CN105352109B - VAV box temperature control system and method based on weather compensation - Google Patents
VAV box temperature control system and method based on weather compensation Download PDFInfo
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- CN105352109B CN105352109B CN201510634105.7A CN201510634105A CN105352109B CN 105352109 B CN105352109 B CN 105352109B CN 201510634105 A CN201510634105 A CN 201510634105A CN 105352109 B CN105352109 B CN 105352109B
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Abstract
The invention discloses a kind of VAV box temperature control system and method based on weather compensation, system includes host computer, terminal controller, wind pushing temperature controller, new trend controller, new air-valve, outdoor temperature sensor, indoor temperature transmitter, wind pushing temperature sensor, air velocity transducer, freezing water valve, data acquisition A I modules, data acquisition A O module, end air-valve, heat exchanger, pressure fan and VAV BOX.The VAV box temprature control method based on weather compensation of the present invention：Under every kind of resh air requirement setting value, determine that resh air requirement corresponds to matched curve；By matched curve and its corresponding resh air requirement setting value deposit matched curve database.The wind pushing temperature setting value that matched curve obtains is introduced into control system to be controlled.The present invention changes according to resh air requirement, the change of the demand of indoor user, outdoor temperature and the relation between system total energy consumption determine wind pushing temperature setting value optimal under different resh air requirements to run, and reaches the minimum purpose of system real time energy consumption.
Description
Technical field
The invention belongs to air conditioning system with variable field, and in particular to the Energy Saving Control of VAV box, particularly
A kind of VAV box temperature control system and method based on weather compensation.
Background technology
Air conditioning system with variable because the indoor air quality of system is good, sub-load when energy saving is superior and region control
System is flexible, is widely used in all kinds of offices, commercial building, but it is the energy consumption rich and influential family of modern building again.It is typically basis
Max calculation load designs, and meets user's request by the way of fixed wind pushing temperature changes air output, it is impossible to room
The change of outer temperature changes wind pushing temperature setting value.The size of resh air requirement influences IAQ, influences the big of system loading
It is small, while also influence the size of system energy consumption.Fresh air makes up to the acceptable concentration of user with pollutant concentration in dilution chamber
For standard.Region fresh air demand is directly proportional to user number, directly proportional to air output.In practice, the outdoor climate moment is becoming
Change, directly affect the size of new wind load.If wind pushing temperature setting value can not be changed in time to mend according to the change of outdoor temperature
Wind pushing temperature is repaid, indoor supercooling or superheating phenomenon can be caused, it is impossible to effectively meets that user uses cold heat under a variety of weather conditions
Demand.As can be seen here, it is imperative to study a kind of energy-saving scheme of air quantity variable air conditioner.
At present, the weather compensation energy-conserving control technology of central air conditioner system mainly has two classes：
The first kind：By adjusting the operational factor of handpiece Water Chilling Units, central air conditioner system is changed according to external climate and adjust
Handpiece Water Chilling Units chilled water supply water temperature realizes energy-conservation；Specifically climate compensation controller is by gathering indoor temperature, outdoor warm and humid
Degree, cold running state parameter, by finding the best operating point of cold from the algorithm of optimizing, and calculate each equipment of water system
Frequency optimum traffic, control are allowed to run under frequency optimum traffic, so as to adjust chilled water supply water temperature, realize energy-conservation.Example
Such as：Application No. 200810118088.1, entitled " weather compensating controller for central air-conditioner and central air-conditioning weather compensation side
The Chinese patent application of method ".Although the method in this application realizes the energy-conservation of water system to a certain extent, do not account for
Outdoor climate changes the influence to wind system.
Second class：By setting regulating valve on system water supply pipeline, regulating valve is controlled by actuator, actuator passes through
Radiator valve is adjusted, sets thermal signal terminal on radiator valve, and radiator valve is by controlling the aperture of actuator
The adjustment of flow of inlet water is realized so as to control supply backwater temperature difference.Such as：Application No. 200910157033.6, entitled integrated gas
The patent application for the temperature of heating and ventilating return water control power-economizing method that candidate is repaid.This method is equally that only considered external climate change pair
The influence of water system, the influence to wind system is not considered.
