CN106440188B - Automatic air conditioner operation capacity adjusting system and method - Google Patents
Automatic air conditioner operation capacity adjusting system and method Download PDFInfo
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- CN106440188B CN106440188B CN201610810361.1A CN201610810361A CN106440188B CN 106440188 B CN106440188 B CN 106440188B CN 201610810361 A CN201610810361 A CN 201610810361A CN 106440188 B CN106440188 B CN 106440188B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008901 benefit Effects 0.000 claims abstract description 42
- 239000005457 ice water Substances 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims abstract 2
- 238000004458 analytical method Methods 0.000 claims description 47
- 238000004378 air conditioning Methods 0.000 claims description 46
- 238000007710 freezing Methods 0.000 claims description 19
- 230000008014 freezing Effects 0.000 claims description 18
- 239000000498 cooling water Substances 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 13
- 238000012886 linear function Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 22
- 230000006872 improvement Effects 0.000 abstract description 8
- 238000004364 calculation method Methods 0.000 description 16
- 230000005611 electricity Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005457 optimization Methods 0.000 description 1
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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
- 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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- 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
- F24F2140/60—Energy consumption
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Abstract
The invention relates to an automatic air conditioner running capacity adjusting system and a method thereof.A load rate analyzing module is established by utilizing information of the temperature, the running current and the like of ice water inlet and outlet water of an air conditioner host, the running capacity of each air conditioner host and the sum of the air conditioner capacity required by heat balance of a building space can be calculated, and a high-efficiency multi-host running regulating method meeting the requirement of the space air conditioner capacity is provided by combining the load rate and a power consumption conversion module. The invention further provides an air conditioner host adjusting method, which can determine the prior operation sequence and the operation number according to the power consumption condition of each air conditioner host after operation, and transfer the operation capacity of the air conditioner with low load rate to other operating air conditioner hosts, so that the air conditioner hosts are maintained at high load rate and meet the total operation capacity requirement of the air conditioner, and the operation efficiency trend is analyzed and the energy-saving benefit after improvement of regulation and control is predicted.
Description
Technical Field
The invention relates to an automatic air conditioner operation capacity adjusting system and method, which simultaneously record the operation load rate of an air conditioner and analyze the operation efficiency trend of an air conditioner host and predict the energy-saving benefit after the regulation and control are improved.
Background
Under the high consciousness of energy saving and carbon reduction, the reduction of energy use is an important issue. Generally, most energy management products utilize an ICT technology to complete power utilization data collection so as to provide management and control energy equipment or report data, but no optimized operation strategy exists for a plurality of air conditioning units provided by a user. Therefore, how to let the power consumption intelligent automatic operation control mode method and design the air conditioner host energy consumption calculation analysis mode helps the user to maintain the high load rate of each air conditioner host according to the total operation capacity requirement of the air conditioner on site becomes the subject of research by all parties.
Disclosure of Invention
The invention provides an automatic air conditioner operation capacity adjusting system, comprising: the system comprises a load rate analysis module, an operation capacity analysis module, a load rate and power consumption conversion module, an operation capacity control module, an energy-saving benefit analysis module and a communication and receiving module, wherein the load rate analysis module calculates the load rate of each air conditioner host according to the ice water inlet temperature, the ice water outlet temperature, the cooling water inlet temperature, the cooling water outlet temperature and the operation current of the air conditioner hosts;
the operation capacity analysis module is used for calculating the operation capacity of each air conditioner host according to the operation state, the freezing capacity setting and the load rate of each air conditioner host, wherein the load rate and power consumption conversion module is used for converting the power consumption per freezing ton (KW/RT) under the load rate corresponding to each air conditioner host according to the operation curve setting of each air conditioner host, the operation capacity control module is used for adjusting the operation of each air conditioner host according to the load rate, the operation capacity and the power consumption per freezing ton of each air conditioner host, the energy-saving benefit analysis module is used for calculating the power consumption and the energy-saving benefit of each air conditioner host, and the communication and receiving module is used for providing the connection between the load rate analysis module, the operation capacity analysis module, the load rate and power consumption conversion module, the operation capacity control module and the energy-saving benefit analysis module and each.
