CN108518828A - Central air-conditioning intelligently manages system - Google Patents
Central air-conditioning intelligently manages system Download PDFInfo
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- CN108518828A CN108518828A CN201810299546.XA CN201810299546A CN108518828A CN 108518828 A CN108518828 A CN 108518828A CN 201810299546 A CN201810299546 A CN 201810299546A CN 108518828 A CN108518828 A CN 108518828A
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- central air
- air conditioner
- energy efficiency
- management device
- conditioning
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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
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- Engineering & Computer Science (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 central air-conditioning intelligently to manage system.The system is made of central air conditioner room equipment, detection controller, energy efficiency management device and background server, and the central air conditioner room equipment includes refrigerating water pump, cooling pump, blower fan of cooling tower, handpiece Water Chilling Units, Fresh air handling units, fan coil, plate heat exchanger and packaged air conditioner；The output end of the detection controller is correspondingly connected with central air conditioner room equipment respectively, and the input terminal of the detection controller connects energy efficiency management device, and the energy efficiency management device is connected by Ethernet and background server communication.In the present invention, the feedback to central air conditioner room control system, adjusting and optimization are realized, energy utilization efficiency is improved, the energy waste for controlling end, reduces invalid air conditioner load, to the significant increase energy-saving effect of system entirety.
Description
Technical field
The present invention relates to central air conditioning system fields more particularly to a kind of central air-conditioning intelligently to manage system.
Background technology
The control technology of central air conditioner room control system can substantially be divided into following three classes：One, fuzzy control：Fuzzy Control
Technology processed is one of important branch of intelligent control, the technology with simple in structure, strong robustness, do not need the mathematics of controlled device
Many advantages, such as model and quick thick item, is widely used；Two, individual equipment controls：Such control mostly concentrates on air-conditioning system
On the Energy Saving Control of the individual equipment of system, the energy-saving effect of stand-alone device is obvious；Three, the team control of unit：Simply,
It is that handpiece Water Chilling Units, refrigerating water pump, cooling pump and cooling tower fan etc. are realized a kind of central controlled control strategy.Certainly it is possible to
There are the equipment such as more handpiece Water Chilling Units, water pumps, be uniformly controlled by a PC machine or industrial personal computer realization, carrying out interlocking to each equipment opens
Stop, is opened and closed each equipment on demand.
Although this existing three classes control program has all reached certain energy saving purpose to varying degrees, respectively deposit
It is difficult to overcome the problems, such as in many.Shown in details are as follows：
Fuzzy control：The problems such as that there is such as control accuracies is not high for itself, " rules explosion ", although variable universe Fuzzy Control
The it is proposed of algorithm processed solves the problems, such as these to a certain extent, but can not be eradicated.
Individual equipment controls：Although the energy-saving effect of stand-alone device is obvious, from the point of view of whole system angle, because
To lack the energy saving solution of system, so there is no obtain the energy-saving effect to match with stand-alone device.In practical application
In, due to the high coupling of central air-conditioning, often this equipment energy consumption declines, but the energy consumption of miscellaneous equipment but increases,
And then seriously affect the whole energy effect of central air conditioner system.
The team control of unit：Such control technology has had certain research, but in the application of actual system, really puts into
The group control system used is very few.Chief reason is exactly that system running policy is not perfect the most for one of them, to each equipment
Only make simple interlocking start-up and shut-down control, causing air-conditioning equipment to occur, frequent start-stop, end air quality difference etc. are a series of to ask
Topic.
Although in order to overcome the various disadvantages occurred in the above three classes control technology, has researcher and propose in central hollow
In the control program of tune, while various control technology is merged, to achieve the purpose that mutual supplement with each other's advantages.For example, Zeng You researcher
It is proposed a kind of group control energy-saving method based on fuzzy control.But since the above three classes control technology is all based on experience, or
Some fuzzy control sections are set according to fuzzy control, these control systems have multivariable, close coupling, time-varying and non-thread mostly
The features such as property, so all not setting up accurate mathematical model.Therefore existing various control programs can not all solve well
The certainly not high problem of control accuracy.
Invention content
The present invention provides a kind of central air-conditioning intelligently to manage system, realizes to the anti-of central air conditioner room control system
Feedback adjusts and optimizes, and improves energy utilization efficiency, the energy waste for controlling end, reduces invalid air conditioner load, to very big
Improve the energy-saving effect of system entirety.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of central air-conditioning intelligence management system, it is characterised in that：The system is controlled by central air conditioner room equipment, detection
Device, energy efficiency management device and background server composition, the central air conditioner room equipment includes refrigerating water pump, cooling pump, cooling tower wind
Machine, handpiece Water Chilling Units, Fresh air handling units, fan coil, plate heat exchanger and packaged air conditioner；The output end of the detection controller
It is correspondingly connected with respectively with central air conditioner room equipment, the input terminal of the detection controller connects energy efficiency management device, the efficiency
Manager is connected by Ethernet and background server communication.
