CN114440403A - Control method, system, equipment and medium of air conditioning system - Google Patents
Control method, system, equipment and medium of air conditioning system Download PDFInfo
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- CN114440403A CN114440403A CN202210047337.2A CN202210047337A CN114440403A CN 114440403 A CN114440403 A CN 114440403A CN 202210047337 A CN202210047337 A CN 202210047337A CN 114440403 A CN114440403 A CN 114440403A
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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
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
Abstract
The invention provides a control method, a system, equipment and a medium of an air conditioning system, wherein the method comprises the following steps: acquiring operation data of operating equipment in the air conditioning system and the type of a building in which the air conditioning system operates; determining an initial energy efficiency coefficient and an initial energy consumption coefficient of the air conditioning system according to the operation data; determining a corresponding target energy efficiency evaluation index and a target energy consumption intensity index according to the building type and a preset index database; comparing the target energy efficiency evaluation index with the initial energy efficiency coefficient to obtain a first evaluation result; comparing the target energy consumption intensity index with the initial energy consumption coefficient to obtain a second evaluation result; and adjusting the index of the air conditioning system according to the first evaluation result and the second evaluation result. By the method, the operation of the air conditioning system is limited by the energy efficiency coefficient and the energy consumption intensity, the operation index of the air conditioning system is matched with the corresponding building type, the operation of the air conditioning system is more reasonable, the energy efficiency level of the air conditioning system can be improved, and the energy consumption intensity can be reduced.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method, a control system, control equipment and a control medium of an air conditioning system.
Background
In the related art, the air conditioning system consumes a large amount of energy while providing a healthy and comfortable indoor environment to the user. According to statistics, the energy consumption of the air conditioning system accounts for about 30% -50% of the total energy consumption of the public building, wherein the energy consumption of the air conditioning cold source system accounts for more than 50% of the energy consumption of the central air conditioner, the energy consumption of the air conditioning system at the operation stage accounts for about 80% of the energy consumption of the whole life cycle, and the energy saving and consumption reduction obviously become a big matter related to the nation and people. However, in the related art, in the operation process of the air conditioning system, the air conditioning system does not operate according to the target operation index matched with the corresponding building type, so that the energy efficiency level of the air conditioning system is low.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a control method, a control system, equipment and a control medium of an air conditioning system, which can improve the energy efficiency level of the air conditioning system and reduce the energy consumption intensity of the air conditioning system.
A control method of an air conditioning system according to an embodiment of a first aspect of the present invention includes:
acquiring operation data of operating equipment in an air conditioning system and a building type of the air conditioning system;
determining an initial energy efficiency coefficient and an initial energy consumption coefficient of the air conditioning system according to the operation data;
determining a corresponding target energy efficiency evaluation index and a target energy consumption intensity index according to the building type and a preset index database, wherein the preset index database comprises: matching information of the building type, the target energy efficiency evaluation index and the target energy consumption intensity index;
comparing the target energy efficiency evaluation index with the initial energy efficiency coefficient to obtain a first evaluation result;
comparing the target energy consumption intensity index with the initial energy consumption coefficient to obtain a second evaluation result;
and adjusting the operation index of the air conditioning system according to the first evaluation result and the second evaluation result.
The control method of the air conditioning system provided by the embodiment of the invention at least has the following beneficial effects: the operation index of the air conditioning system is adjusted according to the first evaluation result and the second evaluation result, so that the operation of the air conditioning system is limited by the energy efficiency coefficient and the energy consumption intensity, the building type is also considered by the target energy efficiency evaluation index and the target energy consumption intensity index, the operation index of the air conditioning system is matched with the corresponding building type, the operation of the air conditioning system is more reasonable, the energy efficiency level of the air conditioning system can be improved, and the energy consumption intensity of the air conditioning system can be reduced.
According to some embodiments of the invention, further comprising:
determining a cold load ratio according to the operation data, wherein the cold load ratio is the ratio of the installation capacity of the operation equipment of the air conditioning system to the annual peak load of the operation equipment;
determining a corresponding preset cold load threshold according to the building type and a preset ratio database, wherein the preset ratio database comprises: matching information of the building type and the preset cold load threshold;
obtaining a third evaluation result according to the comparison between the cold load ratio and the preset cold load threshold;
and adjusting the target installation capacity of the running equipment according to the third evaluation result.
