is minimum at this time, saves the electricity charge.
The peak of power consumption period is in or in the level peak period as electricity consumption period judging unit 18 judges the current power time,
It is then preferentially individually let cool using water storage container 4, at this time electricity price highest, power cost saving.
The peak of power consumption period, can be from local power supply bureau with the specific period of level peak period and low power consumption period
It obtains.
Such as a kind of division methods, 8 hours peak of power consumption periods (10:00-15:00；18:00—21:00)；Use level
8 hours peak periods (7:00-10:00；15:00—18:00；21:00—23:00)；8 hours low power consumption periods (23:00-
Next day 7:00).According to season, area, there are also other division methods.
Air-conditioning system provided by the invention may include having time delay module unit, when control unit 11 needs to open the first system
When cold host 2 or the second refrigeration host computer 3, delay 20s or predetermined time are then turned on, and are played a protective role.
As shown in Figure 1, the control method for the air-conditioning system that one embodiment of the invention provides, includes the following steps:
4 cold-storage of water storage container:
Second refrigeration host computer 3, which is opened, carries out cold-storage to the water in water storage container 4.
Water storage container 4 is let cool:
Cold water in water storage container 4 enters in heat exchanger 5 through the 4th watering cycle pipeline 9, and with the second watering cycle
Hot water in pipeline 7 carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning for cold end 1 by the second watering cycle pipeline 7.
First refrigeration host computer, 2 supplying cold directly:
It opens the first cooling supply host 2 and supplies cold water for cold end 1 to air-conditioning.
Specifically, in 4 cold-storage of water storage container:
Second refrigeration host computer 3 is opened, by the water pump above third watering cycle pipeline 8 and its in water storage container 4
Water carries out circularly cooling, is then transmitted back in water storage container 4 cold water obtained by third watering cycle pipeline 8 and stores
It is cold.
When water storage container 4 is let cool:
Cold water in water storage container 4 enters in heat exchanger 5 through the 4th watering cycle pipeline 9, and with the second watering cycle
Hot water in pipeline 7 carries out heat exchange, the second watering cycle pipeline 7 by the cold water of acquisition be delivered to air-conditioning in cold end 1 into
Row cooling supply.
In the first 2 supplying cold directly of refrigeration host computer:
The first cooling supply host 2 is opened, cold water is supplied for cold end to air-conditioning by the first watering cycle pipeline 6.
The control method of air-conditioning system provided by the invention, due in the second watering cycle pipeline 7 and the 4th watering cycle
Heat exchange is carried out by heat exchanger 5 between pipeline 9 to avoid to realize that air-conditioning is completely isolated with water storage container for cold end
Air-conditioning leaks into water storage container for the water of cold end, the safe and stable operation for the air-conditioning system that ensure that.
Preferably, as shown in Figure 1, the control method of air-conditioning system provided by the invention further includes following steps, the second system
Cold 3 supplying cold directly of host.
It opens the second cooling supply host 3 and supplies cold water to the 5th watering cycle pipeline 10, and supplied by heat exchanger 5 and second
Hot water in water circulation pipe 7 carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning for cold end by the second watering cycle pipeline 7
1。
Preferably, the control method of air-conditioning system provided by the invention further includes following steps, in 4 cold-storage of water storage container
Meanwhile the scheme of the+the second refrigeration host computer of water storage container cold-storage cooling supply is also realized by 3 supplying cold directly of the second refrigeration host computer.
Preferably, the control method of air-conditioning system provided by the invention further includes following steps, let cool in water storage container 4
Meanwhile also by 3 supplying cold directly of the second refrigeration host computer, realize that water storage container lets cool the air conditioning of the+the second refrigeration host computer cooling supply
Scheme.
Preferably, the control method of air-conditioning system provided by the invention further includes following steps, the first refrigeration host computer 2 and
Two refrigeration host computers 3 are combined to air-conditioning for cold end cooling supply, realize the scheme of the first refrigeration host computer and the second refrigeration host computer air conditioning.