Ammeter and on-Line Monitor Device are equipped in the detection controller, being equipped with efficiency in the background server calculates mould
Block, MySQL database and display.
It is described detection controller output end by control circuit connect central air conditioner room equipment on switch, valve and
Frequency converter.
The refrigerating water pump detection controller, cooling pump detection controller, blower fan of cooling tower detection controller, handpiece Water Chilling Units inspection
It surveys controller and connects the first energy efficiency management device with the input terminal of plate heat exchanger detection controller；Fresh air handling units detect controller
Input terminal connects the second energy efficiency management device；The input terminal that fan coil detects controller connects third energy efficiency management device；Combined type
The input terminal that air conditioner detects controller connects the 4th energy efficiency management device.
The output end of the first energy efficiency management device connects refrigeration machine.
The refrigerating water pump and cooling pump are variable ratio frequency changer water pump.
Compared with prior art, the present invention has at least the following advantages：
By the technical solution of aforementioned present invention, this system can be to the plate heat exchanger of central air-conditioning, cooling water system, cold
Freeze water system etc. and carry out parameter Centralizing inspection, equipment automation control and feedback control again, therefore can automatically control freezing
Water, cooling water flow, it is ensured that the safe operation of central air conditioner main machine.System can be gone according to the optimal operating parameter of air-conditioning system
The operation of control system is to dynamically adjust with algorithm by efficiency Optimized model according to the variation of the operating condition of system
System operating parameter, it is ensured that air-conditioning is on the best operating point of optimization always, improves the capacity usage ratio of system.In system
Under any loading condiction, it can not only ensure the comfort of air-conditioning system but also realize energy saving to the greatest extent.The present invention has good
Development prospect and huge economic benefit.
Description of the drawings
Fig. 1 is the overall structure block diagram that a kind of central air-conditioning provided in an embodiment of the present invention intelligently manages system；
Fig. 2 is the structure expanded schematic diagram that a kind of central air-conditioning provided in an embodiment of the present invention intelligently manages system.
Specific implementation mode
Below in conjunction with the attached drawing in the present invention, the technical solution in the present invention is clearly and completely described, is shown
So, described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
As Figure 1-Figure 2, it is that a kind of central air-conditioning that the embodiment of the present invention proposes intelligently manages system, the system is in
Air Conditioning Facilities equipment 1, detection controller 2, energy efficiency management device 3 and background server 4 is entreated to form, central air conditioner room equipment 1 is wrapped
Include refrigerating water pump 11, cooling pump 12, blower fan of cooling tower 13, handpiece Water Chilling Units 14, Fresh air handling units 15, fan coil 16, plate heat exchanger
17 and packaged air conditioner 18；The output end of detection controller 2 is correspondingly connected with central air conditioner room equipment 1 respectively, detection control
The input terminal connection energy efficiency management device 3 of device 2 processed, energy efficiency management device 3 is connected by Ethernet 5 and the communication of background server 4.
Preferably, it detects and is equipped with ammeter and on-Line Monitor Device in controller 2, being equipped with efficiency in background server 4 calculates
Module, MySQL database and display.
Preferably, the output end of detection controller 2 connected by control circuit switch in central air conditioner room equipment 1,
Valve and frequency converter.
Preferably, refrigerating water pump detection controller 21, cooling pump detect controller 22, blower fan of cooling tower detects controller 23,
Handpiece Water Chilling Units detect controller 24 and connect the first energy efficiency management device 31 with the input terminal of plate heat exchanger detection controller 27；Fresh air
The input terminal that unit detects controller 25 connects the second energy efficiency management device 32；Fan coil detects the input terminal connection of controller 26
Third energy efficiency management device 33；The input terminal that packaged air conditioner detects controller 28 connects the 4th energy efficiency management device 34.
Preferably, the output end of the first energy efficiency management device 31 connects refrigeration machine 6.
Preferably, refrigerating water pump 11 and cooling pump 12 are variable ratio frequency changer water pump.