The operation curve of each air conditioner main machine is set to be a linear function, a multiple function and a multi-section linear function.
The load rate analysis module can execute running abnormity analysis, which comprises judging the condition of a full-load area of the air conditioner host, calculating the average temperature difference between the inlet water and the outlet water of ice water under the condition of the full-load area, storing and updating historical data of the temperature difference to the average temperature difference of the full-load running, and judging that the air conditioner host is abnormal when the temperature difference between the inlet water and the outlet water of the ice water is too low or the trend of historical data is abnormal (for example, the difference between two pens is too.
The operation capacity control module analyzes the power consumption condition of each air conditioner host according to the collected load rate and operation capacity of the air conditioner host and other operation analysis parameters to execute low-load-rate shutdown and minimum air conditioner number control, so that the air conditioner hosts are maintained at a high load rate and meet the requirement of the total operation capacity of the air conditioner.
The invention provides an automatic air conditioner operation capacity adjusting method, which comprises the following steps:
the load rate analysis module is connected with the receiving module through communication and collects ice water inlet temperature, ice water outlet temperature, cooling water inlet temperature, cooling water outlet temperature and running current of the air-conditioning hosts, and calculates the load rate of each air-conditioning host;
the operation capacity analysis module is connected with the receiving module through communication and collects the operation state, the freezing capacity setting and the load rate of each air conditioner host, and calculates the operation capacity of each air conditioner host; and
and the operation capacity control module and the energy-saving benefit analysis module are used for calculating the power consumption and the energy-saving benefit of each air-conditioning host corresponding to the plurality of operation modes according to the load rate and the operation capacity of each air-conditioning host and the power consumption adjustment of each refrigeration ton, and adjusting the operation of each air-conditioning host.
The operation modes are a low-load-rate shutdown mode, a lowest air conditioner host machine number mode and a user-defined parameter mode, after the energy-saving benefit analysis module calculates the power consumption and the energy-saving benefit of each operation mode, the operation capacity control module adjusts the operation of each air conditioner host according to the operation mode which accords with the lowest power consumption and the highest energy-saving benefit.
The low-load-rate shutdown mode determines the priority of operation according to the load rate of each air conditioner host, the air conditioner host with high load rate is operated preferentially, and the air conditioner host with low load rate is shutdown preferentially.
And after the total operation capacity of each air conditioner host is added in the lowest air conditioner host station number mode, the air conditioner hosts are operated in the least number according with the total operation capacity.
The self-defined parameter mode determines the priority of operation according to the power consumption of each air conditioner host, the air conditioner host with high power consumption is shut down preferentially, and the air conditioner host with low power consumption is operated preferentially.
The automatic air conditioner operation capacity adjusting system and method provided by the invention help a user to maintain the high load rate of each air conditioner host according to the total operation capacity requirement of the on-site air conditioner. Compared with the prior art, the invention has the following advantages:
1. the automatic air conditioner operation capacity adjusting method of the invention provides three analysis modes which are respectively a low load rate shutdown mode, a lowest air conditioner host machine number mode and a user-defined parameter mode, can determine a priority operation sequence and an operation machine number according to the power consumption condition of each air conditioner host machine after operation, and transfers the air conditioner operation capacity with low load rate to other air conditioner host machines in operation, so that the air conditioner host machines are all maintained at high load rate and meet the requirement of the total operation capacity of the air conditioner.
2. The invention provides automatic detection and calculation modes of the air conditioner host load rate, the air conditioner host running capacity, the air conditioner host power consumption per freezing ton (KW/RT) and the like, can automatically analyze the air conditioner host running power consumption and the air conditioner running capacity requirement of a building space, and solves the traditional limitation that manual setting and manual measurement are needed.
