CN106765955B - Water supply variable temperature control system based on end comfort level - Google Patents
Water supply variable temperature control system based on end comfort level Download PDFInfo
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- CN106765955B CN106765955B CN201611209320.3A CN201611209320A CN106765955B CN 106765955 B CN106765955 B CN 106765955B CN 201611209320 A CN201611209320 A CN 201611209320A CN 106765955 B CN106765955 B CN 106765955B
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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
-
- 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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- 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
-
- 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
-
- 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
- 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
- Signal Processing (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of water supply variable temperature control system based on end comfort level, it is related to air-conditioning technical field, for solving, for the problem that being met using traditional regional temperature control system containing the big system of multizone air-conditioning, all areas are extremely difficult in requirement of all periods to comfort level or there are energy wastes.The water supply variable temperature control system includes: rate of load condensate calculator, water outlet temperature setting device, overtemperature room ratio calculation device, overtemperature room ratio controller, multiple temperature control systems, gain characteristics average calculator, gain controller, leaving water temperature calculator and generator set controller.Water supply variable temperature control system provided by the invention is used for central air-conditioning.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to a kind of water supply variable temperature control systems based on end comfort level
System.
Background technique
Existing air-conditioner temperature control system can adjust room temperature, such as wind blower coil tube temperature controller by variation wind-speed gear
Control of product mode is mostly according to room actual temperature and room set temperature deviation adjusting wind speed, and small temperature deviation is using low
Fast wind file, middle temperature deviation use middling speed windscreen, and high-temperature deviation uses high speed windscreen.
There are also wind speed or water supply continuously adjustable types for existing air-conditioning temperature control system, can continuously be adjusted according to regional temperature
The control of rotation speed of fan or water supply realization to temperature is saved, pid control algorithm is generallyd use.
When Air-conditioner design type selecting, HVAC construction rationally, weather is normal, in the case where region or room normal use, air-conditioning
Temperature control system can satisfy requirement of the personnel to comfort level；However, this is all Utopian imagination, property is often thrown
Tell often because when individual rooms are gathered because losing hydraulic equilibrium or special occasions such as temporary staff, weather cataclysm, comfortably
Degree does not reach requirement.
Improving for energy consumption system efficiency is usually to be realized by quenched, tune amount, and the prior art is generally according to poor for return water
Pressure, supply backwater temperature difference adjust water supply flow or according to load adjustment water supply unit leaving water temperatures.Since there are serious stagnant for process
Afterwards, the information such as subregion room terminal temperature, temperature control system operating status are not fully used and existing air-conditioning temperature
The intrinsic defects such as control system intelligence is weaker are spent, it is further perfect not enough for energy control function, it is easy
It causes excessively to energize and is either difficult to meet the problem of comfort level requires.
Summary of the invention
The water supply variable temperature control system based on end comfort level that the purpose of the present invention is to provide a kind of, for solving needle
To the big system of multizone air-conditioning is contained, all areas are met in all periods to comfortable using traditional regional temperature control system
The requirement of degree is extremely difficult to or there are problems that energy waste.
To achieve the goals above, water supply variable temperature control system provided by the present invention is applied to air-conditioning, comprising:
Rate of load condensate calculator, supply water temperature, return water temperature and water supply flow respectively as rate of load condensate calculator input,
The rate of load condensate calculator is according to supply water temperature, return water temperature and water supply flow, heat load calculation, then calculate the thermic load with
System designs the ratio of peak load, obtains output of the rate of load condensate as the rate of load condensate calculator；
Water outlet temperature setting device, input of the output of the rate of load condensate calculator as the water outlet temperature setting device, should go out
The defeated of the water outlet temperature setting device is calculated according to the rate of load condensate, according to linearly or nonlinearly relationship in coolant-temperature gage setting apparatus
Out；
Overtemperature room ratio calculation device, room actual temperature, room set temperature and the temperature in each room in subregion
Input of the control system operating status respectively as the overtemperature room ratio calculation device；The overtemperature area rooms ratio calculation device is used
In reaching the temperature in preset threshold value and the room in the room actual temperature in the room and the difference of room set temperature
In the case that control system is in operating status, which is defined as overtemperature room, calculates the sum in overtemperature room in subregion
The ratio of the room sum in operating status with temperature control system, as overtemperature room ratio；The overtemperature room ratio is made
For the output of overtemperature room ratio calculation device；
Overtemperature room ratio controller, the output of the overtemperature room ratio calculation device is as overtemperature room ratio controller
Input, and the measured value as overtemperature room ratio controller, overtemperature room ratio controller calculated using PID control
Method；
Multiple temperature control systems, each temperature control system are separately positioned in different rooms, for according to corresponding room
Between room actual temperature and preset room set temperature, realize control to room temperature；
The gain characteristics value of gain characteristics average calculator, each temperature control system is averagely counted as the gain characteristics
The input of device is calculated, calculates the average value of all gain characteristics values as gain characteristics average value, the gain characteristics average value
Output as the gain characteristics average calculator；
Gain controller, setting value of the output of overtemperature room ratio controller as the gain controller are described
Measured value of the gain characteristics average value as the gain controller, the gain controller use pid control algorithm；
Leaving water temperature calculator, the gain controller output and the water outlet temperature setting device output respectively as
The input 1 and input 2 of the leaving water temperature calculator, which is weighted summation to the input 1 and the input 2
It calculates, obtains output of the water outlet temperature setting value as the leaving water temperature calculator；And
Generator set controller, setting value of the output of the leaving water temperature calculator as the generator set controller, the unit control
Device processed adjusts leaving water temperature according to the water outlet temperature setting value.
