CN112050379A - Energy-saving optimized operation control system of regionalized air conditioning system - Google Patents
Energy-saving optimized operation control system of regionalized air conditioning system Download PDFInfo
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- CN112050379A CN112050379A CN202010920518.2A CN202010920518A CN112050379A CN 112050379 A CN112050379 A CN 112050379A CN 202010920518 A CN202010920518 A CN 202010920518A CN 112050379 A CN112050379 A CN 112050379A
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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
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- F24F11/56—Remote control
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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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Abstract
The invention belongs to the technical field of refrigeration, and particularly relates to an energy-saving optimized operation control system of a regionalized air conditioning system. The system provides a general framework and a design idea of the regional cooling energy-saving control system, solves the problem of adjusting the quality and quantity of the regional cooling system, establishes a control model of the indoor average temperature of the air-conditioning room of the building, and adopts a PID control method to obtain the control problem of the large time lag and the uncertain parameter of the regional cooling system.
Description
Technical Field
The invention belongs to the technical field of refrigeration, and particularly relates to an energy-saving optimized operation control system of a regionalized air conditioning system.
Background
The energy-saving control technology of the regional cooling system is much more complex than that of the central air conditioner, and is the expansion and continuation of the energy-saving control technology of the central air conditioner. The existing central air-conditioning energy-saving control technology is researched aiming at energy-saving optimized operation and control of a single building or a single device, integrity is lacked, control means are few, and energy consumption and energy efficiency of an air-conditioning system are difficult to evaluate due to the imperfection of an operation energy efficiency online monitoring technology. The regional cooling system comprises a regional cooling station (secondary pipe network), a secondary cooling exchange station (building cooling pipe network) and a plurality of types and quantity of equipment in an air-conditioning room, the running parameters of the equipment are mutually coupled and mutually influenced, and the optimized running and control technology is very complex.
Although people do a lot of research work on the aspect of optimizing control of a central air-conditioning system and research on the aspect of energy-saving control of a regional cooling system, compared with a conventional air-conditioning system, the regional cooling system has long cooling distance and large lag of a pipe network, the optimized operation and control technology of the regional cooling system is more complex than that of the conventional central air-conditioning system, and the exploration history of the field is relatively short, so that the energy-saving optimized operation and control technology which aims at the lowest energy consumption/highest energy efficiency of the system is particularly important for designing a method for improving the control performance of the system and applying the method to the energy-saving operation of the regional cooling system.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to design a new technical scheme and provide an energy-saving optimized operation control system of a regionalized air-conditioning system, so as to solve the problems.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an energy-saving optimized operation control system of a regionalized air conditioning system comprises:
the server group comprises a central server, an application program server, a WEB server, a print server and a user authentication server, used for receiving the real-time data uploaded by the regional cold supply station, the secondary cold exchange station and each air-conditioning room device, calculating the increment of the cooling capacity required by each building in the system and the increment of the total cooling capacity required by the system according to the actual cooling capacity of each building at the last moment in the system and the measured value of the outdoor meteorological parameter, optimizing the operation parameters of the regional cooling station and each air conditioning equipment in each building by taking the minimum refrigeration energy consumption or the highest energy efficiency as the target, downloading the optimized parameters to the regional cooling station and each building, meanwhile, all data are stored and backed up to a data warehouse, and remote data support is provided for building owners, public services, technical service units and superior management departments through multidimensional reports, analysis, query and classification comparison technologies;
the system comprises a regional cold supply station energy-saving control subsystem, a regional cold supply station energy-saving control subsystem and a specific equipment device, wherein the regional cold supply station energy-saving control subsystem is arranged in a regional cold supply station and comprises a remote control device, a field control device and a specific equipment device, the remote control device comprises a regional cold supply station data server and a regional cold supply station remote monitoring computer, the field control device comprises a regional cold supply station PLC control cabinet, a regional cold supply station frequency conversion cabinet and a regional cold supply station switch cabinet, the specific equipment device comprises a plurality of regional cold supply station data acquisition devices and a regional cold supply station execution mechanism, and the regional cold supply station data server, the regional cold supply station monitoring computer and the regional cold supply station PLC control data cabinet are used for optimizing the operation parameters and; the lower computer software collects and uploads the running parameters of each device through each sensor, receives the running parameter optimization set value from the upper computer software, wherein the upper computer software is used for receiving, storing, uploading and displaying the running data of each device of the regional cooling station, receives the running data from the regional number optimization set value for comparison, and controls the action of the actuator through output frequency and opening degree signals to enable each device to run according to the energy-saving optimization set value;
the building energy-saving control subsystem comprises a building data server, a monitoring computer, a secondary cooling exchange station energy-saving control subsystem and an air-conditioning terminal equipment energy-saving control subsystem, wherein the building data server is used for receiving, storing and uploading online monitoring data of all equipment of the secondary cooling exchange station, receiving running parameter optimization set values of all equipment of the secondary cooling exchange station from a regional data center and a regional cold supply station, respectively downloading the running parameter optimization set values to the secondary cooling exchange station energy-saving control subsystem and the air-conditioning terminal energy-saving control subsystem, and simultaneously providing a real-time monitoring display interface for all equipment in the building for the monitoring computer. The monitoring computer is used for monitoring the actual operation condition, fault information and maintenance information of the air conditioning system in the building in real time for a building owner or property manager.
