CN108151235B - Energy-saving air conditioning system capable of being controlled in self-adaptive and regional mode for large public building - Google Patents
Energy-saving air conditioning system capable of being controlled in self-adaptive and regional mode for large public building Download PDFInfo
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- CN108151235B CN108151235B CN201810137807.8A CN201810137807A CN108151235B CN 108151235 B CN108151235 B CN 108151235B CN 201810137807 A CN201810137807 A CN 201810137807A CN 108151235 B CN108151235 B CN 108151235B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The application discloses a self-adaptive regional-controllable energy-saving air conditioning system for a large public building, which is characterized by comprising a control system, a water system, a wind system and an air treatment unit; the water system exchanges heat with circulating wind in the wind system through the air treatment unit, and the wind system supplies heat and refrigerates indoors. The system is provided with two operation modes of heating and refrigerating, a heater is started to operate the heating mode in winter, a cooler is started to operate the refrigerating mode through the conversion of the operation mode converter in summer, a plurality of coolers and the heaters are arranged, the operation number of the coolers and the heaters is controlled according to different loads, and the heaters or the operation number of the coolers can be turned off and turned on during partial load to enable the heaters or the coolers to operate so as to achieve the effect of economic operation while still keeping the optimal efficiency, and the economic operation is realized.
Description
Technical Field
The application relates to an air conditioning system capable of achieving building energy conservation by optimizing operation and self-adaption, in particular to an energy-saving air conditioning system capable of achieving regional control by self-adaption of a large public building.
Background
The current large public building area accounts for 5% -6% of the total building area of towns, and in various buildings, the large public building has large energy consumption and rapid quantity increase speed. The investigation result shows that the energy waste of the large public buildings is serious, the large public buildings have huge energy saving potential, meanwhile, along with the development of the economy and the acceleration of the urban process in China, the large public buildings are rapidly increased at the speed of 3000-4000 ten thousand square meters per year, the proportion of the large public buildings with high energy consumption indexes to the total area of the urban buildings is larger and larger, and under the severe energy saving situation, the popularization force of building energy saving work is increased, so that the reduction of the energy consumption of the large public buildings becomes the key point of building energy saving research.
In summary, the energy-saving air conditioning system which is self-adaptive and can be controlled by areas for large public buildings is designed for heating and cooling large public buildings, so that low-energy-consumption economic operation is realized, and energy saving and environmental protection of the buildings are particularly important.
Disclosure of Invention
Aiming at the defects of the prior art, the application aims to provide an energy-saving air conditioning system which is adaptive to large public buildings and can be controlled in different areas.
The technical scheme for solving the technical problems is that the application provides a self-adaptive regional-controllable energy-saving air conditioning system for a large public building, which is characterized by comprising a control system, a water system, a wind system and an air treatment unit; the water system exchanges heat with circulating wind in the wind system through the air treatment unit, and the wind system supplies heat and refrigerates indoors;
the control system comprises a total control center, an outdoor temperature sensor, an operation mode converter, a fan frequency controller, an operation quantity controller and a heat and cold source temperature setter; the water system comprises a medium-level operation water pump, a first-level operation water pump, a cooler, a heater, a cold and hot energy distributor, a fault detection module, a PID controller, a water supply pipe flow sensor and an electromagnetic valve; the wind system comprises a variable frequency wind supply machine, a wind supply pipe total pipeline flow sensor, a cold and hot quantity distributor, a fault detection module, a PID controller, a wind valve, a wind supply pipe branch flow sensor, an indoor temperature sensor, a PIR passive infrared sensor, a return wind machine and a return wind pipe temperature sensor;
the control center is respectively connected with the outdoor temperature sensor, the running mode converter and the fan frequency controller; the operation mode converter is connected with the operation quantity controller; the fan frequency controller is connected with the variable-frequency air supply fan; the heat and cold source temperature setter is respectively connected with the running number controller and the return air pipe temperature sensor; the control center is in wireless connection with the fault detection module and the cold and hot energy distributor through a DIU;
at least one primary operation water pump, at least one heater, at least one cooler, at least one intermediate operation water pump, an electromagnetic valve and a water supply pipe flow sensor are sequentially arranged on a water supply pipe of the water system according to the water flow direction; the running number controller is respectively connected with the heater, the cooler, the primary running water pump and the intermediate running water pump, and controls the running number of the primary running water pump and the intermediate running water pump; each stage of operation water pump corresponds to a heater or a cooler; the input end of the hot and cold energy distributor is connected with the output end of the fault detection module, and the output end is connected with the PID controller; the input end of the fault detection module is connected with a water supply pipe flow sensor; the output end of the PID controller is connected with the electromagnetic valve, and the flow sensor of the water supply pipe is connected with the input end of the PID controller to form a feedback loop;
a variable-frequency air supply machine and a total pipeline flow sensor of the air supply pipe are sequentially arranged on the air supply pipe of the air system according to the wind direction; a return air pipe of the air system is provided with a return air fan and a return air pipe temperature sensor in sequence according to the wind direction; each air supply pipe branch of the air supply pipe is sequentially provided with an air valve, an air supply pipe branch flow sensor and a corresponding room according to the wind direction, and each room is internally provided with an indoor temperature sensor and a PIR passive infrared sensor; the output end of the fault detection module connected with the air supply pipe total line flow sensor is connected with the input end of the cold and heat quantity distributor; the output end of the fault detection module connected with the indoor temperature sensor and the PIR passive infrared sensor is connected with the input end of the cold and heat quantity distributor; the output end of the cold and heat quantity distributor is connected with the input end of the PID controller corresponding to each air supply pipe branch; the output end of the PID controller corresponding to each air supply pipe branch is respectively connected with the air valve of each air supply pipe branch; the air valve is connected with the air supply pipe branch flow sensor; the branch flow sensor of the air supply pipe is connected with the input end of the PID controller to form a feedback loop.
