CN107560086A - Control method, device and the central air-conditioning of central air conditioning cooling water system - Google Patents
Control method, device and the central air-conditioning of central air conditioning cooling water system Download PDFInfo
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- CN107560086A CN107560086A CN201710846437.0A CN201710846437A CN107560086A CN 107560086 A CN107560086 A CN 107560086A CN 201710846437 A CN201710846437 A CN 201710846437A CN 107560086 A CN107560086 A CN 107560086A
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The embodiment of the present invention provides a kind of control method of central air conditioning cooling water system, device and central air-conditioning, belongs to air-conditioning technical field.The central air-conditioning includes cooling tower, cooling water pump and handpiece Water Chilling Units, and this method includes：Diagram database is established according to the performance parameter of the equipment of the cooling water system, wherein the curve includes the curve relevant with the power of fan of the power of the handpiece Water Chilling Units, the power of the cooling water pump and the cooling tower；The curve of every group of performance data and the diagram database in n group performance datas determines total low-temperature receiver power Pn；With identified n total low-temperature receiver power PsnIn minimum value corresponding to performance data control the operation of the cooling water system, wherein, n is positive integer.Control method, device and the central air-conditioning of the central air conditioning cooling water system can make cooling water system reach the minimum state of total energy consumption.
Description
Technical field
The present invention relates to air-conditioning technical field, control method, device more particularly to central air conditioning cooling water system with
And central air-conditioning.
Background technology
Central air conditioner system structure is mainly made up of three parts：Refrigeration host computer, air-conditioner water system and air conditioning duct system.System
Cold main frame is the core of whole system, and it provides cold for whole system.Water system includes chilled water system and cooling water system.
The fan coil that chilled water system is responsible for the chilled water that refrigeration host computer comes out to be transported to building room carries out heat exchange, through overheat
The chilled water of exchange returns refrigeration host computer and freezed.Cooling water system main function is chilled water one by refrigeration host computer
The heat absorption at end is simultaneously input to cooling tower and cooled down, and returns the heat of refrigeration host computer absorption refrigerating water one end.
Cooling water system in its grey water system includes chilled(cooling) water return (CWR) and cooling tower loop two parts, in chilled(cooling) water return (CWR)
In, the water supply of condenser is transmitted by water pump, realizes the heat exchange of cooling backwater and refrigerant.In cooling tower loop, from condensation
The cooling water that device comes out carries amount of heat, is exchanged heat in cooling tower with surrounding environment, realizes cooling.
The blower fan or cooling water pump frequency of cooling tower gradually increase the increase that on the one hand can bring cooling water system energy consumption, separately
On the one hand the raising of handpiece Water Chilling Units heat exchange property can be brought, efficiency COP can increase always, and the energy consumption of handpiece Water Chilling Units can reduce.This
Application inventor has found that prior art, which has no, considers a variety of energy consumptions to control cooling during the present invention is realized
The technical scheme of water system energy consumption.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of control method of central air conditioning cooling water system, device and center
Air-conditioning, control method, device and the central air-conditioning of the central air conditioning cooling water system can make cooling water system reach total energy
Consume minimum state.
To achieve these goals, the embodiment of the present invention provides a kind of control method of central air conditioning cooling water system, should
Central air-conditioning includes cooling tower, cooling water pump and handpiece Water Chilling Units, and this method includes：According to the property of the equipment of the cooling water system
Energy parameter establishes diagram database, wherein the curve includes the power with the power of the handpiece Water Chilling Units, the cooling water pump
And the relevant curve of power of fan of the cooling tower；Every group of performance data and the curve in n group performance datas
The curve of database determines total low-temperature receiver power Pn；With identified n total low-temperature receiver power PsnIn minimum value corresponding to performance
Data control the operation of the cooling water system, wherein, n is positive integer.