The content of the invention
Only consider that external climate change is not considered the influence of water system based on existing weather compensation energy-conserving control technology
Influence to wind system so that the problem of Energy Saving of Central Air-conditioning effect difference, it is an object of the present invention to propose that one kind is based on
The VAV box temperature control system of weather compensation.
The technical solution adopted for the present invention to solve the technical problems is as follows in order to achieve the above object：
A kind of energy-saving control system for VAV box, including host computer, terminal controller, wind pushing temperature control
Device processed, new trend controller, new air-valve, outdoor temperature sensor, indoor temperature transmitter, wind pushing temperature sensor, wind speed sensing
Device, freezing water valve, data acquisition A I modules, data acquisition A O module, end air-valve, heat exchanger, pressure fan and VAV BOX 17.
Wherein, host computer is connected with terminal controller, wind pushing temperature controller and new trend controller；The input of terminal controller point
Data acquisition A I modules not with indoor temperature transmitter, air velocity transducer are connected, output end and the end wind of terminal controller
The data acquisition A O module of valve is connected；The input of wind pushing temperature controller and the data acquisition A I modules of wind pushing temperature sensor
It is connected, the output end of wind pushing temperature controller is connected with freezing the data acquisition A O module of water valve；The input of new trend controller
It is connected with the data acquisition A I modules of new air-valve and outdoor temperature sensor, the output end of new trend controller and the number of new air-valve
It is connected according to collection AO modules；Outdoor temperature sensor, indoor temperature transmitter, wind pushing temperature sensor, the electricity of air velocity transducer
The input of flow pattern output end data acquisition A I modules corresponding with itself respectively is connected；New air-valve, freezing water valve, end air-valve
The input of voltage type output terminal data acquisition A I modules corresponding with itself respectively is connected；End air-valve voltage-type input,
Freeze the output end of water valve current mode input, new air-valve voltage-type input data acquisition A O module corresponding with itself respectively
It is connected；Data acquisition A I modules connect host computer and its corresponding sensor, data acquisition A O module connection host computer and its right
The performs device answered.
The new air-valve, outdoor temperature sensor are arranged at fresh air inlet airduct；End air-valve is arranged on VAV BOX
It is interior；Indoor temperature transmitter is arranged in the room of end；Wind pushing temperature sensor is arranged in ajutage；Air velocity transducer is installed
In VAV BOX airduct；Water valve is freezed to be arranged on heat exchanger water return pipeline.
It is a further object of the invention to provide a kind of VAV box temperature control side based on weather compensation
Method, comprise the following steps：
Step 1：Under the setting value of every kind of resh air requirement, every group of outdoor temperature, indoor temperature setting value and air-supply temperature are determined
System total power consumption minimum value under the combination of setting value is spent, and the wind pushing temperature obtained corresponding to system total power consumption minimum value is set
Definite value, as optimal wind pushing temperature setting value；Using outdoor temperature and indoor temperature setting value as independent variable, by optimal air-supply temperature
Setting value is spent as dependent variable, obtains corresponding matched curve under current resh air requirement operating mode；By matched curve and its corresponding
Resh air requirement setting value is stored in matched curve database.
Step 2：Current resh air requirement is gathered, matched curve corresponding with the resh air requirement is found out from matched curve database；
Current outdoor temperature and indoor temperature setting value are gathered, and wind pushing temperature setting value is obtained by matched curve；The air-supply that will be obtained
Desired temperature introduces control system and is controlled.