The water supply variable temperature control system based on end comfort level provided according to the present invention can be realized following technology effect
Fruit.
The height of unit supply water temperature has apparent influence to unit efficiency, and by taking water cooler as an example, supply water temperature is higher,
Unit efficiency is higher, it is on the contrary then conversely, but excessively high supply water temperature may can not meet the requirement of comfort level in high load capacity.This
The water supply variable temperature control system provided is invented on the basis of according to load adjustment leaving water temperature, introduces the ratio control of overtemperature room
Device processed is modified unit supply water temperature setting value, compensates for traditional technology and does not account for lacking existing for air conditioning terminal information
It falls into；
The purpose of overtemperature room ratio controller is to control the number in overtemperature room in a reasonable range, prevent because
Individual rooms are because of the excessive energy supply caused by there is serious waterpower imbalance or load cataclysm, and the present invention is based on variable gain air-conditionings
Temperature control system can control the gain characteristics value of the temperature control system in each room of central air-conditioning in a zone of reasonableness
It is interior, it can be avoided the unreasonable of supply water temperature；Meanwhile variable gain air-conditioner temperature control system can be according to the load in this room
Variation, this unbalanced operating condition of circuit waterpower actively carry out the adjustment of heat exchange rate, optimize the mode with energy.The thus present invention
The target for energy global optimization is reached, scheme not only can guarantee the requirement of each room comfort level, but also can unit be supplied water
Temperature tends to rationally, can obtain apparent energy-saving effect under the premise of guaranteeing comfort level.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of central air conditioner system provided by the present invention.
Fig. 2 is the structural block diagram of water supply variable temperature control system provided by the present invention.
Fig. 3 is the structural block diagram of temperature controller provided by the embodiment of the present invention 1.
Fig. 4 is the structural block diagram of temperature controller provided by the embodiment of the present invention 2.
Fig. 5 is the calculation flow chart of gain characteristics value in embodiment 1 and embodiment 2.
Specific embodiment
Below in conjunction with Figure of description, the technical solution in the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only the utility model a part of the embodiment, instead of all the embodiments.Based on the reality in the present invention
Apply example, those skilled in the art's every other embodiment obtained without making creative work belongs to this
Invent novel protected range.
[embodiment 1]
As shown in Figure 1, the present embodiment provides a kind of water supply variable temperature control system based on end comfort level, can be used for
Entreat air-conditioning system.(i.e. branch's cooling supply region, there are m in Fig. 1 with multiple subregions are distributed in by water cooler for central air conditioner system
A subregion) multiple air-conditionings composition, each subregion covers multiple rooms or multiple subregions (such as in megastore, factory etc.
A biggish subregion in include multiple subregions), be equipped at least one air-conditioning in each room or each subregion, with
It in lower explanation, is illustrated by taking room as an example, according to the difference of practical application scene, it is possible to use subregion replaces this implementation
Room in example.Cold water is exported to each air-conditioning using water cooler, the water outlet of water cooler is controlled by total variable frequency pump P101
Amount, and then cooling capacity is provided to each subregion.
By taking subregion 1 as an example, be equipped with there are n room in subregion 1, in each room an air-conditioning (air-conditioning 1 i.e. in figure~
Air-conditioning n), by the water supply flow of 201 control partition 1 of variable frequency pump, the supply water temperature of subregion 1 is T1, return water temperature T2.Together
Reason, there are n rooms in subregion m, and each room is equipped with an air-conditioning, by the control partition variable frequency pump P202 2 for water flow
Amount.