The energy-saving control subsystem of the air-conditioning terminal equipment comprises: the energy-saving control subsystem of the air-conditioning terminal equipment is required to be installed in each building and comprises a fresh air unit/air-conditioning unit PLC control cabinet, a fan coil intelligent control device with a remote transmission function and an air-conditioning terminal acquisition executing device, wherein the fan coil intelligent control device with the remote transmission function is communicated in a wireless transmission mode through power line transmission.
Preferably, the energy-saving control subsystem of the secondary cooling exchange station is installed in each building and comprises a PLC control cabinet of the secondary cooling exchange station in the building, a frequency conversion cabinet and a switch cabinet, wherein each sensor is used for collecting and uploading operation parameters of each device of the secondary cooling exchange station, receiving an operation parameter optimization set value from a data server, comparing an actual measurement value with the optimization set value, and controlling the actuator to act through signals of output frequency, opening degree and the like so that each device operates according to the energy-saving optimization set value.
Preferably, the data acquisition device of the regional cooling station comprises temperature sensors, flow meters, differential pressure sensors and power sensors.
Preferably, the data collected by the data collecting device of the regional cooling station comprises:
the input electric power, the inlet/outlet temperature and the flow rate of chilled water, the inlet/outlet temperature and the flow rate of cooling water of each water chilling unit;
the input electric power and inlet/outlet pressure difference of each chilled water primary pump;
the input electric power, inlet and outlet pressure difference and flow rate of each cooling water pump;
and inputting electric power to each fan.
Preferably, the regional cooling station actuating mechanism comprises a water chilling unit switch contactor, a cooling water pump frequency converter, a cooling tower fan frequency converter, a chilled water electric regulating valve, a cooling water electric regulating valve and a chilled water secondary pump frequency converter.
Preferably, the step of collecting and uploading the operation parameters of the devices of the secondary refrigeration capacity exchange station by the sensors specifically includes:
the supply/return temperature and flow of chilled water at the primary side of each plate heat exchanger, the supply/return temperature and flow of chilled water at the secondary side of each plate heat exchanger, the pressure difference of the chilled water supply and return header pipes at the primary side and the secondary side of the secondary cooling exchange station, the switching state of each chilled water circulating pump in a building and the input electric power.
Preferably, the air conditioner terminal acquisition executing device comprises an air conditioner terminal data acquisition device and an air conditioner terminal executing mechanism.
Preferably, the air conditioner terminal data acquisition device comprises temperature sensors and humidity sensors, and is used for acquiring indoor temperature and relative humidity of an air conditioner room, an opening state of air conditioner terminal equipment and an air volume adjusting gear of the air conditioner terminal equipment;
the air conditioner terminal actuating mechanism comprises an air conditioner unit chilled water electric regulating valve, an air conditioner unit fresh air return ratio electric regulating valve, a fresh air unit chilled water electric regulating valve and a fan coil intelligent control device.