Preferably, every group of performance data includes：The leaving water temperature T of the cooling towern, the cooling tower water supply temperature
Spend TFor, the outdoor wet-bulb temperature TOutside, the load Q of the handpiece Water Chilling Units, setting temperature difference △ T, described cold of the cooling water pump
But the rated power P of water pumpVolume 1With the blower fan rated power P of the cooling towerVolume 2。
Preferably, total low-temperature receiver power P is determinednIncluding：According to the leaving water temperature T of the cooling towern, the cooling tower
Supply water temperature TForThe power P of the handpiece Water Chilling Units is determined with the load Q of the handpiece Water Chilling UnitsCold n；According to the handpiece Water Chilling Units
Power PCold n, the handpiece Water Chilling Units load Q, setting temperature difference △ T, the outdoor wet-bulb temperature T of the cooling water pumpOutside, it is described
The rated power P of cooling water pumpVolume 1, the cooling tower blower fan rated power PVolume 2Determine the power P of cooling water pumpn1And cooling tower
Power of fan Pn2；According to the power P of the cooling water pumpn1, the cooling tower power of fan Pn2With the handpiece Water Chilling Units
Power PCold nDetermine total low-temperature receiver power P of the cooling water systemn。
Preferably, the power P of the cooling water pump is determinedn1With the power of fan P of the cooling towern2Including：According to described
The power P of handpiece Water Chilling UnitsCold n, the load Q of the handpiece Water Chilling Units and the setting temperature difference △ T of the cooling water pump determine the cooling
The frequency F of water pumpn1；According to the power P of the handpiece Water Chilling UnitsIt is coldN, the load Q of the handpiece Water Chilling Units and the outdoor wet-bulb temperature
TOutsideDetermine the blower fan frequency F of the cooling towern2；According to the frequency F of the cooling water pumpn1With the specified work(of the cooling water pump
Rate PVolume 1Determine the power P of the cooling water pumpn1；According to the blower fan frequency F of the cooling towern2With the blower fan volume of the cooling tower
Determine power PVolume 2Determine the power of fan P of the cooling towern2。
Preferably, it is described with identified n total low-temperature receiver power PsnIn minimum value corresponding to performance data control described in
The operation of cooling water system includes：Control the blower fan of the cooling tower with identified n total low-temperature receiver power PsnIn minimum
The blower fan frequency operation of cooling tower corresponding to value, and control the cooling water pump with identified n total low-temperature receiver power PsnIn
Minimum value corresponding to cooling water pump frequency operation.
The present invention also provides a kind of control device of central air conditioning cooling water system, and the central air-conditioning includes cooling tower, cold
But water pump and handpiece Water Chilling Units, the device include：Processing unit and control unit, wherein, the processing unit is used for according to
The performance parameter of the equipment of cooling water system establishes diagram database, wherein the curve includes the work(with the handpiece Water Chilling Units
The relevant curve of the power of fan of rate, the power of the cooling water pump and the cooling tower；It is every in n group performance datas
The curve of group performance data and the diagram database determines total low-temperature receiver power Pn；Described control unit is used for be determined
The total low-temperature receiver power Ps of nnIn minimum value corresponding to performance data control the operation of the cooling water system, wherein, n is just
Integer.
Preferably, every group of performance data includes：The leaving water temperature T of the cooling towern, the cooling tower water supply temperature
Spend TFor, the outdoor wet-bulb temperature TOutside, the load Q of the handpiece Water Chilling Units, setting temperature difference △ T, described cold of the cooling water pump
But the rated power P of water pumpVolume 1With the blower fan rated power P of the cooling towerVolume 2。
Preferably, described control unit is additionally operable to：According to the leaving water temperature T of the cooling towern, the cooling tower water supply
Temperature TForThe power P of the handpiece Water Chilling Units is determined with the load Q of the handpiece Water Chilling UnitsCold n；According to the power of the handpiece Water Chilling Units
PCold n, the handpiece Water Chilling Units load Q, setting temperature difference △ T, the outdoor wet-bulb temperature T of the cooling water pumpOutside, the cooling
The rated power P of water pumpVolume 1, the cooling tower blower fan rated power PVolume 2Determine the power P of cooling water pumpn1With the wind of cooling tower
Acc power Pn2；According to the power P of the cooling water pumpn1, the cooling tower power of fan Pn2With the power of the handpiece Water Chilling Units
PCold nDetermine total low-temperature receiver power P of the cooling water systemn。
Preferably, described control unit is additionally operable to：According to the power P of the handpiece Water Chilling UnitsCold n, the handpiece Water Chilling Units it is negative
The setting temperature difference △ T of lotus Q and the cooling water pump determine the frequency F of the cooling water pumpn1；According to the power of the handpiece Water Chilling Units
PCold n, the handpiece Water Chilling Units load Q and the outdoor wet-bulb temperature TOutsideDetermine the blower fan frequency F of the cooling towern2；According to institute
State the frequency F of cooling water pumpn1With the rated power P of the cooling water pumpVolume 1Determine the power P of the cooling water pumpn1；According to institute
State the blower fan frequency F of cooling towern2With the blower fan rated power P of the cooling towerVolume 2Determine the power of fan P of the cooling towern2。
Preferably, described control unit is additionally operable to：Control the blower fan of the cooling tower with identified n total low-temperature receiver work(
Rate PnIn minimum value corresponding to cooling tower the operation of blower fan frequency, and control the cooling water pump with identified n it is total
Low-temperature receiver power PnIn minimum value corresponding to cooling water pump frequency operation.
