CN108644984A - Factory floor temprature control method and system - Google Patents
Factory floor temprature control method and system Download PDFInfo
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- CN108644984A CN108644984A CN201810470061.2A CN201810470061A CN108644984A CN 108644984 A CN108644984 A CN 108644984A CN 201810470061 A CN201810470061 A CN 201810470061A CN 108644984 A CN108644984 A CN 108644984A
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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
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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
- F24F11/70—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
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/28—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/50—Air quality properties
- F24F2110/65—Concentration of specific substances or contaminants
- F24F2110/70—Carbon dioxide
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid 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
- F24F2140/20—Heat-exchange fluid temperature
-
- 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
- F24F2140/40—Damper positions, e.g. open or closed
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
This application involves a kind of factory floor temprature control method and systems.The method includes：The operating parameter of acquisition current system in real time；Heat exchange coefficient and parameter enthalpy are calculated according to the operating parameter；Enthalpy bias is calculated according to the parameter enthalpy；Tap water heat-exchange system and combination wind cabinet system are controlled according to the operating parameter, heat exchange coefficient and enthalpy bias；Wherein, the tap water heat-exchange system is for once cooling down to air；The combination wind cabinet system is for being cooled down twice the air after once cooling down.More accurately factory floor can be controlled with temperature control system using this method, and the energy consumption of combination wind cabinet system can be made lower.
Description
Technical field
This application involves technical field of temperature control, more particularly to a kind of factory floor temprature control method and are
System.
Background technology
It is a kind of air treatment system assembled by various air-treatment function sections to combine wind cabinet system.For to sky
Gas such as is mixed, flows, filter, cool down, heat, drying, humidifying at the processing.In industrial electronic factory, precision machinery manufactory, spin
It knits the occasions such as workshop, vehicle spray painting workshop, GMP pharmaceutical factories, food factory, pure water workshop, hospital surgery department, ICU and has and widely answer
With.Effect during combining wind cabinet operation in order to be optimal with minimum energy consumption, it is necessary to combining wind cabinet system
It is adjusted in real time.
However, at present in some factory floors, the original production of polysilicon workshop of photovoltaic battery panel is such as produced, workshop needs
Combination wind cabinet system is utilized to keep workshop temperature.Generally when the temperature of factory floor changes, or when new air temperature compared with
Gao Shi, the chilled water water supply for usually adjusting combination wind cabinet system further adjust the temperature of factory floor or new air temperature,
The cooling of factory floor in this way fully relies on combination wind cabinet system, and energy consumption is higher.And current traditional adjusting method passes through
The parameter of the wind cabinet system of acquisition combination in real time directly controls valve, the wind turbine in combination wind cabinet system by parameter, from
And achieve the purpose that adjusting.But only directly combination wind cabinet system is controlled by collected data, combination wind can be caused
The control of cabinet system is not accurate, and the energy consumption for combining wind cabinet system will not be preferably minimized.
Invention content
Based on this, it is necessary in view of the above technical problems, factory floor temperature can accurately be controlled by providing one kind, and
The lower factory floor temprature control method of energy consumption and system.
A kind of factory floor temprature control method, the method includes：The operating parameter of acquisition current system in real time；Root
Heat exchange coefficient and parameter enthalpy are calculated according to the operating parameter；Enthalpy bias is calculated according to the parameter enthalpy；According to
The operating parameter, heat exchange coefficient and enthalpy bias control tap water heat-exchange system and combination wind cabinet system；Wherein,
The tap water heat-exchange system is for once cooling down to air；The combination wind cabinet system is used for the sky after once cooling down
Gas is cooled down twice.
The operating parameter includes in one of the embodiments,：The temperature and humidity of wind cabinet fresh wind tube, wind cabinet backwind tube
Temperature and humidity, the temperature and humidity of wind cabinet ajutage, the temperature and humidity of room air and gas concentration lwevel, freezing
Water feed pipe temperature, chilled water return pipe temperature；The parameter enthalpy includes：Fresh air enthalpy, return air enthalpy, air-supply enthalpy and
Room air enthalpy.
It is described in one of the embodiments, that heat exchange coefficient and parameter enthalpy are calculated according to the operating parameter,
Including：The fresh air enthalpy is calculated according to the temperature and humidity of the wind cabinet fresh wind tube；According to the temperature of the wind cabinet backwind tube
The return air enthalpy is calculated with humidity；The air-supply enthalpy is calculated according to the temperature and humidity of the wind cabinet ajutage；According to institute
The temperature and humidity for stating room air calculates the room air enthalpy；It is blown according to the temperature of the wind cabinet fresh wind tube, wind cabinet
Heat exchange coefficient described in the temperature and chilled water feed pipe temperature computation of pipe.
It is described in one of the embodiments, that enthalpy bias is calculated according to the parameter enthalpy, including：By fresh air enthalpy with
Room air enthalpy makes the difference to obtain system enthalpy bias；It makes the difference room air enthalpy and preset air enthalpy to obtain indoor demand
Enthalpy bias.
It is described in one of the embodiments, to be controlled according to the operating parameter, heat exchange coefficient and enthalpy bias
Wind cabinet system is combined, including：When the indoor demand enthalpy bias is less than zero, reduces the frequency of pressure fan and reduce freezing
Water meter low temperature valve aperture；If the indoor demand enthalpy bias is still less than zero after freezing water meter low temperature valve aperture reaches minimum, basis
Heat exchange coefficient adjusts tap water inlet valve aperture；When the indoor demand enthalpy bias is more than zero, handed over according to heat
Change efficiency-adjusted tap water inlet valve aperture；If tap water inlet valve aperture reaches the indoor demand after maximum/minimum
Enthalpy bias then improves the frequency of pressure fan and increases freezing water meter low temperature valve aperture still greater than zero.