As shown in Fig. 2, in the present embodiment, water supply variable temperature control system includes: rate of load condensate calculator J, leaving water temperature
Setting apparatus K, overtemperature room ratio calculation device F, overtemperature room ratio controller G, gain characteristics average calculator I, gain control
Device H, leaving water temperature calculator M, generator set controller R and multiple temperature control systems (not shown).
About above-mentioned rate of load condensate calculator J, supply water temperature T1, return water temperature T2 and water supply flow F are as rate of load condensate meter
The input for calculating device J, according to supply water temperature T1, return water temperature T2 and water supply flow F heat load calculation Q.Specifically, Q=C × F
× (T2-T1), wherein C is the specific heat capacity of water.
Then, the ratio of heat load calculation Q and the peak load Qd of system design, obtains rate of load condensate k, as rate of load condensate meter
Calculate the output of device J.Specifically, k=Q/Qd, wherein the physical quantitys such as water supply flow F, supply water temperature T1, return water temperature T2 can be used
Corresponding measure and control instrument is measured, and the present embodiment does not limit the method for measuring these physical quantitys specifically.In addition, system
It the peak load of design and is determined by factors such as the subassembly selection of central air-conditioning and scales.
About water outlet temperature setting device K, (i.e. rate of load condensate k) is used as the water outlet temperature setting for the output of rate of load condensate calculator J
The input of device K, the water outlet temperature setting device K calculate first according to linearly or nonlinearly relationship and go out using rate of load condensate k as independent variable
The output of coolant-temperature gage setting value Tsp1, the first water outlet temperature setting value Tsp1 as leaving water temperature calculator K.
Such as cold season, when rate of load condensate k changes in 30%~100% range, the first water outlet temperature setting value Tsp1
Change at 12 DEG C~7 DEG C；When rate of load condensate k is lower than 30%, the first water outlet temperature setting value Tsp1 is 12 DEG C；Rate of load condensate k is higher than
When 100%, the first water outlet temperature setting value Tsp1 is 7 DEG C.In the present embodiment, it is set as rate of load condensate k and the first leaving water temperature
A kind of optional physical relationship of definite value Tsp1: as 30%≤k≤100%, Tsp1=(99-50 × k)/7；As k < 30%
When, Tsp1=12 DEG C；As k > 100%, Tsp1=7 DEG C.
About above-mentioned overtemperature room ratio calculation device F, if the room actual temperature in i-th of room is Ti, room in subregion
Set temperature is Tisp, and the operating status of temperature control system is Ri.Then the room actual temperature Ti in each room in subregion,
Room set temperature Tisp and temperature control system operating status Ri respectively as overtemperature room ratio calculation device F input,
The difference of the room actual temperature Ti and room set temperature Tisp in i-th of room reach preset threshold value and temperature control system
Operating status Ri be currently running in the case where, which is denoted as overtemperature room, and then calculate the overtemperature room in the subregion
Between sum and the ratio of temperature control system room sum in operating status, which is known as overtemperature room ratio,
Output of the overtemperature room ratio as overtemperature room ratio calculation device F.
About above-mentioned overtemperature room ratio controller G, the output YF of overtemperature room ratio calculation device F is as overtemperature room ratio
The input of rate controller G, and the measured value as overtemperature room ratio controller G；The setting value of overtemperature room ratio controller G
Value range be 0%~5%.Overtemperature room ratio controller G uses pid control algorithm or other control algolithms.
About above-mentioned multiple temperature control systems, in applying building of the central air conditioner system etc., each room is at least
One temperature control system is installed, which may be provided in corresponding air-conditioning, control system by the temperature
System controls the temperature in corresponding room.As shown in Figure 3 or Figure 4, each temperature control system includes self-tuning gain device E, can
According to the room actual temperature T and preset room set temperature Tsp in corresponding room, corresponding gain characteristics value n is generated.
Gain characteristics average calculator I is connect with each temperature control system, and the gain characteristics value of each temperature control system is made
For the input of gain characteristics average calculator I, for example, in the present embodiment, p temperature control is equipped in each subregion is
System, then the temperature profile value obtained from each temperature control system is respectively n1, n2 ... np, which uses
In the gain characteristics value n exported according to each temperature control system, generates gain characteristics average value and averagely counted as the gain characteristics
Calculate the output of device I.
About above-mentioned gain controller H, output YG the setting as gain controller G of overtemperature room ratio controller G
Definite value, measured value of the output YI of gain characteristics average calculator I as gain controller G, gain controller G generate the
Two water outlet temperature setting value Tsp2, as the output YG of gain controller G, gain controller H using pid control algorithm or its
His algorithm.