Preferably, the central server receives the original data uploaded by the data server of the regional cooling station and the data servers of the buildings, analyzes and processes the original data, and starts to calculate the actual refrigerating capacity Q of each water chilling unit in the regional cooling system in the sampling period Ti(k) Actual refrigerating capacity Q of systemSYS(k) Heat quantity Q conveyed by cooling watercw(k) And the running performance coefficient COP of each running water chilling unitRi(k) All running water chilling unitsCoefficient of average running performance COPR(k) And the chilled water running conveying coefficient WTFchwR(k) Cooling water running transport coefficient WTFcwR(k) Coefficient of performance (COP) of cooling towerctR(k) And coefficient of performance (COP) of operation of air-conditioning terminal equipmentterminal,R(k)And coefficient of performance COP of zone cooling systemR,SYS(k)。
Preferably, the data analysis and processing specifically includes:
the central server inputs in advance the limit values of the new effective temperature of various buildings, the running performance coefficient COPR of the water chilling unit, the running transmission coefficient WTFchwR of chilled water, the running transmission coefficient WTFcwR of cooling water, the running performance coefficient COPctR of a cooling tower, the running performance coefficient COPTERMINal, R of air-conditioning terminal equipment, and the running performance coefficients COPR and SYS of the regional cooling system.
The central server calculates operation energy efficiency index values of the regional cooling systems according to different time dimensions, wherein the operation energy efficiency index values comprise data in a sampling period, hour average data, day average data, week average data, season average data, year average data and new effective temperatures of all buildings; comparing the operation energy efficiency index value of the regional cooling system with the limit value of the regional cooling system according to different time dimensions, and identifying the operation energy efficiency data exceeding the limit value; the new effective temperature of each building is compared with the limit value of the new effective temperature of the same type of building, and the building exceeding the limit value is identified.
And according to the query requirements of the user, the central server sends the data required by the user to each client in a list, curve and other modes.
The invention has the following beneficial effects:
the invention establishes an integral energy consumption optimization model of the system, designs the overall flow and the overall framework of the control system, designs the regional cooling energy-saving optimization operation and control system, solves the problem of adjusting the quality and quantity of the regional cooling system, establishes a control model of the indoor average temperature of the air-conditioning room of the building, and has good economic benefit and social benefit.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the system structure of the energy-saving optimized operation control system of the regionalized air conditioning system of the embodiment;
fig. 2 is a schematic diagram of a control principle of an energy-saving optimized operation control system of a regional air conditioning system according to the embodiment.
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.
It should be noted that certain names are used throughout the specification and claims to refer to particular components. It will be understood that one of ordinary skill in the art may refer to the same component by different names. The present specification and claims do not intend to distinguish between components that differ in name but not function. As used in the specification and claims of this application, the terms "comprises" and "comprising" are intended to be open-ended terms that should be interpreted as "including, but not limited to," or "including, but not limited to. The embodiments described in the detailed description are preferred embodiments of the present invention and are not intended to limit the scope of the present invention.
Moreover, those skilled in the art will appreciate that aspects of the present invention may be embodied as a system, method or computer program product. Accordingly, various aspects of the present invention may be embodied in a combination of hardware and software, which may be referred to herein generally as a "circuit," module "or" system. Furthermore, in some embodiments, various aspects of the invention may also be embodied in the form of a computer program product in one or more microcontroller-readable media having microcontroller-readable program code embodied therein.
