CN104930672A - Chilled water supply temperature control method and device - Google Patents
Chilled water supply temperature control method and device Download PDFInfo
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- CN104930672A CN104930672A CN201510420481.6A CN201510420481A CN104930672A CN 104930672 A CN104930672 A CN 104930672A CN 201510420481 A CN201510420481 A CN 201510420481A CN 104930672 A CN104930672 A CN 104930672A
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- chilled water
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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
- F24F2110/00—Control inputs relating to air properties
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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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
- F24F2140/50—Load
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- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a chilled water supply temperature control method and device. The method comprises the steps of 1, detecting the flow of chilled water in a chilled water header in an air-conditioner system; 2, reading the maximum value of a flow restraint parameter set of the air-conditioner system to obtain a first preset flow, wherein the flow limit parameter set of the air-conditioner system comprises the minimum limit value of a water chilling unit, a flow limit value corresponding to the minimum frequency limitation of a chilled water pump, and the minimum flow limit value of an adjusting valve; 3, judging whether the flow of the chilled water is smaller than or equal to the first preset flow or not; 4, increasing the chilled water supply temperature on the condition that the flow of the chilled water is smaller than or equal to the first preset flow. According to the chilled water supply temperature control method and device, the technical problem that the working efficiency of the air-conditioner system is low on the working condition that the flow of the chilled water is low is solved.
Description
Technical field
The present invention relates to airconditioning control field, in particular to a kind of control method and device of supply water temperature of chilled water.
Background technology
In conventional air conditioning system, the supply water temperature of chilled water is usually set to 7 DEG C under design conditions, and when the flow of chilled water is lower, illustrate that air-conditioning is in the operating mode of underload, the operating efficiency of air-conditioning system is lower, also causes the energy consumption of air-conditioning system high.
To be in ineffective problem under the operating mode of low discharge for above-mentioned air-conditioning system at chilled-water flow, not yet to propose effective solution at present.
Summary of the invention
Embodiments provide a kind of control method and device of supply water temperature of chilled water, to be in ineffective technical problem under the operating mode of low discharge at chilled-water flow at least to solve air-conditioning system.
According to an aspect of the embodiment of the present invention, provide a kind of control method of supply water temperature of chilled water, comprising: step S1: the flow detecting chilled water in the chilled water house steward in air-conditioning system; Step S2: read the maximum in the flow restriction parameter sets of air-conditioning system, obtain the first preset flow, wherein, the flow restriction parameter sets of air-conditioning system comprises: the minimum discharge limits value of handpiece Water Chilling Units, the flow restriction value of minimum frequency restriction correspondence of chilled water pump, the minimum discharge limits value of control valve; Step S3: judge whether the flow of chilled water is less than or equal to the first preset flow; Step S4: when the flow of chilled water is less than or equal to the first preset flow, heightens the supply water temperature of chilled water.
Further, after the supply water temperature heightening chilled water, method also comprises: the wet-bulb temperature reading each end room collected, and wherein, the end-equipment that each wet-bulb temperature is arranged in end room by air-conditioning system gathers; Calculate the minimum wet-bulb temperature in multiple wet-bulb temperature; When the supply water temperature of chilled water exceedes the minimum wet-bulb temperature in multiple wet-bulb temperature, regulate the supply water temperature of chilled water, make the supply water temperature of chilled water be no more than minimum temperature in multiple wet-bulb temperature.
Further, the step heightening the supply water temperature of chilled water comprises: the supply water temperature of chilled water is raised according to the first predetermined amplitude; Wherein, make the supply water temperature of chilled water according to first predetermined amplitude raise after, method also comprises: predetermined time cycle Posterior circle perform step S1 to step S4.
Further, after the supply water temperature heightening chilled water, method also comprises: the flow detecting chilled water; When the flow of chilled water is greater than the first preset flow and is less than the second preset flow, keep the supply water temperature of chilled water constant, wherein, the second preset flow equals the first preset flow and adds default amplitude.
Further, when the flow of chilled water is greater than the first preset flow and is less than the second preset flow, keep the supply water temperature of chilled water constant after, method also comprises: step S5: continue the flow detecting chilled water in real time; Step S6: when the flow of chilled water is more than or equal to the second preset flow, turns down the supply water temperature of chilled water.
Further, the step turning down the supply water temperature of chilled water comprises: the supply water temperature of chilled water is reduced according to the first predetermined amplitude; Wherein, make the supply water temperature of chilled water according to first predetermined amplitude reduce after, method also comprises: start after predetermined time cycle to perform step S5 to step S6.
