CN106225112A - A kind of intelligent type energy saving central air conditioner system and control method thereof - Google Patents
A kind of intelligent type energy saving central air conditioner system and control method thereof Download PDFInfo
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- CN106225112A CN106225112A CN201610885144.9A CN201610885144A CN106225112A CN 106225112 A CN106225112 A CN 106225112A CN 201610885144 A CN201610885144 A CN 201610885144A CN 106225112 A CN106225112 A CN 106225112A
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- 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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/30—Velocity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/40—Pressure, e.g. wind pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
-
- 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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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Fuzzy Systems (AREA)
- Fluid Mechanics (AREA)
- Human Computer Interaction (AREA)
- Air Conditioning Control Device (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
nullThe invention discloses a kind of intelligent type energy saving central air conditioner system，Comprising: cold and heat source system、VMC (Ventilation Mechanical Control System)、For refrigeration or the source pump of heat supply、It is arranged in outdoor for cooling circulating cooling water and the cooling tower with the function that recovers energy、Air is filtered、Heating、Cooling、Humidification、The wind cabinet of purified treatment、To cooling down the water pump that water pressurizes and cooling water is transported to cooling tower、Control the intelligence control system of drive mechanism，This system includes DDC controller、And the temperature sensor being electrically connected with DDC controller respectively、Air velocity transducer、Speed probe、Flow sensor，DDC controller is by the data of each sensor acquisition and plug-in，To source pump、Cooling tower、The operational factor of wind cabinet is controlled: the preferential power using hydraulic turbine output，The power of gas-turbine output it is supplemented with time not enough，To ensure that the water temperature in cooling tower is maintained in the range of setting.Also disclose the control method of intelligent type energy saving central air conditioner system.
Description
Technical field
The present invention relates to energy-saving field, particularly relate to a kind of intelligent type energy saving central air conditioner system and control method thereof.
Background technology
Central air conditioner system is made up of cold and heat source system and VMC (Ventilation Mechanical Control System).The effect of cold and heat source system is as requested for room
Interior offer cold or heat, it is ensured that indoor temperature requirement；The effect of VMC (Ventilation Mechanical Control System) is to utilize outdoor fresh air to carry out
Filter, humidify, purification etc. processes the air pollution that rear substitution is indoor, it is ensured that the quality of room air and humidity requirement.System of central authorities
The main energy-consuming parts of system is the blower fan in the blower fan and water pump, VMC (Ventilation Mechanical Control System) driving blower fan to operate in main frame, cooling tower.
In actual applications, in order to ensure to cool down in central air-conditioning the circular flow of water, water pump lift the most all can have
Certain surplus capacity, in the cooling tower that electric machine for fan drives, the energy of this part surplus capacity typically can be along with cooling water
Spray and waste.
VMC (Ventilation Mechanical Control System) is mainly by wind cabinet, set ajutage, set backwind tube, an ajutage, a backwind tube, fresh wind tube and row
The parts compositions such as airduct.Outdoor fresh air mixes, after treatment with the part return air returned from set backwind tube
Being then sent through indoor, another part return air is then directly discharged to outdoor environment by exhaust duct.
Generally, the air that exhaust duct ejects has the speed of 6 8m/s, in large-scale building, due to wind
Amount is big, and the energy of this part is appreciable, and current common practices is to be exhausted directly in air, can not get any profit
With.
Therefore, prior art has yet to be improved and developed, and to improve the comprehensive utilization ratio of the energy, reduces central air-conditioning
Overall energy consumption.
Summary of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, it is provided that one can carry out energy
The energy-saving central air conditioning system reclaimed, water energy more than needed, cold energy are carried out high efficiente callback and again with, reduce central air-conditioning
Overall energy consumption.
Cooling tower mates the applicable hydraulic turbine and gas-turbine, the part respectively water pump and fresh air ventilator consumed
Energy regenerating is also converted into the power that blower fan of cooling tower operates, thus reduces blower fan and need the power of motor of coupling, it might even be possible to
Just blower fan can be made to run well without mating motor, some situation can also be converted into electric energy the surplus reclaimed by electromotor
And store.So it is this central air conditioner system economy, energy-conservation.
It is as follows that the present invention solves the technical scheme that technical problem used:
A kind of intelligent type energy saving central air conditioner system, comprising: cold and heat source system and VMC (Ventilation Mechanical Control System), it is characterised in that its
Also include:
For refrigeration or the source pump of heat supply, the effect of described source pump is cooling or the cooling of heat cycles
Water so that it is reach required temperature；
Being arranged in outdoor for cooling circulating cooling water and the cooling tower with the function that recovers energy, described cooling tower is by cold
But tower body and drive mechanism composition；
Air filtered, heat, cool down, humidify, the wind cabinet of purified treatment, include compression inside described wind cabinet
The parts such as machine, condenser, expansion valve and vaporizer；
To cooling down the water pump that water pressurizes and cooling water is transported to cooling tower；
Described drive mechanism, including power transmission shaft, blower fan, the hydraulic turbine, gas-turbine；Described gas-turbine is by variable-speed bearing or super
On the sectional drive shaft that more clutch and described blower fan, the hydraulic turbine are connected to be in same axis, vertical direction is arranged；
The described hydraulic turbine is had more than needed the energy of current for reclaiming lift, and is translated into power output to the most described wind
Machine；
The energy of air-flow discharged by described gas-turbine for reclaiming VMC (Ventilation Mechanical Control System), and is translated into power output to described
Blower fan；
It also includes the intelligence control system of a described drive mechanism of control, and this intelligence control system includes DDC controller
And be electrically connected with this controller respectively temperature sensor, air velocity transducer, torque and speed sensors, flow sensor.Should
Described source pump, cooling tower, the operational factor of wind cabinet, by the data of each sensor acquisition and plug-in, are entered by controller
Row controls: the preferential power using hydraulic turbine output, is supplemented with the power of gas-turbine output, time not enough in ensureing cooling tower
Water temperature is maintained in the range of setting.