The embodiment of the present invention also provides a kind of central air-conditioning, and the central air-conditioning includes central air-conditioner cooling water described above
The control device of system.
Pass through above-mentioned technical proposal, use control method, the device of central air conditioning cooling water system provided by the invention with
And central air-conditioning, this method include：Diagram database is established according to the performance parameter of the equipment of the cooling water system, wherein institute
Curve is stated including relevant with the power of fan of the power of the handpiece Water Chilling Units, the power of the cooling water pump and the cooling tower
Curve；The curve of every group of performance data and the diagram database in n group performance datas determines total low-temperature receiver work(
Rate Pn；With identified n total low-temperature receiver power PsnIn minimum value corresponding to performance data control the fortune of the cooling water system
OK, wherein, n is positive integer.By calculating the energy consumption of each cooling tower leaving water temperature, find cooling water optimum state and correspond to most preferably
Cooling tower leaving water temperature, the frequency of the blower fan and cooling water pump that regulate and control cooling tower make cooling water system reach the minimum shape of total energy consumption
State.
The further feature and advantage of the embodiment of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is that the embodiment of the present invention is further understood for providing, and a part for constitution instruction, with
The embodiment in face is used to explain the embodiment of the present invention together, but does not form the limitation to the embodiment of the present invention.Attached
In figure：
Fig. 1 is the flow chart of the control method for the central air conditioning cooling water system that one embodiment of the invention provides；
Fig. 2 is the stream of the total low-temperature receiver power determining method for the central air conditioning cooling water system that one embodiment of the invention provides
Cheng Tu；
Fig. 3 is the power and cooling tower of the cooling water pump for the central air conditioning cooling water system that one embodiment of the invention provides
The flow chart of the determination method of power of fan；
Fig. 4 is the flow chart of the control method for the central air conditioning cooling water system that another embodiment of the present invention provides；
Fig. 5 is the flow chart of the control device for the central air conditioning cooling water system that another embodiment of the present invention provides.
Description of reference numerals
The control unit of 1 processing unit 2.
Embodiment
The embodiment of the embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this
The embodiment of place description is merely to illustrate and explain the present invention embodiment, is not intended to limit the invention embodiment.
Fig. 1 is the flow chart of the control method for the central air conditioning cooling water system that one embodiment of the invention provides.Such as Fig. 1 institutes
Show, central air-conditioning includes cooling tower, cooling water pump and handpiece Water Chilling Units, and this method includes：According to the equipment of the cooling water system
Performance parameter establish diagram database, wherein the curve includes and the power of the handpiece Water Chilling Units, the cooling water pump
The relevant curve (step S11) of the power of fan of power and the cooling tower；Every group of performance number in n group performance datas
Total low-temperature receiver power P is determined according to the curve with the diagram databasen(step S12)；With identified n total low-temperature receiver power
PnIn minimum value corresponding to performance data control the operation (step S13) of the cooling water system, wherein, n is positive integer.
In the present embodiment, the performance parameter of equipment can include：The leaving water temperature T of cooling towern, cooling tower water supply temperature
Spend TFor, outdoor wet-bulb temperature TOutside, handpiece Water Chilling Units load Q, setting temperature difference △ T, the rated power of cooling water pump of cooling water pump
PVolume 1With the blower fan rated power P of cooling towerVolume 2, cooling water pump frequency Fn1, cooling tower blower fan frequency Fn2Deng.
