CN115451533A - System and method for calculating and analyzing energy efficiency of centralized air-conditioning refrigeration machine room system - Google Patents
System and method for calculating and analyzing energy efficiency of centralized air-conditioning refrigeration machine room system Download PDFInfo
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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
- F24F11/46—Improving electric energy efficiency or saving
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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
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- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
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- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
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Abstract
The invention discloses a system and a method for calculating and analyzing energy efficiency of a centralized air-conditioning refrigeration machine room system, which belong to the technical field of the centralized air-conditioning refrigeration machine room system and comprise a primary data acquisition end, a primary data processing end, a secondary data acquisition end, a secondary data processing end, a data feedback end and a data output end, wherein the primary data acquisition end acquires a high-efficiency interval of a host, an air-conditioning load and meteorological parameters in 8760 hours all year, and the primary data processing end receives data information of the primary data acquisition end and then calculates and analyzes an optimal operation strategy and energy consumption of a refrigeration host. The whole system forms a closed loop, and a dynamic automatic control process is realized through the processes of adjustment, accurate measurement and readjustment; and (4) rapidly analyzing and comparing the advantages and disadvantages of different configuration schemes on the project to obtain the optimal configuration scheme.
Description
Technical Field
The invention relates to the technical field of a centralized air-conditioning refrigeration machine room system, in particular to a system and a method for calculating and analyzing energy efficiency of the centralized air-conditioning refrigeration machine room system.
Background
The operation of a centralized air-conditioning refrigeration machine room system is not only related to operation management, but also the key point is whether the design of the centralized air-conditioning refrigeration machine room system is reasonable.
The design of the concentrated air-conditioning refrigeration machine room system at present is selected according to the calculated hourly cooling load value of the air-conditioning system, but a plurality of problems are found in the method. Firstly, the system only carries out configuration and model selection according to a calculation result of a hourly cooling load, and under the condition of partial load, the operation energy efficiency of a centralized air-conditioning refrigeration machine room system is low; secondly, under the condition of extremely low load, the centralized air-conditioning refrigeration machine room system cannot meet the use requirement. Therefore, it is not reasonable to assign a centralized air conditioning refrigeration room system that is not configured for selection in conjunction with annual air conditioning load calculation and energy consumption analysis.
The basis for judging the quality of main equipment of the air conditioner at the present stage is the energy efficiency ratio of the national standard working condition and the efficiency of the design working condition. In fact, the central air conditioning system is operated under partial load condition most of the time, so the actual operation energy efficiency of the air conditioning equipment is really significant.
Disclosure of Invention
The invention aims to provide a system and a method for calculating and analyzing the energy efficiency of a centralized air-conditioning refrigeration machine room system, wherein the whole system forms a closed loop, and a dynamic automatic control process is realized through the processes of adjustment, accurate measurement and readjustment; and (3) rapidly analyzing and comparing the advantages and disadvantages of different configuration schemes on the project to obtain an optimal configuration scheme so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a system for calculating and analyzing energy efficiency of a centralized air-conditioning refrigeration machine room system comprises a primary data acquisition end, a primary data processing end, a secondary data acquisition end, a secondary data processing end, a data feedback end and a data output end, wherein the primary data acquisition end acquires a high-efficiency interval of a host, an air-conditioning load and meteorological parameters of 8760 hours all year round, the primary data processing end calculates and analyzes an optimal operation strategy and energy consumption of a refrigeration host after receiving data information of the primary data acquisition end, the secondary data acquisition end acquires a refrigerant efficiency E1, a cold water conveying coefficient E2, a cooling water conveying coefficient E3 and a cooling tower conveying coefficient E4 according to a data basis provided by the primary data processing end, the secondary data processing end calculates an average energy efficiency ratio EERad all year round and compares a calculated value with a preset value and a limit value to judge whether design requirements are met or not, the data feedback end feeds back related equipment performance parameters acquired by the secondary data processing end to the primary data acquisition end, and the data output end outputs data of the primary data processing end and the secondary data processing end.