3. The load rate analysis module of the air conditioner host can execute running abnormity analysis, judge and calculate the average temperature difference of the ice water inlet and the ice water outlet under the condition of the fully loaded area through the condition of the fully loaded area of the air conditioner host, and judge that the air conditioner host is abnormal when the temperature difference of the ice water inlet and the ice water outlet is too low or the trend of historical data is abnormal (for example, the difference between two pens is too large or the slope change is too large).
4. The energy-saving benefit calculation analysis is to collect the operation capacity of each air-conditioning host and the power consumption per refrigerating ton before improvement, calculate the power consumption of the air-conditioning before improvement, collect the intelligent analysis results of the number of the operation units, the operation capacity of each air-conditioning host, the power consumption per refrigerating ton and the like, and calculate the power consumption of the air-conditioning after improvement. And predicting and analyzing the energy-saving benefit of the optimization of the operation capacity of the air conditioner main machine by improving the power consumption of the front air conditioner and the power consumption of the rear air conditioner.
Drawings
Fig. 1 is a schematic diagram of an automatic air conditioner operation capacity adjustment system according to the present invention.
Fig. 2 is a flowchart of an automatic air conditioner operation capacity adjusting method according to the present invention.
Description of the reference numerals
1, a load rate analysis module;
2 running capacity analysis module;
3, a load rate and power consumption conversion module;
4 operating a capacity control module;
5, an energy-saving benefit analysis module;
6 communication and access module;
7, an air conditioner host;
the flow of steps S201 to S203.
Detailed Description
Referring to fig. 1, it is shown that the system for adjusting the operating capacity of an automatic air conditioner according to the present invention comprises a load rate analyzing module 1, an operating capacity analyzing module 2, a load rate and power consumption converting module 3, an operating capacity control module 4, an energy saving benefit analyzing module 5, a communication and accessing module 6, and a plurality of air conditioner hosts 7, wherein the load rate analyzing module 1 detects the temperature of water entering ice by using the communication and accessing module 6 (T;)wi) Temperature (T) of water discharged from ice waterwo) Cooling water inlet temperature (T)ci) And the outlet temperature (T) of the cooling waterco) And signals such as operating current (I) and the like, judge the full-load area condition of the air conditioner main unit 7 and execute the average calculation of the temperature difference between the inlet water and the outlet water of the ice water under the full-load area condition. And then collecting the real-time temperature difference value of the ice water inlet and outlet water, and calculating to provide the load rate of the air conditioner host 7. The operation capacity analysis module 2 calculates and provides the operation capacity of the air-conditioning host 7 by using the load rate calculated by the load rate analysis module 1, the operation state of the air-conditioning host 7 collected by the communication and receiving module 6 and the freezing capacity setting of the air-conditioning host 7, and the load rate and power consumption conversion module 3 converts and provides power consumption per freezing ton (KW/RT) under the condition of the load rate of each real-time air-conditioning host 7 by using the operation curve setting (for example, linear function, multi-time function, multi-stage linear function … and other conversion formulas) of the air-conditioning host 7. In addition, the operating capacity control module 4 collects the emptyThe load factor and the operating capacity of the air conditioner main unit 7 and other operation analysis parameters are used to execute power consumption intelligent automatic operation control, and the intelligent analysis result (such as the operating capacity, the number of operating units, the main unit load factor and other improvement parameters) is provided to the energy-saving benefit analysis module 5, so that the energy-saving benefit for optimizing the operating capacity of each air conditioner main unit 7 is predicted and provided.
The system can calculate the energy consumption of the air conditioner host, firstly, the full-load operation of the air conditioner host is judged, if the air conditioner host is in full-load operation, the average temperature difference of the full-load operation is calculated and updated to the historical data of the average temperature difference of the full-load operation, and then, the load rate of the air conditioner host is calculated according to the historical data of the average temperature difference of the full-load operation. If the air conditioner main unit is not in full-load operation, the load rate of the air conditioner main unit is directly calculated according to the history data of the average temperature difference in full-load operation.