Further, comprise the following steps that：
Step 11：Current resh air requirement is judged whether in setting range, is then to perform step 12, is otherwise terminated；
Step 12：Current outdoor temperature is judged whether in set interval, is then to perform step 13；Otherwise step is performed
17；
Step 13：Current indoor temperature setting value is judged whether in set interval, is then to perform step 14；Otherwise perform
Step 16；
Step 14：Under every kind of wind pushing temperature setting value, when system run all right, acquisition system total power consumption, obtain
Wind pushing temperature setting value corresponding to system total power consumption minimum value, as optimal wind pushing temperature setting value；Perform step 15；
Step 15：Indoor temperature setting value after one step-length of indoor temperature setting value raising is updated；Perform step
Rapid 13；
Step 16：Current outdoor temperature after one step-length of outdoor temperature raising is updated；Perform step 12；
Step 17：Using outdoor temperature and indoor temperature setting value as independent variable, using optimal wind pushing temperature setting value as
Dependent variable, obtain corresponding matched curve under current resh air requirement operating mode；By matched curve and its deposit fitting of corresponding resh air requirement
Diagram database；Perform step 18；
Step 18：Current resh air requirement after one step-length of current resh air requirement raising is updated；Perform step 11.
Further, in the step 11, the resh air requirement is not less than the 10% of total air output, i.e. fresh air valve opening is not small
In 10%.
Further, in the step 13, the scope of the indoor temperature setting value is 18-21 DEG C.
Further, in the step 14, the wind pushing temperature setting range is 26-33 DEG C.
Further, the step 2 comprises the following steps that：
Step 21：Current resh air requirement is gathered, matched curve corresponding with the resh air requirement is found out from matched curve database；
Step 22：Current outdoor temperature and indoor temperature setting value are gathered, will be substituted into both as independent variable in step 21
In the curve found, optimal wind pushing temperature setting value is obtained.
Step 23：Obtained wind pushing temperature setting value introducing control system is controlled.Now, the total energy consumption of system shows
So it is in minimum value.
Step 24：Judge whether default control detection time reaches, repeated if reaching more than execution step 21-23.
Beneficial effects of the present invention are as follows：
1st, weather compensation of the invention regulation medium is wind, and new air temperature is outdoor temperature, and the size of resh air requirement is direct
The size of system loading is influenceed, also just influences the size of system total energy consumption, so influence of the resh air requirement to whole process is very big,
Outdoor air volume upon indoor environmental quality has direct influence simultaneously.In the present invention, host computer passes through the size to current resh air requirement, room
The continuous monitoring of outer temperature and user determine current optimal wind pushing temperature setting value to the demand of indoor temperature, and then by giving
Air temperature controller controls the aperture of water valve, regulating water flow, realizes wind pushing temperature and outdoor temperature in air conditioning system with variable
The automatic climate compensation of change, reaching wind pushing temperature needs the change of cold heat amount with user and changes, and realizes cooling on demand/heat
Target, energy-conservation is realized while ensureing to supply cold heat quality.
2nd, existing weather compensation method is the design temperature by the cold consumption curve of building construction and user, calculates and uses
The chilling requirement at family, effective operating point of cold is then calculated with the efficiency curve of handpiece Water Chilling Units.During this only at
Influence of the outdoor temperature to water system has been managed, and has not considered influence of the outdoor temperature to wind system, and resh air requirement is to wind system
Influence.The present invention changes according to resh air requirement, the demand of indoor user, outdoor temperature change and the pass between system total energy consumption
System, using total energy consumption minimum principle, wind pushing temperature optimal under different resh air requirements is determined, the present invention can be used for building automation
In air conditioning system with variable control device for tail end.
3rd, the regulated quantity of the climate compensator in traditional heating system is supply water temperature, and medium is water.In air-conditioning system
Climate compensator focus on to be the running parameter for adjusting handpiece Water Chilling Units, and change chilled water supply water temperature, so as to save cold water
The energy consumption of unit, medium are equally water；And in the system of the present invention, weather compensation regulated quantity is wind pushing temperature, cold by adjusting
Freeze water valve and make up to optimal value, medium is wind.
Brief description of the drawings
Fig. 1 is the structural representation of the VAV box temperature control system based on weather compensation of the present invention.
Fig. 2 is the host computer weather compensation signal transmission figure of the present invention.
Fig. 3 is the flow chart of the step 1 of the control method of the present invention.