About above-mentioned leaving water temperature calculator M, output (i.e. the first water outlet temperature setting value of water outlet temperature setting device K
Tsp1) the input 1 as leaving water temperature calculator M, output YH (i.e. the second water outlet temperature setting value of gain controller H
Tsp2) and as leaving water temperature calculator K input 2, leaving water temperature calculator M is weighted the input 1 and the input 2
Read group total obtains output YM of the water outlet temperature setting value Tsp as the leaving water temperature calculator.
In the present embodiment, a kind of circular as water outlet temperature setting value Tsp: Tsp=1 × Tsp1+ of μ μ 2
× Tsp2, wherein μ 1 and μ 2 can be by those skilled in the art determine according to actual needs, in the present embodiment, preferably μ 1=
0.8, μ 2=0.2.
About above-mentioned generator set controller R, output YM (i.e. water outlet temperature setting value Tsp) conduct of leaving water temperature calculator M
The setting value of generator set controller R, generator set controller R are used to adjust leaving water temperature according to above-mentioned water outlet temperature setting value.
As shown in figure 3, above-mentioned temperature control system includes: multiple temperature controllers, selector D and self-tuning gain
Device E includes in the following description the first temperature controller A, second temperature controller B and third temperature with temperature control system
It is illustrated for degree controller C.
In multiple temperature controllers, measured value of the room actual temperature T as each temperature controller, preset room is set
Determine setting value of the temperature Tsp as each temperature controller, each temperature controller sets temperature according to room actual temperature T and room
It spends Tsp and generates wind-speed gear signal, the output as the temperature controller.Illustrate in for cold season below, above three temperature
The specific control law of controller.
The output YA of first temperature controller A is generated according to following control law: according to room actual temperature T and preset room
Between set temperature Tsp calculate temperature deviation value, preset first temperature deviation value and be less than when the temperature deviation value is more than or equal to
When preset second temperature deviation (i.e. temperature deviation value is the small temperature difference), the first wind-speed gear signal is generated, temperature deviation is worked as
Value is more than or equal to the preset second temperature deviation and (i.e. temperature deviation value is medium temperature less than preset third temperature deviation value
Difference) when and be less than preset third temperature deviation value, generate the second wind-speed gear signal, this is pre- when temperature deviation value is more than or equal to
If third temperature deviation value (i.e. temperature deviation value be high temperature difference) when, generate third wind-speed gear signal；
It is understood that above-mentioned first temperature deviation value, second temperature deviation and third temperature deviation value can be by these
Field technical staff rule of thumb sets, and in the present embodiment, preferably the first temperature deviation value is 1 DEG C, second temperature is inclined
Difference is 2 DEG C, third temperature deviation value is 3 DEG C.
The output YB of second temperature controller B is generated according to following control law: according to room actual temperature T and preset room
Between set temperature Tsp calculate temperature deviation value, when temperature deviation value be more than or equal to above-mentioned first temperature deviation value and be less than it is above-mentioned
When second temperature deviation, the second wind-speed gear signal is generated, when temperature deviation value is more than or equal to above-mentioned second temperature deviation
When, generate third wind-speed gear signal；And
The output YC of third temperature controller C is generated according to following control law: according to room actual temperature T and preset room
Between set temperature Tsp calculate temperature deviation value, when temperature deviation value be more than or equal to above-mentioned first temperature deviation value when, generate third
Wind-speed gear signal,
Wherein, the corresponding wind speed of the first wind-speed gear signal wind speed corresponding less than the second wind-speed gear signal, the second wind
The corresponding wind speed of fast gear signal is less than the corresponding wind speed of third wind-speed gear signal.
Above-mentioned self-tuning gain device E is used to generate and increase according to room actual temperature T and preset room set temperature Tsp
Beneficial characteristic value n.Specifically, gain characteristics value n is bigger, represents room actual temperature T and got over room set temperature Tsp difference
Greatly, or by room actual temperature T it is bigger to adjust the difficulty to room set temperature Tsp.Specifically, as shown in figure 5, gain is from whole
Device E is determined for realizing following calculation process.
Step S1 initializes gain characteristics value n=1；
Step S2, if the room actual temperature T is greater than the room set temperature Tsp and preset first bias a1
The sum of, n+1 is assigned to n and goes to step S4, otherwise goes to step S3；In the present embodiment, which takes
Being worth range is 1.5 DEG C~2 DEG C；
Step S3, if the room actual temperature T is less than the room set temperature Tsp and preset second bias a2
Difference, n-1 is assigned to n and goes to step S4, otherwise goes to step S2；In the present embodiment, which takes
Being worth range is 0.3 DEG C~0.5 DEG C；
Lower limit value b1 is assigned to n and goes to step S6 by step S4 when the n is less than preset lower limit value b1, no
Then go to step S5；In the present embodiment, lower limit value b1 is 1；
Upper limit value b2 is assigned to n and goes to step S6 by step S5 when the n is greater than preset upper limit value b2, no
Then go to step S6；In the present embodiment, upper limit value b2 is 3.
