CN106839266B - The water supply variable temperature control system fed back based on air-conditioning load rate and comfort level - Google Patents
The water supply variable temperature control system fed back based on air-conditioning load rate and comfort level Download PDFInfo
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- CN106839266B CN106839266B CN201611208349.XA CN201611208349A CN106839266B CN 106839266 B CN106839266 B CN 106839266B CN 201611208349 A CN201611208349 A CN 201611208349A CN 106839266 B CN106839266 B CN 106839266B
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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
- 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
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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
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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
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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
- 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Air Conditioning Control Device (AREA)
Abstract
The present invention discloses a kind of water supply variable temperature control system fed back based on air-conditioning load rate and comfort level, it is related to air-conditioning technical field, for rationally controlling unit supply water temperature, solve the problems, such as to be difficult to meet economy or the comfort level requirement with energy using traditional control system.The water supply variable temperature control system includes: environment temperature rate of load condensate calculator, ambient humidity rate of load condensate calculator, outer rate of load condensate calculator, internal loading rate calculator, overtemperature room ratio calculation device, overtemperature room ratio controller, water outlet temperature setting device, generator set controller, power actuators and related measure and control instrument.The water supply variable temperature control system provided by the invention fed back based on air-conditioning load rate and comfort level is used for central air conditioner system.
Description
Technical field
The present invention relates to air-conditioning technical field more particularly to a kind of water supply changes fed back based on air-conditioning load rate and comfort level
Temperature control system.
Background technique
Heat pump unit supply water temperature and system energy efficiency have direct relationship in the big system of air-conditioning, for cold season, supply water
Temperature is higher, and unit efficiency is higher, and specific refrigerating effect energy consumption is lower, and when generally load is high, supply water temperature is lower, and load is low
When, supply water temperature is high, both can guarantee the efficiency of unit, and also can guarantee the needs of load, and had met the requirement of comfort level.
The prior art adjusts supply water temperature generally according to air-conditioning system real-time load or environment temperature, and there are many defects.
For example air-conditioning system real-time load obtained by calculation can not really reflect energy requirement actually required in fact, only generation
Table certain energy supply and with energy mode under actual consumption energy；Environment temperature can partially characterize the energy of air-conditioning system indirectly
Amount demand, but it is also not comprehensive enough.
Summary of the invention
The purpose of the present invention is to provide a kind of water supply variable temperature control systems fed back based on air-conditioning load rate and comfort level
System solves to be difficult to meet the economy with energy using traditional control system for rationally controlling unit supply water temperature
Or the problem of comfort level requirement.
To achieve the goals above, the water supply temperature control provided by the invention fed back based on air-conditioning load rate and comfort level
System processed includes:
Environment temperature rate of load condensate calculator is surveyed input of the environment temperature as the environment temperature rate of load condensate calculator, is pressed
Environment temperature rate of load condensate is calculated according to linearly or nonlinearly relationship, the output as the environment temperature rate of load condensate calculator；
Ambient humidity rate of load condensate calculator is surveyed input of the ambient humidity as the ambient humidity rate of load condensate calculator, is pressed
Ambient humidity rate of load condensate is calculated according to linearly or nonlinearly relationship, the output as the ambient humidity rate of load condensate calculator；
Outer rate of load condensate calculator, the output of the environment temperature rate of load condensate calculator and the ambient humidity rate of load condensate calculate
The output of device is weighted summation to the input 1 and the input 2 respectively as the input 1 and input 2 of the outer rate of load condensate calculator
It calculates, obtains outer rate of load condensate, the output as the outer rate of load condensate calculator；
Internal loading rate calculator, input of the operating status of each equipment as the internal loading rate calculator, if 1≤i≤n,
Wherein n is the total number of equipment；If the operating status of i-th of equipment is Di, in i-th of equipment operation, Di is real
Number 1, otherwise Di is real number 0；If the internal loading of i-th of the equipment is Pi, then Pi=Ci × Di, wherein Ci is i-th of equipment
Rated heat input, rated heat load and specified humidity load summation；If internal loading rate is Pnr, thenWherein, P0 is equipment