Fig. 4 is the flow chart of the step 2 of the control method of the present invention.
Fig. 5 is the end-of-pipe control structure chart of the present invention.
Fig. 6 is the wind pushing temperature control structure figure of the present invention.
Fig. 7 is wind pushing temperature -- the energy consumption graph of a relation of the present invention.
Fig. 8 is the weather compensation partial trace figure of the present invention.
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
The energy-saving control system for VAV box of the present invention, including host computer 1, terminal controller 2, air-supply
Temperature controller 3, new trend controller 4, new air-valve 5, outdoor temperature sensor 6, indoor temperature transmitter 7, wind pushing temperature sensing
Device 8, air velocity transducer 9, freezing water valve 10, data acquisition A I modules 11, data acquisition A O module 12, end air-valve 13, heat exchange
Device 14, pressure fan 15 and VAV BOX 16.Wherein, host computer 1 and terminal controller 2, wind pushing temperature controller 3 and new air control
Device 4 processed is connected；Heat exchanger 14 and pressure fan 15 are located in air-treatment unit；The input of terminal controller 2 respectively with interior
Temperature sensor 7, the data acquisition A I modules 11 of air velocity transducer 9 are connected, output end and the end air-valve 13 of terminal controller 2
Data acquisition A O module 12 be connected；The input of wind pushing temperature controller 3 and the data acquisition A I moulds of wind pushing temperature sensor 8
Block 11 is connected, and the output end of wind pushing temperature controller 3 is connected with freezing the data acquisition A O module 12 of water valve 10；New trend controller
4 input is connected with the data acquisition A I modules 11 of new air-valve 5 and outdoor temperature sensor 6, the output of new trend controller 4
End is connected with the data acquisition A O module 12 of new air-valve 5；Outdoor temperature sensor 6, indoor temperature transmitter 7, wind pushing temperature pass
Sensor 8, the input of electric current type output terminal data acquisition A I modules 11 corresponding with itself respectively of air velocity transducer 9 are connected；
New air-valve 5, freezing water valve 10, the voltage type output terminal of end air-valve 13 data acquisition A I modules 11 corresponding with itself respectively it is defeated
Enter end to be connected；The voltage-type input of end air-valve 13, freezing water valve 10 current mode input, the voltage-type input point of new air-valve 5
The output end of data acquisition A O module 12 not corresponding with itself is connected.
New air-valve 5, outdoor temperature sensor 6 are arranged at fresh air inlet airduct；End air-valve 13 is arranged on VAV BOX
In 16；Indoor temperature transmitter 7 is arranged in the room of end；Wind pushing temperature sensor 8 is arranged in ajutage；Air velocity transducer
9 in VAV BOX 16 airduct, for detecting the air quantity into room；Freezing water valve 10 is arranged on heat exchanger return pipe
Lu Shang；Heat exchanger is for water return pipeline connection heat exchanger 14 and water system 17.Outdoor temperature sensor 6, indoor temperature transmitter
7th, the signal of wind pushing temperature sensor 8, air velocity transducer 9, new air-valve 5, freezing water valve 10 and end air-valve 13, passes through number respectively
Data are uploaded to computer according to collection AI modules 11 and data acquisition AO modules 12；Parameter that all the sensors detect, hold
The data such as row device position, control signal can realize data sharing by OPC technology；Data message can be carried out real-time by host computer
Monitoring, and it is simultaneously shared with terminal controller 2, wind pushing temperature controller 3, new trend controller 4.
Weather compensation diagram database is loaded with host computer, the databases are stored up under different resh air requirement operating modes, difference
Optimal wind pushing temperature setting value curve in outdoor temperature, different chamber under desired temperature, host computer are sentenced according to current resh air requirement
Surely any bar curve is selected, current optimal wind pushing temperature setting value is determined further according to indoor temperature setting value and outdoor temperature.