Judging and utilizing water inlet temperature (T) of collected ice water during full-load operation of air conditioner main unitwi) Temperature (T) of water discharged from ice waterwo) Cooling water inlet temperature (T)ci) And the outlet temperature (T) of the cooling waterco) And signals such as operating current (I) and the like, and whether the air-conditioning main machine is in full-load operation is judged, wherein the judgment condition formula of the full-load operation of the air-conditioning main machine is as follows:
FS＝F1(Twi,Two,Tci,Tco,I)，
wherein FSFor full load operation, TwiTemperature of water supply for ice water, TwoWater temperature of ice water, TciFor the inlet water temperature of the cooling water, TcoThe temperature of the cooling water is the outlet water temperature, and I is the running current.
The calculation of the average temperature difference of full load operation is that under the condition of full load area of the air conditioner main machine, the average calculation of the temperature difference of inlet and outlet water of ice water is measured and executed, and the calculation formula of the average temperature difference of full load operation is as follows:
ΔTave＝F2(Twi,Two,n)，
ΔTavethe average temperature difference is the average temperature difference of full load operation, and n is the measurement times of the temperature of the inlet water and the outlet water of the ice water.
The calculation formula of the load rate of the air conditioner main unit is as follows:
η＝F3(ΔTave-N,Twi,Two,N)，
η is the air conditioner main unit load rate, Δ Tave-NN is the historical data storage quantity.
The electricity consumption of the air-conditioning host machine per refrigerating ton is calculated, and the calculation result is obtained through conversion between the load rate and the electricity consumption per refrigerating ton (KW/RT) according to the load rate calculation result of the air-conditioning host machine.
The operation capacity of the air conditioner main machine is calculated according to the calculation result of the load rate of the air conditioner main machine, the operation state of the air conditioner main machine and the refrigerating capacity.
The calculation formula of the operation capacity of the air conditioner main unit is as follows:
TRT＝F4(S,η,XRT)，
TRTis the operation capacity of the air conditioner main unit, S is the operation state of the air conditioner main unit, η is the load rate of the air conditioner main unit, XRTAnd setting the freezing capacity of the air conditioner main unit.
Referring to fig. 2, a flow chart of the method for adjusting the operating capacity of an automatic air conditioner according to the present invention includes the following steps:
s201: the load rate analysis module is connected with the receiving module through communication and collects ice water inlet temperature, ice water outlet temperature, cooling water inlet temperature, cooling water outlet temperature and running current of the air-conditioning hosts, and calculates the load rate of each air-conditioning host;
s202: the operation capacity analysis module is connected with the receiving module through communication and collects the operation state, the freezing capacity setting and the load rate of each air conditioner host, and calculates the operation capacity of each air conditioner host; and
s203: and the operation capacity control module and the energy-saving benefit analysis module are used for calculating the power consumption and the energy-saving benefit of each air-conditioning host corresponding to the plurality of operation modes according to the load rate and the operation capacity of each air-conditioning host and the power consumption adjustment of each refrigeration ton, and adjusting the operation of each air-conditioning host.
The operation modes are a low-load-rate shutdown mode, a lowest air conditioner host machine number mode and a user-defined parameter mode, after the energy-saving benefit analysis module calculates the power consumption and the energy-saving benefit of each operation mode, the operation capacity control module adjusts the operation of each air conditioner host according to the operation mode which accords with the lowest power consumption and the highest energy-saving benefit.
The low-load-rate shutdown mode determines the priority of operation according to the load rate of each air conditioner host, the air conditioner host with high load rate is operated preferentially, and the air conditioner host with low load rate is shutdown preferentially.
And after the total operation capacity of each air conditioner host is added in the lowest air conditioner host station number mode, the air conditioner hosts are operated in the least number according with the total operation capacity.
The self-defined parameter mode determines the priority of operation according to the power consumption of each air conditioner host, the air conditioner host with high power consumption is shut down preferentially, and the air conditioner host with low power consumption is operated preferentially.