The operation principle and operating process of the present invention are described as follows below in conjunction with the accompanying drawings：
The present invention is optimized by using system energy efficiency Optimized model exchange hot systems can significantly reduce central hollow
The system energy consumption of tune, to reach energy-efficient purpose.System energy efficiency Optimized model is established by energy efficiency manager, to sky
Adjusting system is controlled accordingly, makes up to higher efficiency, and according to feedback as a result, being controlled according to energy efficiency model corresponding
Switchgear start and stop, the opening size of valve and the frequency of frequency converter, and then constantly feed back, adjust again again, is excellent again
Change.Concrete operations are as follows：
(1) metering separate.Measure cooling water pump in Central Air-condition Refrigerator room, handpiece Water Chilling Units, freezing respectively with ammeter
The power consumption of the electrical equipments such as water pump, i.e. their respective energy consumptions, are denoted as W respectivelyCooling pump energy consumption、WHandpiece Water Chilling Units、wRefrigerating water pump energy consumption, then automatically
These energy consumption datas are sent to air-conditioning equipment (system) energy efficiency manager, and are shown in together in back-stage management software,
So as to staff's observation analysis.
(2) it monitors on-line.Air-conditioning equipment (system) energy efficiency manager, which can be realized, (surveys the intake pressure of cooling water
Amount point is close to handpiece Water Chilling Units end), the flow of inlet water of cooling water, cooling water inflow temperature (test point is close to handpiece Water Chilling Units end),
Intake pressure (the detection of the leaving water temperature (test point is close to handpiece Water Chilling Units end), the flow of inlet water of chilled water, chilled water of cooling water
Point is close to handpiece Water Chilling Units end), the leaving water temperature (inspection of the inflow temperature (monitoring point is close to handpiece Water Chilling Units end) of chilled water, chilled water
Measuring point is close to handpiece Water Chilling Units end), indoor real time temperature (the average position of indoor temperature), indoor real-time humidity, infrared perception time
Number (test position is located at the place that people compares concentration) is monitored on-line in real time, and monitoring data can be with real-time display on backstage
In management software, to facilitate staff's observation analysis.And collected data are stored in MySQL database.
(3) energy efficiency evaluation.Air-conditioning equipment (system) energy efficiency manager, which can be realized, imitates air-conditioning system using energy source
The assessment of rate.First according to the cooling pump real-time monitored in the subitem energy consumption of the cooling pump of metering separate in (1) and (2) into
The leaving water temperature of water flow, the inflow temperature of cooling pump, cooling pump, utilizes formulaCalculate cooling
The real-time system efficiency of pump；Secondly cold according to being real-time monitored in the subitem energy consumption of the refrigerating water pump of metering separate in (1) and (2)
The leaving water temperature for freezing the flow of inlet water of pump, the inflow temperature of refrigerating water pump, refrigerating water pump, utilizes formulaIt calculates
Go out the real-time system efficiency of refrigerating water pump；Then by selecting the period, the data preserved in database is called, are calculated at this
The system energy utilization ratio of cooling pump and refrigerating water pump in period；Finally utilize formula：It calculates
The system energy efficiency of large electricity consumer's handpiece Water Chilling Units, chilled water pump, cooling water pump entirety in the time of oneself selection in air-conditioning system.
Wherein letter is expressed as, EER：Energy Efficiency Ratio, i.e. efficiency of energy utilization；W：The electric energy of electrical equipment consumption；C：Medium
Specific heat capacity, medium is usually water, C=4.2*103 is burnt/kilogram degree Celsius；m：The quality of medium, is obtained by flow rate calculation
, it is positively correlated with flow；△T：The temperature difference, chilled water pump are into and out water temperature difference, and cooling water pump is backwater temperature difference.
Air-conditioning energy efficiency evaluation (system) can realize the subitem meter to each set electrical equipment energy consumption in central air conditioner system
Amount there is a need to online data monitoring, and the assessment of efficiency of energy utilization to central air conditioner system.
By selecting period, inquiry to collect the data in MySQL database, pass through formula：It can also count
Calculate with back-stage management software on connect air-conditioning, heating, the total system energy utilization ratio of hot-water heating system during this period of time,
Achieve the purpose that carry out comprehensive assessment to the efficiency of energy utilization of electrical equipment entirety.
Next, the several critical problems that will in detail tell about in control system, as follows：
(1) the parameter reading of handpiece Water Chilling Units and carry calculation
The related data of handpiece Water Chilling Units, which obtains, to be determined according to the situation at scene, the energy consumption data and load water of handpiece Water Chilling Units
The flat critical data for being to determine and optimizing its efficiency.
If the related operation data of handpiece Water Chilling Units can be directly obtained, it need to will only obtain data and be sent respectively to bottom
Controller and server are controlled accordingly by comparing and analyzing.
If the related operation data of handpiece Water Chilling Units cannot be directly acquired, we will take indirect form-mono- to pass through measurement
The data of unit electric energy meter, water pump operation frequency and goes out the temperature difference of return water and come the anti-energy consumption for releasing unit and efficiency level.