It is described in one of the embodiments, that tap water inlet valve aperture is adjusted according to heat exchange coefficient, including：When
When the heat exchange coefficient is more than default exchange efficiency, increase tap water inlet valve aperture；When the heat exchange coefficient
When less than default exchange efficiency, reduce tap water inlet valve aperture.
It is described in one of the embodiments, to be controlled according to the operating parameter, heat exchange coefficient and enthalpy bias
Wind cabinet system is combined, including：When the indoor gas concentration lwevel is more than default gas concentration lwevel, increase wind cabinet fresh air
Tube valve aperture.
It is described in one of the embodiments, to be controlled according to the operating parameter, heat exchange coefficient and enthalpy bias
Wind cabinet system is combined, including：When system enthalpy bias is less than zero, increase wind cabinet fresh wind tube valve opening；If wind cabinet fresh wind tube
The system enthalpy bias then increases freezing water meter low temperature valve aperture still less than zero after valve opening reaches maximum；When system enthalpy
When bias is more than zero, reduce wind cabinet fresh wind tube valve opening；If wind cabinet fresh wind tube valve opening reaches and meets the minimum of system and open
The system enthalpy bias then reduces freezing water meter low temperature valve aperture still greater than zero after degree.
A kind of factory floor temperature control system, the system comprises：Tap water heat-exchange system and combination wind cabinet system
System；The tap water heat-exchange system is connected to external environment, for once being cooled down to air, and by the sky after primary cooling
Gas is delivered to the combination wind cabinet system；The combination wind cabinet system is connected to the tap water heat-exchange system, for primary
Air after cooling is cooled down twice, and by the air delivery after reducing temperature twice to factory floor..
The tap water heat-exchange system includes in one of the embodiments,：Coil heat exchanger and water supply pipe, institute
The water inlet for stating coil heat exchanger is connect with the water supply pipe, water outlet and the service water equipment of the coil heat exchanger
Connection；Tap water inlet valve is provided on the water supply pipe；The combination wind cabinet system includes：Primary filter screen, cold water
Section, bringing-up section, humidifier section, pressure fan and middle effect strainer；The primary filter screen, cold water section, bringing-up section, humidifier section, pressure fan
And middle effect strainer is sequentially connected；The primary filter screen is used for preliminary filtering dust particle；It is provided in the cold water section cold
Freeze waterpipe, freezing water meter low temperature valve is provided on the chilled water pipeline, the cold water section is for being cooled down twice air；
It is provided with heating component in the bringing-up section, for heating air；The humidifier section is provided with jet chimney, the jet chimney
On be provided with steam valve, the humidifier section is used for air wetting；The blower-use will be in will combine the air in wind cabinet system
It is transported in factory floor；It is described it is middle effect strainer for filtering air in impurity；The combination wind cabinet system includes：Newly
Air hose, backwind tube and ajutage；The fresh wind tube is connected to the tap water heat-exchange system, is used for tap water heat-exchange system
Air delivery after primary cooling is to the primary filter screen；The backwind tube is used for the air delivery in factory floor to described
Primary filter screen；The ajutage is used for the air delivery after the combination wind cabinet secondary system cooling to factory floor；It is described
Fresh air tube valve is provided in fresh wind tube；In the same time, only there are one in running order with bringing-up section for the cold water section.
A kind of factory floor temperature control equipment, described device include：Acquisition module, for acquiring current system in real time
Operating parameter；Computing module, for calculating heat exchange coefficient and parameter enthalpy according to the operating parameter；It is additionally operable to root
Enthalpy bias is calculated according to the parameter enthalpy；Control module, for according to the operating parameter, heat exchange coefficient and enthalpy
Bias control combination wind cabinet system.
A kind of computer equipment, including memory and processor, the memory are stored with computer program, the processing
Device realizes following steps when executing the computer program：
The operating parameter of acquisition current system in real time；
Heat exchange coefficient and parameter enthalpy are calculated according to the operating parameter；
Enthalpy bias is calculated according to the parameter enthalpy；
According to the operating parameter, heat exchange coefficient and enthalpy bias control combination wind cabinet system.
A kind of computer readable storage medium, is stored thereon with computer program, and the computer program is held by processor
Following steps are realized when row：
The operating parameter of acquisition current system in real time；
Heat exchange coefficient and parameter enthalpy are calculated according to the operating parameter；
Enthalpy bias is calculated according to the parameter enthalpy；
According to the operating parameter, heat exchange coefficient and enthalpy bias control combination wind cabinet system.
Above-mentioned factory floor temprature control method and system first carry out fresh air by tap water heat-exchange system primary
Cooling；The fresh air after once cooling down is cooled down twice by combining wind cabinet system again, combination wind cabinet system can be reduced
Energy consumption.And by the operating parameter for acquiring current system in real time, heat exchange coefficient and parameter are calculated by operating parameter
Enthalpy calculates enthalpy bias by parameter enthalpy, is chosen and controlled by operating parameter, heat exchange coefficient and enthalpy bias
System strategy.And factory floor is controlled with temperature control system based on the control strategy chosen.Pass through the operation of acquisition
Parameter calculates heat exchange coefficient and enthalpy bias, then is chosen by operating parameter, heat exchange coefficient and enthalpy bias
Control strategy, which carries out control, more accurately factory floor to be controlled with temperature control system.