Further, the secondary data acquisition end is connected with a cold water pump and a cold water system, the cold water pump and the cold water system provide cold water pump performance parameters and cold water system resistance characteristic data, and the cold water pump performance parameters, the cold water system resistance characteristic, the optimal operation strategy of the refrigeration host and the energy consumption data are calculated and analyzed to obtain the operation strategy and the energy consumption of the cold water pump.
Furthermore, the secondary data acquisition end is connected with a cooling water pump and a cooling water system, the cooling water pump and the cooling water system provide performance parameters and resistance characteristic data of the cooling water pump, and the performance parameters, the resistance characteristic of the cooling water system, the optimal operation strategy of the refrigeration host and the energy consumption data of the refrigeration host are calculated and analyzed to obtain the operation strategy and the energy consumption of the cooling water pump.
Furthermore, the secondary data acquisition end is connected with a cooling tower, the cooling tower provides performance parameters of the cooling tower, and the performance parameters of the cooling tower, the optimal operation strategy of the refrigeration host and the energy consumption data are calculated and analyzed to obtain the operation strategy and the energy consumption of the cooling tower.
Further, the data feedback end feeds the EERad to the cooling pump, the cooling water pump and the cooling tower.
According to another aspect of the invention, a system calculation and analysis method for centralized energy efficiency calculation and analysis of an air conditioner refrigeration room system is provided, which comprises the following steps:
s101: calculating or setting a host high-efficiency interval according to a refrigeration host full-working-condition performance parameter table, and uploading air conditioning load and meteorological data for 8760 hours all year round;
s102: according to the air conditioning load requirement of 8760 hours all the year round in the project, according to the energy efficiency conditions of the configured water chilling unit under different conditions, automatically calculating the optimal starting strategy of the water chilling unit, calculating the real-time simulated energy consumption data of the water chilling unit, and storing the data in a database;
s103: acquiring performance parameters of a cold water pump, resistance characteristics of a cold water system, performance parameters of a cooling water pump, resistance characteristics of a cooling water system and combined cooling tower performance parameters;
s104: calculating and analyzing operation strategies and energy consumption of a cold water pump, a cooling water pump and a cooling tower, and obtaining a refrigerant efficiency E1, a cold water conveying coefficient E2, a cooling water conveying coefficient E3 and a cooling tower conveying coefficient E4;
s105: calculating the annual average energy efficiency ratio of the centralized air-conditioning refrigeration machine room system and the itemized average energy efficiency ratio of each main device according to the project air-conditioning load requirement, the simulated optimal operation load of the water chilling unit and the configured performance parameters of the cold water pump, the cooling water pump and the cooling tower;
s106: through the calculation, the energy efficiency condition of each main device can be analyzed, whether the device type selection is reasonable or not is judged, the performance parameters of the related devices are adjusted, and the energy efficiency ratio of the centralized air-conditioning refrigeration machine room system is optimized;
s107: in the same project, the optimal configuration scheme is obtained through rapid calculation and analysis of performance parameters of different water chilling units, cold water pumps, cooling water pumps and cooling towers.
Further, in step S106, the all-condition performance parameters of the refrigeration host, the cold water pump performance parameters, the water-cooling water pump performance parameters and the cooling tower performance parameters are adjusted according to the refrigerant efficiency E1, the cold water delivery coefficient E2, the cooling water delivery coefficient E3 and the cooling tower delivery coefficient E4.
Compared with the prior art, the invention has the beneficial effects that: according to the system and the method for calculating and analyzing the energy efficiency of the centralized air-conditioning refrigeration machine room system, the whole system forms a closed loop, and a dynamic automatic control process is realized through the processes of adjustment, accurate measurement and readjustment; establishing an air conditioner load model for simulating actual running conditions all year round (8760 hours); the performance parameters of the main equipment under all working conditions (different water temperatures and different load ratios) are collated; the hydraulic change characteristic calculation basis of the system is summarized and corrected according to the actual situation; according to the periodic annual load, calculating the operation strategy of the main equipment of the system in the safest, most stable and most energy-saving mode; the barrier between the self-control specialty and the heating and ventilation specialty is broken through, and an energy-saving operation strategy with data support is provided; determining an energy efficiency target of a central air-conditioning refrigeration machine room system; index parameters such as the subentry average energy efficiency ratio of main equipment, annual cold consumption quantity of a refrigeration machine room system, annual power consumption, unit area cold consumption cost and the like are calculated, and the high-efficiency operation of an air conditioning system is ensured in a design stage; and the advantages and the disadvantages of different configuration schemes on projects are quickly analyzed and compared.