As a further improvement on the present invention, it is additionally provided with a stand-by motor, and described stand-by motor passes through reduction gearing
It is connected with described power transmission shaft；
Described DDC controller, according to water temperature, current rotation speed of fan in cooling tower, calculates the change of blower fan power demand
Amount；Further according to this variable quantity and the described hydraulic turbine, the size of gas-turbine offer power, therebetween during Shortcomings, drive
Described stand-by motor provides corresponding mesh power, makes described blower fan operate in the required range of speeds, makes cooling tower
Interior water temperature maintains in the range of setting；
And when the power sum that the described hydraulic turbine and gas-turbine provide is more than described blower fan required drive, described DDC
Stand-by motor is changed into power generation operation pattern by controller, in the case of making described blower fan maintain required rotation speed operation, and auxiliary electricity
Machine is converted into electrical energy for storage in electric storage device power surplus.
As a further improvement on the present invention, described hydraulic turbine bottom surface center arranges an Axial-running Out mouth of a river, and with
Coaxial line and vertically arranged water distributor import connect；Described hydraulic turbine outer arranges a tangential water inlet, described tangential water inlet
Mouth connects with cooling tower the second water return pipeline.
As a further improvement on the present invention, described gas-turbine is fixed on described cooling tower by support, air inlet and institute
Stating the exhaust duct of the VMC (Ventilation Mechanical Control System) mouth of pipe after reducing to connect, described gas-turbine gas outlet connects with escape pipe, described escape pipe
Connected with big escape pipe by concentric reducer.
As a further improvement on the present invention, the leaving condenser water mouth of described source pump draws the first cooling tower backwater
Pipe, described first cooling tower return pipe connects with described pump intake；The water inlet of described condenser and cooling tower flow pipe
Connect；The vaporizer outlet of described source pump connects with wind cabinet return pipe, described vaporizer water inlet and wind cabinet flow pipe
Connecting, chilled water, after stating vaporizer cooling, is transported to inside described wind cabinet carry out air by described wind cabinet return pipe
Cooling, then be delivered back into vaporizer by described wind cabinet flow pipe and cool down.
As a further improvement on the present invention, the water inlet of described wind cabinet connects with described wind cabinet return pipe, outlet with
Described wind cabinet flow pipe connects；The air outlet of told wind cabinet connects with the set ajutage of described VMC (Ventilation Mechanical Control System), and described set is sent
Airduct connects with an ajutage, and described wind cabinet return air inlet connects with the set backwind tube of described VMC (Ventilation Mechanical Control System), described set return air
Pipe connects and connects with a backwind tube；The fresh wind port of told wind cabinet connects with the fresh wind tube of described VMC (Ventilation Mechanical Control System), told wind cabinet
Exhaust outlet connects with the exhaust duct of described VMC (Ventilation Mechanical Control System).
As a further improvement on the present invention, described exhaust duct connects with diffuser pipe, and diffuser pipe connects with check valve, unidirectional
Valve is connected with little exhaust duct by concentric reducer, and described little exhaust duct connects with the air inlet of described gas-turbine.From exhaust duct
Gas out is done work by gas-turbine after concentric reducer accelerates, and drives described blower fan to operate.
Control method according to above-mentioned intelligent type energy saving central air conditioner system, it is characterised in that it comprises the steps:
(1) intelligence control system of a described drive mechanism of control is set, this intelligence control system include DDC controller and
The temperature sensor that is electrically connected with this controller respectively, air velocity transducer, torque and speed sensors, flow sensor, at this
The built-in data according to each sensor acquisition of controller and plug-in, by the computing of this program, to described source pump, cold
But tower, the operational factor of wind cabinet are controlled；Set the function corresponding relation between water temperature and required rotation speed of fan in cooling tower；
(2) start central air conditioner system, start source pump, cooling tower, wind cabinet so that it is be in running status；
(3) according to this internal temperature sensor of cooling tower and the data of the current torque and speed sensors of blower fan, and preset
Function corresponding relation between water temperature and required rotation speed of fan, calculates power P and the correspondence driving the required rotation speed of fan of operating
Required power increment Δ P；
(4) according to the speed probe of the hydraulic turbine or flow into the flow sensor in pipe, the now hydraulic turbine is calculated steady
Output P under running status3；
(5) according to the flow velocity of air in the rotational speed and torque of wind cabinet inner blower or pipeline, power of fan P is calculated1Increment
ΔP1；
(6) according to the torque and speed sensors of gas-turbine or gas-turbine and the hydraulic turbine, stand-by motor, the merit of blower fan of cooling tower
Rate relation, calculates gas-turbine power P5；
(7) automatically controlling according to following condition, in making cooling tower, water temperature is maintained in the range of setting:
Work as P3>=P, and Δ P3During >=Δ P, only make the hydraulic turbine operate, close gas-turbine, make air be directly discharged in air；
Work as P3≤ P, and Δ P3During≤Δ P, start gas-turbine operating, when freewheel clutch is in bonding state so that it is reach
P5+P3>=P, and Δ P5+ΔP3≥ΔP；Freewheel clutch is in when surmounting state, the air flow ventilation terminal that exhaust duct is discharged,
Cooling cooling water is discharged from ventilation terminal.
As a further improvement on the present invention；
Described step (1) also includes arranging a stand-by motor；
Described step (7) also includes: set the output of stand-by motor as P2, its output variable is Δ P2, then:
1. freewheel clutch is in bonding state:
Work as P5+P3≤ P, and Δ P5+ΔP3During≤Δ P, start stand-by motor operating so that it is reach P5+P2+P3During >=P, and
ΔP5+ΔP2+ΔP3>=Δ P, described stand-by motor is motor；
2. freewheel clutch is in and surmounts state:
Power P needed for blower fan of cooling tower operating declines, and works as P3>=P, and Δ P3During >=Δ P, stand-by motor starts generating mould
Formula, and electric energy more than needed is saved in electrical storage device；
Work as P3≤ P, and Δ P3During≤Δ P, stand-by motor is motor so that it is reach P5+P3>=P, and Δ P5+ΔP3≥Δ
P.Work as P1+P3-P >=0, and Δ P1+ΔP3During-Δ P >=0, now starting stand-by motor power generation mode, described stand-by motor is
Electromotor, and the electric energy making to have more than needed is stored in electrical storage device, drive stand-by motor externally to export mechanical power the most again
Rate.