According to some embodiments of the invention, the operation index comprises: the operation energy efficiency evaluation index and the operation energy consumption intensity index comprise any one of the following indexes: a special effect energy efficiency index, a first-level energy efficiency index, a second-level energy efficiency index and a third-level energy efficiency index; the operation energy consumption intensity indexes comprise: energy saving of energy consumption.
According to some embodiments of the invention, the adjusting the operation index of the air conditioning system according to the first evaluation result and the second evaluation result comprises:
if the first evaluation result is that the initial energy efficiency coefficient is smaller than the target energy efficiency evaluation index, and if the second evaluation result is that the initial energy consumption coefficient is smaller than the target energy consumption intensity index, improving the operation energy efficiency evaluation index of the air-conditioning system to the target energy efficiency evaluation index;
if the first evaluation result is that the initial energy efficiency coefficient is smaller than the target energy efficiency evaluation index, and if the second evaluation result is that the initial energy consumption coefficient is not smaller than the target energy consumption intensity index, improving the operating energy efficiency evaluation index of the air-conditioning system to the target energy efficiency evaluation index, and reducing the operating energy consumption intensity index of the air-conditioning system to the target energy consumption intensity index;
and if the first evaluation result is that the initial energy efficiency coefficient is not less than the target energy efficiency evaluation index, and if the second evaluation result is that the initial energy consumption coefficient is not less than the target energy consumption intensity index, reducing the operation energy consumption intensity index of the air conditioning system to the target energy consumption intensity index.
According to some embodiments of the invention, the target energy efficiency evaluation index comprises an energy efficiency limit value, the target energy consumption intensity index comprises an energy consumption constraint value, and the method further comprises:
if the initial energy efficiency coefficient is smaller than the energy efficiency limit value or if the initial energy consumption coefficient is larger than the energy consumption constraint value, outputting prompt information, wherein the prompt information is used for prompting the replacement of running equipment in the air conditioning system.
According to some embodiments of the invention, further comprising:
and adjusting the running equipment of the air conditioning system to be drag reduction type equipment according to the third evaluation result.
According to some embodiments of the invention, the operational data comprises: the energy consumption of the water chilling unit, the energy consumption of the freezing water pump, the energy consumption of the cooling tower, the total cooling capacity of the host and the total control area of the air conditioning system are controlled; determining an initial energy efficiency coefficient and an initial energy consumption coefficient of the air conditioning system according to the operation data comprises the following steps:
determining the initial energy efficiency coefficient according to the ratio of the total cooling capacity of the host to the total energy consumption, wherein the total energy consumption is the sum of the energy consumption of the water chilling unit, the energy consumption of the freezing water pump, the energy consumption of the cooling water pump and the energy consumption of the cooling tower;
and determining the initial energy consumption coefficient according to the ratio of the total energy consumption to the total control area of the air conditioning system.
An air conditioning system according to an embodiment of a second aspect of the present invention includes:
the system comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for acquiring the operation data of operating equipment in an air conditioning system and the type of a building in which the air conditioning system operates;
the coefficient determining module is used for determining an initial energy efficiency coefficient and an initial energy consumption coefficient of the air conditioning system according to the operation data;
an index determination module, configured to determine a corresponding target energy efficiency evaluation index and a target energy consumption intensity index according to the building type and a preset index database, where the preset index database includes: matching information of the building type, the target energy efficiency evaluation index and the target energy consumption intensity index;
the first evaluation module is used for comparing the target energy efficiency evaluation index with the initial energy efficiency coefficient to obtain a first evaluation result;
the second evaluation module is used for comparing the target energy consumption intensity index with the initial energy consumption coefficient to obtain a second evaluation result;
and the control module is used for adjusting the operation index of the air conditioning system according to the first evaluation result and the second evaluation result.
The air conditioning system provided by the embodiment of the invention at least has the following beneficial effects: the operation index of the air conditioning system is adjusted according to the first evaluation result and the second evaluation result, so that the operation of the air conditioning system is limited by the energy efficiency coefficient and the energy consumption intensity, the building type is also considered by the target energy efficiency evaluation index and the target energy consumption intensity index, the operation index of the air conditioning system is matched with the corresponding building type, the operation of the air conditioning system is more reasonable, the energy efficiency level of the air conditioning system can be improved, and the energy consumption intensity of the air conditioning system can be reduced.
A computer device according to an embodiment of the third aspect of the present invention comprises a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method according to any one of the embodiments of the first aspect of the present invention when executing the computer program.