Examples
Referring to fig. 1-2, an energy-saving optimized operation control system for a regionalized air conditioning system includes:
the server group comprises a central server, an application program server, a WEB server, a print server and a user authentication server, used for receiving the real-time data uploaded by the regional cold supply station, the secondary cold exchange station and each air-conditioning room device, calculating the increment of the cooling capacity required by each building in the system and the increment of the total cooling capacity required by the system according to the actual cooling capacity of each building at the last moment in the system and the measured value of the outdoor meteorological parameter, optimizing the operation parameters of the regional cooling station and each air conditioning equipment in each building by taking the minimum refrigeration energy consumption or the highest energy efficiency as the target, downloading the optimized parameters to the regional cooling station and each building, meanwhile, all data are stored and backed up to a data warehouse, and remote data support is provided for building owners, public services, technical service units and superior management departments through multidimensional reports, analysis, query and classification comparison technologies;
the system comprises a regional cold supply station energy-saving control subsystem, a regional cold supply station energy-saving control subsystem and a specific equipment device, wherein the regional cold supply station energy-saving control subsystem is arranged in a regional cold supply station and comprises a remote control device, a field control device and a specific equipment device, the remote control device comprises a regional cold supply station data server and a regional cold supply station remote monitoring computer, the field control device comprises a regional cold supply station PLC control cabinet, a regional cold supply station frequency conversion cabinet and a regional cold supply station switch cabinet, the specific equipment device comprises a plurality of regional cold supply station data acquisition devices and a regional cold supply station execution mechanism, and the regional cold supply station data server, the regional cold supply station monitoring computer and the regional cold supply station PLC control data cabinet are used for optimizing the operation parameters and; the lower computer software collects and uploads the running parameters of each device through each sensor, receives the running parameter optimization set value from the upper computer software, wherein the upper computer software is used for receiving, storing, uploading and displaying the running data of each device of the regional cooling station, receives the running data from the regional number optimization set value for comparison, and controls the action of the actuator through output frequency and opening degree signals to enable each device to run according to the energy-saving optimization set value;
the building energy-saving control subsystem comprises a building data server, a monitoring computer, a secondary cooling exchange station energy-saving control subsystem and an air-conditioning terminal equipment energy-saving control subsystem, wherein the building data server is used for receiving, storing and uploading online monitoring data of all equipment of the secondary cooling exchange station, receiving running parameter optimization set values of all equipment of the secondary cooling exchange station from a regional data center and a regional cold supply station, respectively downloading the running parameter optimization set values to the secondary cooling exchange station energy-saving control subsystem and the air-conditioning terminal energy-saving control subsystem, and simultaneously providing a real-time monitoring display interface for all equipment in the building for the monitoring computer. The monitoring computer is used for monitoring the actual operation condition, fault information and maintenance information of the air conditioning system in the building in real time for a building owner or property manager.
The energy-saving control subsystem of the air-conditioning terminal equipment comprises: the energy-saving control subsystem of the air-conditioning terminal equipment is required to be installed in each building and comprises a fresh air unit/air-conditioning unit PLC control cabinet, a fan coil intelligent control device with a remote transmission function and an air-conditioning terminal acquisition executing device, wherein the fan coil intelligent control device with the remote transmission function is communicated in a wireless transmission mode through power line transmission.
The energy-saving control subsystem of the secondary cooling exchange station is arranged in each building and comprises a PLC control cabinet of the secondary cooling exchange station in the building, a frequency conversion cabinet and a switch cabinet, wherein each sensor is used for collecting and uploading operation parameters of each device of the secondary cooling exchange station, receiving an operation parameter optimization set value from a data server, comparing an actual measurement value with the optimization set value, and controlling the actuator to act through signals such as output frequency, opening degree and the like so that each device operates according to the energy-saving optimization set value.
The regional cold supply station data acquisition device in this embodiment includes each temperature sensor, each flowmeter, differential pressure sensor, power sensor, and the data of gathering include:
the input electric power, the inlet/outlet temperature and the flow rate of chilled water, the inlet/outlet temperature and the flow rate of cooling water of each water chilling unit;
the input electric power and inlet/outlet pressure difference of each chilled water primary pump;
the input electric power, inlet and outlet pressure difference and flow rate of each cooling water pump;
and inputting electric power to each fan.
Regional cooling station actuating mechanism includes cooling water set switch contactor, cooling water pump converter, cooling tower fan converter, refrigerated water electric regulating valve and cooling water electric regulating valve, refrigerated water secondary pump converter in this embodiment.
In this embodiment, the step of acquiring and uploading the operation parameters of each device of the secondary refrigeration capacity exchange station by using each sensor specifically includes:
the supply/return temperature and flow of chilled water at the primary side of each plate heat exchanger, the supply/return temperature and flow of chilled water at the secondary side of each plate heat exchanger, the pressure difference of the chilled water supply and return header pipes at the primary side and the secondary side of the secondary cooling exchange station, the switching state of each chilled water circulating pump in a building and the input electric power.
The air conditioner terminal acquisition executing device in the embodiment comprises an air conditioner terminal data acquisition device and an air conditioner terminal executing mechanism.