As a further improvement on the present invention, it also comprises the steps:
The torque T of described wind cabinet blower fan1With rotating speed n1Measured by torque rotary speed sensor, its power P1Asked by formula (1)
, the power of fan P of wind cabinet1Increment be Δ P1, the output P of stand-by motor 52Tried to achieve by formula (2), output of hydraulic turbine
P3Tried to achieve by formula (3), the torque T of blower fan of cooling tower4With rotating speed n4Measured by torque rotary speed sensor, its power P4By formula
(1) try to achieve, the power P of gas-turbine5Tried to achieve by formula (4):
Described DDC controller is according to the power P of wind cabinet blower fan1Increment Delta P1Power P with gas-turbine5Difference X=Δ
P1-P5Control valve, to reach following effect:
1. during X >=0, DDC controller performs described step (7), the air flow gas-turbine that exhaust duct is discharged；
2. during X ＜ 0, DDC controller does not perform described step (7), and the air flow ventilation terminal that exhaust duct is discharged, from cloth wind
Cooling cooling water discharged by device, works as P3>=P, and Δ P3During >=Δ P, stand-by motor starts power generation mode, and by electric energy savings more than needed
In electrical storage device；Work as P3≤ P, and Δ P3During≤Δ P, stand-by motor is motor so that it is reach P5+P3>=P, and Δ P5+Δ
P3≥ΔP。
When exhaust duct expellant gas drives gas-turbine acting when bringing income for central air conditioner system to enter gas energy
Row reclaims, and does not reclaims.
The power of P: blower fan, W
The rotating speed of n: any instant, r/min
The torque of T: any instant, N*m
P=1.732*U*T*cos α * efficiency (2)
The power of P: motor, W
U: input voltage, V
I: input current, A
Cos α: power factor (PF)
P=Pn*ηt=γ QH* ηt (3)
The power of P: the hydraulic turbine, W
The severe of γ: water, N/m3
Q: discharge, m3/s
H: head, m
ηt: thermal efficiency of cycle
P5=P4-P2-P3 (4)
P2: the output of stand-by motor 5, W
P3: exerting oneself of the hydraulic turbine 205, W
P4: blower fan of cooling tower power, W
P5: the power of gas-turbine 206, W
Described cooling tower water outlet is provided with temperature sensor (not indicating in figure), detects the cold of cooling tower water outlet
But coolant-temperature gage T1, the cooling water temperature T of cooling tower outlet1Temperature T arranged with cooling tower outlet2Difference DELTA T=T1-
T2, DDC controller controls converter according to the rotating speed of Δ T and blower fan, Frequency Converter Control stand-by motor 5, to reach following effect:
1. during Δ T >=0, stand-by motor 5 output, make blower fan 204 reach rated speed；2., during Δ T ＜ 0, stand-by motor 5 absorbs merit
Rate.
The new wind that the part return air that backwind tube is returned is come in described fresh wind tube mixes at described wind cabinet, passes through
After filter, heat, cool down, humidify, purification etc. processes, then deliver to each room through ajutage.Another part that backwind tube is returned
Return air delivers to gas-turbine by described exhaust duct reducing after being accelerated, drive gas-turbine acting to provide power for blower fan.Described water pump
From described wind cabinet out cooling water pressurization after enter the described hydraulic turbine, inside the described hydraulic turbine acting drive blower fan operating
The described water distributor of rear entrance, after water-locator sprays out cooling, returns to described wind cabinet by described cooling tower flow pipe and follows
Ring.
Different new wind of building accounts for the ratio difference of total wind, and exhaust air rate is the most different, and the energy that gas-turbine provides is the most different.
The variety of priority driven device of blower fan of cooling tower is the hydraulic turbine, when when being short of power of hydraulic turbine offer, the hydraulic turbine and gas
Turbine drives blower fan to rotate jointly, when the hydraulic turbine and gas-turbine drive when being short of power of offer jointly, the hydraulic turbine, gas-turbine,
Stand-by motor drives blower fan to rotate jointly, makes blower fan operate in nominal speed range.
When gas-turbine power is 0, the variety of priority driven device of blower fan of cooling tower is still the hydraulic turbine, when the power that the hydraulic turbine provides
Time not enough, the hydraulic turbine and stand-by motor drive blower fan to rotate jointly.
When the power that the hydraulic turbine and steam turbine provide is more than blower fan required drive, stand-by motor changes electromotor, blower fan into
In the case of rated speed operates, electromotor is converted into electrical energy for storage in electric storage device power surplus.
Present two aspects of recovery body of the described energy-saving central air conditioning system energy carrying out energy regenerating:
One, in current central air-conditioning cooling tower, in order to ensure the flow of system cooling water, water pump lift typically can be big
In the lift that cooling tower is actually needed, lift more than needed has certain energy, and the present invention reclaims this part by the hydraulic turbine
Energy, and it is converted into the power of blower fan of cooling tower.
Two, the air velocity that VMC (Ventilation Mechanical Control System) ejects is generally 6 8m/s, has certain kinetic energy, and the present invention passes through gas
Turbine or gas distribution pipe reclaim the energy of this part.
The invention have the benefit that
The most energy-conservation.Pass through the hydraulic turbine, it is achieved the recovery of water-pump excess energy；Exhaust outlet aerodynamic energy is realized by gas-turbine
Recovery, and the energy reclaimed is converted into the power of blower fan of cooling tower.Decrease the energy expenditure of motor, it might even be possible to nothing
Need motor or externally generate electricity, improve the utilization ratio of energy.
2. economical.Motor is as highly energy-consuming equipment, and the present invention is by the transformation to central air-conditioning, it is achieved that be greatly lowered
The purpose of cooling tower electric machine power, even without motor, so the present invention can save substantial amounts of electric energy, good economy performance.