According to the another aspect of the embodiment of the present invention, additionally provide a kind of control device of supply water temperature of chilled water, comprising: first detection module, for detecting the flow of chilled water in the chilled water house steward in air-conditioning system; First read module, for reading the maximum in the flow restriction parameter sets of air-conditioning system, obtain the first preset flow, wherein, the flow restriction parameter sets of air-conditioning system comprises: the minimum discharge limits value of handpiece Water Chilling Units, the flow restriction value of minimum frequency restriction correspondence of chilled water pump, the minimum discharge limits value of control valve; Judge module, for judging whether the flow of chilled water is less than or equal to the first preset flow; First processing module, for when the flow of chilled water is less than or equal to the first preset flow, heightens the supply water temperature of chilled water.
Further, device also comprises: the second read module, and for reading the wet-bulb temperature in each end room collected, wherein, the end-equipment that each wet-bulb temperature is arranged in end room by air-conditioning system gathers; Computing module, for calculating the minimum wet-bulb temperature in multiple wet-bulb temperature; Second processing module, for when the supply water temperature of chilled water exceedes the minimum wet-bulb temperature in multiple wet-bulb temperature, regulates the supply water temperature of chilled water, makes the supply water temperature of chilled water be no more than minimum temperature in multiple wet-bulb temperature.
Alternatively, the first processing module comprises: the first processing unit, raises according to the first predetermined amplitude for making the supply water temperature of chilled water.
Alternatively, device also comprises: the second detection module, for detecting the flow of chilled water; 3rd processing module, for when the flow of chilled water is greater than the first preset flow and is less than the second preset flow, keep the supply water temperature of chilled water constant, wherein, the second preset flow equals the first preset flow and adds default amplitude.
Alternatively, device also comprises: the 3rd detection module, for continuing the flow detecting chilled water in real time; 4th processing module, for when the flow of chilled water is more than or equal to the second preset flow, turns down the supply water temperature of chilled water.
Alternatively, the 4th processing module comprises: the second processing unit, reduces according to the first predetermined amplitude for making the supply water temperature of chilled water.
In embodiments of the present invention, adopt the maximum in the flow restriction parameter sets reading air-conditioning system, obtain the first preset flow, wherein, the flow restriction parameter sets of air-conditioning system comprises: the minimum discharge limits value of handpiece Water Chilling Units, the flow restriction value of the minimum frequency restriction correspondence of chilled water pump, the mode of the minimum discharge limits value of control valve, by detecting the flow of chilled water in the chilled water house steward in air-conditioning system and judging whether the flow of chilled water is less than or equal to the first preset flow, reach when the flow of chilled water is less than or equal to the first preset flow, heighten the object of the supply water temperature of chilled water, thus achieve the technique effect adjusting chilled water supply water temperature according to the load of air-conditioning system flexibly, and then solve air-conditioning system and be in ineffective technical problem under the operating mode of low discharge at chilled-water flow.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of the control method of the supply water temperature of chilled water according to the embodiment of the present invention one;
Fig. 2 is the flow chart of the control method of the supply water temperature of a kind of optional chilled water according to the embodiment of the present invention one; And
Fig. 3 is the structural representation of the control device of the supply water temperature of chilled water according to the embodiment of the present invention two.
Detailed description of the invention
The present invention program is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the embodiment of a part of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
It should be noted that, term " first ", " second " etc. in description of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiment 1
According to the embodiment of the present invention, provide a kind of embodiment of the method for control method of supply water temperature of chilled water, it should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, in some cases, can be different from the step shown or described by order execution herein.
Fig. 1 is the control method of the supply water temperature of chilled water according to the embodiment of the present invention, and as shown in Figure 1, the method comprises the steps:
Step S1: the flow detecting chilled water in the chilled water house steward in air-conditioning system;
In embodiments of the present invention, the size of the flow of the chilled water in the chilled water house steward in air-conditioning system can be detected in real time.
Step S2: read the maximum in the flow restriction parameter sets of air-conditioning system, obtain the first preset flow, wherein, the flow restriction parameter sets of air-conditioning system comprises: the minimum discharge limits value of handpiece Water Chilling Units, the flow restriction value of minimum frequency restriction correspondence of chilled water pump, the minimum discharge limits value of control valve;
Particularly, in the middle of a kind of optional embodiment, the minimum discharge limits value of above-mentioned handpiece Water Chilling Units can be 30% of air-conditioning metered flow, the flow restriction value that the minimum frequency restriction of above-mentioned chilled water pump is corresponding can work as flow value corresponding when chilled water pump is 25hz, the minimum discharge limits value of above-mentioned control valve can be the flow value corresponding when aperture is 15%, it should be noted that, in this programme, the minimum discharge limits value of handpiece Water Chilling Units can be selected, the flow restriction value of the minimum frequency restriction correspondence of chilled water pump, maximum in the minimum discharge limits value of control valve is used as the first preset flow.