Drawings
FIG. 1 is an overall structural diagram of a system for calculating and analyzing energy efficiency of a centralized air-conditioning refrigeration machine room system according to the present invention;
FIG. 2 is a system architecture diagram of energy efficiency calculation and analysis for a central air conditioning refrigeration room system of the present invention;
FIG. 3 is a flow chart of a method for a system for energy efficiency calculation and analysis of a central air conditioning refrigeration room system of the present invention;
fig. 4 is another flow chart of the method of the energy efficiency calculation and analysis system of the central air conditioning refrigeration machine room system according to the invention.
In the figure: 1. a primary data acquisition end; 2. a primary data processing end; 3. a secondary data acquisition end; 4. a secondary data processing end; 5. a data feedback end; 6. and a data output end.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a system for calculating and analyzing energy efficiency of a centralized air-conditioning refrigeration machine room system comprises a primary data acquisition end 1, a primary data processing end 2, a secondary data acquisition end 3, a secondary data processing end 4, a data feedback end 5 and a data output end 6, wherein the primary data acquisition end 1 acquires a high-efficiency interval of a host, an air-conditioning load and meteorological parameters of 8760 hours all year around, the primary data processing end 2 receives data information of the primary data acquisition end 1 and then calculates and analyzes an optimal operation strategy and energy consumption of the refrigeration host, the secondary data acquisition end 3 acquires a refrigerant efficiency E1, a cold water conveying coefficient E2, a cooling water conveying coefficient E3 and a cooling tower conveying coefficient E4 according to a data basis provided by the primary data processing end 2, the secondary data processing end 4 calculates an average energy efficiency ratio EERad all year around and compares the energy efficiency with a preset value and a limit value to judge whether a design requirement is met or not, the data feedback end 5 feeds related equipment performance parameters acquired by the secondary data processing end 4 back to the primary data acquisition end 1, the data output end 6 outputs data of the primary data processing end 2 and the secondary data processing end 4, the energy efficiency is compared with the energy efficiency of the air-conditioning refrigeration machine room system, and the centralized air-conditioning refrigeration machine room system to calculate the energy-saving control calculation value of more than about 30.5; the cold unit price is controlled within 0.20 yuan/KWh, and is reduced by more than 50% compared with the market cold unit price, so that the average energy efficiency of the refrigeration machine room with different schemes is calculated quickly and accurately, the advantages and the disadvantages of the schemes are analyzed, and related suggestions such as optimized configuration are provided; the secondary data acquisition end 3 is connected with a cold water pump and a cold water system, the cold water pump and the cold water system provide cold water pump performance parameters and cold water system resistance characteristic data, and the cold water pump performance parameters, the cold water system resistance characteristic, the optimal operation strategy of the refrigeration host and the energy consumption data are calculated and analyzed to obtain the operation strategy and the energy consumption of the cold water pump; the secondary data acquisition end 3 is connected with a cooling water pump and a cooling water system, the cooling water pump and the cooling water system provide performance parameters and resistance characteristic data of the cooling water pump, and the performance parameters, the resistance characteristic of the cooling water system, the optimal operation strategy of the refrigeration host and the energy consumption data of the refrigeration host are calculated and analyzed to obtain the operation strategy and the energy consumption of the cooling water pump; the secondary data acquisition end 3 is connected with a cooling tower, the cooling tower provides performance parameters of the cooling tower, and the performance parameters of the cooling tower, the optimal operation strategy of a refrigeration host and energy consumption data are calculated and analyzed to obtain the operation strategy and energy consumption of the cooling tower; the data feedback end 5 feeds the EERad of the annual average energy efficiency ratio of the computing system back to the cooling pump, the cooling water pump and the cooling tower, and the data output by the data output end 6 are respectively EERad, E1, E2, E3 and E4; the annual and effective analysis chart: a monthly average system energy efficiency curve, a monthly cooling total amount and electricity total amount histogram; the system comprises a total cold consumption and total electricity consumption statistical table for annual and monthly systems, a total electricity consumption statistical table for annual and monthly refrigeration hosts, a cold water pump, a cooling water pump and a cooling tower, a sum of annual cumulative cold consumption Qad and annual cumulative electricity consumption Wyd, a cold consumption unit Cost and a relative energy saving ratio Save.