Description of the drawings
Fig. 1 is the structural schematic diagram of factory floor temperature control system in one embodiment；
Fig. 2 is the flow diagram of factory floor temprature control method in one embodiment；
Fig. 3 is the structure diagram of factory floor temperature control equipment in one embodiment；
Fig. 4 is the structure diagram of computing module in one embodiment；
Fig. 5 is the internal structure chart of one embodiment Computer equipment.
Reference numeral：1 it is tap water heat-exchange system, 2 be combination wind cabinet system, 100 be acquisition module, 200 is to calculate mould
Block, 210 be parameter enthalpy computing unit, 220 be heat exchange coefficient computing unit, 230 be enthalpy bias computing unit, 300
Module in order to control.
Specific implementation mode
It is with reference to the accompanying drawings and embodiments, right in order to make the object, technical solution and advantage of the application be more clearly understood
The application is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the application, not
For limiting the application.
As shown in Figure 1, providing a kind of factory floor temperature control system, wherein factory floor is controlled with temperature is
System includes：Tap water heat-exchange system 1 and combination wind cabinet system 2；The tap water heat-exchange system 1 is connected to external environment, is used
In once being cooled down to air, and by the air delivery after primary cooling to the combination wind cabinet system 2；The combination wind cabinet
System 2 is connected to the tap water heat-exchange system 1, for being cooled down twice to the air after once cooling down, and by secondary drop
Air delivery after temperature is to factory floor.The tap water heat-exchange system 1 includes：Coil heat exchanger and water supply pipe, institute
The water inlet for stating coil heat exchanger is connect with the water supply pipe, water outlet and the service water equipment of the coil heat exchanger
Connection；Tap water inlet valve is provided on the water supply pipe.Coil pipe can be first passed through before fresh air enters combination wind cabinet
Heat exchanger, fresh air exchanges heat with tap water in coil heat exchanger, and new air temperature reduces, and tap water temperature increases.Temperature is increased
Tap water be delivered to the factory floor equipment for needing warm water, utilized.And the fresh air once to cool down is transmitted to combination wind
Cabinet system 2.It includes fresh wind tube, backwind tube and ajutage to combine wind cabinet system 2, and wherein fresh wind tube is with tap water heat exchange
1 connection of system, for the air delivery after tap water heat-exchange system 1 once cools down to the primary filter screen；The return air is effective
In by the air delivery in factory floor to the primary filter screen, the ajutage is used for the combination wind cabinet system 2 two times
Air delivery after cooling is to factory floor.Fresh air tube valve is provided on fresh wind tube.By fresh wind tube enter fresh air and by
The return air that backwind tube enters, first passes around primary filter screen after entering combination wind cabinet, and primary filter screen is used for preliminary filtering dust
Particle.It is cold water section after primary filter screen, cold water section is used to cool down to air, and chilled water pipeline is provided in cold water section,
Freezing water meter low temperature valve is provided on chilled water pipeline.It is bringing-up section after cold water section, bringing-up section is used for atmosphere temperature rising, bringing-up section
In be provided with heating component.It is humidifier section after bringing-up section, humidifier section is used to increase the humidity of air, and humidifier section is provided with steam
Pipeline humidifies air by steam, steam valve is provided on jet chimney.It is pressure fan after humidifier section, being used for will
The air combined in wind cabinet is sent into interior.Middle effect strainer is additionally provided with after pressure fan, middle effect strainer is for further filtering
Impurity in air.Cold water section and bringing-up section are alternately opened in combining wind cabinet, when indoor temperature is excessively high, then open cold water section pass
Close bringing-up section；When indoor temperature is too low, then closes cold water section and open bringing-up section.Wherein, when opening cold water section closing bringing-up section,
Indoor temperature can be reduced by increasing the frequency of pressure fan；Temperature in house can be increased by reducing the frequency of pressure fan；Increase chilled water
The aperture of table low temperature valve can reduce indoor temperature；Indoor temperature can be increased by reducing the aperture of freezing water meter low temperature valve；Increase originally
The aperture of water inlet valve can reduce indoor temperature；Indoor temperature can be increased by reducing the aperture of tap water inlet valve；Increase
Big fresh air tube valve can reduce indoor temperature, and reduce the concentration of indoor carbon dioxide；Reducing fresh air tube valve can increase
Indoor temperature.
Above-mentioned factory floor temperature control system, when the temperature of factory floor changes, or when new air temperature compared with
Gao Shi carries out heat exchange cooling by tap water heat-exchange system to fresh air first, and tap water temperature increases new air temperature and reduces at this time,
The tap water of high temperature can be used for needing the factory floor equipment of warm water, reduce the energy consumption of heating tap water.Tap water heat exchange system
Fresh air after primary cooling is delivered to combination wind cabinet system by system, and combination wind cabinet system delivers the air to after being cooled down twice
Factory floor.Combination wind cabinet system cools down again to the fresh air after once cooling down, and the load of combination wind cabinet system is reduced, into one
Step reduces energy consumption.
In one embodiment, as shown in Fig. 2, providing a kind of factory floor temprature control method, including following step
Suddenly：
Step S102 acquires the operating parameter of current system in real time.
Specifically, operating parameter includes：The temperature and pressure of the tap water supply pipe of coil heat exchanger connection；Tap water returns
The temperature and pressure of water pipe；And the flow of running water pipe.The temperature of the chilled water feed pipe temperature of chilled water pipeline in cold water section
Degree and pressure；The temperature and pressure of chilled water return pipe；And the flow of chilled water pipe.The temperature and humidity of wind cabinet fresh wind tube；
The temperature and humidity of wind cabinet backwind tube；The temperature and humidity of wind cabinet ajutage；The air quantity of wind cabinet ajutage；The corresponding interior of wind cabinet
The temperature and humidity and gas concentration lwevel of air；The frequency of pressure fan；Freeze the aperture of water meter low temperature valve.Operating parameter passes through
Sensor is acquired.Sensor includes：Temperature sensor, pressure sensor, humidity sensor, flowmeter, air flow sensor
Deng.