A storage medium according to an embodiment of the fourth aspect of the invention is a computer-readable storage medium storing computer-executable instructions for performing the method according to any one of the embodiments of the first aspect of the invention.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
fig. 1 is a schematic system architecture diagram of an air conditioning system according to an embodiment of the present invention;
fig. 2 is an overall flowchart of a control method of an air conditioning system according to an embodiment of the present invention;
fig. 3 is another flowchart of a control method of an air conditioning system according to an embodiment of the present invention;
fig. 4 is another flowchart of a control method of an air conditioning system according to an embodiment of the present invention;
fig. 5 is another flowchart of a control method of an air conditioning system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In recent years, air conditioning systems consume a large amount of energy while providing users with a healthy and comfortable indoor environment. According to statistics, the energy consumption of the air conditioning system accounts for about 30% -50% of the total energy consumption of the public building, wherein the energy consumption of the air conditioning cold source system accounts for more than 50% of the energy consumption of the central air conditioner, and the energy consumption of the air conditioning system in the operation stage accounts for about 80% of the energy consumption of the whole life cycle. The energy saving and consumption reduction of the air conditioning system obviously become a big matter of the national civilization. However, the air conditioning system in the related art mainly has the following problems:
1. in the design stage, the air conditioning system is too large in model selection, the phenomenon of large carriage pulling is common, the resistance of a system transmission and distribution pipe network and valves is not optimized, the resistance is large, and energy consumption waste is caused;
2. in the operation stage, the operation energy efficiency ratio EER of the refrigeration machine room is mostly not more than 3.0, and the energy efficiency level is low; the installed air conditioner automatic control system only runs well by less than 20 percent;
3. in the evaluation stage, manual offline field testing is often relied on, the labor cost is high, and the energy consumption intensity level is mostly not considered in evaluation indexes.
Based on the above, the embodiments of the present invention provide a method, a system, a device, and a medium for controlling an air conditioning system, which can solve the problems of low energy efficiency level of the air conditioning system, reduce the energy consumption intensity of the air conditioning system, and achieve the purposes of energy saving and carbon reduction.
A software and hardware main body of an implementation environment of a control method of an air conditioning system mainly comprises an operation terminal and a server, wherein the operation terminal is in communication connection with the server. The control method of the air conditioning system may be configured to be executed by the operation terminal alone, or may be configured to be executed by the server alone, or may be executed based on interaction between the operation terminal and the server, which may be selected appropriately according to actual application conditions, and this embodiment is not limited in this respect. In addition, the operation terminal and the server may be nodes in a block chain, which is not particularly limited in this embodiment.
Specifically, the operation terminal in the present invention may include, but is not limited to, any one or more of a smart watch, a smart phone, a computer, a Personal Digital Assistant (PDA), an intelligent voice interaction device, an intelligent appliance, or a vehicle-mounted terminal. The server may be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server providing basic cloud computing services such as a cloud service, a cloud database, cloud computing, a cloud function, cloud storage, a Network service, cloud communication, a middleware service, a domain name service, a security service, a CDN (Content Delivery Network), a big data and artificial intelligence platform, and the like. The operation terminal and the server may establish a communication connection through a wireless Network or a wired Network, the wireless Network or the wired Network uses a standard communication technology and/or protocol, the Network may be set as the internet, and may also be any other Network, for example, but not limited to, any combination of a Local Area Network (LAN), a Metropolitan Area Network (MAN), a Wide Area Network (WAN), a mobile, wired, or wireless Network, a private Network, or a virtual private Network.
Before explaining a control method of an air conditioning system provided in an embodiment of the present invention, a system architecture and an application principle of the air conditioning system in the present invention are first described.
Referring to fig. 1, fig. 1 is a schematic system architecture diagram of an air conditioning system according to the present invention, where the air conditioning system includes an equipment layer, a sensing layer, a control layer, a network layer, and an application layer.
Equipment layer: the device refers to a water chilling unit, a water pump, a cooling tower, a water pipe, a filter, a check valve, a elbow and the like of an air conditioning system installed on site.
A sensing layer: the energy consumption metering device, the sensor, the actuator and the like are installed on site for acquiring instantaneous operation parameters and accumulated indexes of an air conditioning system and equipment on site in real time, and comprise an intelligent ammeter, a cold meter, a temperature sensor, a differential pressure sensor, a humidity sensor, a frequency converter, an electric valve and the like.