The energy-saving benefit calculation includes collecting the running capacity of each air conditioner and the power consumption of each freezing ton before entering the power consumption intelligent automatic running control mode, collecting the intelligent analysis results of the running number, the running capacity of each air conditioner and the power consumption of each freezing ton after entering the power consumption intelligent automatic running control mode, and calculating the power consumption of the improved air conditioner. And then, calculating the energy-saving benefit of optimizing the running capacity of the air conditioning unit by improving the power consumption of the front air conditioner and the power consumption of the rear air conditioner.
The energy-saving benefit calculation formula is as follows:
E1for improving the power consumption of the front air conditioner, n1 is the number of front operation units, T1RTiTo improve the operation capacity of the pre-ith air conditioner main unit, E1RTiIn order to improve the electricity consumption of the air conditioner host machine of the ith part per refrigerating ton.
E2For improving power consumption of rear air conditioner, n2 is number of rear operation, T2RTiFor improving the rear i-th air conditionerHost running capacity, E2RTiIn order to improve the electricity consumption of the ith air conditioner main machine per refrigerating ton.
E＝((E1-E2)/E1)*100
E is the energy-saving benefit.
In the actual embodiment, when there are 4 air conditioners in operation (operation state (S) ═ ON), the numbers are from 1 to 4, and the temperature (T) of the inflow water of ice water to each air conditioner is collectedwi) And the temperature (T) of the water outletwo) Cooling water inlet temperature (T)ci) And the temperature (T) of the water outletco) And signals such as the running current (I) and the like, judge the full-load running of the air conditioner main machine, calculate more than one average temperature difference of the full-load running, and update the historical data of the average temperature difference of the full-load running. The following air conditioner main unit load rate and power consumption per refrigerating ton (KW/RT) conversion and air conditioner main unit refrigerating capacity are obtained at the same time, and the results are shown in the following tables 1 and 2:
TABLE 1
| Air conditioner main unit | Load factor of air conditioner main unit (%) | Ton power consumption per freezing (KW/RT) |
| 1 | 100 | 0.80 |
| 2 | 75 | 0.70 |
| 3 | 50 | 1.00 |
| 4 | 25 | 1.30 |
TABLE 2
| Air conditioner main unit 1 | Air conditioner |
Air conditioner main unit 3 | Air conditioner main unit 4 |
| Freezing capacity of 50RT | Freezing capacity of 50RT | Freezing capacity of 50RT | Freezing capacity of 100RT |
| S_1＝ON | S_2＝ON | S_3＝ON | S_4＝ON |
The low load rate shutdown mode and the lowest air conditioner main unit number mode are respectively explained as follows:
in the low load rate stop mode, the load rate of the air conditioner main units is calculated first, and the load rates of 4 air conditioner main units are assumed to be obtained (η)iI 1-4) are respectively 50%, 25%, 50% and 20%, and the calculation result, the operation state of the air conditioner main unit and the refrigeration are calculated according to the load rate of the air conditioner main unitCalculating the operation capacity of the air conditioner main unit to obtain the improved operation capacity of the front 4 air conditioner main units (T1)RTiI is 1 to 4) is 25RT, 12.5RT, 25RT and 20RT, respectively. Before entering a low-load-rate shutdown mode, the information is collected to calculate the electricity consumption of the air conditioner before improvement, and E1 is 94.25 KW. After entering the low-load-rate shutdown control mode, the shutdown control condition is assumed to be the load rate air conditioner host less than 50%, so the air conditioner host 2 and the air conditioner host 4 are turned off, and the air conditioner operation capacity with low load rate is transferred to other air conditioner hosts in operation. Analyzing the result of the low load rate shutdown control mode to obtain the improved operation capacity of the 4 air-conditioning main units (T2)RTiI 1 to 4) are 41.25RT, 0RT, 41.25RT and 0RT, respectively, and the air conditioner power consumption after improvement is calculated, E2 is 61.88 KW. Then, by improving the power consumption of the front air conditioner and the power consumption of the rear air conditioner, the energy saving benefit for optimizing the operation capacity of the air conditioning unit is calculated to be E equal to 34%, as shown in the following tables 3 and 4.