Step S104 calculates heat exchange coefficient and parameter enthalpy according to operating parameter.
Specifically, parameter enthalpy includes：Fresh air enthalpy, return air enthalpy, air-supply enthalpy and room air enthalpy.According to wind
The temperature and humidity of cabinet fresh wind tube calculates fresh air enthalpy；Return air enthalpy is calculated according to the temperature and humidity of wind cabinet backwind tube；According to
The temperature and humidity of wind cabinet ajutage calculates air-supply enthalpy；Room air enthalpy is calculated according to the temperature and humidity of room air；
According to the temperature of wind cabinet fresh wind tube, the temperature of wind cabinet ajutage and chilled water feed pipe temperature computation heat exchange coefficient.
In one embodiment, calculating the equation of fresh air enthalpy can be：
Hv=1.005Tv+ (2500.9+1.86Tv) × Dv
Wherein, the specific heat at constant pressure of 1.005kj/ (kg*K) is temperature when being 300K air；1.86kj/ (kg*K) is temperature
For 300K when vapor specific heat at constant pressure；The latent heat of vaporization of water when 2500.9kj/kg is zero degrees celsius.Specific heat at constant pressure be
In the case that pressure is constant, certain mass temperature of unit mass increases the heat absorbed needed for 1K.The latent heat of vaporization be temperature not
When change, the heat of certain liquid substance of unit mass absorbed in vaporescence.Tv is the temperature of wind cabinet fresh wind tube；Dv is
The humidity of wind cabinet fresh wind tube；Hv is fresh air enthalpy.
In one embodiment, the equation of calculating return air enthalpy can be：
Hr=1.005Tr+ (2500.9+1.86Tr) × Dr
Wherein, the specific heat at constant pressure of 1.005kj/ (kg*K) is temperature when being 300K air；1.86kj/ (kg*K) is temperature
For 300K when vapor specific heat at constant pressure；The latent heat of vaporization of water when 2500.9kj/kg is zero degrees celsius.Tr is wind cabinet backwind tube
Temperature；Dr is the humidity of wind cabinet backwind tube；Hr is return air enthalpy.
In one embodiment, calculating the equation of air-supply enthalpy can be：
Hs=1.005Ts+ (2500.9+1.86Ts) × Ds
Wherein, the specific heat at constant pressure of 1.005kj/ (kg*K) is temperature when being 300K air；1.86kj/ (kg*K) is temperature
For 300K when vapor specific heat at constant pressure；The latent heat of vaporization of water when 2500.9kj/kg is zero degrees celsius.Ts is wind cabinet ajutage
Temperature；Ds is the humidity of wind cabinet ajutage；Hs is air-supply enthalpy.
In one embodiment, calculating the equation of room air enthalpy can be：
Ha=1.005Ta+ (2500.9+1.86Ta) × Da
Wherein, the specific heat at constant pressure of 1.005kj/ (kg*K) is temperature when being 300K air；1.86kj/ (kg*K) is temperature
For 300K when vapor specific heat at constant pressure；The latent heat of vaporization of water when 2500.9kj/kg is zero degrees celsius.Ta is room air
Temperature；Da is the humidity of room air；Ha is room air enthalpy.
In one embodiment, calculating the equation of heat exchange coefficient can be：
Wherein, t1 is the temperature of wind cabinet fresh wind tube；T2 is the temperature of wind cabinet ajutage；Tw1 is chilled water feed pipe temperature；
Eg is heat exchange coefficient.
Step S106 calculates enthalpy bias according to parameter enthalpy.
Specifically, enthalpy bias includes system enthalpy bias and indoor demand enthalpy bias.By fresh air enthalpy and interior
Air enthalpy makes the difference to obtain system enthalpy bias；It makes the difference room air enthalpy and preset air enthalpy to obtain indoor demand enthalpy
Bias.
In one embodiment, the equation of computing system enthalpy bias can be：
△ H1=Hv-Ha
Wherein, Hv is fresh air enthalpy；Ha is room air enthalpy；△ H1 are system enthalpy bias.
In one embodiment, calculating the equation of indoor demand enthalpy bias can be：
△ H=Ha-H0
Wherein, Ha is room air enthalpy；H0 is preset room air enthalpy；△ H are that indoor demand enthalpy is inclined
Value.
Step S108 controls tap water heat-exchange system according to the operating parameter, heat exchange coefficient and enthalpy bias
And combination wind cabinet system.
Specifically, the tap water heat-exchange system is for once cooling down to air；The combination wind cabinet system is used for
Air after once cooling down is cooled down twice.When the temperature of factory floor changes, or when new air temperature is higher,
Heat exchange cooling is carried out to fresh air by tap water heat-exchange system first, tap water temperature increases new air temperature and reduces at this time, high temperature
Tap water can be used for needing the factory floor equipment of warm water, reduce the energy consumption of heating tap water.Tap water heat-exchange system will
Fresh air after primary cooling is delivered to combination wind cabinet system, and combination wind cabinet system delivers the air to factory after being cooled down twice
Workshop.Combination wind cabinet system cools down again to the fresh air after once cooling down, will be in the air delivery to factory floor of reducing temperature twice.