Step S6, output gain characteristic value n, timer reset and start timing, go to step S7；
Step S7 waits when timing time t is not up to preset time t sp, otherwise goes to step S8；
Step S8 terminates.
According to above content it is found that when room actual temperature T differs larger with room set temperature Tsp, gain is from whole
The n value for determining device E output is larger, also, when room actual temperature T can not be adjusted to room set temperature Tsp for a long time, gain
The gain characteristics value n that Self-tuning System device E is exported will be further increased.Therefore, gain characteristics value n is bigger, room actual temperature T
It is bigger with room set temperature Tsp difference, or that room actual temperature T adjusted the difficulty to room set temperature Tsp is bigger.
About above-mentioned selector D, output (i.e. gain characteristics value n) and each temperature controller of self-tuning gain device
Output (i.e. each wind-speed gear signal) respectively as the input of selector D, selector D is used for according to the gain characteristics
Value n selects a wind-speed gear signal as selector D's from the wind-speed gear signal that each temperature controller exports
Output, is blown with controlling blower with the corresponding wind speed of wind-speed gear signal.
In the present embodiment, selector E is specifically used for:
When gain characteristics value is 1, the first temperature controller A is selected, controls blower with the output of the first temperature controller A
The corresponding wind speed of YA is blown；
When gain characteristics value is 2, second temperature controller B is selected, controls blower with the output of second temperature controller B
The corresponding wind speed of YB is blown；
When gain characteristics value is 3, third temperature controller C is selected, controls blower with the output of third temperature controller C
The corresponding wind speed of YC is blown.
It follows that when gain characteristics value n is bigger, corresponding identical room actual temperature T and room set temperature Tsp
Deviation, wind speed corresponding to the output of the selected temperature controller of selector D is bigger, thus room actual temperature T and
Room set temperature Tsp difference it is bigger or by room actual temperature T adjust the difficulty to room set temperature Tsp it is higher when, wind
The air supply velocity of machine is bigger, and thus, it is possible to adjust room actual temperature T in time and intelligently.
The water supply variable temperature control system based on end comfort level provided according to embodiments of the present invention can be realized as follows
Technical effect.
The height of unit supply water temperature has apparent influence to unit efficiency, and by taking water cooler as an example, supply water temperature is higher,
Unit efficiency is higher, it is on the contrary then conversely, but excessively high supply water temperature may can not meet the requirement of comfort level in high load capacity.This
The water supply variable temperature control system provided is invented on the basis of according to load adjustment leaving water temperature, introduces the ratio control of overtemperature room
Device processed is modified unit supply water temperature setting value, compensates for traditional technology and does not account for lacking existing for air conditioning terminal information
It falls into；
The purpose of overtemperature room ratio controller is to control the number in overtemperature room in a reasonable range, prevent because
Individual rooms are because of the excessive energy supply caused by there is serious waterpower imbalance or load cataclysm, and the present invention is based on variable gain air-conditionings
Temperature control system can control the gain characteristics value of the temperature control system in each room of central air-conditioning in a zone of reasonableness
It is interior, it can be avoided the unreasonable of supply water temperature；Meanwhile variable gain air-conditioner temperature control system can be according to the load in this room
Variation, this unbalanced operating condition of circuit waterpower actively carry out the adjustment of heat exchange rate, optimize the mode with energy.The thus present invention
The target for energy global optimization is reached, scheme not only can guarantee the requirement of each room comfort level, but also can unit be supplied water
Temperature tends to rationally, can obtain apparent energy-saving effect under the premise of guaranteeing comfort level.
[embodiment 2]
It present embodiments provides one kind and is based on end comfortably water supply variable temperature control system, in the present embodiment, for
Part in the same manner as in Example 1 adds identical appended drawing reference and the description thereof will be omitted.
As shown in Fig. 2, in the present embodiment, water supply variable temperature control system includes that water supply variable temperature control system includes:
Rate of load condensate calculator J, water outlet temperature setting device K, overtemperature room ratio calculation device F, overtemperature room ratio controller G, gain are special
Levy average calculator I, gain controller H, leaving water temperature calculator M, generator set controller R and multiple temperature control systems (not
Diagram).