According to above-mentioned performance parameter, the collection study of a period of time is carried out, forms the power P for including handpiece Water Chilling UnitsCold n, it is cold
But the power P of water pumpn1And the power of fan P of cooling towern2Deng perfect diagram database, wherein curve can at least have
There is following functional relation：
PCold n=f1((Tn-TFor), Q), the power P of handpiece Water Chilling UnitsCold nWith the leaving water temperature T for the cooling tower for entering condensernWith
Go out the supply water temperature T of the chilled water of evaporatorForDifference and handpiece Water Chilling Units load Q it is relevant, preferred conic section relation.
Pn2=PVolume 2f2(Fn2), the power of fan P of cooling towern2With the blower fan rated power P of cooling towerVolume 2And cooling tower
Blower fan frequency Fn2It is relevant, preferred cubic curve relation.
Pn1=PVolume 1f3(Fn1), the power P of cooling water pumpn1With the rated power P of cooling water pumpVolume 1And the frequency of cooling water pump
Rate Fn1It is relevant, preferred cubic curve relation.
Tn=f4(Fn2,Fn1,TOutside), the leaving water temperature T of cooling towernThe air quantity change brought with the blower fan of cooling tower, cooling
The water change that water pump is brought, the heat-exchange temperature that outdoor wet-bulb temperature is brought is relevant, in the frequency F of cooling water pumpn1It is wet with outdoor
Ball temperature TOutsideCan be once linear relationship in the case of all determining.
In addition, balanced according to thermal discharge, cooling water pump is controlled using the temperature difference, has a fixed setting temperature difference, and then can be with
The frequency F of cooling water pump is calculatedn1.And thermal discharge is all identical in cooling water transmit process and cooling tower radiation processes
, and then can be in the hope of the blower fan frequency F of cooling towern2。
QHeat release=PCold n+ Q=Δs Tf5(Fn1)；
QHeat release=PCold n+ Q=f6(Fn2,TOutside)。
In the present embodiment, using above-mentioned curved line relation, according to following performance data, n total low-temperature receiver power can be obtained
Pn, each total low-temperature receiver power PnObtained according to one group of performance data, every group of performance data includes：
The leaving water temperature T of cooling towern, the cooling tower supply water temperature TFor, the outdoor wet-bulb temperature TOutside, the cold water
The load Q of unit, setting temperature difference △ T of the cooling water pump, the rated power P of the cooling water pumpVolume 1With the cooling tower
Blower fan rated power PVolume 2, above-mentioned performance data can obtain by the mode such as detecting and inquiring about.
Find n total low-temperature receiver power PsnIn minimum value, and use total low-temperature receiver power PnMinimum value corresponding to performance data
Control the operation of cooling water system.When a certain degree of change occurs for operating mode, it is necessary to redefine total low-temperature receiver power PnIn
Minimum value.
Wherein, in embodiments of the present invention, the leaving water temperature T of n cooling tower can be setn, wherein initial value (i.e. first
It is secondary to bring curved line relation into) can be cooling tower leaving water temperature lower limit (outdoor wet-bulb temperature TOutsideWith approach the temperature difference and), and
Bring the leaving water temperature T of cooling tower intonWhen with reference to following relation：
Tn+1=Tn+ A, i.e., the leaving water temperature of cooling tower is added into a fixed value every time；
In these cases, total low-temperature receiver power P is judgednMinimum value can be in the following ways：Constantly bring cooling tower into
Leaving water temperature Tn, P is found in first timen+1＞ PnWhen, then it is assumed that PnAs minimum value.