Wherein, tap water heat-exchange system tap water inlet valve aperture in order to control is controlled.Control combination wind cabinet system chilled water in order to control
Table low temperature valve aperture, the frequency of wind turbine and wind cabinet fresh wind tube valve opening.
More specifically, when indoor demand enthalpy bias is less than zero, reduces the frequency of pressure fan and reduce freezing water meter
Low temperature valve aperture；After if freezing water meter low temperature valve aperture reaches minimum, if that is, demand enthalpy in freezing water meter low temperature valve closing rear chamber
Bias then adjusts tap water inlet valve aperture still less than zero according to heat exchange coefficient.It is preset when heat exchange coefficient is more than
When exchange efficiency, increase tap water inlet valve aperture；When heat exchange coefficient is less than default exchange efficiency, reduce tap water
Inlet valve aperture.
More specifically, when indoor demand enthalpy bias is more than zero, tap water inlet valve is adjusted according to heat exchange coefficient
Door aperture；When heat exchange coefficient is more than default exchange efficiency, increase tap water inlet valve aperture；Work as heat exchange coefficient
When less than default exchange efficiency, reduce tap water inlet valve aperture.If tap water inlet valve aperture reaches maximum/minimum
Afterwards, if that is, after tap water inlet valve opens or closes completely, indoor demand enthalpy bias then improves air-supply still greater than zero
The frequency and increase freezing water meter low temperature valve aperture of machine.
More specifically, when indoor gas concentration lwevel is more than default gas concentration lwevel, increase wind cabinet fresh air pipe valve
Door aperture.
More specifically, when system enthalpy bias is less than zero, increase wind cabinet fresh wind tube valve opening；If wind cabinet fresh air pipe valve
After door aperture reaches maximum, if that is, after fresh air tube valve opening completely, system enthalpy bias then increases freezing still less than zero
Water meter low temperature valve aperture.
More specifically, when system enthalpy bias is more than zero, reduce wind cabinet fresh wind tube valve opening；If wind cabinet fresh air pipe valve
System enthalpy bias then reduces freezing water meter low temperature valve aperture still greater than zero after door aperture reaches the minimum aperture for meeting system.
More specifically, chilled water heat exchange amount and gas converting heat amount can be recorded with real-time storage, real-time tracking point is carried out
Analysis and energy consumption data analysis, and the situation of change of computing system Energy Efficiency Ratio.
In one embodiment, the equation of calculating chilled water heat exchange amount can be：
Qw=4.186 × L × (Th-Tg)
Wherein, 4.186kj/ (kg*K) is the specific heat capacity of water；L is the flow of chilled water pipe；Th is chilled water return water tube temperature
Degree；Tg is chilled water feed pipe temperature；Qw is chilled water heat exchange amount.
In one embodiment, the equation of calculating gas converting heat amount can be：
Qg=ρ × V × (Hs-Hr)
Wherein, ρ is gas density；V is the air quantity of wind cabinet ajutage；Hs is air-supply enthalpy；Hr is return air enthalpy；Qg is gas
Body heat exchange amount.
Above-mentioned factory floor temprature control method and system first carry out fresh air by tap water heat-exchange system primary
Cooling；The fresh air after once cooling down is cooled down twice by combining wind cabinet system again, combination wind cabinet system can be reduced
Energy consumption.And by the operating parameter for acquiring current system in real time, heat exchange coefficient and parameter are calculated by operating parameter
Enthalpy calculates enthalpy bias by parameter enthalpy, is chosen and controlled by operating parameter, heat exchange coefficient and enthalpy bias
System strategy.And factory floor is controlled with temperature control system based on the control strategy chosen.Pass through the operation of acquisition
Parameter calculates heat exchange coefficient and enthalpy bias, then is chosen by operating parameter, heat exchange coefficient and enthalpy bias
Control strategy, which carries out control, more accurately factory floor to be controlled with temperature control system.
It should be understood that although each step in the flow chart of Fig. 2 is shown successively according to the instruction of arrow, this
A little steps are not that the inevitable sequence indicated according to arrow executes successively.Unless expressly state otherwise herein, these steps
It executes there is no the limitation of stringent sequence, these steps can execute in other order.Moreover, at least part in Fig. 2
Step may include that either these sub-steps of multiple stages or stage are executed in synchronization to multiple sub-steps
It completes, but can execute at different times, the execution sequence in these sub-steps or stage is also not necessarily to be carried out successively,
But it can either the sub-step of other steps or at least part in stage execute in turn or alternately with other steps.
In one embodiment, as shown in figure 3, providing a kind of factory floor temperature control equipment, including：Acquire mould
Block 100, computing module 200 and control module 300, wherein：
Acquisition module 100, the operating parameter for acquiring current system in real time；
Computing module 200, for calculating heat exchange coefficient and parameter enthalpy according to operating parameter；It is additionally operable to according to ginseng
Number enthalpy calculates enthalpy bias；
Control module 300, for according to operating parameter, heat exchange coefficient and enthalpy bias control combination wind cabinet system
System.
Control module 300 is additionally operable to, when indoor demand enthalpy bias is less than zero, reduce frequency and the reduction of pressure fan
Freeze water meter low temperature valve aperture；If freezing water meter low temperature valve aperture reaches in minimum rear chamber, demand enthalpy bias is still less than zero, basis
Heat exchange coefficient adjusts tap water inlet valve aperture.When indoor demand enthalpy bias is more than zero, imitated according to heat exchange
Rate adjusts tap water inlet valve aperture；If tap water inlet valve aperture reaches demand enthalpy bias in maximum/minimum rear chamber
Still greater than zero, then improves the frequency of pressure fan and increase freezing water meter low temperature valve aperture.