The summation of rated heat input, rated heat load and humidity load when being all turned on, output of the internal loading rate Pnr as the internal loading rate calculator；
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 room ratio calculation device is used for,
Reach the temperature in preset threshold value and the room in the room actual temperature in the room and the difference of the room set temperature
In the case that degree control system is in operating status, which is defined as overtemperature room, overtemperature room is total in calculating subregion
Several ratios with temperature control system room sum in operating status, as overtemperature room ratio；The overtemperature room ratio
As 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；
Water outlet temperature setting device, the output of the outer rate of load condensate calculator, the output of the internal loading rate calculator and institute
Input 1 of the output respectively as water outlet temperature setting device, input 2 and input 3 for stating overtemperature room ratio controller, to the input
1 is weighted read group total with the input 2, total load rate is obtained, using the total load rate as independent variable, according to linearly or nonlinearly
Relationship calculates leaving water temperature setting value, calculate the water outlet temperature setting value and input 3 and value, using this and is worth as the water outlet
The output of temperature setting device；
Generator set controller, the output of the water outlet temperature setting device and leaving water temperature measured value are respectively as generator set controller
Input 1 and input 2, wherein setting value of the output of the water outlet temperature setting device as generator set controller, the leaving water temperature
Measured value of the measured value as generator set controller, the generator set controller use pid control algorithm；And
Power actuators, input of the output of the generator set controller as the power actuators, the power actuators are used
In the leaving water temperature for adjusting water cooler.
The water supply variable temperature control system provided by the invention fed back based on air-conditioning load rate and comfort level is had as follows and is had
Beneficial effect:
Firstly, water supply variable temperature control system provided by the invention is different from existing technology just with environment temperature table
The load of air-conditioning system is levied, water outlet temperature setting value is carried out and optimizes setting, the present invention introduces environment temperature, environment simultaneously
Humidity two principal elements characterize the outer load of air-conditioning system, while introducing the interior negative of equipment running status characterization air-conditioning system
Lotus carries out water outlet temperature setting value according to the total load of air-conditioning system and optimizes setting, more scientific and reasonable；
In addition, the prior art belongs to open loop technique for optimizing leaving water temperature setting value, the ratio control of overtemperature room is introduced
Device processed is that can further improve the deficiencies in the prior art by combining feedback technique for correcting water outlet temperature setting value.
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 embodiment of the present invention.
Fig. 2 is the structural block diagram of water supply variable temperature control system provided by the embodiment of the present invention.
Specific embodiment
In order to further illustrate the present invention embodiment provide based on air-conditioning load rate and comfort level feed back for water temperature changing
Control system is spent, is described in detail with reference to the accompanying drawings of the specification.
As shown in Figure 1, the embodiment of the present invention provides a kind of water supply temperature fed back based on air-conditioning load rate and comfort level
Control system is applied in air-conditioning system shown in FIG. 1, which covers at least one subregion, in the present embodiment
It is illustrated by taking one subregion of covering (dotted line surrounds part i.e. in figure) as an example.It include multiple rooms in the subregion (is room in Fig. 1
Between 1~room n), an air-conditioning is installed, each air-conditioning is configured with temperature controller, for corresponding room in each room
Actual temperature controlled.The subregion is correspondingly provided with variable frequency pump P201, for controlling the water supply flow in the subregion.
In the subregion, supply water temperature T1, return water temperature T2, pressure of supply water P.For i-th in the subregion
For room, room actual temperature is TZi, and room set temperature is TZisp, the operation shape of the temperature control system in room
State is Ri.More specifically, the room actual temperature in such as room 1 is TZ1, room set temperature is TZ1sp, the temperature in room 1
The operating status for spending control system is R1.
As shown in Fig. 2, water supply variable temperature control system provided in an embodiment of the present invention specifically includes: environment temperature rate of load condensate
Calculator A, ambient humidity rate of load condensate calculator B, outer rate of load condensate calculator C, internal loading rate calculator D, overtemperature room ratiometer
Calculate device E, overtemperature room ratio controller F, water outlet temperature setting device G, generator set controller H, power actuators I and related observing and controlling
Instrument (not shown).