Fig. 2 is the stream of the total low-temperature receiver power determining method for the central air conditioning cooling water system that one embodiment of the invention provides
Cheng Tu.As shown in Fig. 2 this method includes：According to the leaving water temperature T of the cooling towern, the cooling tower supply water temperature TForWith
The load Q of the handpiece Water Chilling Units determines the power P of the handpiece Water Chilling UnitsCold n(step S21)；According to the power of the handpiece Water Chilling Units
PCold n, the handpiece Water Chilling Units load Q, setting temperature difference △ T, the outdoor wet-bulb temperature T of the cooling water pumpOutside, the cooling
The rated power P of water pumpVolume 1, the cooling tower blower fan rated power PVolume 2Determine the power P of cooling water pumpn1With the wind of cooling tower
Acc power Pn2(step S22)；According to the power P of the cooling water pumpn1, the cooling tower power of fan Pn2With the cold water
The power P of unitCold nDetermine total low-temperature receiver power P of the cooling water systemn(step S23).
In the present embodiment, by using performance data：The leaving water temperature T of cooling towern, cooling tower supply water temperature TForWith
The load Q of handpiece Water Chilling Units, and utilize the functional relation P of curve described aboveCold n=f1((Tn-TFor), Q), it may be determined that cold water
The power P of unitCold n, and it is determined that handpiece Water Chilling Units power PCold nOn the basis of, obtain the power P of cooling water pumpn1And cooling
The power of fan P of towern2, add the power P with handpiece Water Chilling UnitsCold n, cooling water pump power Pn1With the power of fan P of cooling towern2Can
To obtain total low-temperature receiver power Pn。
Fig. 3 is the power and cooling tower of the cooling water pump for the central air conditioning cooling water system that one embodiment of the invention provides
The flow chart of the determination method of power of fan.As shown in figure 3, this method includes：According to the power P of the handpiece Water Chilling UnitsCold n, institute
The load Q and the cooling water pump that state handpiece Water Chilling Units setting temperature difference △ T determine the frequency F of the cooling water pumpn1(step
S31)；According to the power P of the handpiece Water Chilling UnitsCold n, the handpiece Water Chilling Units load Q and the outdoor wet-bulb temperature TOutsideDetermine institute
State the blower fan frequency F of cooling towern2(step S32)；According to the frequency F of the cooling water pumpn1With the specified work(of the cooling water pump
Rate PVolume 1Determine the power P of the cooling water pumpn1(step S33)；According to the blower fan frequency F of the cooling towern2With the cooling tower
Blower fan rated power PVolume 2Determine the power of fan P of the cooling towern2(step S34).
In the present embodiment, there is provided the power P of cooling water pumpn1With the power of fan P of cooling towern2Acquisition pattern.
By using the power P of handpiece Water Chilling UnitsCold n, the load Q of handpiece Water Chilling Units and the setting temperature difference △ T of cooling water pump, and profit
With the functional relation Q of curve described aboveHeat release=PCold n+ Q=Δs Tf5(Fn1), it may be determined that the frequency F of cooling water pumpn1；
By using the power P of handpiece Water Chilling UnitsCold n, handpiece Water Chilling Units load Q and outdoor wet-bulb temperature TOutside, and using above
The functional relation Q of described curveHeat release=PCold n+ Q=f6(Fn2,TOutside), it may be determined that the blower fan frequency F of cooling towern2；
By using the frequency F of cooling water pumpn1With the rated power P of cooling water pumpVolume 1, utilize curve described above
Functional relation Pn1=PVolume 1f3(Fn1), it may be determined that the power P of cooling water pumpn1；
By using the blower fan frequency F of cooling towern2With the blower fan rated power P of cooling towerVolume 2, utilize song described above
The functional relation P of linen2=PVolume 2f2(Fn2), it may be determined that the power of fan P of cooling towern2。
Fig. 4 is the flow chart of the control method for the central air conditioning cooling water system that another embodiment of the present invention provides.Such as Fig. 4
Shown, this method includes：Diagram database is established according to the performance parameter of the equipment of the cooling water system, wherein the curve
The relevant curve of power of fan including the power with the handpiece Water Chilling Units, the power of the cooling water pump and the cooling tower
(step S41)；The curve of every group of performance data and the diagram database in n group performance datas determines total low-temperature receiver
Power Pn(step S42)；Control the blower fan of the cooling tower with identified n total low-temperature receiver power PsnIn minimum value it is corresponding
Cooling tower the operation of blower fan frequency, and control the cooling water pump with identified n total low-temperature receiver power PsnIn minimum
The frequency operation of cooling water pump corresponding to value, wherein, n is positive integer (step S43).