Control module 300 is additionally operable to, when heat exchange coefficient is more than default exchange efficiency, increase tap water inlet valve
Aperture；When heat exchange coefficient is less than default exchange efficiency, reduce tap water inlet valve aperture.
Control module 300 is additionally operable to, when indoor gas concentration lwevel is more than default gas concentration lwevel, increase wind cabinet
Fresh wind tube valve opening.
Control module 300 is additionally operable to, when system enthalpy bias is less than zero, increase wind cabinet fresh wind tube valve opening；If wind
System enthalpy bias then increases freezing water meter low temperature valve aperture still less than zero after cabinet fresh wind tube valve opening reaches maximum.Work as system
When enthalpy bias is more than zero, reduce wind cabinet fresh wind tube valve opening；If wind cabinet fresh wind tube valve opening, which reaches, meets system most
System enthalpy bias then reduces freezing water meter low temperature valve aperture still greater than zero after low aperture.
As shown in figure 3, providing a kind of structure diagram of computing module 200, wherein computing module 200 includes：Parameter enthalpy
It is worth computing unit 210, heat exchange coefficient computing unit 220 and enthalpy bias computing unit 230.
Parameter enthalpy computing unit 210, for calculating fresh air enthalpy according to the temperature and humidity of wind cabinet fresh wind tube；According to wind
The temperature and humidity of cabinet backwind tube calculates return air enthalpy；Air-supply enthalpy is calculated according to the temperature and humidity of wind cabinet ajutage；According to
The temperature and humidity of room air calculates room air enthalpy.
Heat exchange coefficient computing unit 220, for according to the temperature of wind cabinet fresh wind tube, the temperature of wind cabinet ajutage and
Chilled water feed pipe temperature computation heat exchange coefficient.
Enthalpy bias computing unit 230, for making the difference fresh air enthalpy and room air enthalpy to obtain system enthalpy bias；
It makes the difference room air enthalpy and preset air enthalpy to obtain indoor demand enthalpy bias.
Specific restriction about factory floor temperature control equipment may refer to above for factory floor temperature
The restriction of control method, details are not described herein.Modules in above-mentioned factory floor temperature control equipment can whole or portion
Divide and is realized by software, hardware and combinations thereof.Above-mentioned each module can be in the form of hardware embedded in or independently of computer equipment
In processor in, can also in a software form be stored in the memory in computer equipment, in order to processor calling hold
The corresponding operation of the above modules of row.
In one embodiment, a kind of computer equipment is provided, which can be terminal, internal structure
Figure can be as shown in Figure 4.The computer equipment includes the processor connected by system bus, memory, network interface, display
Screen and input unit.Wherein, the processor of the computer equipment is for providing calculating and control ability.The computer equipment is deposited
Reservoir includes non-volatile memory medium, built-in storage.The non-volatile memory medium is stored with operating system and computer journey
Sequence.The built-in storage provides environment for the operation of operating system and computer program in non-volatile memory medium.The calculating
The network interface of machine equipment is used to communicate by network connection with external terminal.When the computer program is executed by processor with
Realize a kind of factory floor temprature control method.The display screen of the computer equipment can be liquid crystal display or electronic ink
The input unit of water display screen, the computer equipment can be the touch layer covered on display screen, can also be computer equipment
Button, trace ball or the Trackpad being arranged on shell can also be external keyboard, Trackpad or mouse etc..
It will be understood by those skilled in the art that structure shown in Fig. 4, is only tied with the relevant part of application scheme
The block diagram of structure does not constitute the restriction for the computer equipment being applied thereon to application scheme, specific computer equipment
May include either combining certain components than more or fewer components as shown in the figure or being arranged with different components.
In one embodiment, a kind of computer equipment, including memory and processor are provided, is stored in memory
Computer program, the processor realize following steps when executing computer program：
The operating parameter of acquisition current system in real time；Heat exchange coefficient and parameter enthalpy are calculated according to operating parameter；
Enthalpy bias is calculated according to parameter enthalpy；According to operating parameter, heat exchange coefficient and enthalpy bias control combination wind cabinet system
System.
In one embodiment, following steps are also realized when processor executes computer program：
Fresh air enthalpy is calculated according to the temperature and humidity of wind cabinet fresh wind tube；It is calculated according to the temperature and humidity of wind cabinet backwind tube
Return air enthalpy；Air-supply enthalpy is calculated according to the temperature and humidity of wind cabinet ajutage；It is calculated according to the temperature and humidity of room air
Room air enthalpy；According to the temperature of wind cabinet fresh wind tube, the temperature of wind cabinet ajutage and chilled water feed pipe temperature computation heat
Measure exchange efficiency.
In one embodiment, following steps are also realized when processor executes computer program：
It makes the difference fresh air enthalpy and room air enthalpy to obtain system enthalpy bias；By room air enthalpy and preset air
Enthalpy makes the difference to obtain indoor demand enthalpy bias.
In one embodiment, following steps are also realized when processor executes computer program：
When indoor demand enthalpy bias is less than zero, reduces the frequency of pressure fan and reduce freezing water meter low temperature valve aperture；
It is adjusted certainly according to heat exchange coefficient still less than zero if freezing water meter low temperature valve aperture reaches demand enthalpy bias in minimum rear chamber
Water inlet valve aperture；When indoor demand enthalpy bias is more than zero, tap water inlet valve is adjusted according to heat exchange coefficient
Door aperture；If tap water inlet valve aperture reaches demand enthalpy bias in maximum/minimum rear chamber improves air-supply still greater than zero
The frequency and increase freezing water meter low temperature valve aperture of machine.