New trend controller 4 is used to adjust the given resh air requirement of fresh air valve opening according to the actual requirements；Wind pushing temperature controller 3 is used
In the optimal wind pushing temperature setting value according to determined by weather compensation diagram database, control signal is provided to adjust freezing water valve
10 aperture, so that wind pushing temperature reaches setting value；Terminal controller 2 includes outer shroud temperature controller and inner ring Boiler pressure control
Device, temperature controller according to indoor temperature setting value and the difference of room actual temperature that is detected by indoor temperature transmitter to
Determine air quantity setting value；Blast volume controller according to the output of temperature controller with the room that is detected by air velocity transducer 11 is actual gives
The difference of air quantity, the aperture of end air-valve 13 is controlled, adjust the discharge quantity of fan of end air-valve, realize the tune of end room temperature
Section.
Fig. 1 is the VAV Box System structural representation based on weather compensation, and Fig. 2 is host computer weather of the present invention
Thermal compensation signal transmission figure.
The VAV box temprature control method based on weather compensation of the present invention comprises the following steps：
Step 1：Under the setting value of every kind of resh air requirement, every group of outdoor temperature, indoor temperature setting value and air-supply temperature are determined
System total power consumption minimum value under the combination of setting value is spent, and the wind pushing temperature obtained corresponding to system total power consumption minimum value is set
Definite value, as optimal wind pushing temperature setting value；Using outdoor temperature and indoor temperature setting value as independent variable, by optimal air-supply temperature
Setting value is spent as dependent variable, obtains corresponding matched curve under current resh air requirement operating mode；By matched curve and its corresponding
Resh air requirement setting value is stored in matched curve database.Comprise the following steps that：
Step 11：Current resh air requirement is judged whether in setting range, is then to perform step 12, is otherwise terminated.
Optionally, it is above-mentioned to judge whether current resh air requirement refers in setting range in the present invention：Whether judge resh air requirement
Not less than 10% (i.e. fresh air valve opening is not less than 10%) of total air output.The aperture of new air-valve is by its corresponding data acquisition A I
Module measures.Resh air requirement is according to GB-5073b-2012《Heating and ventilation and In Air Conditioning Design specification》Set, will under varying environment
Ask different, not less than the 10% of total air output.
Step 12：Current outdoor temperature is judged whether in set interval, is then to perform step 13；Otherwise, step is performed
17；
According to《Climate region of building》Regulation, by taking northwest China as an example, under winter condition, outdoor temperature scope
For -10~15 DEG C, Annual lowest climate temperature is between -20~-30 DEG C；Under summer condition, the scope of above-mentioned outdoor temperature for 18~
28 DEG C, 35~44 DEG C of Extreme Maximum Temperature.
Step 13：Current indoor temperature setting value is judged whether in set interval, is then to perform step 14；Otherwise perform
Step 16；
Optionally, the scope of above-mentioned indoor temperature setting value is 18~21 DEG C.It is (comfortable for winter condition civil buildings herein
It is the indoor temperature range corresponding to II levels to spend grade, according to GB-5073b-2012《Heating and ventilation is advised with In Air Conditioning Design
Model》Set.)
Step 14：Under every kind of wind pushing temperature setting value, when system run all right, acquisition system total power consumption, obtain
Wind pushing temperature setting value corresponding to system total power consumption minimum value, as optimal wind pushing temperature setting value；Perform step 15；
Optionally, above-mentioned wind pushing temperature setting range is according to GB-5073b-2012《Heating and ventilation is advised with In Air Conditioning Design
Model》The maximum supply air temperature difference in middle comfort air conditioning system room is not preferably greater than 10 DEG C of settings, and setting range is 26~33 DEG C.
Step 15：Indoor temperature setting value after one step-length of indoor temperature setting value raising is updated；Perform step
Rapid 13；
Step 16：Current outdoor temperature after one step-length of outdoor temperature raising is updated；Perform step 12.
Step 17：Using outdoor temperature and indoor temperature setting value as independent variable, using optimal wind pushing temperature setting value as
Dependent variable, obtain corresponding matched curve under current resh air requirement operating mode；By matched curve and its deposit fitting of corresponding resh air requirement
Diagram database；Perform step 18；
Step 18：Current resh air requirement after one step-length of current resh air requirement raising is updated；Perform step 11.