A control layer: in order to realize the optimal control of the air conditioning system, the optimal control cabinet of the air conditioning system installed on the spot comprises a water chilling unit control cabinet, a chilled water pump control cabinet, a cooling tower control cabinet and a cold source system optimal control cabinet.
Network layer: in order to receive, temporarily store and forward data, the device is arranged on a network Server (SD), a wireless network sensor node and the like on site. The network server communicates with the application layer through the ethernet, and the communication with the control layer is divided into two modes, namely wired internet and wireless GRPS.
An application layer: the core of the system is an air conditioning system monitoring center, and a building owner can log in the monitoring center anytime and anywhere through client software of a B/S structure or a browser to remotely monitor the optimized operation, statistical analysis and evaluation operation effect of the air conditioning system in real time or on site.
Fig. 2 is a flowchart of a control method of an air conditioning system according to an embodiment of the present invention, where an execution subject of the method may be at least one of an operation terminal or a server, and referring to fig. 2, the control method of the air conditioning system includes, but is not limited to, steps S110 to S160.
Step S110, acquiring operation data of operation equipment in the air conditioning system and the type of a building in which the air conditioning system operates;
step S120, determining an initial energy efficiency coefficient and an initial energy consumption coefficient of the air conditioning system according to the operation data;
step S130, determining a corresponding target energy efficiency evaluation index and a target energy consumption intensity index according to the building type and a preset index database, wherein the preset index database comprises: matching information of building type, target energy efficiency evaluation index and target energy consumption intensity index;
step S140, comparing the target energy efficiency evaluation index with the initial energy efficiency coefficient to obtain a first evaluation result;
step S150, comparing the target energy consumption intensity index with the initial energy consumption coefficient to obtain a second evaluation result;
and step S160, adjusting the operation index of the air conditioning system according to the first evaluation result and the second evaluation result.
In step S110, the operation data includes real-time operation data and historical operation data, wherein in the embodiment of the present invention, the actual operation scenario of the air conditioning system, i.e. the building type, is also considered. The operation requirements of different building types on the air conditioning system are different, but in the related art, the operation of the air conditioning system is often not matched with the building type, so that the air conditioning system is not operated in the optimal working condition.
It should be noted that the types of buildings include office buildings, shopping mall buildings, medical and health buildings, school buildings, hotel buildings, and the like.
In step S120, an initial energy efficiency coefficient and an initial energy consumption coefficient of the air conditioning system are determined according to the operation data. In the related art, only the energy efficiency coefficient is often focused on the evaluation of the air conditioning system. In practice, however, the difference in building type has a significant effect on the operating conditions of the air conditioning system. However, the energy efficiency coefficient cannot indicate the influence of different building types on the air conditioning system, so that not only the energy efficiency coefficient but also the energy consumption coefficient need to be considered in the embodiment of the invention. The energy consumption coefficient can distinguish different building types. Referring to table 1, energy efficiency evaluation indexes of different building types are not greatly different, but energy consumption intensity indexes are greatly different.
TABLE 1
In step S130, a corresponding target energy efficiency evaluation index and a target energy consumption intensity index are determined according to the building type and a preset index database, where the preset index database includes: matching information of building type, target energy efficiency evaluation index and target energy consumption intensity index; referring to Table 1, in the case of office buildings, the target energy consumption intensity index is 60kWh/m2The target energy efficiency evaluation index may be 5.0.
In steps S140 to S160, on one hand, a first evaluation result is obtained by using the initial energy efficiency coefficient and the target energy efficiency coefficient evaluation index of the air conditioning system, and a second evaluation result is obtained by using the target energy consumption intensity index and the initial energy consumption coefficient, and based on the first evaluation result and the second evaluation result, the evaluation index can more comprehensively reflect the operation effect of the air conditioning system, so as to improve the science and accuracy of the evaluation of the operation effect of the air conditioning system, and on the other hand, the air conditioning system is adjusted according to the evaluation result, so that the adjusted operation index is more reasonable, the energy saving efficiency of the air conditioning system is improved, and convenience is provided for energy saving debugging, diagnosis and supervision of the air conditioning system.