In one embodiment, following steps are also realized when processor executes computer program：
When heat exchange coefficient is more than default exchange efficiency, increase tap water inlet valve aperture；When heat exchange is imitated
When rate is less than default exchange efficiency, reduce tap water inlet valve aperture.
In one embodiment, following steps are also realized when processor executes computer program：
When indoor gas concentration lwevel is more than default gas concentration lwevel, increase wind cabinet fresh wind tube valve opening.
In one embodiment, following steps are also realized when processor executes computer program：
When system enthalpy bias is less than zero, increase wind cabinet fresh wind tube valve opening；If wind cabinet fresh wind tube valve opening reaches
System enthalpy bias then increases freezing water meter low temperature valve aperture still less than zero after to maximum；When system enthalpy bias is more than zero, subtract
Small wind cabinet fresh wind tube valve opening；If wind cabinet fresh wind tube valve opening reaches system enthalpy bias after the minimum aperture for meeting system
Still greater than zero, then reduce freezing water meter low temperature valve aperture.
In one embodiment, a kind of computer readable storage medium is provided, computer program is stored thereon with, is calculated
Machine program realizes following steps when being executed by processor：
The operating parameter of acquisition current system in real time；Heat exchange coefficient and parameter enthalpy are calculated according to operating parameter；
Enthalpy bias is calculated according to parameter enthalpy；According to operating parameter, heat exchange coefficient and enthalpy bias control combination wind cabinet system
System.
In one embodiment, following steps are also realized when computer program is executed by processor：
Fresh air enthalpy is calculated according to the temperature and humidity of wind cabinet fresh wind tube；It is calculated according to the temperature and humidity of wind cabinet backwind tube
Return air enthalpy；Air-supply enthalpy is calculated according to the temperature and humidity of wind cabinet ajutage；It is calculated according to the temperature and humidity of room air
Room air enthalpy；According to the temperature of wind cabinet fresh wind tube, the temperature of wind cabinet ajutage and chilled water feed pipe temperature computation heat
Measure exchange efficiency.
In one embodiment, following steps are also realized when computer program is executed by processor：
It makes the difference fresh air enthalpy and room air enthalpy to obtain system enthalpy bias；By room air enthalpy and preset air
Enthalpy makes the difference to obtain indoor demand enthalpy bias.
In one embodiment, following steps are also realized when computer program is executed by processor：
When indoor demand enthalpy bias is less than zero, reduces the frequency of pressure fan and reduce freezing water meter low temperature valve aperture；
It is adjusted certainly according to heat exchange coefficient still less than zero if freezing water meter low temperature valve aperture reaches demand enthalpy bias in minimum rear chamber
Water inlet valve aperture；When indoor demand enthalpy bias is more than zero, tap water inlet valve is adjusted according to heat exchange coefficient
Door aperture；If tap water inlet valve aperture reaches demand enthalpy bias in maximum/minimum rear chamber improves air-supply still greater than zero
The frequency and increase freezing water meter low temperature valve aperture of machine.
In one embodiment, following steps are also realized when computer program is executed by processor：
When heat exchange coefficient is more than default exchange efficiency, increase tap water inlet valve aperture；When heat exchange is imitated
When rate is less than default exchange efficiency, reduce tap water inlet valve aperture.
In one embodiment, following steps are also realized when computer program is executed by processor：
When indoor gas concentration lwevel is more than default gas concentration lwevel, increase wind cabinet fresh wind tube valve opening.
In one embodiment, following steps are also realized when computer program is executed by processor：
When system enthalpy bias is less than zero, increase wind cabinet fresh wind tube valve opening；If wind cabinet fresh wind tube valve opening reaches
System enthalpy bias then increases freezing water meter low temperature valve aperture still less than zero after to maximum；When system enthalpy bias is more than zero, subtract
Small wind cabinet fresh wind tube valve opening；If wind cabinet fresh wind tube valve opening reaches system enthalpy bias after the minimum aperture for meeting system
Still greater than zero, then reduce freezing water meter low temperature valve aperture.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer
In read/write memory medium, the computer program is when being executed, it may include such as the flow of the embodiment of above-mentioned each method.Wherein,
Any reference to memory, storage, database or other media used in each embodiment provided herein,
Including non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of above example can be combined arbitrarily, to keep description succinct, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield is all considered to be the range of this specification record.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, under the premise of not departing from the application design, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the protection domain of the application patent should be determined by the appended claims.
Claims (10)
1. a kind of factory floor temprature control method, which is characterized in that the method includes：
The operating parameter of acquisition current system in real time；
Heat exchange coefficient and parameter enthalpy are calculated according to the operating parameter；
Enthalpy bias is calculated according to the parameter enthalpy；
Tap water heat-exchange system and combination wind cabinet system are controlled according to the operating parameter, heat exchange coefficient and enthalpy bias
System；
Wherein, the tap water heat-exchange system is for once cooling down to air；The combination wind cabinet system is used for primary
Air after cooling is cooled down twice.
2. according to the method described in claim 1, it is characterized in that,
The operating parameter includes：The temperature and humidity of wind cabinet fresh wind tube, the temperature and humidity of wind cabinet backwind tube, wind cabinet ajutage
Temperature and humidity, the temperature and humidity of room air and gas concentration lwevel, chilled water feed pipe temperature, chilled water return water
Tube temperature degree；
The parameter enthalpy includes：Fresh air enthalpy, return air enthalpy, air-supply enthalpy and room air enthalpy.