Therefore, corresponding under every kind of resh air requirement operating mode to obtain a matched curve, the matched curve represents outdoor temperature
With the linear relationship of indoor temperature setting value and wind pushing temperature setting value, so as to next can realize in every kind of resh air requirement work
Under condition, a wind pushing temperature setting value is worth to according to outdoor temperature and indoor temperature setting, uses the wind pushing temperature setting value
Control system is run, then obviously can ensure that the energy consumption of system operation is minimum all the time.
The flow chart of step 1 is as shown in Figure 3.
Step 2：Current resh air requirement is gathered, matched curve corresponding with the resh air requirement is found out from matched curve database；
Current outdoor temperature and indoor temperature setting value are gathered, and wind pushing temperature setting value is obtained by matched curve；The air-supply that will be obtained
Desired temperature introduces control system and is controlled.Comprise the following steps that：
Step 21：Current resh air requirement is gathered, matched curve corresponding with the resh air requirement is found out from matched curve database；
Step 22：Current outdoor temperature and indoor temperature setting value are gathered, will be substituted into both as independent variable in step 21
In the curve found, wind pushing temperature setting value is obtained.
Step 23：Obtained wind pushing temperature setting value introducing control system is controlled.Now, the total energy consumption of system shows
So it is in minimum value.
Step 24：Judge whether default control detection time reaches, repeated if reaching more than execution step 21-23.
The flow chart of step 2 is as shown in Figure 4.
Embodiment
It is one embodiment of the method for the present invention below, the purpose for providing the embodiment is in order to illustrate more clearly of this
The embodiment of invention, invention which is intended to be protected are not limited to the embodiment.
Resh air requirement is set in step 11 as minimum fresh air requirmente (setting fresh air valve opening as 10%), collection ought in step 12
Preceding outdoor temperature, it is 19 DEG C that indoor temperature setting value is given in step 13, and indoor temperature passes through end-of-pipe control circuit controls, such as schemes
5；In step 14, wind pushing temperature setting value changes in the range of 26-29 DEG C, and wind pushing temperature passes through wind pushing temperature control loop control
System, such as Fig. 6.In Fig. 6, temperature controller and blast volume controller are integrated in one piece of composition terminal controller.System closed-loop stabilization is transported
(outdoor temperature be 0 DEG C) wind pushing temperature setting value and system total energy consumption relation curve after row, are obtained under specific outdoor temp angle value
Such as Fig. 7.In Fig. 7, with the increase of wind pushing temperature setting value, the wind pushing temperature setting value corresponding to total energy consumption minimization value point of system
Optimal wind pushing temperature setting value as under the operating mode.In this experimental system, optimal wind pushing temperature sets valve system total energy consumption ratio
Peak energy-conservation 35.5%.Outdoor temperature scope is -1~3 DEG C, when indoor setting value is 19 DEG C, is obtained according to step 17 such as Fig. 8
Shown matched curve：Y=1.3923x1+0.5594x2, wherein, x1For indoor temperature setting value, x2For outdoor temperature, y is most
Excellent wind pushing temperature setting value.
Above-mentioned indoor temperature setting value is set by end room control panel, and experimental system end of the present invention is
Pressure independent type, indoor temperature is by end-of-pipe control loop double-closed-loop control, and control loop such as Fig. 5, main ring is temperature control loop,
Inner loop is Boiler pressure control loop.The input of temperature controller is indoor temperature setting value and detected by indoor temperature transmitter
The difference of indoor actual temperature, export as air quantity setting value；The input of blast volume controller is for the output of temperature controller and by wind
The difference for the actual air output in room that quantity sensor detects, export as the aperture of end air-valve, by adjusting end air-valve
Discharge quantity of fan (air quantity for being sent into room), realizes the regulation of end room temperature.