Compared with the prior art, the application has the beneficial effects that:
(1) The system is provided with two operation modes of heating and refrigerating, a heater is started to operate the heating mode in winter, a cooler is started to operate the refrigerating mode through the conversion of the operation mode converter in summer, a plurality of coolers and the heaters are arranged, the operation number of the coolers and the heaters is controlled according to different loads, and the heaters or the operation number of the coolers can be turned off and turned on during partial load to enable the heaters or the coolers to operate so as to achieve the effect of economic operation while still keeping the optimal efficiency, and the economic operation is realized.
(2) The system is provided with the fault detection module and the PID feedback loop, the fault detection module can carry out fault detection on the sensor so as to maintain the sensor in time, and the PID feedback loop can avoid the control effect error caused by environmental change, so that the system is more accurate and stable.
(3) The system is characterized in that the system is provided with a temperature sensor and a PIR passive infrared sensor in each office area, the PIR passive infrared sensor detects the number of people in the office area by detecting the radiation quantity of the human body, the indoor temperature and the number of people in each office area can be controlled in a regional pertinence manner, when the number of people in a certain office area is small, the PIR passive infrared sensor can transmit signals to a hot and cold quantity distributor and then independently control the office area, so that the system is more energy-saving in operation and more economical, and energy waste is avoided.
Drawings
Fig. 1 is a schematic diagram of the overall system structure of an embodiment of an energy-saving air conditioning system for self-adaptive zonal control of a large public building.
Fig. 2 is a schematic structural view of a heat and cold distributor of an embodiment of an energy-saving air conditioning system for self-adaptive zonal control of a large public building according to the present application.
Fig. 3 is a schematic structural diagram of a fault detection module of an embodiment of an energy-saving air conditioning system capable of being adaptively controlled in different areas for a large public building according to the present application.
( In the figure: 1. a general control center; 2. an outdoor temperature sensor; 3. an operation mode converter; 4. a fan frequency controller; 5. an operation number controller; 6. a heat-cold source temperature setting device; 7. a heater; 8. a cooler; 9. a heat and cold quantity distributor; 10. a fault detection module; 11. a PID controller; 12. an air treatment unit; 13. a water supply pipe; 14. a water return pipe; 15. a bypass pipe; 16. an air supply pipe; 17. an air return pipe; 18. a water supply pipe flow sensor; 19. an electromagnetic valve; 20. an air valve; 21. a return air pipe temperature sensor; 22. PIR passive infrared sensor; 23. variable frequency air supply machine; 24. a return air machine; 25. a water pump is operated at a medium level; 26. a first-stage operation water pump; 27. a total flow sensor of the air supply pipe; 28. an indoor temperature sensor; 29. a branch flow sensor of the air supply pipe; 30. a supply pipe branch; 101. a normal history data storage module; 102. a new data importing module; 103. a computing module; 104. a sub-relay; 105. dividing DIU; 901. a microcomputer data calculation controller; 902. a main relay; 903. main DIU )
Detailed Description
Specific examples of the present application are given below. The specific examples are provided only for further details of the present application and do not limit the scope of the claims.