3. operating is stable.The power of cooling water flow, exhaust air rate and motor in central air conditioner system is the most permanent
, so blower fan of cooling tower operates in the case of metastable, whole system operates the most at steady-state.
Above-mentioned is inventive technique scheme, and below in conjunction with accompanying drawing and detailed description of the invention, the present invention will be further described.
Accompanying drawing explanation
Fig. 1 is central air conditioner system overall structure schematic diagram.
Fig. 2 is cooling tower structure perspective diagram.
Fig. 3 is ventilation terminal structural representation.
Fig. 4 is cooling tower drive mechanism partial enlarged drawing.
Fig. 5 is source pump internal structure schematic diagram.
Fig. 6 is that gas-turbine air inlet is connected partial enlarged drawing with exhaust duct.
Wherein, the label in each portion is expressed as follows:
A, cold and heat source system B, VMC (Ventilation Mechanical Control System)
1, source pump 101, compressor 102, condenser 103, expansion valve 104, vaporizer 2, cooling tower 201,
Cooling tower body 202, drive mechanism 203, sectional drive shaft 204, blower fan 205, the hydraulic turbine 206, gas-turbine 207, subtract
Speed gear train 208, support 209, gas-turbine escape pipe 210, big escape pipe 3, wind cabinet 4, water pump 5, stand-by motor 6, the
One cooling tower return pipe the 7, second cooling tower return pipe 8, cooling tower flow pipe 9, wind cabinet return pipe 10, wind cabinet flow pipe
11, gather ajutage 12, set backwind tube 13, fresh wind tube 14, exhaust duct 15, little exhaust duct 16, water distributor 17, prop up and send
Airduct 18, backwind tube 19, check valve 20, diffuser pipe 21, valve 22, ventilation terminal 23, ventilation terminal air inlet pipe.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings
The present invention further describes.Should be appreciated that specific embodiment described herein, and need not only in order to explain the present invention
In limiting the present invention.
Refer to Fig. 1 and Fig. 6, a kind of intelligent type energy saving central air conditioner system that the present invention provides and control method thereof, its
In can carry out the intelligent type energy saving central air conditioner system of energy regenerating, including: cold and heat source system A and VMC (Ventilation Mechanical Control System) B, it also wraps
Include:
For refrigeration or the source pump 1 of heat supply, the effect of described source pump 1 is cooling or heat cycles cold
But water so that it is reach required temperature；
It is arranged in outdoor for cooling circulating cooling water and the cooling tower 2 with the function that recovers energy；Described cooling tower 2 by
Cooling tower body 201 and drive mechanism 202 form.
Air filtered, heat, cool down, humidify, the wind cabinet 3 of purified treatment, cooling water is carried out pressurization and cold
But water is transported to the water pump 4 of cooling tower 2；
The parts such as compressor 101, condenser 102, expansion valve 103 and vaporizer 104 are included inside described wind cabinet 3.
Described drive mechanism 202, including power transmission shaft 203, blower fan 204, the hydraulic turbine 205, gas-turbine 206；Described gas-turbine
206 are connected to be in same axis, Vertical Square with described blower fan 204, the hydraulic turbine 205 by variable-speed bearing or freewheel clutch
On the sectional drive shaft 203 arranged；
The described hydraulic turbine 205 is had more than needed the energy of current for reclaiming lift, and is translated into power output to the most described
Blower fan 204；
The energy of air-flow discharged by described gas-turbine 206 for reclaiming VMC (Ventilation Mechanical Control System), and is translated into power output extremely
Described blower fan 204；
It also includes the intelligence control system of a described drive mechanism of control 202, and this intelligence control system includes DDC control
Device and the temperature sensor being electrically connected with this controller respectively, air velocity transducer, torque and speed sensors, flow sensor.
This controller is by the data of each sensor acquisition and plug-in, to described source pump 1, cooling tower 2, the operation of wind cabinet 3
Parameter is controlled: the preferential power using the hydraulic turbine 205 output, is supplemented with the power of gas-turbine 206 output time not enough, to protect
Water temperature in card cooling tower is maintained in the range of setting.
The present embodiment intelligent type energy saving central air conditioner system, is additionally provided with a stand-by motor 5, described stand-by motor 5 and institute
State power transmission shaft 203 to be connected by train of reduction gears 207.
Described DDC controller, according to water temperature, current blower fan 204 rotating speed in cooling tower 2, calculates merit needed for blower fan 204
Variation delta P of rate；The size of power is provided further according to this variable quantity and the described hydraulic turbine 205, gas-turbine 206, the two it
Between Shortcomings time, the stand-by motor 5 described in driving provides corresponding mesh power, makes described blower fan 204 turn required
Operating in the range of speed, in making cooling tower 2, water temperature maintains in the range of setting；
When the power sum that the described hydraulic turbine 205 and gas-turbine 206 provide is more than described blower fan 204 required drive, institute
The DDC controller stated changes stand-by motor 5 into power generation operation pattern, makes described blower fan 204 maintain the feelings of required rotation speed operation
Under condition, 5 power surplus of stand-by motor are converted into electrical energy for storage in electric storage device.The described hydraulic turbine 205 bottom surface center
Position arranges an Axial-running Out mouth of a river, and connects with coaxial line and vertically arranged water distributor 16 import；The described hydraulic turbine 205 outer
Arranging a tangential water inlet, described tangential water inlet connects with cooling tower 2 second return pipe 7.
Described gas-turbine 206 is fixed on described cooling tower 2 by support 208, and air inlet and check valve 19 are after reducing
Gas outlet connects, and the air inlet of described check valve 19 connects with diffuser pipe 20, described diffuser pipe 20 and the row of described VMC (Ventilation Mechanical Control System) B
The mouth of pipe of airduct 14 connects, and described gas-turbine gas outlet connects with gas-turbine escape pipe 209, and described gas-turbine escape pipe 209 leads to
Cross concentric reducer to connect with big escape pipe 210.