When system equipment status is immovable, and indoor load, chilled water supply water temperature and room in a period of time
When outer wet-bulb temperature all determines, total low-temperature receiver power PnWith the frequency F of cooling water pumpn1With the blower fan frequency F of cooling towern2Have
Close.Therefore in the present embodiment, when it is determined that total low-temperature receiver power PnMinimum value after, can from determine the minimum value mistake
The frequency of cooling water pump corresponding to the minimum value and the blower fan frequency of cooling tower are obtained in journey, and controls the blower fan of cooling tower with this
The blower fan frequency operation of cooling tower, and control the cooling water pump to be run with the frequency of the cooling water pump, so that cooling water system
Reach the minimum state of total energy consumption.If for example, total low-temperature receiver power PnMinimum value be P5, then cooling water pump is controlled with F51Fortune
OK, the blower fan of cooling tower is controlled with F52Operation.
Fig. 5 is the flow chart of the control device for the central air conditioning cooling water system that another embodiment of the present invention provides.Such as Fig. 5
Shown, the present invention also provides a kind of control device of central air conditioning cooling water system, and the central air-conditioning includes cooling tower, cooling water
Pump and handpiece Water Chilling Units, the device include：Processing unit 1 and control unit 2, wherein, the processing unit 1 is used for according to described cold
But the performance parameter of the equipment of water system establishes diagram database, wherein the curve include with the power of the handpiece Water Chilling Units,
The relevant curve of the power of fan of the power of the cooling water pump and the cooling tower；According to every group in n group performance datas
The curve of performance data and the diagram database determines total low-temperature receiver power Pn；Described control unit 2 is used for be determined
The total low-temperature receiver power Ps of nnIn minimum value corresponding to performance data control the operation of the cooling water system, wherein, n is just
Integer.
Preferably, every group of performance data includes：The leaving water temperature T of the cooling towern, the cooling tower water supply temperature
Spend TFor, the outdoor wet-bulb temperature TOutside, the load Q of the handpiece Water Chilling Units, setting temperature difference △ T, described cold of the cooling water pump
But the rated power P of water pumpVolume 1With the blower fan rated power P of the cooling towerVolume 2。
Preferably, described control unit 2 is additionally operable to：According to the leaving water temperature T of the cooling towern, the cooling tower confession
Coolant-temperature gage TForThe power P of the handpiece Water Chilling Units is determined with the load Q of the handpiece Water Chilling UnitsCold n；According to the power of the handpiece Water Chilling Units
PCold n, the handpiece Water Chilling Units load Q, setting temperature difference △ T, the outdoor wet-bulb temperature T of the cooling water pumpOutside, the cooling
The rated power P of water pumpVolume 1, the cooling tower blower fan rated power PVolume 2Determine the power P of cooling water pumpn1With the wind of cooling tower
Acc power Pn2；According to the power P of the cooling water pumpn1, the cooling tower power of fan Pn2With the power of the handpiece Water Chilling Units
PCold nDetermine total low-temperature receiver power P of the cooling water systemn。
Preferably, described control unit 2 is additionally operable to：According to the power P of the handpiece Water Chilling UnitsCold n, the handpiece Water Chilling Units it is negative
The setting temperature difference △ T of lotus Q and the cooling water pump determine the frequency F of the cooling water pumpn1；According to the power of the handpiece Water Chilling Units
PCold n, the handpiece Water Chilling Units load Q and the outdoor wet-bulb temperature TOutsideDetermine the blower fan frequency F of the cooling towern2；According to institute
State the frequency F of cooling water pumpn1With the rated power P of the cooling water pumpVolume 1Determine the power P of the cooling water pumpn1；According to institute
State the blower fan frequency F of cooling towern2With the blower fan rated power P of the cooling towerVolume 2Determine the power of fan P of the cooling towern2。
Preferably, described control unit 2 is additionally operable to：Control the blower fan of the cooling tower with identified n total low-temperature receivers
Power PnIn minimum value corresponding to cooling tower the operation of blower fan frequency, and control the cooling water pump with identified n
Total low-temperature receiver power PnIn minimum value corresponding to cooling water pump frequency operation.