Step S3: judge whether the flow of chilled water is less than or equal to the first preset flow;
Step S4: when the flow of chilled water is less than or equal to the first preset flow, heightens the supply water temperature of chilled water.
Particularly, in this programme, can contrast the flow of the chilled water in chilled water pipe and above-mentioned the first preset flow got, when the flow of chilled water is less than or equal to the first preset flow, then illustrate that the duty of current air-conditioning is the duty of underload, the demand of end to water temperature is lower, this programme passes through above-mentioned steps, under the duty of underload, heighten the supply water temperature of chilled water, the COP of handpiece Water Chilling Units can be improved, reduce the energy consumption of system.Alternatively, in this programme, the flow of detection chilled water that can be real-time, according to real-time the heightening the supply water temperature of chilled water of relation of chilled-water flow and the first preset flow.Here it should be noted that, this programme can realize following effect, and chilled water supply water temperature often improves 1 DEG C, and the refrigerating efficiency of handpiece Water Chilling Units can improve 3% to 5%.
This programme is by detecting the flow of the chilled water of chilled water pipe in real time, the first preset flow is determined by the flow restriction parameter sets of air-conditioning system, then the supply water temperature of chilled water is improved according to the flow of the chilled water of chilled water pipe and the relation of the first preset flow, achieve the supply water temperature heightening chilled water under the condition of work of air-conditioning underload, thus improve air-conditioning system operating efficiency at the lower flow conditions.
Alternatively, in step S4: after heightening the supply water temperature of chilled water, the control method according to the supply water temperature of the chilled water of the embodiment of the present invention also comprises:
Step S42: the wet-bulb temperature reading each end room collected, wherein, the end-equipment that each wet-bulb temperature is arranged in end room by air-conditioning system gathers;
In embodiments of the present invention, end room is the room at air conditioning terminal place, can obtain wet-bulb temperature by wet-bulb thermometer.
Step S44: calculate the minimum wet-bulb temperature in multiple wet-bulb temperature;
Step S46: when the supply water temperature of chilled water exceedes the minimum wet-bulb temperature in multiple wet-bulb temperature, regulates the supply water temperature of chilled water, makes the supply water temperature of chilled water be no more than minimum temperature in multiple wet-bulb temperature.
Here it should be noted that, in this programme, regulate the supply water temperature of chilled water in any case, the supply water temperature of chilled water must can not exceed the minimum of a value of the wet-bulb temperature in all end rooms.
Alternatively, step S4: the step heightening the supply water temperature of chilled water comprises:
Step S40: the supply water temperature of chilled water is raised according to the first predetermined amplitude;
In embodiments of the present invention, the first predetermined amplitude is the variable quantity of supply water temperature, the excessive or too small Adjustment effect that all can affect air-conditioning system of the first predetermined amplitude.
Alternatively, the value of the first predetermined amplitude can be steady state value, such as Δ T, when judging that the flow of chilled water is less than or equal to the first preset flow by step S1 to step S3, former supply water temperature is raised Δ T.In practical application scene, the span of Δ T can be 0 DEG C of < Δ T < 1 DEG C, and preferred value is 0.5 DEG C.
It should be noted that, in this programme, after the supply water temperature heightening chilled water, after predetermined time cycle, (can be the interval of a time cycle) detects the supply water temperature of chilled water again, and namely circulation performs above-mentioned steps S1 to S4.
Alternatively, in step S4: after heightening the supply water temperature of chilled water, the control method according to the supply water temperature of the chilled water of the embodiment of the present invention also comprises:
Step S72: the flow detecting chilled water;
Step S74: when the flow of chilled water is greater than the first preset flow and is less than the second preset flow, keep the supply water temperature of chilled water constant, wherein, the second preset flow equals the first preset flow and adds default amplitude.
In embodiments of the present invention, the span presetting amplitude can be: 0 < Δ G < 10% × Gmin, preferred value is 5%Gmin, it should be noted that, Gmin is above-mentioned first preset flow.