The air conditioner terminal data acquisition device in the embodiment comprises temperature sensors and humidity sensors, and is used for acquiring indoor temperature and relative humidity of an air conditioner room, an opening state of air conditioner terminal equipment and an air volume adjusting gear of the air conditioner terminal equipment;
the air conditioner terminal actuating mechanism comprises an air conditioner unit chilled water electric regulating valve, an air conditioner unit fresh air return ratio electric regulating valve, a fresh air unit chilled water electric regulating valve and a fan coil intelligent control device.
In this embodiment, the central server receives the original data uploaded by the data server of the regional cooling station and the data servers of the buildings, analyzes and processes the original data, and starts to calculate the actual refrigerating capacity Q of each water chilling unit in the regional cooling system within the sampling period Ti(k) Actual refrigeration of the systemQuantity QSYS(k) Heat quantity Q conveyed by cooling watercw(k) And the running performance coefficient COP of each running water chilling unitRi(k) Average running performance coefficient COP of all running water chilling unitsR(k) And the chilled water running conveying coefficient WTFchwR(k) Cooling water running transport coefficient WTFcwR(k) Coefficient of performance (COP) of cooling towerctR(k) And coefficient of performance (COP) of operation of air-conditioning terminal equipmentterminal,R(k)And coefficient of performance COP of zone cooling systemR,SYS(k)。
The data analysis and processing in this embodiment specifically includes:
the central server inputs in advance the limit values of the new effective temperature of various buildings, the running performance coefficient COPR of the water chilling unit, the running transmission coefficient WTFchwR of chilled water, the running transmission coefficient WTFcwR of cooling water, the running performance coefficient COPctR of a cooling tower, the running performance coefficient COPTERMINal, R of air-conditioning terminal equipment, and the running performance coefficients COPR and SYS of the regional cooling system.
The central server calculates operation energy efficiency index values of the regional cooling systems according to different time dimensions, wherein the operation energy efficiency index values comprise data in a sampling period, hour average data, day average data, week average data, season average data, year average data and new effective temperatures of all buildings; comparing the operation energy efficiency index value of the regional cooling system with the limit value of the regional cooling system according to different time dimensions, and identifying the operation energy efficiency data exceeding the limit value; comparing the new effective temperature of each building with the limit value of the new effective temperature of the same type of building, and identifying the building exceeding the limit value;
and according to the query requirements of the user, the central server sends the data required by the user to each client in a list, curve and other modes.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a regional air conditioning system energy-conservation operation control system that optimizes which characterized in that: the method comprises the following steps:
the server group comprises a central server, an application program server, a WEB server, a print server and a user authentication server, used for receiving the real-time data uploaded by the regional cold supply station, the secondary cold exchange station and each air-conditioning room device, calculating the increment of the cooling capacity required by each building in the system and the increment of the total cooling capacity required by the system according to the actual cooling capacity of each building at the last moment in the system and the measured value of the outdoor meteorological parameter, optimizing the operation parameters of the regional cooling station and each air conditioning equipment in each building by taking the minimum refrigeration energy consumption or the highest energy efficiency as the target, downloading the optimized parameters to the regional cooling station and each building, meanwhile, all data are stored and backed up to a data warehouse, and remote data support is provided for building owners, public services, technical service units and superior management departments through multidimensional reports, analysis, query and classification comparison technologies;
the system comprises a regional cold supply station energy-saving control subsystem, a regional cold supply station energy-saving control subsystem and a specific equipment device, wherein the regional cold supply station energy-saving control subsystem is arranged in a regional cold supply station and comprises a remote control device, a field control device and a specific equipment device, the remote control device comprises a regional cold supply station data server and a regional cold supply station remote monitoring computer, the field control device comprises a regional cold supply station PLC control cabinet, a regional cold supply station frequency conversion cabinet and a regional cold supply station switch cabinet, the specific equipment device comprises a plurality of regional cold supply station data acquisition devices and a regional cold supply station execution mechanism, and the regional cold supply station data server, the regional cold supply station monitoring computer and the regional cold supply station PLC control data cabinet are used for optimizing the operation parameters and; the lower computer software collects and uploads the running parameters of each device through each sensor, receives the running parameter optimization set value from the upper computer software, wherein the upper computer software is used for receiving, storing, uploading and displaying the running data of each device of the regional cooling station, receives the running data from the regional number optimization set value for comparison, and controls the action of the actuator through output frequency and opening degree signals to enable each device to run according to the energy-saving optimization set value;