As shown in figure 4, the present embodiment the difference from embodiment 1 is that, the temperature control system in the present embodiment include: increase
Beneficial Self-tuning System device E, gain calculator O and temperature controller P.
About above-mentioned self-tuning gain device E, room actual temperature T and preset room set temperature Tsp are respectively as this
The input of self-tuning gain device E generates gain characteristics value n according to room actual temperature T and preset room set temperature Tsp,
Output as self-tuning gain device E.Specifically, gain characteristics value n is bigger, room actual temperature T and room are represented
Set temperature Tsp difference is bigger, or that room actual temperature T adjusted the difficulty to room set temperature Tsp is bigger.Specifically,
As shown in figure 5, self-tuning gain device E is for realizing following calculation process.
Step S1 initializes gain characteristics value n=1；
Step S2, if the room actual temperature T is greater than the room set temperature Tsp and preset first bias a1
The sum of, n+1 is assigned to n and goes to step S4, otherwise goes to step S3；In the present embodiment, which takes
Being worth range is 1.5 DEG C~2 DEG C；
Step S3, if the room actual temperature T is less than the room set temperature Tsp and preset second bias a2
Difference, n-1 is assigned to n and goes to step S4, otherwise goes to step S2；In the present embodiment, which takes
Being worth range is 0.3 DEG C~0.5 DEG C；
Lower limit value b1 is assigned to n and goes to step S6 by step S4 when the n is less than preset lower limit value b1, no
Then go to step S5；In the present embodiment, lower limit value b1 is 1；
Upper limit value b2 is assigned to n and goes to step S6 by step S5 when the n is greater than preset upper limit value b2, no
Then go to step S6；In the present embodiment, upper limit value b2 is 3.
Step S6, output gain characteristic value n, timer reset and start timing, go to step S7；
Step S7 waits when timing time t is not up to preset time t sp, otherwise goes to step S8；
Step S8 terminates.
According to above content it is found that when room actual temperature T differs larger with room set temperature Tsp, gain is from whole
The gain characteristics value n for determining device E output is larger, also, can not be adjusted to room set temperature for a long time in room actual temperature T
When Tsp, the gain characteristics value n that self-tuning gain device E is exported will be further increased.Therefore, gain characteristics value n is bigger, generation
Table room actual temperature T and room set temperature Tsp difference are bigger, or room actual temperature T is adjusted to room set temperature
The difficulty of Tsp is bigger.
Gain calculator O is used to generate gain KP according to above-mentioned gain characteristics value n, specifically:
When gain characteristics value n is 1, enabling gain KP is kp；
When gain characteristics value n is 2, enabling gain KP is a × kp；
When gain characteristics value n is 3, enabling gain KP is b × kp, wherein 1 < a <b, in the present embodiment, a value is
1.2, b values are 1.5.Gain KP can carry out value according to the application scenarios difference of the temperature control system of the application.
Temperature controller P, the output of room actual temperature T, the room set temperature Tsp and the gain calculator
(i.e. gain KP) respectively as the input of temperature controller P, temperature controller P is for according to room actual temperature T, room
The set temperature Tsp and gain KP generates blast velocity control signal, so that blower is with the corresponding wind speed of blast velocity control signal
It blows；Temperature controller P uses PID or PI control algolithm.
The water supply variable temperature control system based on end comfort level provided according to embodiments of the present invention can be realized as follows
Technical effect.
The height of unit supply water temperature has apparent influence to unit efficiency, and by taking water cooler as an example, supply water temperature is higher,
Unit efficiency is higher, it is on the contrary then conversely, but excessively high supply water temperature may can not meet the requirement of comfort level in high load capacity.This
The water supply variable temperature control system provided is invented on the basis of according to load adjustment leaving water temperature, introduces the ratio control of overtemperature room
Device processed is modified unit supply water temperature setting value, compensates for traditional technology and does not account for lacking existing for air conditioning terminal information
It falls into；
The purpose of overtemperature room ratio controller is to control the number in overtemperature room in a reasonable range, prevent because
Individual rooms are because of the excessive energy supply caused by there is serious waterpower imbalance or load cataclysm, and the present invention is based on variable gain air-conditionings
Temperature control system can control the gain characteristics value of the temperature control system in each room of central air-conditioning in a zone of reasonableness
It is interior, it can be avoided the unreasonable of supply water temperature；Meanwhile variable gain air-conditioner temperature control system can be according to the load in this room
Variation, this unbalanced operating condition of circuit waterpower actively carry out the adjustment of heat exchange rate, optimize the mode with energy.The thus present invention
The target for energy global optimization is reached, scheme not only can guarantee the requirement of each room comfort level, but also can unit be supplied water
Temperature tends to rationally, can obtain apparent energy-saving effect under the premise of guaranteeing comfort level.