Alternatively, in step S74: the flow of chilled water is greater than the first preset flow and is less than the second preset flow, keep the supply water temperature of chilled water constant after, the control method according to the supply water temperature of the chilled water of the embodiment of the present invention also comprises:
Step S5: continue the flow detecting chilled water in real time;
Step S6: when the flow of chilled water is more than or equal to the second preset flow, turns down the supply water temperature of chilled water.
Particularly, in this programme, the flow of chilled water can be detected in real time, the flow of chilled water when being greater than above-mentioned second preset flow, then illustrate in the current situation, end is lower for the demand of water temperature, then turn down the supply water temperature of chilled water.
Alternatively, step S6: the step turning down the supply water temperature of chilled water comprises:
Step S60: the supply water temperature of chilled water is reduced according to the first predetermined amplitude;
Alternatively, make the supply water temperature of chilled water according to first predetermined amplitude reduce after, the control method according to the supply water temperature of the chilled water of the embodiment of the present invention also comprises: start after predetermined time cycle to perform step S5 to step S6.
The control method embodiment of the supply water temperature of the above-mentioned chilled water provided according to the embodiment of the present invention and Alternate embodiments thereof, below for the flow chart of wherein a kind of control method of supply water temperature of optional chilled water, the chilled water Water temperature control method of the application is described in detail.
Figure 2 shows that the flow chart of the control method of the supply water temperature of a kind of optional chilled water according to the embodiment of the present invention one, as shown in Figure 2, the method comprises:
Steps A: detect chilled-water flow G, wherein, detects the flow of chilled water in the chilled water house steward in air-conditioning system, is designated as chilled-water flow G;
Step B: obtain the first preset flow Gmin, wherein, the restriction of this minimum discharge be limit by the minimum discharge of handpiece Water Chilling Units, the factor decision such as the minimum discharge restriction of the restriction of the minimum frequency of chilled water pump or control valve;
State on the invention in step B, read the maximum in the flow restriction parameter sets of air-conditioning system, obtain the first preset flow, wherein, the flow restriction parameter sets of air-conditioning system comprises: the minimum discharge limits value of handpiece Water Chilling Units, the flow restriction value of minimum frequency restriction correspondence of chilled water pump, the minimum discharge limits value of control valve;
Step C:G≤Gmin, wherein, judges whether the flow G of chilled water is less than or equal to the first preset flow Gmin;
Step D: when step C is judged as YES, obtains first and presets amplitude Δ T, and wherein, the first default amplitude can be steady state value also can be changing value, and step e: heightening supply water temperature T is T+ Δ T;
Step F: when step C is judged as NO, obtains the second preset flow Gmin+ Δ G, and wherein, it can be steady state value that G is greater than zero, G, also can be changing value;
Step G:Gmin < G < Gmin+ Δ G, wherein, judges whether the flow G of chilled water is greater than the first preset flow Gmin and is less than the second preset flow Gmin+ Δ G;
Step H: when step G is judged as YES, maintains supply water temperature T;
Step I: when step G is judged as NO, judges G < Gmin+ Δ G further, namely judges whether the flow G of chilled water is more than or equal to the second preset flow Gmin+ Δ G;
Step J: when step I is judged as YES, turning down supply water temperature is T-Δ T, and wherein, Δ T can be steady state value, can be also changing value, and the Δ T in step J also can be different from the Δ T in step D or step e;
Step K: when step I is judged as NO, or in execution step e, after step H or step J, perform and guarantee that the supply water temperature after adjusting is no more than the minimum temperature in wet-bulb temperature, wherein, this step comprises: the wet-bulb temperature reading each end room collected, wherein, the end-equipment that each wet-bulb temperature is arranged in end room by air-conditioning system gathers, calculate the minimum wet-bulb temperature in multiple wet-bulb temperature, when the supply water temperature of chilled water exceedes the minimum wet-bulb temperature in multiple wet-bulb temperature, regulate the supply water temperature of chilled water, the supply water temperature of chilled water is made to be no more than minimum temperature in multiple wet-bulb temperature,
Step L: after time delay preset time period, returns execution steps A, forms the circulation that can continue to control air-conditioning system chilled water temperature.
It should be noted that herein, embodiment illustrated in fig. 2ly give the chilled water Water temperature control method of steps A to step L, but, also only can perform the part steps in above-mentioned steps, such as steps A to step e, step K and step L, to realize chilled water Water temperature control.
Embodiment 2
According to the embodiment of the present invention, provide a kind of embodiment of control device of supply water temperature of chilled water, it should be noted that, this device is used for realizing said method embodiment and preferred embodiment, has carried out repeating no more of explanation.