3. according to the method described in claim 2, it is characterized in that, described calculate heat exchange coefficient according to the operating parameter
And parameter enthalpy, including：
The fresh air enthalpy is calculated according to the temperature and humidity of the wind cabinet fresh wind tube；According to the temperature of the wind cabinet backwind tube and
Humidity calculates the return air enthalpy；The air-supply enthalpy is calculated according to the temperature and humidity of the wind cabinet ajutage；According to described
The temperature and humidity of room air calculates the room air enthalpy；According to the temperature of the wind cabinet fresh wind tube, wind cabinet ajutage
Temperature and chilled water feed pipe temperature computation described in heat exchange coefficient.
4. according to the method described in claim 3, it is characterized in that, described calculate enthalpy bias, packet according to the parameter enthalpy
It includes：
It makes the difference fresh air enthalpy and room air enthalpy to obtain system enthalpy bias；By room air enthalpy and preset air enthalpy
It makes the difference to obtain indoor demand enthalpy bias.
5. according to the method described in claim 4, it is characterized in that, it is described according to the operating parameter, heat exchange coefficient with
And enthalpy bias controls tap water heat-exchange system and combination wind cabinet system, including：
When the indoor demand enthalpy bias is less than zero, reduces the frequency of pressure fan and reduce freezing water meter low temperature valve aperture；
If the indoor demand enthalpy bias is still less than zero after freezing water meter low temperature valve aperture reaches minimum, according to heat exchange coefficient tune
Save tap water inlet valve aperture；
When the indoor demand enthalpy bias is more than zero, tap water inlet valve aperture is adjusted according to heat exchange coefficient；If
The indoor demand enthalpy bias then improves pressure fan still greater than zero after tap water inlet valve aperture reaches maximum/minimum
Frequency and increase freezing water meter low temperature valve aperture.
6. according to the method described in claim 5, it is characterized in that, described adjust tap water inlet valve according to heat exchange coefficient
Door aperture, including：
When the heat exchange coefficient is more than default exchange efficiency, increase tap water inlet valve aperture；
When the heat exchange coefficient is less than default exchange efficiency, reduce tap water inlet valve aperture.
7. according to the method described in claim 4, it is characterized in that, it is described according to the operating parameter, heat exchange coefficient with
And enthalpy bias controls tap water heat-exchange system and combination wind cabinet system, including：
When the indoor gas concentration lwevel is more than default gas concentration lwevel, increase wind cabinet fresh wind tube valve opening.
8. according to the method described in claim 4, it is characterized in that, it is described according to the operating parameter, heat exchange coefficient with
And enthalpy bias controls tap water heat-exchange system and combination wind cabinet system, including：
When system enthalpy bias is less than zero, increase wind cabinet fresh wind tube valve opening；If wind cabinet fresh wind tube valve opening reaches most
The system enthalpy bias then increases freezing water meter low temperature valve aperture still less than zero after big；
When system enthalpy bias is more than zero, reduce wind cabinet fresh wind tube valve opening；If wind cabinet fresh wind tube valve opening reaches full
The system enthalpy bias then reduces freezing water meter low temperature valve aperture still greater than zero after the minimum aperture of pedal system.
9. a kind of factory floor temperature control system, which is characterized in that the system comprises：Tap water heat-exchange system and group
Close wind cabinet system；
The tap water heat-exchange system is connected to external environment, for once being cooled down to air, and will be after primary cooling
Air delivery is to the combination wind cabinet system；
The combination wind cabinet system is connected to the tap water heat-exchange system, for carrying out secondary drop to the air after once cooling down
Temperature, and by the air delivery after reducing temperature twice to factory floor.
10. system according to claim 9, which is characterized in that
The tap water heat-exchange system includes：Coil heat exchanger and water supply pipe, the water inlet of the coil heat exchanger with
The water supply pipe connection, the water outlet of the coil heat exchanger are connect with service water equipment；The coil heat exchanger is used
In once being cooled down to air；Tap water inlet valve is provided on the water supply pipe；
The combination wind cabinet system includes：Primary filter screen, cold water section, bringing-up section, humidifier section, pressure fan and middle effect strainer；Institute
Primary filter screen, cold water section, bringing-up section, humidifier section, pressure fan and middle effect strainer is stated to be sequentially connected；The primary filter screen is for just
Step filtering dust particle；It is provided with chilled water pipeline in the cold water section, it is cold that freezing water meter is provided on the chilled water pipeline
Valve, the cold water section is for being cooled down twice air；It is provided with heating component in the bringing-up section, for heating air；
The humidifier section is provided with jet chimney, and steam valve is provided on the jet chimney, and the humidifier section is used for air wetting；
The blower-use will be in will combine the air delivery in wind cabinet system to factory floor；The middle effect strainer for filtering air in
Impurity；The combination wind cabinet system further includes：Fresh wind tube, backwind tube and ajutage；The fresh wind tube with it is described from
Water heat-exchange system is connected to, for the air delivery after tap water heat-exchange system once cools down to the primary filter screen；It is described
Backwind tube is used for the air delivery of factory floor to the primary filter screen；The ajutage is used for the combination wind cabinet system
Air delivery after reducing temperature twice is to factory floor；Fresh air tube valve is provided in the fresh wind tube；The cold water section and heating
Only there are one in running order in the same time for section.
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| WO2020114668A1 (en) * | 2018-12-05 | 2020-06-11 | Belimo Holding Ag | Device and method for controlling an orifice of a valve in an hvac system |
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| CN114909778A (en) * | 2022-06-01 | 2022-08-16 | 福建永荣锦江股份有限公司 | Enthalpy value controlled energy-saving central air conditioning method |
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