About above-mentioned environment temperature rate of load condensate calculator A, environment temperature Tn is surveyed by above-mentioned related measure and control instrument, as
The input of environment temperature rate of load condensate calculator A, then environment temperature rate of load condensate calculator A is calculated according to linearly or nonlinearly relationship
Environment temperature rate of load condensate Pn1, using the environment temperature rate of load condensate Pn1 as the output of environment temperature rate of load condensate calculator A.
Such as environment is being corresponded to according to linear relationship when environment temperature Tn changes within the scope of 25 DEG C~40 DEG C for cold season
Temperature load rate Pn1 changes in 30%~100% range；When environment temperature Tn is lower than 25 DEG C, environment temperature rate of load condensate Pn1 is
When 30%, environment temperature Tn are higher than 40 DEG C, environment temperature rate of load condensate Pn1 is 100%.In the present embodiment, as environment temperature
A kind of optional physical relationship of Tn and environment temperature rate of load condensate Pn1: when 25 DEG C≤Tn≤40 DEG C, Pn1=(7 × Tn-
130)/150；When 25 DEG C of Tn <, Pn1=30%；When 40 DEG C of Tn >, Pn1=100%.
About above-mentioned ambient humidity rate of load condensate calculator B, ambient humidity φ n is surveyed by related measure and control instrument, as ring
The input of border humidity rate of load condensate calculator B, then ambient humidity rate of load condensate calculator B calculates environmental wet according to ambient humidity φ n
Spend rate of load condensate Pn2.Output of the ambient humidity rate of load condensate Pn2 being calculated as ambient humidity rate of load condensate calculator B.
Such as cold season, when ambient humidity φ n changes in the range of 60%~90%, ring is corresponded to according to linear relationship
Border humidity rate of load condensate Pn2 changes in 0%~100% range；When ambient humidity φ n is lower than 60%, ambient humidity rate of load condensate Pn2
It is 0%；When ambient humidity φ n is higher than 90%, ambient humidity rate of load condensate Pn2 is 100%.In the present embodiment, as environmental wet
A kind of optional physical relationship for spending φ n and ambient humidity rate of load condensate Pn2, as 60%≤φ n≤90%, Pn2=(10 × φ
n-6)/3；As φ n < 60%, Pn2=0；As φ n > 90%, Pn2=100%.
About above-mentioned outer rate of load condensate calculator C, the output of environment temperature rate of load condensate calculator A is as outer rate of load condensate calculator
The input 1 (i.e. Pn1) of C, input 2 (i.e. Pn2) of the output of ambient humidity rate of load condensate calculator B as outer rate of load condensate calculator C,
Read group total is weighted to input 1 and input 2, obtains outer rate of load condensate Por, the Por being calculated is calculated as outer rate of load condensate
The output of device C.Specifically, Por=Pn1 × k1+Pn2 × k2, wherein k1+k2=1.In the present embodiment, preferably k1=0.7,
K2=0.3, also, k1/k2 is the duty ratio of environment temperature and ambient humidity.
About above-mentioned internal loading rate calculator D, if sharing n equipment, wherein the operating status of i-th of equipment is Di,
In 1≤i≤n.In i-th of equipment operation, Di is real number 1, and otherwise Di is real number 0；If the internal loading of i-th of air-conditioning is
Pi.Then
Pi=Ci × Di
Wherein, rated heat input, rated heat load and specified humidity load summation of the Ci for i-th of equipment.If internal loading rate is Pnr, then
Wherein, the summation of rated heat input, rated heat load and humidity load when P0 is all turned on for equipment, internal loading rate Pnr are interior negative as this
The output of lotus rate calculator D；
About above-mentioned overtemperature room ratio calculation device E, the room actual temperature Ti in each room in subregion, room are set
Temperature Tisp and temperature control system operating status Ri respectively as overtemperature room ratio calculation device E input, in some room
Room actual temperature Ti and the difference of room set temperature Tisp reach preset threshold value and temperature control system and be in operation
In the case where state, which is denoted as overtemperature room, and then the sum for calculating the overtemperature room in the subregion is controlled with temperature
The ratio of system room sum in operating status, is known as overtemperature room ratio for the ratio, the overtemperature room ratio conduct
The output of overtemperature room ratio calculation device E.