the building energy-saving control subsystem comprises a building data server, a monitoring computer, a secondary cooling exchange station energy-saving control subsystem and an air-conditioning terminal equipment energy-saving control subsystem, wherein the building data server is used for receiving, storing and uploading online monitoring data of all equipment of the secondary cooling exchange station, receiving running parameter optimization set values of all equipment of the secondary cooling exchange station from a regional data center and a regional cold supply station, respectively downloading the running parameter optimization set values to the secondary cooling exchange station energy-saving control subsystem and the air-conditioning terminal energy-saving control subsystem, and simultaneously providing a real-time monitoring display interface for all equipment in the building for the monitoring computer. The monitoring computer is used for monitoring the actual operation condition, fault information and maintenance information of the air conditioning system in the building in real time for a building owner or property manager;
the energy-saving control subsystem of the air-conditioning terminal equipment comprises: the energy-saving control subsystem of the air-conditioning terminal equipment is required to be installed in each building and comprises a fresh air unit/air-conditioning unit PLC control cabinet, a fan coil intelligent control device with a remote transmission function and an air-conditioning terminal acquisition executing device, wherein the fan coil intelligent control device with the remote transmission function is communicated in a wireless transmission mode through power line transmission.
2. The system of claim 1, wherein the system comprises: the energy-saving control subsystem of the secondary cooling exchange station is arranged in each building and comprises a PLC control cabinet, a frequency conversion cabinet and a switch cabinet of the secondary cooling exchange station in the building, wherein the sensors are used for collecting and uploading the running parameters of the equipment of the secondary cooling exchange station, receiving the running parameter optimization set value from the data server, comparing the measured value with the optimization set value, and controlling the action of the actuator through the output of signals such as frequency, opening degree and the like to enable the equipment to run according to the energy-saving optimization set value.
3. The system of claim 1, wherein the system comprises: the data acquisition device of the regional cooling station comprises temperature sensors, flowmeters, differential pressure sensors and power sensors.
4. The system of claim 3, wherein the system comprises: the data collected by the data collecting device of the regional cooling station comprises the following data:
the input electric power, the inlet/outlet temperature and the flow rate of chilled water, the inlet/outlet temperature and the flow rate of cooling water of each water chilling unit;
the input electric power and inlet/outlet pressure difference of each chilled water primary pump;
the input electric power, inlet and outlet pressure difference and flow rate of each cooling water pump;
and inputting electric power to each fan.
5. The system of claim 1, wherein the system comprises: the regional cooling station actuating mechanism comprises a water chilling unit switch contactor, a cooling water pump frequency converter, a cooling tower fan frequency converter, a chilled water electric regulating valve, a cooling water electric regulating valve and a chilled water secondary pump frequency converter.
6. The system of claim 2, wherein the system comprises: the method for collecting and uploading the operation parameters of the equipment of the secondary cold exchange station through the sensors specifically comprises the following steps:
the supply/return temperature and flow of chilled water at the primary side of each plate heat exchanger, the supply/return temperature and flow of chilled water at the secondary side of each plate heat exchanger, the pressure difference of the chilled water supply and return header pipes at the primary side and the secondary side of the secondary cooling exchange station, the switching state of each chilled water circulating pump in a building and the input electric power.
7. The system of claim 1, wherein the system comprises: the air conditioner terminal acquisition executing device comprises an air conditioner terminal data acquisition device and an air conditioner terminal executing mechanism.
8. The system of claim 7, wherein the system comprises: the air conditioner tail end data acquisition device comprises temperature sensors and humidity sensors and is used for acquiring indoor temperature and relative humidity of an air conditioner room, an opening state of air conditioner tail end equipment and an air volume adjusting gear of the air conditioner tail end equipment;
the air conditioner terminal actuating mechanism comprises an air conditioner unit chilled water electric regulating valve, an air conditioner unit fresh air return ratio electric regulating valve, a fresh air unit chilled water electric regulating valve and a fan coil intelligent control device.