Described ventilation terminal 22 is connected with ventilation terminal air inlet pipe 23 outlet, and ventilation terminal air inlet pipe 23 import is connected with valve 21,
The air that exhaust duct 14 is discharged has mass dryness fraction compared with feature big, that temperature is relatively low, discharges cooling cooling water from ventilation terminal 22.
The leaving condenser water mouth of described source pump 1 draws the first cooling tower return pipe 6, described first cooling tower return pipe
The other end of 6 connects with described pump intake；The water inlet of described condenser 102 connects with cooling tower flow pipe 8.Described heat
Vaporizer 104 outlet of pump assembly 1 connects with wind cabinet return pipe 9, and described vaporizer water inlet connects with wind cabinet flow pipe 10,
Chilled water, after lowering the temperature through described vaporizer 104, is transported to inside described wind cabinet 3 enter air by described wind cabinet return pipe 9
Row cooling, then be delivered back into vaporizer 104 cool down by described wind cabinet flow pipe 10.
The water inlet of described wind cabinet 3 connects with described wind cabinet return pipe 9, and outlet connects with described wind cabinet flow pipe 10；
The air outlet of told wind cabinet 3 connects with the set ajutage 11 of described VMC (Ventilation Mechanical Control System) B, described set ajutage 11 and an ajutage
17 connect, and described wind cabinet return air inlet connects with the set backwind tube 12 of described VMC (Ventilation Mechanical Control System) B, described set backwind tube 12 with prop up back
Airduct 18 connects；The fresh wind port of told wind cabinet 3 connects with the fresh wind tube 13 of described VMC (Ventilation Mechanical Control System) B, the exhaust outlet of told wind cabinet 3 with
The exhaust duct 14 of described VMC (Ventilation Mechanical Control System) B connects.
Described exhaust duct 14 connects with diffuser pipe 20, and diffuser pipe 20 connects with check valve 19, and check valve 19 is by the biggest
Microcephaly connects with little exhaust duct 15, and described little exhaust duct 15 connects with the air inlet of described gas-turbine 206.From exhaust duct 14 out
Gas done work by gas-turbine 206 after concentric reducer accelerates, drive described blower fan 204 to operate.
The new wind that the part return air that set backwind tube 12 is returned and described fresh wind tube 13 are come in mixes at described wind cabinet 3
Close, through filtering, heat, cool down, humidifying, after the process such as purification, then deliver to each room through ajutage 17.Set backwind tube
Another part return air that 12 return delivers to gas-turbine 206 by described exhaust duct 14 reducing after being accelerated, drive gas-turbine to do work and be
Blower fan 204 provides power.4, described water pump from described wind cabinet 3 out cooling water pressurization after enter the described hydraulic turbine 205,
Inside the described hydraulic turbine 205, acting enters described water distributor 16 after driving blower fan 204 operating, sprays out cooling from water distributor 16
After, return to described wind cabinet 3 recirculation by described cooling tower flow pipe 8.
Different new wind of building accounts for the ratio difference of total wind, and exhaust air rate is the most different, and the energy that gas-turbine provides is the most different.
The variety of priority driven device of blower fan of cooling tower 204 is the hydraulic turbine 205, when when being short of power of the hydraulic turbine 205 offer, water
Turbine 205 and gas-turbine 206 drive blower fan to rotate jointly, when the hydraulic turbine 205 and gas-turbine 206 drive the power of offer not jointly
During foot, the hydraulic turbine 205, gas-turbine 206, stand-by motor 5 jointly drive blower fan 204 to rotate, make blower fan 204 at nominal speed range
Interior operating.
The described hydraulic turbine 205 power P1When being 0, the variety of priority driven device of blower fan of cooling tower 204 is still the hydraulic turbine 205, when
When being short of power of the hydraulic turbine 205 offer, the hydraulic turbine 205 and stand-by motor 5 drive blower fan to rotate jointly.When the hydraulic turbine 205 He
When the power that gas-turbine 206 provides is more than blower fan 204 required drive, stand-by motor 5 changes electromotor into, and blower fan 204 is at specified turn
In the case of speed operating, electromotor is converted into electrical energy for storage in electric storage device power surplus.
The embodiment of the present invention additionally provides the control method of a kind of intelligent type energy saving central air conditioner system, and it includes walking as follows
Rapid:
(1) arranging the intelligence control system of a described drive mechanism of control 202, this intelligence control system includes DDC control
Device and the temperature sensor being electrically connected with this controller respectively, air velocity transducer, torque and speed sensors, flow sensor,
At the built-in data according to each sensor acquisition of this controller and plug-in, by the computing of this program, to described heat pump machine
Group 1, cooling tower 2, the operational factor of wind cabinet 3 are controlled；In setting cooling tower 2 between water temperature and required blower fan 204 rotating speed
Function corresponding relation；
(2) start central air conditioner system, start source pump 1, cooling tower 2, wind cabinet 3 so that it is be in running status；
(3) according to temperature sensor in cooling tower 2 and the data of the current torque and speed sensors of blower fan 204, and preset
Function corresponding relation between water temperature and required blower fan 204 rotating speed, calculates and drives the power P of the required rotation speed of fan of operating and right
Power increment Δ P needed for should；
(4) according to the speed probe of the hydraulic turbine 205 or flow into the flow sensor in pipe, the now hydraulic turbine is calculated
Output P under 205 even running states3；
(5) according to the flow velocity of air in the rotational speed and torque of wind cabinet inner blower (not indicating in figure) or pipeline, blower fan is calculated
Power P1Increment Delta P1；
(6) according to the torque and speed sensors of gas-turbine 206 or gas-turbine 206 and the hydraulic turbine 205, stand-by motor 5, cooling
The power relation of tower blower fan 204, calculates gas-turbine 206 power P5；
(7) automatically controlling according to following condition, in making cooling tower 2, water temperature is maintained in the range of setting:
Work as P3>=P, and Δ P3During >=Δ P, only make the hydraulic turbine 205 operate, close gas-turbine 206, make air be directly discharged into greatly
In gas；
Work as P3≤ P, and Δ P3During≤Δ P, start gas-turbine 206 and operate, when freewheel clutch is in bonding state so that it is
Reach P5+P3>=P, and Δ P5+ΔP3≥ΔP；Freewheel clutch is in when surmounting state, the air flow cloth that exhaust duct is discharged
Wind device 22, discharges cooling cooling water from ventilation terminal 22.