Specifically, the control method of this air-conditioning system provided by the invention, may be implemented following cold-storage, lets cool scheme:
Water storage container cold-storage；The independent cooling supply of first refrigeration host computer；Water storage container is let cool；Water storage container lets cool the+the first refrigeration
Host cooling supply；Water storage container cold-storage the+the second refrigeration host computer cooling supply；Water storage container lets cool the+the second refrigeration host computer cooling supply；First refrigeration
Host cooling supply the+the second refrigeration host computer cooling supply；Water storage container lets cool+the first refrigeration host computer cooling supply the+the second refrigeration host computer cooling supply.
Preferably, then passing through as electricity consumption period judging unit 18 judges that the current power time was in the low power consumption period
Control unit 11 opens the second refrigeration host computer 3 cold-storage into water storage container 4, and electricity price is minimum at this time, power cost saving.
Such as during 4 cold-storage of water storage container, comparison judgment unit 13, which compares, obtains R < R1, R2> 0, then open water storage
Container 4 is let cool, and prior applicability water storage container is let cool, power cost saving.
Preferably, as electricity consumption period judging unit 18 judges that the current power time is in the peak of power consumption period or with level peak
In period, and comparison judgment unit 13 compares acquisition R < R1, R2> 0 then individually opens water storage container 4 and lets cool, preferential using storage
Water container is let cool, power cost saving.
Preferably, as electricity consumption period judging unit 18 judges that the current power time is in the peak of power consumption period or with level peak
In period, and comparison judgment unit 13 compares acquisition R1+R3> R > R1, R2> 0, then while unlatching water storage container 4 is let cool,
Also by 2 supplying cold directly of the first refrigeration host computer, refrigeration effect is improved, and being capable of power cost saving.
Preferably, as electricity consumption period judging unit 18 judges that the current power time is in the peak of power consumption period or with level peak
In period, and comparison judgment unit 13 compares acquisition R > R1+R3, R2> 0 is also logical then while unlatching water storage container 4 is let cool
3 air conditioning of the first refrigeration host computer 2 and the second refrigeration host computer is crossed, improves refrigeration effect, and being capable of power cost saving.
Preferably, as electricity consumption period judging unit 18 judges that the current power time is in the peak of power consumption period or with level peak
In period, and comparison judgment unit 13 compares acquisition R < R3, R2=0, then directly meet and supply by 2 cooling supply of the first refrigeration host computer
Cold demand.
Preferably, as electricity consumption period judging unit 18 judges that the current power time is in the peak of power consumption period or with level peak
In period, and comparison judgment unit 13 compares acquisition R > R3, R2=0, then pass through the first refrigeration host computer 2 and the second refrigeration host computer 3
Air conditioning meets cooling needs.
Preferably, control is single as electricity consumption period judging unit 18 judges that the current power time was in the low power consumption period
The actual temperature T that member 11 is obtained from the first temperature acquiring unit 141Higher than preset temperature, then open the second refrigeration host computer 3 to
Cold-storage in water storage container 4, realizes automation control.
Preferably, in arbitrary period, the practical cooling supply that is obtained from second temperature acquiring unit 16 such as control unit 11
Temperature T4Higher than preset temperature, then 2 supplying cold directly of the first refrigeration host computer is opened, cooling needs are met.
In conclusion the present invention provides air-conditioning system and its control method, by the way that heat exchanger is arranged, air-conditioning cooling supply is realized
End is completely isolated with water storage container, and air-conditioning is avoided to leak into water storage container for the water of cold end, ensure that the safety of air-conditioning system is steady
Fixed operation.And cold-storage, cooling supply multiple combinations mode may be implemented, refrigeration has been given full play to, refrigeration effect is improved, has been met
Different needs.By peak load shifting, the operation of air-conditioning system is optimized, use cost is reduced.