Specifically, the operation index of the air conditioning system is adjusted according to the first evaluation result and the second evaluation result, so that the operation of the air conditioning system is limited by the energy efficiency coefficient and the energy consumption intensity, the building type is also considered by the target energy efficiency evaluation index and the target energy consumption intensity index, the operation index of the air conditioning system is matched with the corresponding building type, the operation of the air conditioning system is more reasonable, the energy efficiency level of the air conditioning system can be improved, and the energy consumption intensity of the air conditioning system can be reduced.
In an embodiment, referring to fig. 3, the control method of the air conditioning system further includes, but is not limited to, step S210 to step S240.
Step S210, determining a cold load ratio according to the operation data, wherein the cold load ratio is the ratio of the installation capacity of the operation equipment of the air conditioning system to the annual peak load of the operation equipment;
step S220, determining a corresponding preset cold load threshold according to the building type and a preset ratio database, wherein the preset ratio database comprises: matching information of the building type and a preset cold load threshold;
step S230, obtaining a third evaluation result according to the comparison of the cold load ratio and a preset cold load threshold;
and step S240, adjusting the target installation capacity of the running equipment according to the third evaluation result.
Specifically, in the air conditioning system, not to say, the number of operating devices is increased, and the corresponding operating conditions are improved. In most air conditioning systems, a plurality of devices do not reach the optimal running state during running, and are easy to fall into the phenomenon of 'big horse pulls a trolley', so that energy is wasted. Therefore, the embodiment of the invention introduces the cold load ratio which is the ratio of the installation capacity of the operating equipment of the air conditioning system to the annual peak load of the operating equipment, and the target installation capacity of the operating equipment in the air conditioning system is adjusted by comparing the ratio with the preset cold load threshold value. In the related art, more operation parameters of the equipment are adjusted, and unreasonable setting of the operation equipment in the air conditioning system is not considered, but in the embodiment of the invention, the operation equipment of the air conditioning system is fully considered, and the quantity of the operation equipment is controlled through the cold load ratio, so that the operation of the air conditioning system is more reasonable and more energy-saving.
It should be noted that, in the equipment installation stage of the air conditioning system, the target installation capacity of the main operation equipment can be determined by the cooling load ratio. The problem of type selection of operating equipment is fully considered in the design stage of the air conditioning system, so that the operation of the air conditioning system is more consistent with the aim of energy conservation.
It can be understood that the operating equipment of the air conditioning system can be adjusted to be drag reduction type equipment according to the first evaluation result and the second evaluation result. The resistance-reducing equipment comprises a low-resistance filter and a low-resistance check valve, elbows are reduced, and a right-angle elbow, a right-angle tee are changed into an obtuse-angle elbow or an obtuse-angle tee and the like.
In one embodiment, the operation index includes: the operation energy efficiency evaluation index and the operation energy consumption intensity index comprise any one of the following indexes: a special effect energy efficiency index, a first-level energy efficiency index, a second-level energy efficiency index and a third-level energy efficiency index; the operation energy consumption intensity indexes comprise: energy saving of energy consumption.
In an embodiment, if the first evaluation result is that the initial energy efficiency coefficient is smaller than the target energy efficiency evaluation index, and if the second evaluation result is that the initial energy consumption coefficient is smaller than the target energy consumption intensity index, the operation energy efficiency evaluation index of the air-conditioning system is increased to the target energy efficiency evaluation index. And if the first evaluation result is that the initial energy efficiency coefficient is smaller than the target energy efficiency evaluation index, and if the second evaluation result is that the initial energy consumption coefficient is not smaller than the target energy consumption intensity index, improving the operation energy efficiency evaluation index of the air-conditioning system to the target energy efficiency evaluation index, and reducing the operation energy consumption intensity index of the air-conditioning system to the target energy consumption intensity index. And if the first evaluation result is that the initial energy efficiency coefficient is not less than the target energy efficiency evaluation index, and if the second evaluation result is that the initial energy consumption coefficient is not less than the target energy consumption intensity index, reducing the operation energy consumption intensity index of the air conditioning system to the target energy consumption intensity index.
In an embodiment, the target energy efficiency evaluation index includes an energy efficiency limit value, and the target energy consumption intensity index includes an energy consumption constraint value, and referring to fig. 4, the control method of the air conditioning system further includes, but is not limited to, step S310.
And S310, if the initial energy efficiency coefficient is smaller than the energy efficiency limit value or if the initial energy consumption coefficient is larger than the energy consumption constraint value, outputting prompt information, wherein the prompt information is used for prompting the replacement of operating equipment in the air conditioning system.