Described step (1) also includes arranging a stand-by motor 5；
Described step (7) also includes: set the output of stand-by motor 5 as P2, its output variable is Δ P2, then:
1. freewheel clutch is in bonding state:
Work as P5+P3≤ P, and Δ P5+ΔP3During≤Δ P, start stand-by motor 5 and operate so that it is reach P5+P2+P3During >=P,
And Δ P5+ΔP2+ΔP3>=Δ P, described stand-by motor 5 is motor；
2. freewheel clutch is in and surmounts state:
The power P that blower fan of cooling tower 204 operates required declines, and works as P3>=P, and Δ P3During >=Δ P, stand-by motor 5 starts to be sent out
Power mode, and electric energy more than needed is saved in electrical storage device；
Work as P3≤ P, and Δ P3During≤Δ P, stand-by motor 5 is motor so that it is reach P5+P3>=P, and Δ P5+ΔP3≥
ΔP。
Work as P1+P3-P >=0, and Δ P1+ΔP3During-Δ P >=0, now start stand-by motor 5 power generation mode, described auxiliary
Motor 5 is electromotor, and is stored in electrical storage device by the electric energy making to have more than needed, and drives stand-by motor 5 the most defeated the most again
Go out mechanical output.
The torque T of the blower fan (not indicating in figure) of described wind cabinet 31With rotating speed n1Measured by torque rotary speed sensor, its power
P1Tried to achieve by formula (1), the power of fan P of wind cabinet 31Increment be Δ P1, the output P of stand-by motor 52Asked by formula (2)
, the hydraulic turbine 205 output P3Tried to achieve by formula (3), the torque T of blower fan of cooling tower 2044With rotating speed n4Passed by torque rotary speed
Sensor is measured, its power P4Tried to achieve by formula (1), the power P of gas-turbine 2065Tried to achieve by formula (4).
Described DDC controller is according to the power P of wind cabinet 3 blower fan1Increment Delta P1Power P with gas-turbine 2065Difference X
=Δ P1-P5Control valve 21, to reach following effect:
1. during X >=0, DDC controller performs described step (7), the air flow gas-turbine 206 that exhaust duct 14 is discharged；
2. during X ＜ 0, DDC controller does not perform described step (7), the air flow ventilation terminal 22 that exhaust duct 14 is discharged, from
Ventilation terminal 22 discharges cooling cooling water, works as P3>=P, and Δ P3During >=Δ P, stand-by motor 5 starts power generation mode, and by more than needed
Electric energy is saved in electrical storage device；Work as P3≤ P, and Δ P3During≤Δ P, stand-by motor 5 is motor so that it is reach P5+P3>=P,
And Δ P5+ΔP3≥ΔP。
When the driving gas-turbine acting of exhaust duct 14 expellant gas brings income for central air conditioner system to gas energy
Reclaim, do not reclaim.
The power of P: blower fan, W
The rotating speed of n: any instant, r/min
The torque of T: any instant, N*m
P=1.732*U*T*cos α * efficiency (2)
The power of P: motor, W
U: input voltage, V
I: input current, A
Cos α: power factor (PF)
P=Pn*ηt=γ QH* ηt (3)
The output of P: the hydraulic turbine, W
The severe of γ: water, N/m3
Q: discharge, m3/s
H: head, m
ηt: thermal efficiency of cycle
P5=P4-P2-P3 (4)
P2: the output of stand-by motor 5, W
P3: exerting oneself of the hydraulic turbine 205, W
P4: blower fan of cooling tower power, W
P5: the power of gas-turbine 206, W
Described cooling tower 2 water outlet is provided with temperature sensor (not indicating in figure), detection cooling tower 2 water outlet
Cooling water temperature T1, the cooling water temperature T of described cooling tower 2 outlet1Temperature T arranged with cooling tower 2 outlet2Difference
Δ T=T1-T2, described DDC controller controls converter according to the rotating speed of Δ T and blower fan 204, Frequency Converter Control stand-by motor 5,
To reach following effect: 1. during Δ T >=0, stand-by motor 5 output, make blower fan 204 reach rated speed；2. during Δ T ＜ 0,
Stand-by motor 5 absorbed power.
Cooling tower mates the applicable hydraulic turbine and gas-turbine, the part respectively water pump and fresh air ventilator consumed
Energy regenerating is also converted into the power that blower fan of cooling tower operates, thus reduces blower fan and need the power of motor of coupling, it might even be possible to
Just blower fan can be made to run well without mating motor, some situation can also be converted into electric energy the surplus reclaimed by electromotor
And store, reach economic and energy-conservation effect.
Present two aspects of recovery body of the described energy-saving central air conditioning system energy carrying out energy regenerating:
1, in current central air-conditioning cooling tower, in order to ensure the flow of system cooling water, water pump lift typically can be big
In the lift that cooling tower is actually needed, lift more than needed has certain energy, and the present invention reclaims this part by the hydraulic turbine
Energy, and it is converted into the power of blower fan of cooling tower.
2, the air velocity that VMC (Ventilation Mechanical Control System) ejects is generally 6 8m/s, has certain kinetic energy, and the present invention passes through turbine
Machine or gas distribution pipe reclaim the energy of this part.
The emphasis of the present invention essentially consists in:
1, energy-conservation.Pass through the hydraulic turbine, it is achieved the recovery of water-pump excess energy；Exhaust outlet aerodynamic energy is realized by gas-turbine
Recovery, and the energy reclaimed is converted into the power of blower fan of cooling tower.Decrease the energy expenditure of motor, it might even be possible to nothing
Need motor or externally generate electricity, improve the utilization ratio of energy.