As needed, above-mentioned each technical solution can be combined, to reach best-of-breed technology effect.
Above-described is only the principle of the present invention and preferred embodiment.It should be pointed out that for the common skill of this field
For art personnel, on the basis of the principle of the invention, several other modifications can also be made, also should be regarded as protection model of the invention
It encloses.
Claims (15)
1. a kind of air-conditioning system, which is characterized in that hold including air-conditioning for cold end, the first refrigeration host computer, the second refrigeration host computer, water storage
Device and heat exchanger；
Wherein, the air-conditioning is for passing through the first watering cycle piping connection, the sky between cold end and first refrigeration host computer
It adjusts for being additionally provided with the second watering cycle pipeline in cold end；
Second refrigeration host computer is connect by third watering cycle pipeline with the water storage container, is also set on the water storage container
It is equipped with the 4th watering cycle pipeline；
The heat exchanger is connected between the second watering cycle pipeline and the 4th watering cycle pipeline；
The 5th watering cycle pipeline is also connected between second refrigeration host computer and the heat exchanger；
Further include having control unit, described control unit respectively with first refrigeration host computer and the second refrigeration host computer signal
Connection, for controlling the switch of first refrigeration host computer and second refrigeration host computer；
It further include having computing unit and comparison judgment unit；
The computing unit is connect with the air-conditioning for cold end, first refrigeration host computer and the water storage container signal respectively,
For calculate air-conditioning for air-conditioning required for cold end for refrigeration duty R, water storage container for refrigeration duty R1, storage in water storage container
Cooling capacity R2With the first refrigeration host computer for refrigeration duty R3；
The comparison judgment unit is connect with the computing unit and described control unit signal respectively, for comparing R and R1, R with
R1+R2, and comparison result is exported to described control unit, described control unit by the comparison judgment unit according to being transmitted
Comparison result controls the switch of first refrigeration host computer and second refrigeration host computer.
2. air-conditioning system according to claim 1, which is characterized in that further include having the first temperature acquiring unit；
First temperature acquiring unit is connect with described control unit signal, for obtaining the practical temperature in the water storage container
Spend T1, and the temperature results that will acquire are delivered to described control unit, described control unit is obtained according to by first temperature
The temperature results that unit transmits control the switch of second refrigeration host computer.
3. air-conditioning system according to claim 2, which is characterized in that further include having the first temperature comparing unit；
If the cold-storage target water temperature of water storage container is T2, the second refrigeration host computer opening temperature be T3, the second refrigeration host computer shutdown
Temperature is TX；
The first temperature comparing unit is connect with first temperature acquiring unit and described control unit signal respectively, is used for
Compare T1With T2+T3And T1With T2+TX, and comparison result is exported to described control unit, described control unit is according to by described
The comparison result that first temperature comparing unit transmits controls the switch of second refrigeration host computer.
4. air-conditioning system described in any claim in -3 according to claim 1, which is characterized in that further include having second temperature
Acquiring unit；
The second temperature acquiring unit is connect with described control unit signal, for obtaining the air-conditioning for the practical confession of cold end
Cold temperature T4, and the temperature results that will acquire are delivered to described control unit, described control unit is according to by the second temperature
The temperature results that acquiring unit transmits control the switch of first refrigeration host computer.
5. air-conditioning system according to claim 4, which is characterized in that further include having second temperature comparing unit；
If air-conditioning is T for the cooling supply target water temperature of cold end5, the first refrigeration host computer opening temperature be T6, first refrigeration host computer stops
Machine temperature is TY；
The second temperature comparing unit is connect with the second temperature acquiring unit and described control unit signal respectively, is used for
Compare T4With T5+T6And T4With T5+TY, and comparison result is exported to described control unit, described control unit is according to by described
The comparison result that second temperature comparing unit transmits controls the switch of first refrigeration host computer.