About above-mentioned overtemperature room ratio controller F, the output of overtemperature room ratio calculation device E is as overtemperature room ratio
The input of controller F, and the measured value as overtemperature room ratio controller F；The setting value of overtemperature room ratio controller F
Value range is 0%~5%.Overtemperature room ratio controller F uses pid control algorithm or other control algolithms.
About water outlet temperature setting device G, using the output Por of above-mentioned outer rate of load condensate calculator as the water outlet temperature setting device
The input 1 of G, the input 2 using the output Pnr of above-mentioned internal loading rate calculator as water outlet temperature setting device G, overtemperature ratio control
Input 3 of the output of device F processed as water outlet temperature setting device G.
Firstly, water outlet temperature setting device G is weighted and averaged calculating to input 1 and input 2, total load rate is obtained.Specifically
Ground, if total load rate is Pr, then Pr=d1 × Por+d2 × Pnr, wherein d1+d2=1.In the present embodiment, preferably d1=
0.75, d2=0.25, also, d1/d2 is the ratio between outer load and internal loading.
Then, water outlet temperature setting device G is calculated using the total load rate Pr as independent variable according to linearly or nonlinearly relationship
Coolant-temperature gage setting value Tsp1.Total load rate Pr and the relationship of water outlet temperature setting value Tsp1 are as follows.Such as cold season, total load
When rate Pr changes in 30%~100% range, corresponding water outlet temperature setting value Tsp1 changes at 12 DEG C~7 DEG C；Total load rate
When Pr is lower than 30%, water outlet temperature setting value Tsp1 is 12 DEG C；When total load rate Pr is higher than 100%, water outlet temperature setting value
Tsp1 is 7 DEG C.In the present embodiment, as a kind of optional specific pass of total load rate Pr and water outlet temperature setting value Tsp1
System: as 30%≤Pr≤100%, Tsp1=(99-50 × Pr)/7；As Pr < 30%, Tsp1=12 DEG C；As Pr >
When 100%, Tsp1=7 DEG C.
Finally, water outlet temperature setting device G calculates leaving water temperature setting value Tsp1, (overtemperature ratio controller F's is defeated with input 3
The sum of out), obtain and output of the value Tsp as water outlet temperature setting device G.
About generator set controller H, setting value of the output Tsp of water outlet temperature setting device G as generator set controller H；It is related
Measure and control instrument measures supply water temperature, measured value of the supply water temperature measured value T1 of acquisition as generator set controller H, unit
Controller H uses pid control algorithm or other algorithms.
Input of the output of generator set controller H as above-mentioned power actuators I, power actuators I is for controlling cooling-water machine
The leaving water temperature of group.
The water supply variable temperature control system provided in an embodiment of the present invention fed back based on air-conditioning load rate and comfort level is had
It is following the utility model has the advantages that
Firstly, water supply variable temperature control system provided in an embodiment of the present invention is different from existing technology just with environment
Temperature characterizes the load of air-conditioning system, carries out water outlet temperature setting value and optimizes setting, the present invention introduces environment temperature simultaneously
Degree, ambient humidity two principal elements characterize the outer load of air-conditioning system, while introducing equipment running status characterization air-conditioning system
The internal loading of system carries out water outlet temperature setting value according to the total load of air-conditioning system and optimizes setting, more scientific and reasonable；
In addition, the prior art belongs to open loop technique for optimizing leaving water temperature setting value, the ratio control of overtemperature room is introduced
Device processed is that can further improve the deficiencies in the prior art by combining feedback technique for correcting water outlet temperature setting value.