Table 3: before low load rate shutdown mode, E1 ═ 94.25KW
| Air conditioner main unit 1 | Air conditioner |
Air conditioner main unit 3 | Air conditioner main unit 4 |
| η1＝50％ | η2＝25％ | η3＝50％ | η4＝20％ |
| T1RT1＝25RT | T1RT2＝12.5RT | T1RT3＝25RT | T1RT4＝20RT |
Table 4: after low load rate shutdown mode, 61.88KW for E1
| Air conditioner main unit 1 | Air conditioner |
Air conditioner main unit 3 | Air conditioner main unit 4 |
| η1＝82.5％ | η2＝0％ | η3＝82.5％ | η4＝0％ |
| T2RT1＝41.25RT | T2RT2＝61.88RT | T2RT3＝41.25RT | T2RT4＝0RT |
In the lowest air conditioner main unit number mode, the air conditioner main unit load rate is calculated first, and the load rates of 4 air conditioner main units are assumed to be obtained (η)iI 1-4) are respectively 50%, 50% and 50%, and the calculation result and the operation of the air conditioner host are calculated according to the load rate of the air conditioner hostThe operation capacity of the air-conditioning main unit is calculated by changing the state and the refrigerating capacity, and the operation capacity of the front 4 air-conditioning main units is improved (T1)RTiI is 1 to 4) is 25RT, 25RT and 50RT, respectively. Before entering a power consumption intelligent automatic operation control mode, collecting the information and calculating to improve the power consumption of the air conditioner, wherein E1 is 125 KW; after entering a control mode of the minimum number of air conditioners meeting the operation capacity, the air conditioner main unit 1 and the air conditioner main unit 2 are closed under the condition of meeting the requirement of the total operation capacity of the air conditioners, so that the air conditioner main unit 3 and the air conditioner main unit 4 are maintained at a high load rate and meet the requirement of the total operation capacity of the air conditioners. Analyzing the result of the control mode with the minimum number of air conditioners meeting the operation capacity to obtain the operation capacity of the 4 air conditioners after improvement (T2)RTiI is 1 to 4) is 0RT, 41.65RT and 83.3RT, respectively, and the improved air conditioner power consumption is calculated, E2 is 93.71 KW. Then, by improving the power consumption of the front air conditioner and the power consumption of the rear air conditioner, the energy saving benefit of optimizing the operation capacity of the air conditioning unit is calculated to be 25%, as shown in the following tables 5 and 6.
Table 5: before low load rate shutdown mode, 125KW when E1 ═ 125KW
| Air conditioner main unit 1 | Air conditioner |
Air conditioner main unit 3 | Air conditioner main unit 4 |
| η1＝50％ | η2＝50％ | η3＝50％ | η4＝50％ |
| T1RT1＝25RT | T1RT2＝25RT | T1RT3＝25RT | T1RT4＝50RT |
Table 6: after low load rate shutdown mode, E1 ═ 93.71KW
| Air conditioner main unit 1 | Air conditioner |
Air conditioner main unit 3 | Air conditioner main unit 4 |
| η1＝0％ | η2＝0％ | η3＝83.3％ | η4＝83.3％ |
| T2RT1＝0RT | T2RT2＝0RT | T2RT3＝41.65RT | T2RT4＝83.3RT |
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. An automatic air conditioning operation capacity adjustment system comprising:
the load rate analysis module is used for calculating the load rate of each air conditioner host according to the ice water inlet temperature, the ice water outlet temperature, the cooling water inlet temperature, the cooling water outlet temperature, the historical full-load operation average temperature difference and the operation current of the plurality of air conditioner hosts;
the operation capacity analysis module is used for calculating the operation capacity of each air conditioner host according to the operation state, the freezing capacity setting and the load rate of each air conditioner host;
the load rate and power consumption conversion module is set according to the operation curve of each air-conditioning host machine and converts the power consumption per refrigerating ton under the load rate corresponding to each air-conditioning host machine;
the operation capacity control module adjusts the operation of each air-conditioning main machine according to the load rate and the operation capacity of each air-conditioning main machine and the power consumption per refrigerating ton;
the energy-saving benefit analysis module is used for calculating the power consumption and the energy-saving benefit of each air-conditioning host; and
the communication and access module is used for providing connection between the load rate analysis module, the operation capacity analysis module, the load rate and power consumption conversion module, the operation capacity control module and the energy-saving benefit analysis module and each air conditioner host;