6. air-conditioning system according to claim 1, which is characterized in that further include having electricity consumption period judging unit；
The electricity consumption period judging unit is connect with described control unit signal, for judging that the current power time is in electricity consumption height
The peak period, with the specific period in level peak period and low power consumption period, and judging result is exported to described control unit,
Described control unit controls first refrigeration host computer and institute according to the judging result transmitted by the electricity consumption period judging unit
State the second refrigeration host computer switch.
7. a kind of control method of air-conditioning system, which comprises the steps of:
Water storage container cold-storage:
Second refrigeration host computer, which is opened, carries out cold-storage to the water in water storage container；
Water storage container is let cool:
Cold water in water storage container enters in heat exchanger through the 4th watering cycle pipeline, and in the second watering cycle pipeline
Hot water carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning for cold end by the second watering cycle pipeline；
First refrigeration host computer supplying cold directly:
It opens the first cooling supply host and supplies cold water for cold end to air-conditioning；
If electricity consumption period judging unit judges that the current power time was in the low power consumption period, then the is opened by control unit
Two refrigeration host computers cold-storage into water storage container；
Such as during water storage container cold-storage, comparison judgment unit, which compares, obtains R < R1, R2> 0 then opens water storage container and puts
It is cold；
The peak of power consumption period is in or in the level peak period as electricity consumption period judging unit judges the current power time, and is compared
Judging unit, which compares, obtains R < R1, R2> 0 then individually opens water storage container and lets cool；
The peak of power consumption period is in or in the level peak period as electricity consumption period judging unit judges the current power time, and is compared
Judging unit, which compares, obtains R1+R3> R > R1, R2> 0 also passes through the first refrigeration master then while unlatching water storage container is let cool
Machine supplying cold directly；
The peak of power consumption period is in or in the level peak period as electricity consumption period judging unit judges the current power time, and is compared
Judging unit, which compares, obtains R < R3, R2=0, then directly pass through the first refrigeration host computer cooling supply.
8. control method according to claim 7, which is characterized in that further include following steps, the second refrigeration host computer is direct
Cooling supply:
It opens the second cooling supply host and supplies cold water to the 5th watering cycle pipeline, and pass through heat exchanger and the second watering cycle pipe
Hot water in road carries out heat exchange, and the cold water of acquisition is delivered to air-conditioning for cold end by the second watering cycle pipeline.
9. control method according to claim 8, which is characterized in that further include following steps, in water storage container cold-storage
Meanwhile also passing through the second refrigeration host computer supplying cold directly.
10. control method according to claim 8, which is characterized in that further include following steps, let cool in water storage container
Meanwhile also passing through the second refrigeration host computer supplying cold directly.
11. according to control method described in claim 8-10 any claim, which is characterized in that it further include following steps,
First refrigeration host computer and the second refrigeration host computer are combined to air-conditioning for cold end cooling supply.
12. control method according to claim 11, which is characterized in that as electricity consumption period judging unit judges current power
Time is in the peak of power consumption period or in the level peak period, and comparison judgment unit compares and obtains R > R1+R3, R2> 0, then exist
While unlatching water storage container is let cool, also pass through the first refrigeration host computer and the second refrigeration host computer air conditioning.
13. control method according to claim 11, which is characterized in that as electricity consumption period judging unit judges current power
Time is in the peak of power consumption period or in the level peak period, and comparison judgment unit compares and obtains R > R3, R2=0, then pass through
First refrigeration host computer and the second refrigeration host computer air conditioning.
14. control method according to claim 7, which is characterized in that as electricity consumption period judging unit judges current power
Time was in the low power consumption period, the actual temperature T that control unit is obtained from the first temperature acquiring unit1Higher than default temperature
Degree, then open the second refrigeration host computer cold-storage into water storage container.
15. control method according to claim 7, which is characterized in that in arbitrary period, as control unit is warm from second
The practical cooling temperature T obtained in degree acquiring unit4Higher than preset temperature, then the first refrigeration host computer supplying cold directly is opened.
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