In step S310, if the initial energy efficiency coefficient is smaller than the energy efficiency limit value, or if the initial energy consumption coefficient is greater than the energy consumption constraint value, it indicates that the operation condition of the air conditioning system is unreasonable, the operation of the air conditioning system cannot be controlled simply by adjusting the operation index, and whether equipment needs to be replaced should be considered. Therefore, prompt information is sent out and used for prompting the replacement of the running equipment in the air conditioning system. For example, in one embodiment, the chilled water and cooling water pipeline filters, check valves, elbows, and the like are combined according to the selected air conditioning system equipment, and on the basis of guaranteeing the water balance, the low-resistance filters and the low-resistance check valves are selected, so that the number of the elbows is reduced, and the right-angle elbows, the right-angle tees, the obtuse-angle tees, and the like are changed. In another embodiment, the number of devices is adjusted on the basis of a guaranteed water balance.
It can be understood that the related art is often only directed to the operating parameters of the air conditioning system, such as adjusting the outlet water temperature of the chilled water, adjusting the temperature difference of the cooling water, and the like. However, in the embodiment of the present invention, the operation devices in the air conditioning system are deeply controlled, and the air conditioning system can be combined into an optimal device composition by adjusting the number of the devices or the types of the devices on the basis of ensuring the water balance, so that the air conditioning system can be operated to an optimal working condition.
In one embodiment, the operational data includes: the energy consumption of the water chilling unit, the energy consumption of the freezing water pump, the energy consumption of the cooling tower, the total cooling capacity of the host and the total control area of the air conditioning system are controlled; referring to fig. 5, step S120 includes, but is not limited to, steps S410 to S420.
Step S410, determining an initial energy efficiency coefficient according to the ratio of the total cooling capacity of the host and the total energy consumption, wherein the total energy consumption is the sum of the energy consumption of the water chilling unit, the energy consumption of the freezing water pump, the energy consumption of the cooling water pump and the energy consumption of the cooling tower;
and step S420, determining an initial energy consumption coefficient according to the ratio of the total energy consumption to the total control area of the air conditioning system.
Specifically, the initial energy efficiency coefficient (EER) is obtained according to the following formula: and the initial energy efficiency coefficient is the total cooling capacity (kWh) of the host machine (kWh)/(water chilling unit energy consumption + chilled water pump energy consumption + cooling tower energy consumption). The calculated initial energy efficiency coefficient may be classified into a plurality of classes, for example, a third class with an EER greater than 4.0, a second class with an EER greater than 4.5, a first class with an EER greater than 5.0, and a super class with an EER greater than 6.5. And obtaining a first evaluation result according to the comparison between the different grades and the target energy efficiency evaluation index.
The initial coefficient of energy consumption is obtained according to the following formula: initial energy consumption coefficient (water chilling unit energy consumption, chilled water pump energy consumption, cooling water pump energy consumption and cooling tower energy consumption) (kWh)/total control area (m)2). And obtaining a second evaluation result according to the comparison of the initial energy consumption coefficient and the target energy consumption intensity index.
In an embodiment, from the aspect of balancing the energy efficiency relationship of each operating device of the air conditioning system, the air conditioning system is taken as a whole, for example, the optimal operating condition is found by taking the target energy efficiency evaluation index of the whole air conditioning system not less than 5.0 or the target energy consumption intensity index of the air conditioning system not more than T2(kWh/m2) as a control optimization target and dynamically adjusting the chilled water outlet water temperature, the worst loop pressure difference and the cooling water supply and return header pipe temperature difference.
If 80kWh/m2 is taken from supermarket buildings T2 in shopping malls, the optimal operation working condition is found by dynamically adjusting the outlet water temperature of the chilled water, the pressure difference of the worst loop and the temperature difference of the cooling water supply and return water main pipe.
An embodiment of the present invention further provides an air conditioning system, including:
the acquisition module is used for acquiring the operation data of the operation equipment in the air conditioning system and the building type of the operation of the air conditioning system;
the coefficient determining module is used for determining an initial energy efficiency coefficient and an initial energy consumption coefficient of the air conditioning system according to the operation data;
the index determining module is used for determining corresponding target energy efficiency evaluation indexes and target energy consumption intensity indexes according to the building type and a preset index database, and the preset index database comprises: matching information of building type, target energy efficiency evaluation index and target energy consumption intensity index;
the first evaluation module is used for comparing the target energy efficiency evaluation index with the initial energy efficiency coefficient to obtain a first evaluation result;
the second evaluation module is used for comparing the target energy consumption intensity index with the initial energy consumption coefficient to obtain a second evaluation result;
and the control module is used for adjusting the operation index of the air conditioning system according to the first evaluation result and the second evaluation result.