2, economical.Motor is as highly energy-consuming equipment, and the present invention is by the transformation to central air-conditioning, it is achieved that be greatly lowered
The purpose of cooling tower electric machine power, even without motor, so the present invention can save substantial amounts of electric energy, good economy performance.
3, operating is stable.The power of cooling water flow, exhaust air rate and motor in central air conditioner system is the most permanent
, so blower fan of cooling tower operates in the case of metastable, whole system operates the most at steady-state.
The above, be only presently preferred embodiments of the present invention, not impose any restrictions the technical scope of the present invention,
Therefore use or the technical characteristic of approximation identical with the above embodiment of the present invention, all within protection scope of the present invention.
Claims (10)
1. an intelligent type energy saving central air conditioner system, comprising: cold and heat source system and VMC (Ventilation Mechanical Control System), it is characterised in that it is also
Including:
For refrigeration or the source pump of heat supply, the effect of described source pump is cooling or the cooling water of heat cycles,
Reach required temperature；
Being arranged in outdoor for cooling circulating cooling water and the cooling tower with the function that recovers energy, described cooling tower is by cooling tower
Body and drive mechanism composition；
Air filtered, heat, cool down, humidify, the wind cabinet of purified treatment, include compressor, cold inside described wind cabinet
The parts such as condenser, expansion valve and vaporizer；
To cooling down the water pump that water pressurizes and cooling water is transported to cooling tower；
Described drive mechanism, including power transmission shaft, blower fan, the hydraulic turbine, gas-turbine；Described gas-turbine by variable-speed bearing or surmount from
On the sectional drive shaft that clutch and described blower fan, the hydraulic turbine, gas-turbine are connected to be in same axis, vertical direction is arranged；
The described hydraulic turbine is had more than needed the energy of current for reclaiming lift, and is translated into power output to the most described blower fan；
The energy of air-flow discharged by described gas-turbine for reclaiming VMC (Ventilation Mechanical Control System), and is translated into power output to described wind
Machine；
It also includes the intelligence control system of a described drive mechanism of control, and this intelligence control system includes DDC controller and divides
The temperature sensor that is not electrically connected with this controller, air velocity transducer, speed probe, flow sensor, this controller is logical
Cross data and the plug-in of each sensor acquisition, described source pump, cooling tower, the operational factor of wind cabinet be controlled:
The preferential power using hydraulic turbine output, is supplemented with the power of gas-turbine output time not enough, to ensure that the water temperature in cooling tower is protected
Hold in the range of setting.
Intelligent type energy saving central air conditioner system the most according to claim 1, it is characterised in that it is additionally provided with an auxiliary electricity
Machine, described stand-by motor is connected with described power transmission shaft by reduction gearing pair；
Described DDC controller, according to water temperature, current rotation speed of fan in cooling tower, calculates the variable quantity of blower fan power demand；
Further according to this variable quantity and the described hydraulic turbine, the size of gas-turbine offer power, therebetween during Shortcomings, drive described
Stand-by motor corresponding mesh power is provided, make described blower fan operate in the required range of speeds, make water in cooling tower
Temperature maintains in the range of setting；
And when the power sum that the described hydraulic turbine and gas-turbine provide is more than described blower fan required drive, described DDC controls
Stand-by motor is changed into power generation operation pattern by device, in the case of making described blower fan maintain required rotation speed operation, and stand-by motor handle
Power surplus is converted into electrical energy for storage in electric storage device.
Intelligent type energy saving central air conditioner system the most according to claim 1, it is characterised in that in described hydraulic turbine bottom surface
Heart position arranges an Axial-running Out mouth of a river, and connects with coaxial line and vertically arranged water distributor import；Described hydraulic turbine outer sets
Putting a tangential water inlet, described tangential water inlet connects with cooling tower the second water return pipeline；Described gas-turbine is fixed on by support
On described cooling tower, the exhaust duct of air inlet and the described VMC (Ventilation Mechanical Control System) mouth of pipe after reducing connects, gas outlet and escape pipe phase
Connecing, described escape pipe is connected with big escape pipe by concentric reducer.
The energy-saving central air conditioning system carrying out energy regenerating the most according to claim 2, it is characterised in that described heat pump
The leaving condenser water mouth of unit draws the first cooling tower return pipe, described first cooling tower return pipe and described pump intake phase
Connect；The water inlet of described condenser connects with cooling tower flow pipe；The vaporizer outlet of described source pump and wind cabinet backwater
Pipe connects, and described vaporizer water inlet connects with wind cabinet flow pipe.
The energy-saving central air conditioning system carrying out energy regenerating the most according to claim 1, it is characterised in that described wind cabinet
Water inlet connect with described wind cabinet return pipe, outlet connects with described wind cabinet flow pipe；The air outlet of told wind cabinet and institute
The set ajutage stating VMC (Ventilation Mechanical Control System) connects, and return air inlet connects with the set backwind tube of described VMC (Ventilation Mechanical Control System)；Told wind cabinet new
Air port connects with the fresh wind port of described VMC (Ventilation Mechanical Control System), and the exhaust outlet of told wind cabinet connects with the exhaust duct of described VMC (Ventilation Mechanical Control System).
The energy-saving central air conditioning system carrying out energy regenerating the most according to claim 1, it is characterised in that described air draft
Pipe is connected with little exhaust duct by concentric reducer, and described little exhaust duct connects with the air inlet of described gas-turbine.From exhaust duct
Gas out is done work by gas-turbine after concentric reducer accelerates, and drives described blower fan to operate.