In the description of above embodiment, particular features, structures, materials, or characteristics can be at any one or more
It can be combined in any suitable manner in a embodiment or example.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (6)
1. a kind of water supply variable temperature control system based on end comfort level is applied to air-conditioning characterized by comprising
Rate of load condensate calculator, respectively as the input of rate of load condensate calculator, this is negative for supply water temperature, return water temperature and water supply flow
Lotus rate calculator then calculates the thermic load and system according to supply water temperature, return water temperature and water supply flow, heat load calculation
The ratio for designing peak load, obtains output of the rate of load condensate as the rate of load condensate calculator；
Water outlet temperature setting device, input of the output of the rate of load condensate calculator as the water outlet temperature setting device, should go out water temperature
Setting apparatus is spent according to the rate of load condensate, and the output of the water outlet temperature setting device is calculated according to linearly or nonlinearly relationship；
Overtemperature room ratio calculation device, room actual temperature, room set temperature and the temperature control in each room in subregion
Input of the system running state respectively as the overtemperature room ratio calculation device；The overtemperature area rooms ratio calculation device is used for,
Reach the temperature control in preset threshold value and the room in the room actual temperature in the room and the difference of room set temperature
In the case that system processed is in operating status, which is defined as overtemperature room, calculate in subregion the sum in overtemperature room with
The ratio of temperature control system room sum in operating status, as overtemperature room ratio；The overtemperature room ratio conduct
The output of overtemperature room ratio calculation device；
Overtemperature room ratio controller, the output of the overtemperature room ratio calculation device is as the defeated of overtemperature room ratio controller
Enter, and the measured value as overtemperature room ratio controller, overtemperature room ratio controller uses pid control algorithm；
Multiple temperature control systems, each temperature control system are separately positioned in different rooms, for according to corresponding room
Room actual temperature and preset room set temperature realize the control to room temperature；
Gain characteristics average calculator, the gain characteristics value of each temperature control system is as the gain characteristics average calculator
Input, calculate the average value of all gain characteristics values as gain characteristics average value, the gain characteristics average value conduct
The output of the gain characteristics average calculator；
Gain controller, setting value of the output of overtemperature room ratio controller as the gain controller, the gain
Measured value of the feature average value as the gain controller, the gain controller use pid control algorithm；
Leaving water temperature calculator, the output of the gain controller and the output of the water outlet temperature setting device go out respectively as this
The input 1 and input 2 of coolant-temperature gage calculator, the leaving water temperature calculator are weighted summation meter to the input 1 and the input 2
It calculates, obtains output of the water outlet temperature setting value as the leaving water temperature calculator；And
Generator set controller, setting value of the output of the leaving water temperature calculator as the generator set controller, the generator set controller
Leaving water temperature is adjusted according to the water outlet temperature setting value.
2. water supply variable temperature control system according to claim 1, which is characterized in that each temperature control system packet
It includes:
Self-tuning gain device, room actual temperature and preset room set temperature are respectively as the defeated of the self-tuning gain device
Enter, gain characteristics value is generated according to room actual temperature and preset room set temperature, as the defeated of the self-tuning gain device
Out；
Multiple temperature controllers, measured value of the room actual temperature as each temperature controller, preset room setting temperature
The setting value as each temperature controller is spent, each temperature controller sets temperature according to room actual temperature and room
Degree generates wind-speed gear signal, the output as the temperature controller；And
Selector, the output of the self-tuning gain device and the output of each temperature controller are respectively as the selector
Input, the selector are used to be selected from the wind-speed gear signal that each temperature controller exports according to the gain characteristics value
Output of the wind-speed gear signal as the selector is selected, is carried out with controlling blower with the corresponding wind speed of the wind-speed gear signal
Air-supply.
3. water supply variable temperature control system according to claim 2, which is characterized in that for cold season, the gain is from whole
Device is determined for realizing following steps:
Step S1 initializes gain characteristics value n=1；
Step S2, if the room actual temperature is greater than the sum of the room set temperature and preset first bias, by n+1
It is assigned to n and goes to step S4, otherwise go to step S3；
Step S3, if the room actual temperature is less than the difference of the room set temperature and preset second bias, by n-1
It is assigned to n and goes to step S4, otherwise go to step S2；
The lower limit value is assigned to n and goes to step S6, otherwise go to step by step S4 when the n is less than preset lower limit value
Rapid S5；
The upper limit value is assigned to n and goes to step S6, otherwise go to step by step S5 when the n is greater than preset upper limit value
Rapid S6；
Step S6, output gain characteristic value n, timer reset and start timing, go to step S7；
Step S7 waits when timing time is not up to preset time, otherwise goes to step S8；
Step S8 terminates.