On the one hand, a first evaluation result is obtained by utilizing an initial energy efficiency coefficient and a target energy efficiency coefficient evaluation index of the air conditioning system, a second evaluation result is obtained by utilizing a target energy consumption intensity index and an initial energy consumption coefficient, the running effect of the air conditioning system can be more comprehensively embodied by the evaluation index based on the first evaluation result and the second evaluation result, the science and the accuracy of the evaluation of the running effect of the air conditioning system are improved, on the other hand, the air conditioning system is adjusted according to the evaluation result, the adjusted running index is more reasonable, the energy-saving efficiency of the air conditioning system is improved, and convenience is provided for energy-saving debugging and diagnosis supervision of the air conditioning system.
Specifically, the operation index of the air conditioning system is adjusted according to the first evaluation result and the second evaluation result, so that the operation of the air conditioning system is limited by the energy efficiency coefficient and the energy consumption intensity, the building type is also considered by the target energy efficiency evaluation index and the target energy consumption intensity index, the operation index of the air conditioning system is matched with the corresponding building type, the operation of the air conditioning system is more reasonable, the energy efficiency level of the air conditioning system can be improved, and the energy consumption intensity of the air conditioning system can be reduced.
For a specific execution step of the air conditioning system, the above-mentioned control method of the air conditioning system is referred to, and details are not repeated here.
The method and the system are applied to the construction of the air conditioning system, after one year of actual operation, the energy efficiency coefficient EER of the air conditioning system is improved from 3.0 to 5.3, the energy consumption intensity of the air conditioning system is reduced from 90kWh/m2 to 65kWh/m2, the annual energy saving amount is 52.7 kWh, the annual energy saving rate of the system reaches 43.4%, and the annual emission of CO2 is reduced by 304.1 t.
An embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the method in any of the above method embodiments is implemented.
Furthermore, an embodiment of the present invention also provides a storage medium, which is a computer-readable storage medium storing computer-executable instructions for execution by one or more control processors executing the method in the above-described method embodiment, for example, executing the above-described method steps S110 to S160 in fig. 2, the method steps S210 to S240 in fig. 3, the method step S310 in fig. 4, and the method steps S410 to S420 in fig. 5.
The above-described embodiments of the apparatus are merely illustrative, and the units illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over a plurality of network nodes. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
The embodiments described in the embodiments of the present disclosure are for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation to the technical solutions provided in the embodiments of the present disclosure, and it is obvious to those skilled in the art that the technical solutions provided in the embodiments of the present disclosure are also applicable to similar technical problems with the evolution of technology and the emergence of new application scenarios.
Those skilled in the art will appreciate that the embodiments shown in the examples are not intended to limit the embodiments of the present disclosure, and may include more or less steps than those shown, or some of the steps may be combined, or different steps may be included.
One of ordinary skill in the art will appreciate that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof.
The terms "first," "second," "third," "fourth," and the like in the description of the invention and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It is to be understood that, in the present invention, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
In the several embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer readable storage media (or non-transitory media) and communication media (or transitory media). The term computer-readable storage medium includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer-readable storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. A control method of an air conditioning system, comprising:
acquiring operation data of operating equipment in an air conditioning system and a building type of the air conditioning system;
determining an initial energy efficiency coefficient and an initial energy consumption coefficient of the air conditioning system according to the operation data;
determining a corresponding target energy efficiency evaluation index and a target energy consumption intensity index according to the building type and a preset index database, wherein the preset index database comprises: matching information of the building type, the target energy efficiency evaluation index and the target energy consumption intensity index;
comparing the target energy efficiency evaluation index with the initial energy efficiency coefficient to obtain a first evaluation result;
comparing the target energy consumption intensity index with the initial energy consumption coefficient to obtain a second evaluation result;
and adjusting the operation index of the air conditioning system according to the first evaluation result and the second evaluation result.