Above-mentioned wind pushing temperature is controlled by wind pushing temperature control loop, as shown in fig. 6, its control principle is set with wind pushing temperature
Input of the difference for the actual wind pushing temperature that definite value measures with wind pushing temperature sensor as wind pushing temperature controller, passes through tune
The aperture that water valve is freezed in section system changes control of the water-carrying capacity realization of heat exchanger to wind pushing temperature.
Comprehensive different time sections are required the difference of indoor temperature, presetting different new in weather compensation diagram database
Under air quantity, outdoor temperature, indoor temperature setting value, optimal wind pushing temperature setting value curve, set control system wind pushing temperature
Value changes under the conditions of different terminal temperature differences with outdoor temperature.So as to meet different outdoor temperatures, different time sections room temperature will
Ask, accomplish timesharing heating, heat on demand, reach the purpose of comfortable energy-conservation.
During central air-conditioning refrigerating/heating, because of the change of various conditions, the change of weather is not very regular, host computer
Homologous thread is determined according to current resh air requirement, outdoor temperature sensor gathers outdoor temperature in real time, by this temperature signal transmit to
Host computer, host computer are found now according to outdoor temperature and the indoor temperature setting value of user in weather compensation database
Wind pushing temperature setting value；Wind pushing temperature controller is cold to adjust according to its wind pushing temperature setting value and the deviation of actual wind pushing temperature
Freeze water valve aperture, change the water-carrying capacity of heat exchanger, realize the control to wind pushing temperature, with the influence of temperature change outside compensated chamber,
Obtain optimum reelability quality and minimum energy resource consumption.
Information when the weather compensation method of the present invention uses system testing in Practical Project in database carries out statistical
Analysis, with system operation time is cumulative can gradual abundant data storehouse.
Claims (6)
- A kind of 1. energy-saving control system for VAV box, it is characterised in that including host computer, terminal controller, Wind pushing temperature controller, new trend controller, new air-valve, outdoor temperature sensor, indoor temperature transmitter, wind pushing temperature sensing Device, air velocity transducer, freezing water valve, data acquisition A I modules, data acquisition A O module, end air-valve, heat exchanger, pressure fan and VAV BOX；Wherein, host computer is connected with terminal controller, wind pushing temperature controller and new trend controller；The input of terminal controller The data acquisition A I modules respectively with indoor temperature transmitter, air velocity transducer are held to be connected, output end and the end of terminal controller The data acquisition A O module of end air-valve is connected；The input of wind pushing temperature controller and the data acquisition A I of wind pushing temperature sensor Module is connected, and the output end of wind pushing temperature controller is connected with freezing the data acquisition A O module of water valve；New trend controller it is defeated Enter end with the data acquisition A I modules of new air-valve and outdoor temperature sensor to be connected, the output end and new air-valve of new trend controller Data acquisition A O module be connected；Outdoor temperature sensor, indoor temperature transmitter, wind pushing temperature sensor, air velocity transducer The inputs of electric current type output terminal data acquisition A I modules corresponding with itself respectively be connected；New air-valve, freezing water valve, end The input of air-valve voltage type output terminal data acquisition A I modules corresponding with itself respectively is connected；End air-valve voltage-type input End, freezing water valve current mode input, new air-valve voltage-type input data acquisition A O module corresponding with itself respectively it is defeated Go out end to be connected；Data acquisition A I modules connect host computer with data acquisition AO modules；The new air-valve, outdoor temperature sensor are arranged at fresh air inlet airduct；End air-valve is arranged in VAV BOX；Room Interior temperature sensor is arranged in the room of end；Wind pushing temperature sensor is arranged in ajutage；Air velocity transducer is arranged on VAV In BOX airduct；Water valve is freezed to be arranged on heat exchanger water return pipeline；The energy-saving control system for VAV box carries out temperature control before it needs to be determined that optimal wind pushing temperature Setting value, the determination process of the optimal wind pushing temperature setting value are as follows：Step 1：Under the setting value of every kind of resh air requirement, determine that every group of outdoor temperature, indoor temperature setting value and wind pushing temperature are set System total power consumption minimum value under the combination of definite value, and obtain the setting of the wind pushing temperature corresponding to system total power consumption minimum value Value, as optimal wind pushing temperature setting value；Using outdoor temperature and indoor temperature setting value as independent variable, by optimal wind pushing temperature Setting value obtains corresponding matched curve under current resh air requirement operating mode as dependent variable；By matched curve and its corresponding new Air quantity setting value is stored in matched curve database；Step 2：Current resh air requirement is gathered, matched curve corresponding with the resh air requirement is found out from matched curve database；Collection Current outdoor temperature and indoor temperature setting value, and wind pushing temperature setting value is obtained by matched curve；The wind pushing temperature that will be obtained Setting value introduces control system and is controlled.