Fig. 3 is the schematic diagram of the control device of the supply water temperature of a kind of chilled water according to the embodiment of the present invention two, and as shown in Figure 3, this device comprises:
First detection module 10, for detecting the flow of chilled water in the chilled water house steward in air-conditioning system;
First read module 20, for reading the maximum in the flow restriction parameter sets of air-conditioning system, obtain the first preset flow, wherein, the flow restriction parameter sets of air-conditioning system comprises: the minimum discharge limits value of handpiece Water Chilling Units, the flow restriction value of minimum frequency restriction correspondence of chilled water pump, the minimum discharge limits value of control valve;
Judge module 30, for judging whether the flow of chilled water is less than or equal to the first preset flow;
First processing module 40, for when the flow of chilled water is less than or equal to the first preset flow, heightens the supply water temperature of chilled water.
By above-mentioned first detection module 10, first read module 20, judge module 30 and the first processing module 40, according to the comparison result of chilled-water flow and the first preset flow, determine the adjustment of chilled water supply water temperature, achieve air-conditioning system when running in low-load conditions, chilled water supply water temperature is improved under the prerequisite meeting air-conditioning temperature-reducing dehumidifying, the problem of resolution system inefficiency, improves the operational efficiency of entire system.
Alternatively, control device according to the supply water temperature of the chilled water of the embodiment of the present invention also comprises: the second read module, for reading the wet-bulb temperature in each end room collected, wherein, the end-equipment that each wet-bulb temperature is arranged in end room by air-conditioning system gathers; Computing module, for calculating the minimum wet-bulb temperature in multiple wet-bulb temperature; Second processing module, for when the supply water temperature of chilled water exceedes the minimum wet-bulb temperature in multiple wet-bulb temperature, regulates the supply water temperature of chilled water, makes the supply water temperature of chilled water be no more than minimum temperature in multiple wet-bulb temperature.
Alternatively, the first processing module 40 comprises: the first processing unit, raises according to the first predetermined amplitude for making the supply water temperature of chilled water;
Alternatively, the control device according to the supply water temperature of the chilled water of the embodiment of the present invention also comprises: the second detection module, for detecting the flow of chilled water; 3rd processing module, for when the flow of chilled water is greater than the first preset flow and is less than the second preset flow, keep the supply water temperature of chilled water constant, wherein, the second preset flow equals the first preset flow and adds default amplitude.
Alternatively, the control device according to the supply water temperature of the chilled water of the embodiment of the present invention also comprises: the 3rd detection module, for continuing the flow detecting chilled water in real time; 4th processing module, for when the flow of chilled water is more than or equal to the second preset flow, turns down the supply water temperature of chilled water.
Alternatively, the 4th processing module comprises: the second processing unit, reduces according to the first predetermined amplitude for making the supply water temperature of chilled water.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.
In several embodiments that the application provides, should be understood that, disclosed technology contents, the mode by other realizes.Wherein, device embodiment described above is only schematic, the such as division of described unit, can be that a kind of logic function divides, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the INDIRECT COUPLING of unit or module or communication connection can be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple unit.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises all or part of step of some instructions in order to make a computer equipment (can be personal computer, server or the network equipment etc.) perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, read-only storage (ROM, Read-OnlyMemory), random access memory (RAM, Random Access Memory), portable hard drive, magnetic disc or CD etc. various can be program code stored medium.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. a control method for the supply water temperature of chilled water, is characterized in that, comprising:
Step S1: the flow detecting chilled water in the chilled water house steward in air-conditioning system;
Step S2: read the maximum in the flow restriction parameter sets of described air-conditioning system, obtain the first preset flow, wherein, the flow restriction parameter sets of described air-conditioning system comprises: the minimum discharge limits value of handpiece Water Chilling Units, the flow restriction value of minimum frequency restriction correspondence of chilled water pump, the minimum discharge limits value of control valve;
Step S3: judge whether the flow of described chilled water is less than or equal to described first preset flow;
Step S4: when the flow of described chilled water is less than or equal to described first preset flow, heighten the supply water temperature of described chilled water.
2. method according to claim 1, is characterized in that, after the supply water temperature heightening described chilled water, described method also comprises:
Read the wet-bulb temperature in each end room collected, wherein, the end-equipment that each wet-bulb temperature is arranged in described end room by described air-conditioning system gathers;
Calculate the minimum wet-bulb temperature in multiple described wet-bulb temperature;
When the supply water temperature of described chilled water exceedes the minimum wet-bulb temperature in multiple described wet-bulb temperature, regulate the supply water temperature of described chilled water, make the supply water temperature of described chilled water be no more than minimum temperature in multiple described wet-bulb temperature.