In order to better show the process of the system for calculating and analyzing the energy efficiency of the centralized air-conditioning refrigeration machine room system, the embodiment provides a method for calculating and analyzing the energy efficiency of the centralized air-conditioning refrigeration machine room system, which includes the following steps:
s101: calculating or setting a host high-efficiency interval according to a refrigeration host full-working-condition performance parameter table, and uploading air conditioning load and meteorological data for 8760 hours all year round; establishing an air conditioner load model for simulating actual operation conditions, such as annual meteorological parameters, maintenance structures, personnel density, fresh air volume, equipment load, use conditions in different time intervals and the like, wherein the refrigeration host provides energy efficiency ratios under the conditions of different cooling water temperatures and different load rates under all working conditions, and the optimal operation strategy and energy consumption of the refrigeration host are calculated and analyzed by calculating or setting a host high-efficiency interval; correspondingly distributing corresponding transmission and distribution equipment cold water pumps, cooling water pumps and cooling towers according to the operation strategy of the host, calculating the resistance characteristic of the system in real time according to the load rate of the system, calculating and analyzing the operation strategy and energy consumption of each main equipment cold water pump, cooling water pump and cooling tower by combining the performance parameters of the transmission and distribution equipment cold water pumps, cooling water pumps and cooling towers, summarizing and counting the energy efficiency ratios of the main equipment cold water pumps, cooling water pumps and cooling towers, and finally calculating the annual average energy efficiency ratio EERad of the system;
s102: according to the air conditioning load requirement of 8760 hours all the year round in the project, according to the energy efficiency conditions of the configured water chilling unit under different conditions, automatically calculating the optimal starting strategy of the water chilling unit, calculating the real-time simulated energy consumption data of the water chilling unit, and storing the data in a database; calculating and extracting year-round 8760 hour load data; carrying out refined hydraulic calculation, collecting and sorting energy efficiency databases of main equipment under the conditions of all working conditions, different water temperatures and different load ratios, configuring corresponding refrigeration hosts, cold water pumps, cooling water pumps and cooling towers according to the 8760-hour air-conditioning load requirement and the resistance performance characteristics of an air-conditioning water system of the project all year round, and calculating the annual average energy efficiency ratio EERad of the system through inputting the information and the performance parameters of the main air-conditioning equipment;
s103: acquiring performance parameters of a cold water pump, resistance characteristics of a cold water system, performance parameters of a cooling water pump, resistance characteristics of a cooling water system and combined cooling tower performance parameters;
s104: calculating and analyzing operation strategies and energy consumption of a cold water pump, a cooling water pump and a cooling tower, and obtaining a refrigerant efficiency E1, a cold water conveying coefficient E2, a cooling water conveying coefficient E3 and a cooling tower conveying coefficient E4;
s105: calculating the annual average energy efficiency ratio of the centralized air-conditioning refrigeration machine room system and the itemized average energy efficiency ratio of each main device according to the project air-conditioning load requirement, the simulated optimal operation load of the water chilling unit and the configured performance parameters of the cold water pump, the cooling water pump and the cooling tower;
s106: through the calculation, the energy efficiency condition of each main device can be analyzed, whether the device type selection is reasonable or not is judged, the performance parameters of the related devices are adjusted, and the energy efficiency ratio of the centralized air-conditioning refrigeration machine room system is optimized; adjusting the full-working-condition performance parameters of a refrigeration host, the performance parameters of a cold water pump, the performance parameters of a water cooling pump and the performance parameters of a cooling tower according to the efficiency E1 of a refrigerant, the cold water conveying coefficient E2, the cooling water conveying coefficient E3 and the cooling tower conveying coefficient E4, analyzing the energy efficiency conditions of different configuration schemes used in projects, comparing the advantages and the disadvantages of the schemes through calculating result data, and providing visual and definite data analysis for determining the use of relevant equipment;