the operation capacity control module and the energy-saving benefit analysis module calculate the power consumption and the energy-saving benefit of each air-conditioning host corresponding to a plurality of operation modes according to the load rate, the operation capacity and the per-freezing ton power consumption adjustment of each air-conditioning host, and adjust the operation of each air-conditioning host;
the operation modes are a low-load-rate shutdown mode, a minimum air conditioner host machine number mode and a user-defined parameter mode, after the energy-saving benefit analysis module calculates the power consumption and the energy-saving benefit of each operation mode, the operation capacity control module adjusts the operation of each air conditioner host according to the operation mode which accords with the minimum power consumption and the maximum energy-saving benefit.
2. The automatic air conditioner operation capacity adjustment system according to claim 1, wherein the operation curve of each air conditioner main unit is set to a linear function, a multi-time function, or a multi-stage linear function.
3. The automatic air conditioner operation capacity regulating method includes the following steps:
the load rate analysis module is connected with the receiving module through communication and collects ice water inlet temperature, ice water outlet temperature, cooling water inlet temperature, cooling water outlet temperature, historical full-load operation average temperature difference and operation current of the air conditioner hosts, and calculates the load rate of each air conditioner host;
the operation capacity analysis module is connected with the receiving module through communication and collects the operation state, the freezing capacity setting and the load rate of each air conditioner host, and calculates the operation capacity of each air conditioner host; and
the operation capacity control module and the energy-saving benefit analysis module are used for calculating the power consumption and the energy-saving benefit of each air-conditioning host corresponding to a plurality of operation modes according to the load rate, the operation capacity and the power consumption per refrigerating ton of each air-conditioning host, and adjusting the operation of each air-conditioning host;
the operation modes are a low-load-rate shutdown mode, a minimum air conditioner host machine number mode and a user-defined parameter mode, after the energy-saving benefit analysis module calculates the power consumption and the energy-saving benefit of each operation mode, the operation capacity control module adjusts the operation of each air conditioner host according to the operation mode which accords with the minimum power consumption and the maximum energy-saving benefit.
4. The automatic air conditioner operation capacity adjustment method according to claim 3, wherein the low load rate stop mode determines a priority of operation according to a load rate of each of the air conditioner hosts, the air conditioner host with a high load rate is preferentially operated, and the air conditioner host with a low load rate is preferentially stopped.
5. The automatic air conditioning operation capacity adjusting method according to claim 3, wherein the lowest air conditioning main unit number mode is a mode in which the operation is performed with the minimum number of the air conditioning main units in accordance with a total operation capacity after summing up the total operation capacity of the air conditioning main units.
6. The method as claimed in claim 3, wherein the customized parameter pattern determines a priority of operation according to power consumption of each air conditioner main unit, the air conditioner main unit with higher power consumption is preferentially shut down, and the air conditioner main unit with lower power consumption is preferentially operated.
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| CN108571803B (en) * | 2017-03-07 | 2020-06-30 | 佛山市顺德区顺达电脑厂有限公司 | Ice water main machine control method |
| CN111425995A (en) * | 2020-04-03 | 2020-07-17 | 广东美的暖通设备有限公司 | Operation control method, multi-split heat pump air conditioning system and storage medium |
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| TW201800704A (en) | 2018-01-01 |
| CN106440188A (en) | 2017-02-22 |
| TWI604162B (en) | 2017-11-01 |
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