9. The system of claim 1, wherein the system comprises: the central server receives the original data uploaded by the data server of the regional cooling station and the data server of each building, analyzes and processes the original data, and starts to calculate the actual refrigerating capacity Q of each water chilling unit in the regional cooling system in the sampling period Ti(k) Actual refrigerating capacity Q of systemSYS(k) Heat quantity Q conveyed by cooling watercw(k) And the running performance coefficient COP of each running water chilling unitRi(k) Average running performance coefficient COP of all running water chilling unitsR(k) And the chilled water running conveying coefficient WTFchwR(k) Cooling water running transport coefficient WTFcwR(k) Coefficient of performance (COP) of cooling towerctR(k) And coefficient of performance (COP) of operation of air-conditioning terminal equipmentterminal,R(k)And coefficient of performance COP of zone cooling systemR,SYS(k)。
10. The system of claim 9, wherein the system comprises: the data analysis and processing specifically comprises:
the central server inputs the limit values of the new effective temperatures of various buildings, the running performance coefficient COPR of the water chilling unit, the running transmission coefficient WTFchwR of chilled water, the running transmission coefficient WTFcwR of cooling water, the running performance coefficient COPctR of a cooling tower, the running performance coefficient COPTERMINal, R of air-conditioning terminal equipment, the running performance coefficient COPR of an area cooling system and the limit values of related indexes of SYS in advance;
the central server calculates operation energy efficiency index values of the regional cooling systems according to different time dimensions, wherein the operation energy efficiency index values comprise data in a sampling period, hour average data, day average data, week average data, season average data, year average data and new effective temperatures of all buildings; comparing the operation energy efficiency index value of the regional cooling system with the limit value of the regional cooling system according to different time dimensions, and identifying the operation energy efficiency data exceeding the limit value; comparing the new effective temperature of each building with the limit value of the new effective temperature of the same type of building, and identifying the building exceeding the limit value;
and according to the query requirements of the user, the central server sends the data required by the user to each client in a list, curve and other modes.
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| CN (1) | CN112050379A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005337657A (en) * | 2004-05-31 | 2005-12-08 | Daikin Ind Ltd | Air conditioner |
| CN1916519A (en) * | 2006-08-01 | 2007-02-21 | 华南理工大学 | System of adjusting quantity of cold, and adjustment method for central cooling in region |
| CN101344291A (en) * | 2008-08-19 | 2009-01-14 | 华南理工大学 | High-efficiency energy-saving air conditioning system used for area cold supplying and its implementing method |
| KR101441486B1 (en) * | 2013-11-18 | 2014-09-17 | 한국과학기술연구원 | Cooling apparatus using an absorption refrigerator and a desiccant cooling system |
| CN206833223U (en) * | 2017-06-27 | 2018-01-02 | 南京长江都市建筑设计股份有限公司 | A kind of district cooling station operation management system based on WEB technologies |
| CN207865610U (en) * | 2018-02-07 | 2018-09-14 | 华南理工大学建筑设计研究院 | A kind of middle temperature air conditioning system based on regional cold supply system |
-
2020
- 2020-09-04 CN CN202010920518.2A patent/CN112050379A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005337657A (en) * | 2004-05-31 | 2005-12-08 | Daikin Ind Ltd | Air conditioner |
| CN1916519A (en) * | 2006-08-01 | 2007-02-21 | 华南理工大学 | System of adjusting quantity of cold, and adjustment method for central cooling in region |
| CN101344291A (en) * | 2008-08-19 | 2009-01-14 | 华南理工大学 | High-efficiency energy-saving air conditioning system used for area cold supplying and its implementing method |
| KR101441486B1 (en) * | 2013-11-18 | 2014-09-17 | 한국과학기술연구원 | Cooling apparatus using an absorption refrigerator and a desiccant cooling system |
| CN206833223U (en) * | 2017-06-27 | 2018-01-02 | 南京长江都市建筑设计股份有限公司 | A kind of district cooling station operation management system based on WEB technologies |
| CN207865610U (en) * | 2018-02-07 | 2018-09-14 | 华南理工大学建筑设计研究院 | A kind of middle temperature air conditioning system based on regional cold supply system |
Non-Patent Citations (1)
| Title |
|---|
| 闫军威: "区域供冷***节能优化运行与控制方法研究及***实现", 《中国博士学位论文全文数据库》 * |
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