s107: in the same project, an optimal configuration scheme is obtained through rapid calculation and analysis of performance parameters of different water chilling units, water chilling pumps, cooling water pumps and cooling towers, parameter indexes such as annual average energy efficiency and power consumption of the project are calculated, specific and comprehensive data bases are provided for equipment purchase, the energy efficiency target of the centralized air-conditioning refrigeration machine room system is determined, theoretical calculation formulas and bases of hydraulic change characteristics of the system are summarized, and corresponding correction is carried out according to actual conditions; according to the annual periodical simulation load demand and equipment performance parameters, calculating according to the lowest energy consumption and selecting an optimal starting strategy, and providing theoretical support for the project most energy-saving operation strategy; getting through the barrier between the automatic control specialty and the heating and ventilation specialty, and providing a truly feasible energy-saving operation strategy aiming at the project; determining an energy efficiency target of a central air-conditioning refrigeration machine room system, and calculating annual cold consumption quantity, annual power consumption quantity, unit area cold consumption cost and the like of the refrigeration machine room system; the energy efficiency conditions of systems and main equipment of different schemes used in the project are analyzed, the energy efficiency of each scheme is rapidly and accurately calculated, the advantages and the disadvantages of each scheme are analyzed, and related suggestions such as optimized configuration and the like can be provided.
In summary, the following steps: according to the system and the method for calculating and analyzing the energy efficiency of the centralized air-conditioning refrigeration machine room system, the whole system forms a closed loop, and a dynamic automatic control process is realized through the processes of adjustment, accurate measurement and readjustment; establishing an air conditioner load model for simulating actual operation conditions within 8760 hours all year round; finishing performance parameters of main equipment under the conditions of all working conditions, different water temperatures and different load rates; the hydraulic change characteristic calculation basis of the system is arranged and summarized, and correction is carried out according to actual conditions; according to the periodic annual load, calculating the operation strategy of the main equipment of the system in the safest, most stable and most energy-saving mode; the barrier between the self-control specialty and the heating and ventilation specialty is broken through, and an energy-saving operation strategy with data support is provided; determining an energy efficiency target of a centralized air conditioner refrigeration machine room system; index parameters such as the subentry average energy efficiency ratio of the main equipment, the annual cold consumption quantity of a refrigeration machine room system, the annual power consumption quantity, the unit area cold consumption cost and the like are calculated, and the high-efficiency operation of the air conditioning system is ensured in the design stage; and rapidly analyzing and comparing the advantages and disadvantages of different configuration schemes on projects.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. The system is characterized by comprising a primary data acquisition end (1), a primary data processing end (2), a secondary data acquisition end (3), a secondary data processing end (4), a data feedback end (5) and a data output end (6), wherein the primary data acquisition end (1) acquires a high-efficiency interval of a host, an air conditioning load and meteorological parameters in 8760 hours all year round, the primary data processing end (2) receives data information of the primary data acquisition end (1) and then calculates and analyzes an optimal operation strategy and energy consumption of the refrigeration host, the secondary data acquisition end (3) acquires refrigerant efficiency E1, a cold water conveying coefficient E2, a cooling water conveying coefficient E3 and a cooling tower conveying coefficient E4 according to a data base provided by the primary data processing end (2), the secondary data processing end (4) calculates an energy efficiency ratio EERad all year round and compares the calculated value with a preset value and a limit value to judge whether design requirements are met, and the data feedback end (5) feeds back related performance parameters acquired by the secondary data processing end (4) to the primary data acquisition end (1), and the secondary data processing end (6) outputs data of the secondary data (2) and the secondary data output end (6).
2. The system for calculating and analyzing the energy efficiency of the centralized air-conditioning refrigeration machine room system according to claim 1, wherein the secondary data acquisition terminal (3) is connected with a cold water pump and a cold water system, the cold water pump and the cold water system provide cold water pump performance parameters and cold water system resistance characteristic data, and the cold water pump performance parameters, the cold water system resistance characteristic, the optimal operation strategy of the refrigeration host and the energy consumption data are calculated and analyzed to obtain the operation strategy and the energy consumption of the cold water pump.