The embodiment of the present invention also provides a kind of central air-conditioning, and the central air-conditioning includes central air-conditioner cooling water described above
The control device of system.
Pass through above-mentioned technical proposal, use control method, the device of central air conditioning cooling water system provided by the invention with
And central air-conditioning, by calculating the energy consumption of each cooling tower leaving water temperature, find cooling water optimum state and correspond to optimal cooling tower
Leaving water temperature, the frequency of the blower fan and cooling water pump that regulate and control cooling tower make cooling water system reach the minimum state of total energy consumption.
The optional embodiment of the embodiment of the present invention is described in detail above in association with accompanying drawing, still, the embodiment of the present invention is simultaneously
The detail being not limited in above-mentioned embodiment, can be to of the invention real in the range of the technology design of the embodiment of the present invention
The technical scheme for applying example carries out a variety of simple variants, and these simple variants belong to the protection domain of the embodiment of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the embodiment of the present invention pair
Various combinations of possible ways no longer separately illustrate.
It will be appreciated by those skilled in the art that realize that all or part of step in above-described embodiment method is to pass through
Program instructs the hardware of correlation to complete, and the program storage is in the storage medium, including some instructions are causing list
Piece machine, chip or processor (processor) perform all or part of step of each embodiment methods described of the application.It is and preceding
The storage medium stated includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), random access memory
(RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.
In addition, it can also be combined between a variety of embodiments of the embodiment of the present invention, as long as it is not
The thought of the embodiment of the present invention is run counter to, it should equally be considered as disclosure of that of the embodiment of the present invention.
Claims (11)
1. a kind of control method of central air conditioning cooling water system, the central air-conditioning includes cooling tower, cooling water pump and cooling-water machine
Group, it is characterised in that this method includes：
Diagram database is established according to the performance parameter of the equipment of the cooling water system, wherein the curve include with it is described cold
The relevant curve of the power of fan of the power of water dispenser group, the power of the cooling water pump and the cooling tower；
The curve of every group of performance data and the diagram database in n group performance datas determines total low-temperature receiver power Pn；
With identified n total low-temperature receiver power PsnIn minimum value corresponding to performance data control the operation of the cooling water system,
Wherein, n is positive integer.
2. the control method of central air conditioning cooling water system according to claim 1, it is characterised in that every group of performance
Data include：
The leaving water temperature T of the cooling towern, the cooling tower supply water temperature TFor, the outdoor wet-bulb temperature TOutside, the cold water
The load Q of unit, setting temperature difference △ T of the cooling water pump, the rated power P of the cooling water pumpVolume 1With the cooling tower
Blower fan rated power PVolume 2。
3. the control method of central air conditioning cooling water system according to claim 2, it is characterised in that determine described total cold
Source power PnIncluding：
According to the leaving water temperature T of the cooling towern, the cooling tower supply water temperature TForDetermined with the load Q of the handpiece Water Chilling Units
The power P of the handpiece Water Chilling UnitsCold n；
According to the power P of the handpiece Water Chilling UnitsCold n, the load Q of the handpiece Water Chilling Units, setting temperature difference △ T of the cooling water pump, institute
State outdoor wet-bulb temperature TOutside, the cooling water pump rated power PVolume 1, the cooling tower blower fan rated power PVolume 2It is determined that cooling
The power P of water pumpn1With the power of fan P of cooling towern2；
According to the power P of the cooling water pumpn1, the cooling tower power of fan Pn2With the power P of the handpiece Water Chilling UnitsCold nReally
Total low-temperature receiver power P of the fixed cooling water systemn。
4. the control method of central air conditioning cooling water system according to claim 3, it is characterised in that determine the cooling
The power P of water pumpn1With the power of fan P of the cooling towern2Including：
According to the power P of the handpiece Water Chilling UnitsCold n, the handpiece Water Chilling Units load Q and the cooling water pump setting temperature difference △ T it is true
The frequency F of the fixed cooling water pumpn1；
According to the power P of the handpiece Water Chilling UnitsCold n, the handpiece Water Chilling Units load Q and the outdoor wet-bulb temperature TOutsideIt is it is determined that described
The blower fan frequency F of cooling towern2；
According to the frequency F of the cooling water pumpn1With the rated power P of the cooling water pumpVolume 1Determine the power of the cooling water pump
Pn1；
According to the blower fan frequency F of the cooling towern2With the blower fan rated power P of the cooling towerVolume 2Determine the wind of the cooling tower
Acc power Pn2。
5. the control method of central air conditioning cooling water system according to claim 4, it is characterised in that described to be determined
The total low-temperature receiver power Ps of nnIn minimum value corresponding to performance data control the operation of the cooling water system to include：
Control the blower fan of the cooling tower with identified n total low-temperature receiver power PsnIn minimum value corresponding to cooling tower wind
Unit frequency is run, and control the cooling water pump with identified n total low-temperature receiver power PsnIn minimum value corresponding to cool down
The frequency operation of water pump.