- 2. a kind of VAV box temprature control method based on weather compensation, it is characterised in that comprise the following steps：Step 1：Under the setting value of every kind of resh air requirement, determine that every group of outdoor temperature, indoor temperature setting value and wind pushing temperature are set System total power consumption minimum value under the combination of definite value, and obtain the setting of the wind pushing temperature corresponding to system total power consumption minimum value Value, as optimal wind pushing temperature setting value；Using outdoor temperature and indoor temperature setting value as independent variable, by optimal wind pushing temperature Setting value obtains corresponding matched curve under current resh air requirement operating mode as dependent variable；By matched curve and its corresponding new Air quantity setting value is stored in matched curve database；Step 2：Current resh air requirement is gathered, matched curve corresponding with the resh air requirement is found out from matched curve database；Collection Current outdoor temperature and indoor temperature setting value, and wind pushing temperature setting value is obtained by matched curve；The wind pushing temperature that will be obtained Setting value introduces control system and is controlled, and comprises the following steps that：Step 11：Current resh air requirement is judged whether in setting range, is then to perform step 12；Otherwise terminate；Step 12：Current outdoor temperature is judged whether in set interval, is then to perform step 13；Otherwise, step 17 is performed；Step 13：Current indoor temperature setting value is judged whether in set interval, is then to perform step 14；Otherwise step is performed 16；Step 14：Under every kind of wind pushing temperature setting value, when system run all right, acquisition system total power consumption, system is obtained Wind pushing temperature setting value corresponding to total power consumption minimum value, as optimal wind pushing temperature setting value；Perform step 15；Step 15：Indoor temperature setting value after one step-length of indoor temperature setting value raising is updated；Perform step 13；Step 16：Current outdoor temperature after one step-length of outdoor temperature raising is updated；Perform step 12；Step 17：Using outdoor temperature and indoor temperature setting value as independent variable, using optimal wind pushing temperature setting value as because becoming Amount, obtains corresponding matched curve under current resh air requirement operating mode；By matched curve and its deposit matched curve of corresponding resh air requirement Database；Perform step 18；Step 18：Current resh air requirement after one step-length of current resh air requirement raising is updated；Perform step 11.
- 3. the VAV box temprature control method based on weather compensation as claimed in claim 2, it is characterised in that institute State in step 11, the resh air requirement is not less than the 10% of total air output.
- 4. the VAV box temprature control method based on weather compensation as claimed in claim 2, it is characterised in that institute State in step 13, the scope of the indoor temperature setting value is 18-21 DEG C.
- 5. the VAV box temprature control method based on weather compensation as claimed in claim 2, it is characterised in that institute State in step 14, the wind pushing temperature setting range is 26-33 DEG C.
- 6. the VAV box temprature control method based on weather compensation as claimed in claim 2, it is characterised in that institute State comprising the following steps that for step 2：Step 21：Current resh air requirement is gathered, matched curve corresponding with the resh air requirement is found out from matched curve database；Step 22：Current outdoor temperature and indoor temperature setting value are gathered, will substitute into step 21 and find both as independent variable Curve in, obtain optimal wind pushing temperature setting value；Step 23：Obtained wind pushing temperature setting value introducing control system is controlled；Now, the total energy consumption of system is obviously located In minimum value；Step 24：Judge whether default control detection time reaches, repeated if reaching more than execution step 21-23.
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