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 (3)
1. a kind of water supply variable temperature control system fed back based on air-conditioning load rate and comfort level, is applied to the big system of air-conditioning,
It is characterized in that, comprising:
Environment temperature rate of load condensate calculator surveys input of the environment temperature as the environment temperature rate of load condensate calculator, according to line
Property or non-linear relation calculate environment temperature rate of load condensate, the output as the environment temperature rate of load condensate calculator；
Ambient humidity rate of load condensate calculator surveys input of the ambient humidity as the ambient humidity rate of load condensate calculator, according to line
Property or non-linear relation calculate ambient humidity rate of load condensate, the output as the ambient humidity rate of load condensate calculator；
Outer rate of load condensate calculator, output and the ambient humidity rate of load condensate calculator of the environment temperature rate of load condensate calculator
The input 1 and input 2 respectively as the outer rate of load condensate calculator are exported, summation meter is weighted to the input 1 and the input 2
It calculates, obtains outer rate of load condensate, the output as the outer rate of load condensate calculator；
Internal loading rate calculator, input of the operating status of each equipment as the internal loading rate calculator, if 1≤i≤n, wherein n
For the total number of equipment；If the operating status of i-th of equipment is Di, in i-th of equipment operation, Di is real number 1, no
Then Di is real number 0；If the internal loading of i-th of the equipment is Pi, then Pi=Ci × Di, wherein Ci is the specified of i-th of equipment
Thermic load and specified humidity load summation；If internal loading rate is Pnr, thenWherein, P0 is that equipment is all opened
The summation of rated heat input, rated heat load and humidity load when opening, output of the internal loading rate Pnr as the internal loading rate calculator；
Overtemperature room ratio calculation device, room actual temperature, room set temperature and the temperature control in each room in subregion
Input of the device operating status respectively as the overtemperature room ratio calculation device；The overtemperature room ratio calculation device is used for, described
The difference of the room actual temperature in room and the room set temperature reaches the control of the temperature in preset threshold value and the room
In the case that device is in operating status, which is defined as overtemperature room, calculates the sum and temperature in overtemperature room in subregion
The ratio of controller room sum in operating status, as overtemperature room ratio；The overtemperature room ratio is as overtemperature room
Between ratio calculation device output,
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；
Water outlet temperature setting device, the output of the outer rate of load condensate calculator, the output of the internal loading rate calculator and described super
The output of ratio controller respectively as the input 1 of water outlet temperature setting device, input 2 and inputs 3 between hot house, to 1 He of input
The input 2 is weighted read group total, obtains total load rate, using the total load rate as independent variable, according to linearly or nonlinearly closing
System calculates leaving water temperature setting value, calculate the water outlet temperature setting value and input 3 and value, using this and value as being somebody's turn to do water temperature out
Spend the output of setting apparatus；
Generator set controller, the output of the water outlet temperature setting device and leaving water temperature measured value are inputted respectively as generator set controller
1 and input 2, wherein setting value of the output as generator set controller of the water outlet temperature setting device, the leaving water temperature measure
It is worth the measured value as generator set controller, which uses pid control algorithm；And
Power actuators, input of the output of the generator set controller as the power actuators, the power actuators are for adjusting
Save the leaving water temperature of water cooler.
2. water supply variable temperature control system according to claim 1, which is characterized in that set the outer rate of load condensate as Por, then
The input 1 and input 2 of the Por and the outer rate of load condensate calculator meet:
Por=k1 × input 1+k2 × input 2, wherein k1+k2=1.
3. water supply variable temperature control system according to claim 1, which is characterized in that set the total load rate as Pr, then
The input 1 and input 2 of the Pr and water outlet temperature setting device meet:
Pr=d1 × input 1+d2 × input 2, wherein d1+d2=1.
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| CN108361910B (en) * | 2018-01-18 | 2020-04-03 | 上海广岚机电设备有限公司 | Control method of central air-conditioning system |
| CN117760071A (en) * | 2023-12-28 | 2024-03-26 | 北京东华博泰科技有限公司 | Dual-standard-based refrigeration water outlet temperature control method and related equipment |
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| JP2002130737A (en) * | 2000-10-26 | 2002-05-09 | Earth Clean Tohoku:Kk | Energy-saving air-conditioner |
| CN1916519A (en) * | 2006-08-01 | 2007-02-21 | 华南理工大学 | System of adjusting quantity of cold, and adjustment method for central cooling in region |
| CN1908536A (en) * | 2006-08-16 | 2007-02-07 | 广州市远正智能科技有限公司 | Cold volume governing system for regionally concentrated cold supply second-stage cold volume exchange station |
| CN101839528A (en) * | 2010-03-29 | 2010-09-22 | 江苏司麦克节能科技有限公司 | Control device for independently adjusting indoor air humidity |
| CN102705957A (en) * | 2012-06-07 | 2012-10-03 | 华南理工大学 | Method and system for predicting hourly cooling load of central air-conditioner in office building on line |
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