And handpiece Water Chilling Units, cooling, freezing are controlled according to the working condition application system efficiency Optimized model of load condition, cold, water pump
Pump working is in system optimal state.
(2) regulation scheme of water pump
The water pump used in air-conditioning system is mostly variable-frequency water pump, this just carries out efficiency optimization for us and provides abundance
Material base.The specific control strategy of testing pump will be debugged according to field condition, in its control of this plain statement
Thinking：
Under normal load and weather condition, the supply and return water temperature of earth source heat pump is substantially invariable, due to the change of load
Change can cause unit supply and return water temperature and the temperature difference to change, the control for pump, we will according to indoor and outdoor humiture and
Control is adjusted in supply backwater temperature difference and the optimal principle of system energy efficiency.
(3) due to chilled water system since the distance of transfer conduit has certain length, refrigeration machine is being stopped before leaving offices,
It is another important measures for reducing energy consumption to make full use of the cold in pipeline then.It is nice and cool in weather, it can shut down, as possible
Utilize external natural wind.
In short, realizing that the core of building energy conservation can be attributed in short：Using detection device and system by building
It is come out with energy condition detection, wasting phenomenon present in building is found by energy management, and will waste using control system
It lowers, under the premise of not wasted the energy requirement of energy, Energy Management System is again by making central air-conditioning set
It is standby to operate under system high efficiency rate state, it realizes energy saving.
Compared with prior art, the present invention has at least the following advantages：
By the technical solution of aforementioned present invention, this system can be to the plate heat exchanger of central air-conditioning, cooling water system, cold
Freeze water system etc. and carry out parameter Centralizing inspection, equipment automation control and feedback control again, therefore can automatically control freezing
Water, cooling water flow, it is ensured that the safe operation of central air conditioner main machine.System can be gone according to the optimal operating parameter of air-conditioning system
The operation of control system is to dynamically adjust with algorithm by efficiency Optimized model according to the variation of the operating condition of system
System operating parameter, it is ensured that air-conditioning is on the best operating point of optimization always, improves the capacity usage ratio of system.In system
Under any loading condiction, it can not only ensure the comfort of air-conditioning system but also realize energy saving to the greatest extent.The present invention has good
Development prospect and huge economic benefit.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (4)
1. a kind of central air-conditioning intelligently manages system, it is characterised in that：The system is controlled by central air conditioner room equipment, detection
Device, energy efficiency management device and background server composition, the central air conditioner room equipment includes refrigerating water pump, cooling pump, cooling tower wind
Machine, handpiece Water Chilling Units, Fresh air handling units, fan coil, plate heat exchanger and packaged air conditioner；The output end of the detection controller
It is correspondingly connected with respectively with central air conditioner room equipment, the input terminal of the detection controller connects energy efficiency management device, the efficiency
Manager is connected by Ethernet and background server communication, and ammeter and on-Line Monitor Device are equipped in the detection controller,
Efficiency computing module, MySQL database and display are equipped in the background server.
2. central air-conditioning as described in claim 1 intelligently manages system, it is characterised in that：The output end of the detection controller
Switch, valve and the frequency converter in central air conditioner room equipment are connected by control circuit, it is refrigerating water pump detection controller, cold
But pump detection controller, blower fan of cooling tower detection controller, handpiece Water Chilling Units detection controller and plate heat exchanger detect controller
Input terminal connect the first energy efficiency management device；The input terminal that Fresh air handling units detect controller connects the second energy efficiency management device；Wind turbine
The input terminal that coil pipe detects controller connects third energy efficiency management device；Packaged air conditioner detects the input terminal connection the of controller
Four energy efficiency management devices.
3. central air-conditioning as claimed in claim 2 intelligently manages system, it is characterised in that：The first energy efficiency management device it is defeated
Outlet connects refrigeration machine.
4. central air-conditioning as described in claim 1 intelligently manages system, it is characterised in that：The refrigerating water pump and cooling pump are can
Variable frequency pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299546.XA CN108518828A (en) | 2018-04-04 | 2018-04-04 | Central air-conditioning intelligently manages system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810299546.XA CN108518828A (en) | 2018-04-04 | 2018-04-04 | Central air-conditioning intelligently manages system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108518828A true CN108518828A (en) | 2018-09-11 |
Family
ID=63431949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810299546.XA Withdrawn CN108518828A (en) | 2018-04-04 | 2018-04-04 | Central air-conditioning intelligently manages system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108518828A (en) |
-
2018
- 2018-04-04 CN CN201810299546.XA patent/CN108518828A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180911 |
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| WW01 | Invention patent application withdrawn after publication |