4. water supply variable temperature control system according to claim 3, which is characterized in that for cold season, the multiple temperature
Controller includes:
First temperature controller calculates temperature deviation value according to room actual temperature and preset room set temperature, works as institute
Temperature deviation value is stated more than or equal to preset first temperature deviation value and when being less than preset second temperature deviation, generates first
Wind-speed gear signal, when the temperature deviation value is more than or equal to preset second temperature deviation and is less than preset third temperature
When deviation, the second wind-speed gear signal is generated, when the temperature deviation value is more than or equal to preset third temperature deviation value,
Generate third wind-speed gear signal；
Second temperature controller calculates temperature deviation value according to room actual temperature and preset room set temperature, works as institute
Temperature deviation value is stated more than or equal to the first temperature deviation value and when being less than the second temperature deviation, generates the second wind speed
Gear signal generates third wind-speed gear signal when the temperature deviation value is more than or equal to the second temperature deviation；With
And
Third temperature controller calculates temperature deviation value according to room actual temperature and preset room set temperature, works as institute
When stating temperature deviation value more than or equal to the first temperature deviation value, third wind-speed gear signal is generated,
Wherein, the corresponding wind speed of the first wind-speed gear signal wind speed corresponding less than the second wind-speed gear signal, the second wind speed shelves
Signal corresponding wind speed in position is less than the corresponding wind speed of third wind-speed gear signal,
The selector is used for:
When the gain characteristics value is 1, the wind-speed gear signal of the first temperature controller output is selected, and controls blower
It is blown with the corresponding wind speed of wind-speed gear signal；
When the gain characteristics value is 2, the wind-speed gear signal of the second temperature controller output is selected, and controls blower
It is blown with the corresponding wind speed of wind-speed gear signal；
When the gain characteristics value is 3, the wind-speed gear signal of the third temperature controller output is selected, and controls blower
It is blown with the corresponding wind speed of wind-speed gear signal.
5. water supply variable temperature control system according to claim 1, which is characterized in that each temperature control system packet
It includes:
Self-tuning gain device, room actual temperature and preset room set temperature are respectively as the defeated of the self-tuning gain device
Enter, gain characteristics value is generated according to room actual temperature and preset room set temperature, as the defeated of the self-tuning gain device
Out；
Gain calculator, input of the gain characteristics value as the gain calculator generate gain according to the gain characteristics value,
Output as the gain calculator；And
Temperature controller, the output difference of the room actual temperature, the room set temperature and the gain calculator
As the input of the temperature controller, which is used for according to room actual temperature, room set temperature and described
Gain generating blast velocity control signal, so that blower is blown with the corresponding wind speed of blast velocity control signal；The temperature controller
Using PID or PI control algolithm.
6. water supply variable temperature control system according to claim 5, which is characterized in that for cold season, the gain is from whole
Device is determined for realizing following steps:
Step S1 initializes gain characteristics value n=1；
Step S2, if the room actual temperature is greater than the sum of the room set temperature and preset first bias, by n+1
It is assigned to n and goes to step S4, otherwise go to step S3；
Step S3, if the room actual temperature is less than the difference of the room set temperature and preset second bias, by n-1
It is assigned to n and goes to step S4, otherwise go to step S2；
The lower limit value is assigned to n and goes to step S6, otherwise go to step by step S4 when the n is less than preset lower limit value
Rapid S5；
The upper limit value is assigned to n and goes to step S6, otherwise go to step by step S5 when the n is greater than preset upper limit value
Rapid S6；
Step S6, output gain characteristic value n, timer reset and start timing, go to step S7；
Step S7 waits when timing time is not up to preset time, otherwise goes to step S8；Step S8 terminates,
The gain calculator is specifically used for:
When the gain characteristics value is 1, enabling the gain is kp；
When the gain characteristics value is 2, enabling the gain is a × kp；
When the gain characteristics value is 3, enabling the gain is b × kp, wherein 1 < a <b.
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| CN109945443A (en) * | 2019-04-28 | 2019-06-28 | 郑州春泉节能股份有限公司 | Concentrate the energy-saving control method and system of energy supply |
| CN113865015A (en) * | 2021-09-22 | 2021-12-31 | 武汉奇人制冷技术有限公司 | AI intelligent control method and system for large-scale central air conditioner |
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