3. The system for calculating and analyzing the energy efficiency of the centralized air-conditioning refrigeration machine room system according to claim 1, wherein the secondary data acquisition terminal (3) is connected with a cooling water pump and a cooling water system, the cooling water pump and the cooling water system provide data of performance parameters and resistance characteristics of the cooling water pump, and the performance parameters, the resistance characteristics of the cooling water system, optimal operation strategies of the refrigeration host and energy consumption data are calculated and analyzed to obtain the operation strategies and energy consumption of the cooling water pump.
4. The system for calculating and analyzing the energy efficiency of the central air-conditioning refrigeration machine room system according to claim 1, wherein the secondary data acquisition terminal (3) is connected with a cooling tower, the cooling tower provides cooling tower performance parameters, and the cooling tower performance parameters, the optimal operation strategy of the refrigeration host and the energy consumption data are calculated and analyzed to obtain the operation strategy and the energy consumption of the cooling tower.
5. The system for energy efficiency calculation and analysis of a central air conditioning and refrigeration machine room system according to claim 1, characterized in that the data feedback terminal (5) feeds back the yearly average energy efficiency ratio EERad of the calculation system to the cooling pump, the cooling water pump and the cooling tower.
6. A method for system calculation and analysis of energy efficiency calculation and analysis for a central air conditioning refrigeration room system according to claim 1, comprising the steps of:
s101: calculating or setting a host high-efficiency interval according to a refrigeration host full-working-condition performance parameter table, and uploading air conditioning load and meteorological data for 8760 hours all year round;
s102: according to the air conditioning load requirement of 8760 hours all the year round in the project, according to the energy efficiency conditions of the configured water chilling unit under different conditions, automatically calculating the optimal starting strategy of the water chilling unit, calculating the real-time simulated energy consumption data of the water chilling unit, and storing the data in a database;
s103: acquiring performance parameters of a cold water pump, resistance characteristics of a cold water system, performance parameters of a cooling water pump, resistance characteristics of a cooling water system and combined cooling tower;
s104: calculating and analyzing operation strategies and energy consumption of a cold water pump, a cooling water pump and a cooling tower, and obtaining refrigerant efficiency E1, a cold water conveying coefficient E2, a cooling water conveying coefficient E3 and a cooling tower conveying coefficient E4;
s105: calculating the annual average energy efficiency ratio of the centralized air-conditioning refrigeration machine room system and the itemized average energy efficiency ratio of each main device according to the project air-conditioning load requirement, the simulated optimal operation load of the water chilling unit and the configured performance parameters of the cold water pump, the cooling water pump and the cooling tower;
s106: through the calculation, the energy efficiency condition of each main device can be analyzed, whether the device type selection is reasonable or not is judged, the performance parameters of the related devices are adjusted, and the energy efficiency ratio of the centralized air-conditioning refrigeration machine room system is optimized;
s107: in the same project, the optimal configuration scheme is obtained through rapid calculation and analysis of performance parameters of different water chilling units, cold water pumps, cooling water pumps and cooling towers.
7. The method for system calculation and analysis of energy efficiency calculation and analysis of a centralized air conditioning refrigeration machine room system according to claim 6, wherein in S106, the full-operating-condition performance parameters of the refrigeration host, the performance parameters of the cold water pump, the performance parameters of the water-cooled water pump and the performance parameters of the cooling tower are adjusted according to the refrigerant efficiency E1, the cold water delivery coefficient E2, the cooling water delivery coefficient E3 and the cooling tower delivery coefficient E4.
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| CN116678082A (en) * | 2023-06-05 | 2023-09-01 | 耀昶嵘相变材料科技(广东)有限公司 | Control method and terminal of central air conditioning system and central air conditioning system |
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| CN116678082A (en) * | 2023-06-05 | 2023-09-01 | 耀昶嵘相变材料科技(广东)有限公司 | Control method and terminal of central air conditioning system and central air conditioning system |
| CN116678082B (en) * | 2023-06-05 | 2024-05-03 | 耀昶嵘相变材料科技(广东)有限公司 | Control method and terminal of central air conditioning system and central air conditioning system |
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