3. method according to claim 2, is characterized in that, the step heightening the supply water temperature of described chilled water comprises:
The supply water temperature of described chilled water is raised according to the first predetermined amplitude;
Wherein, making after the supply water temperature of described chilled water raises according to described first predetermined amplitude, described method also comprises: predetermined time cycle Posterior circle performs described step S1 to described step S4.
4. method as claimed in any of claims 1 to 3, is characterized in that, after the supply water temperature heightening described chilled water, described method also comprises:
Detect the flow of described chilled water;
When the flow of described chilled water is greater than described first preset flow and is less than the second preset flow, keep the supply water temperature of described chilled water constant, wherein, described second preset flow equals described first preset flow and adds default amplitude.
5. method according to claim 4, is characterized in that, when the flow of described chilled water is greater than described first preset flow and is less than the second preset flow, keep the supply water temperature of described chilled water constant after, described method also comprises:
Step S5: continue the flow detecting described chilled water in real time;
Step S6: when the flow of described chilled water is more than or equal to described second preset flow, turn down the supply water temperature of described chilled water.
6. method according to claim 5, is characterized in that, the step turning down the supply water temperature of described chilled water comprises:
The supply water temperature of described chilled water is reduced according to described first predetermined amplitude;
Wherein, making after the supply water temperature of described chilled water reduces according to described first predetermined amplitude, described method also comprises: after described predetermined period of time, start to perform described step S5 to described step S6.
7. a control device for the supply water temperature of chilled water, is characterized in that, comprising:
First detection module, for detecting the flow of chilled water in the chilled water house steward in air-conditioning system;
First read module, for reading the maximum in the flow restriction parameter sets of described air-conditioning system, obtain the first preset flow, wherein, the flow restriction parameter sets of described air-conditioning system comprises: the minimum discharge limits value of handpiece Water Chilling Units, the flow restriction value of minimum frequency restriction correspondence of chilled water pump, the minimum discharge limits value of control valve;
Judge module, for judging whether the flow of described chilled water is less than or equal to described first preset flow;
First processing module, for when the flow of described chilled water is less than or equal to described first preset flow, heightens the supply water temperature of described chilled water.
8. device according to claim 7, is characterized in that, described device also comprises:
Second read module, for reading the wet-bulb temperature in each end room collected, wherein, the end-equipment that each wet-bulb temperature is arranged in described end room by described air-conditioning system gathers;
Computing module, for calculating the minimum wet-bulb temperature in multiple described wet-bulb temperature;
Second processing module, for exceeding the minimum wet-bulb temperature in multiple described wet-bulb temperature at the supply water temperature of described chilled water, regulate the supply water temperature of described chilled water, make the supply water temperature of described chilled water be no more than minimum temperature in multiple described wet-bulb temperature.
9. device according to claim 8, is characterized in that, described first processing module comprises:
First processing unit, raises according to the first predetermined amplitude for making the supply water temperature of described chilled water.
10. according to the device in claim 7 to 9 described in any one, it is characterized in that, described device also comprises:
Second detection module, for detecting the flow of described chilled water;
3rd processing module, for being greater than described first preset flow at the flow of described chilled water and being less than the second preset flow, keep the supply water temperature of described chilled water constant, wherein, described second preset flow equals described first preset flow and adds default amplitude.
11. devices according to claim 10, is characterized in that, described device also comprises:
3rd detection module, for continuing the flow detecting described chilled water in real time;
4th processing module, for when the flow of described chilled water is more than or equal to described second preset flow, turns down the supply water temperature of described chilled water.
12. devices according to claim 11, is characterized in that, described 4th processing module comprises:
Second processing unit, reduces according to described first predetermined amplitude for making the supply water temperature of described chilled water.
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| CN113883663A (en) * | 2021-09-30 | 2022-01-04 | 珠海格力电器股份有限公司 | Method and device for controlling outlet water temperature of cold machine and air conditioning equipment |
| CN115183435A (en) * | 2022-06-13 | 2022-10-14 | 西安华为数字能源技术有限公司 | Control method and device of air conditioning system |
| CN115597189A (en) * | 2022-11-04 | 2023-01-13 | 江苏橙智云信息技术有限公司（Cn） | Cloud-based simulation method and system for energy-saving strategy of chilled water pump |
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