2. The control method of an air conditioning system according to claim 1, further comprising:
determining a cold load ratio according to the operation data, wherein the cold load ratio is the ratio of the installation capacity of the operation equipment of the air conditioning system to the annual peak load of the operation equipment;
determining a corresponding preset cold load threshold according to the building type and a preset ratio database, wherein the preset ratio database comprises: matching information of the building type and the preset cold load threshold;
obtaining a third evaluation result according to the comparison between the cold load ratio and the preset cold load threshold;
and adjusting the target installation capacity of the running equipment according to the third evaluation result.
3. The control method of an air conditioning system according to claim 1, wherein the operation index includes: the operation energy efficiency evaluation index and the operation energy consumption intensity index comprise any one of the following indexes: a special effect energy efficiency index, a primary energy efficiency index, a secondary energy efficiency index and a tertiary energy efficiency index; the operation energy consumption intensity indexes comprise: energy saving of energy consumption.
4. The method as claimed in claim 3, wherein the adjusting the operation index of the air conditioning system according to the first evaluation result and the second evaluation result comprises:
if the first evaluation result is that the initial energy efficiency coefficient is smaller than the target energy efficiency evaluation index, and if the second evaluation result is that the initial energy consumption coefficient is smaller than the target energy consumption intensity index, improving the operation energy efficiency evaluation index of the air-conditioning system to the target energy efficiency evaluation index;
if the first evaluation result is that the initial energy efficiency coefficient is smaller than the target energy efficiency evaluation index, and if the second evaluation result is that the initial energy consumption coefficient is not smaller than the target energy consumption intensity index, improving the operating energy efficiency evaluation index of the air-conditioning system to the target energy efficiency evaluation index, and reducing the operating energy consumption intensity index of the air-conditioning system to the target energy consumption intensity index;
and if the first evaluation result is that the initial energy efficiency coefficient is not less than the target energy efficiency evaluation index, and if the second evaluation result is that the initial energy consumption coefficient is not less than the target energy consumption intensity index, reducing the operation energy consumption intensity index of the air conditioning system to the target energy consumption intensity index.
5. The method of claim 1, wherein the target energy efficiency rating indicator comprises an energy efficiency limit value, the target energy consumption intensity indicator comprises an energy consumption constraint value, and the method further comprises:
if the initial energy efficiency coefficient is smaller than the energy efficiency limit value or if the initial energy consumption coefficient is larger than the energy consumption constraint value, outputting prompt information, wherein the prompt information is used for prompting the replacement of running equipment in the air conditioning system.
6. The control method of an air conditioning system according to claim 1, further comprising:
and adjusting the operating equipment of the air conditioning system to be drag reduction type equipment according to the first evaluation result and the second evaluation result.
7. The control method of an air conditioning system according to claim 1, wherein the operation data includes: the energy consumption of the water chilling unit, the energy consumption of the freezing water pump, the energy consumption of the cooling tower, the total cooling capacity of the host and the total control area of the air conditioning system are controlled; determining an initial energy efficiency coefficient and an initial energy consumption coefficient of the air conditioning system according to the operation data, wherein the determining comprises the following steps:
determining the initial energy efficiency coefficient according to the ratio of the total cooling capacity of the host to the total energy consumption, wherein the total energy consumption is the sum of the energy consumption of the water chilling unit, the energy consumption of the freezing water pump, the energy consumption of the cooling water pump and the energy consumption of the cooling tower;
and determining the initial energy consumption coefficient according to the ratio of the total energy consumption to the total control area of the air conditioning system.
8. An air conditioning system, comprising:
the system comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for acquiring operation data of operating equipment in an air conditioning system and the type of a building in which the air conditioning system operates;
the coefficient determining module is used for determining an initial energy efficiency coefficient and an initial energy consumption coefficient of the air conditioning system according to the operation data;
an index determination module, configured to determine a corresponding target energy efficiency evaluation index and a target energy consumption intensity index according to the building type and a preset index database, where the preset index database includes: matching information of the building type, the target energy efficiency evaluation index and the target energy consumption intensity index;
the first evaluation module is used for comparing the target energy efficiency evaluation index with the initial energy efficiency coefficient to obtain a first evaluation result;
the second evaluation module is used for comparing the target energy consumption intensity index with the initial energy consumption coefficient to obtain a second evaluation result;
and the control module is used for adjusting the operation index of the air conditioning system according to the first evaluation result and the second evaluation result.
9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of any one of claims 1 to 7 when executing the computer program.
10. A storage medium, which is a computer-readable storage medium, characterized in that computer-executable instructions are stored for performing the method of any one of claims 1 to 7.
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