6. a kind of control device of central air conditioning cooling water system, the central air-conditioning includes cooling tower, cooling water pump and cooling-water machine
Group, it is characterised in that the device includes：
Processing unit and control unit, wherein,
The processing unit is used to establish diagram database according to the performance parameter of the equipment of the cooling water system, wherein described
Curve includes relevant with the power of fan of the power of the handpiece Water Chilling Units, the power of the cooling water pump and the cooling tower
Curve；The curve of every group of performance data and the diagram database in n group performance datas determines total low-temperature receiver power
Pn；
Described control unit is used for identified n total low-temperature receiver power PsnIn minimum value corresponding to performance data control described in
The operation of cooling water system, wherein, n is positive integer.
7. the control device of central air conditioning cooling water system according to claim 6, it is characterised in that every group of performance
Data include：
The leaving water temperature T of the cooling towern, the cooling tower supply water temperature TFor, the outdoor wet-bulb temperature TOutside, the cold water
The load Q of unit, setting temperature difference △ T of the cooling water pump, the rated power P of the cooling water pumpVolume 1With the cooling tower
Blower fan rated power PVolume 2。
8. the control device of central air conditioning cooling water system according to claim 7, it is characterised in that described control unit
It is additionally operable to：
According to the leaving water temperature T of the cooling towern, the cooling tower supply water temperature TForDetermined with the load Q of the handpiece Water Chilling Units
The power P of the handpiece Water Chilling UnitsCold n；
According to the power P of the handpiece Water Chilling UnitsCold n, the load Q of the handpiece Water Chilling Units, setting temperature difference △ T of the cooling water pump, institute
State outdoor wet-bulb temperature TOutside, the cooling water pump rated power PVolume 1, the cooling tower blower fan rated power PVolume 2It is determined that cooling
The power P of water pumpn1With the power of fan P of cooling towern2；
According to the power P of the cooling water pumpn1, the cooling tower power of fan Pn2With the power P of the handpiece Water Chilling UnitsCold nReally
Total low-temperature receiver power P of the fixed cooling water systemn。
9. the control device of central air conditioning cooling water system according to claim 8, it is characterised in that described control unit
It is additionally operable to：
According to the power P of the handpiece Water Chilling UnitsCold n, the handpiece Water Chilling Units load Q and the cooling water pump setting temperature difference △ T it is true
The frequency F of the fixed cooling water pumpn1；
According to the power P of the handpiece Water Chilling UnitsCold n, the handpiece Water Chilling Units load Q and the outdoor wet-bulb temperature TOutsideIt is it is determined that described
The blower fan frequency F of cooling towern2；
According to the frequency F of the cooling water pumpn1With the rated power P of the cooling water pumpVolume 1Determine the power of the cooling water pump
Pn1；
According to the blower fan frequency F of the cooling towern2With the blower fan rated power P of the cooling towerVolume 2Determine the wind of the cooling tower
Acc power Pn2。
10. the control device of central air conditioning cooling water system according to claim 9, it is characterised in that the control is single
Member is additionally operable to：
Control the blower fan of the cooling tower with identified n total low-temperature receiver power PsnIn minimum value corresponding to cooling tower wind
Unit frequency is run, and control the cooling water pump with identified n total low-temperature receiver power PsnIn minimum value corresponding to cool down
The frequency operation of water pump.
11. a kind of central air-conditioning, it is characterised in that the central air-conditioning includes any one claim institute in claim 6-10
The control device for the central air conditioning cooling water system stated.
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