7. according to the control method of the described intelligent type energy saving central air conditioner system of one of claim 1～6, it is characterised in that its
Comprise the steps:
(1) arranging the intelligence control system of a described drive mechanism of control, this intelligence control system includes DDC controller and difference
The temperature sensor that is electrically connected with this controller, air velocity transducer, speed probe, flow sensor, in this controller
Put the data according to each sensor acquisition and plug-in, by the computing of this program, to described source pump, cooling tower, wind
The operational factor of cabinet is controlled；Set the function corresponding relation between water temperature and required rotation speed of fan in cooling tower；
(2) start central air conditioner system, start source pump, cooling tower, wind cabinet so that it is be in running status；
(3) according to this internal temperature sensor of cooling tower and the data of the current speed probe of blower fan, and the water temperature preset and institute
Need the function corresponding relation between rotation speed of fan, calculate the merit driven needed for the power P of the required rotation speed of fan of operating and correspondence
Rate increment Delta P；
(4) according to the speed probe of the hydraulic turbine or flow into the flow sensor in pipe, now hydraulic turbine even running is calculated
Output P under state3；
(5) according to the flow velocity of air in the rotational speed and torque of wind cabinet inner blower or pipeline, power of fan P is calculated1And increment Delta
P1；
(6) torque and speed sensors or gas-turbine according to gas-turbine close with the hydraulic turbine, stand-by motor, the power of blower fan of cooling tower
System, calculates gas-turbine power P5；
(7) automatically controlling according to following condition, in making cooling tower, water temperature is maintained in the range of setting:
Work as P3>=P, and Δ P3During >=Δ P, only make the hydraulic turbine operate, close gas-turbine, make air be directly discharged in air；
Work as P3≤ P, and Δ P3During≤Δ P, start gas-turbine operating, when freewheel clutch is in bonding state so that it is reach P5+P3
>=P, and Δ P5+ΔP3≥ΔP；Freewheel clutch is in when surmounting state, and the air flow ventilation terminal that exhaust duct is discharged, from cloth
Cooling cooling water discharged by wind device.
The control method of intelligent type energy saving central air conditioner system the most according to claim 7, it is characterised in that
Described step (1) also includes arranging a stand-by motor；
Described step (7) also includes: set the output of stand-by motor as P2, its output variable is Δ P2, then:
1. freewheel clutch is in bonding state:
Work as P5+P3≤ P, and Δ P5+ΔP3During≤Δ P, start stand-by motor operating so that it is reach P5+P2+P3During >=P, and Δ P5+
ΔP2+ΔP3>=Δ P, described stand-by motor is motor；
2. freewheel clutch is in and surmounts state:
Power P needed for blower fan of cooling tower operating declines, and works as P3>=P, and Δ P3During >=Δ P, stand-by motor starts power generation mode,
And electric energy more than needed is saved in electrical storage device；
Work as P3≤ P, and Δ P3During≤Δ P, stand-by motor is motor so that it is reach P5+P3>=P, and Δ P5+ΔP3≥ΔP。
The control method of intelligent type energy saving central air conditioner system the most according to claim 8, it is characterised in that its also include as
Lower step:
Described stand-by motor is generator motor；
Work as P5+P3-P >=0, and Δ P5+ΔP3During-Δ P >=0, now start stand-by motor power generation mode, and the electric energy having more than needed will be made
It is stored in electrical storage device, drives the external output mechanical power of stand-by motor the most again.
The control method of intelligent type energy saving central air conditioner system the most according to claim 8, it is characterised in that it also includes
Following steps:
The torque T of the blower fan of described wind cabinet1With rotating speed n1Measured by torque rotary speed sensor, its power P1Tried to achieve by formula (1),
The power of fan P of wind cabinet1Increment be Δ P1, the output P of stand-by motor2Tried to achieve by formula (2), hydraulic turbine output
P3Tried to achieve by formula (3), the torque T of blower fan of cooling tower4With rotating speed n4Measured by torque rotary speed sensor, its power P4By formula
(1) try to achieve, the power P of gas-turbine5Tried to achieve by formula (4):
Described DDC controller is according to the power of fan P of wind cabinet1Increment Delta P1Power P with gas-turbine5Difference X=Δ P1-P5
Controlling to select valve, to reach following effect: 1. during X >=0, DDC controller performs described step (7), the sky that exhaust duct is discharged
Air-flow is to gas-turbine；
2. during X ＜ 0, DDC controller does not perform described step (7), and the air flow ventilation terminal that exhaust duct is discharged is arranged from ventilation terminal
Go out cooling cooling water, work as P3>=P, and Δ P3During >=Δ P, stand-by motor starts power generation mode, and electric energy savings more than needed is being stored
In electric installation；Work as P3≤ P, and Δ P3During≤Δ P, stand-by motor is motor so that it is reach P5+P3>=P, and Δ P5+ΔP3≥
ΔP。
When exhaust duct expellant gas drives gas-turbine acting when bringing income for central air conditioner system to carry out back gas energy
Receive, do not reclaim.
The power of P: blower fan, W
The rotating speed of n: any instant, r/min
The torque of T: any instant, N*m
P=1.732*U*T*cos α * efficiency (2)
The power of P: motor, W
U: input voltage, V
I: input current, A
Cos α: power factor (PF)
P=Pn*ηt=γ QH* ηt (3)
The power of P: the hydraulic turbine, W
The severe of γ: water, N/m3
Q: discharge, m3/s
H: head, m
ηt: thermal efficiency of cycle
P5=P4-P2-P3 (4)
P2: the output of stand-by motor 5, W
P3: exerting oneself of the hydraulic turbine 205, W
P4: blower fan of cooling tower power, W
P5: the power of gas-turbine 206, W
Described cooling tower water outlet is provided with temperature sensor, the cooling water temperature T of detection cooling tower water outlet1, cooling tower
The cooling water temperature T of outlet1Temperature T arranged with cooling tower outlet2Difference DELTA T=T1-T2, DDC controller is according to Δ
The rotating speed control converter of T and blower fan, Frequency Converter Control stand-by motor, to reach following effect: 1. during Δ T >=0, stand-by motor
Output, makes blower fan reach rated speed；2. during Δ T ＜ 0, stand-by motor absorbed power.
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| CN202011261959.2A CN112378054B (en) | 2016-10-10 | 2016-10-10 | Intelligent energy-saving central air-conditioning system and control method thereof |
| CN201610885144.9A CN106225112A (en) | 2016-10-10 | 2016-10-10 | A kind of intelligent type energy saving central air conditioner system and control method thereof |
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| CN112378054A (en) | 2021-02-19 |
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