The application provides an energy-saving air conditioning system (see figures 1-3) which is self-adaptive and can be controlled in different areas and is used for heating and refrigerating a large public building, and is characterized in that the system comprises a control system, a water system, a wind system and an air treatment unit 12; the water system exchanges heat with circulating wind in the wind system through the air treatment unit 12, and the wind system supplies heat and refrigerates indoors;
the control system comprises a total control center 1, an outdoor temperature sensor 2, an operation mode converter 3, a fan frequency controller 4, an operation quantity controller 5 and a heat cold source temperature setter 6; the water system comprises a medium-level running water pump 25, a first-level running water pump 26, a cooler 8, a heater 7, a cold and hot energy distributor 9, a fault detection module 10, a PID controller 11, a water supply pipe flow sensor 18 and an electromagnetic valve 19; the wind system comprises a variable frequency wind supply fan 23, a wind supply pipe total pipeline flow sensor 27, a cold and hot energy distributor 9, a fault detection module 10, a PID controller 11, a wind valve 20, a wind supply pipe branch flow sensor 29, an indoor temperature sensor 28, a PIR passive infrared sensor 22, a wind return machine 24 and a wind return pipe temperature sensor 21;
the control center 1 is respectively connected with the outdoor temperature sensor 2, the running mode converter 3 and the fan frequency controller 4; the operation mode converter 3 is connected with an operation quantity controller 5; the fan frequency controller 4 is connected with the variable-frequency air supply fan 23; the hot and cold source temperature setting device 6 is respectively connected with the running number controller 5 and the return air pipe temperature sensor 21; the control center 1 is in wireless connection with the fault detection module 10 and the cold and heat quantity distributor 9 through a DIU;
the water supply pipe 13 of the water system is provided with at least one primary operation water pump 26, at least one heater 7, at least one cooler 8, at least one intermediate operation water pump 25, an electromagnetic valve 19 and a water supply pipe flow sensor 18 in sequence according to the water flow direction;
the bypass pipe 15 of the water system divides the water supply pipe 13 into a primary loop and a secondary loop, wherein the primary loop comprises a plurality of groups of heaters 7, a plurality of groups of coolers 8 and a plurality of groups of primary operation water pumps 26, the primary loop provides circulating power for the system, and meanwhile, the water flow of the primary loop can be operated in a stepwise change mode according to the number of the heaters 7 or the coolers 8; in order to avoid the fluctuation influence of the water flow of the primary loop on the load of the large-scale public building, a bypass pipe 15 is arranged to forward flow and backward flow to avoid the influence of the water flow of the primary loop on the secondary loop, the water flow of the secondary loop directly influences the load of the large-scale public building, when the end load is increased, the water flow required by the secondary loop is larger than that of the primary loop, at the moment, the water in the bypass pipe 15 flows reversely, and when the water demand of the secondary loop is smaller than that of the primary loop, the water in the bypass pipe flows forward to balance the flow difference of the primary loop and the secondary loop; the primary operation water pump 26, the cooler 7 and the heater 8 are all arranged on a primary loop water supply pipe; the medium-level running water pump 25, the electromagnetic valve 19 and the water supply pipe flow sensor 18 are all arranged on the secondary loop water supply pipe;
the operation quantity controller 5 is respectively connected with the heater 7, the cooler 8, the primary operation water pump 26 and the intermediate operation water pump 25, and controls the operation quantity of the operation quantity controller, so that the system can maintain the optimal efficiency and achieve the effect of economic operation by turning off and on the operation quantity of some heaters 7 or coolers 8; each stage of operation water pump 26 corresponds to one heater 7 or one cooler 8; the input end of the hot and cold energy distributor 9 is connected with the output end of the fault detection module 10, and the output end is connected with the PID controller 11; the input end of the fault detection module 10 is connected with a water supply pipe flow sensor 18, and the water supply pipe flow sensor 18 transmits a flow signal to the fault detection module 10 after the system operates; the output end of the PID controller 11 is connected with the electromagnetic valve 19, and the water supply pipe flow sensor 18 is connected with the input end of the PID controller 11 to form a feedback loop;
a variable frequency air supply fan 23 and an air supply pipe total flow sensor 27 are sequentially arranged on an air supply pipe 16 of the air system according to the wind direction; a return air pipe 17 of the air system is provided with a return air fan 24 and a return air pipe temperature sensor 21 in sequence according to the wind direction; each air supply pipe branch 30 of the air supply pipe 16 is sequentially provided with an air valve 20, an air supply pipe branch flow sensor 29 and a corresponding room according to the wind direction, and each room is internally provided with an indoor temperature sensor 28 and a PIR passive infrared sensor 22; the output end of the fault detection module 10 connected with the air supply pipe total flow sensor 27 is connected with the input end of the cold and hot quantity distributor 9; the output end of the fault detection module 10 connected with the indoor temperature sensor 28 and the PIR passive infrared sensor 22 is connected with the input end of the cold and hot energy distributor 9; the output end of the cold and hot air distributor 9 is connected with the input end of a PID controller 11 corresponding to each air supply pipe branch, and the PID controller 11 is regulated and controlled by the hot and cold air distributor 9; the output end of the PID controller 11 corresponding to each air supply pipe branch is respectively connected with the air valve 20 of each air supply pipe branch to control the opening and closing of the air valve 20; the air valve 20 is connected with an air supply pipe branch flow sensor 29; the air supply pipe branch flow sensor 29 is connected with the input end of the PID controller 11 to form a feedback loop.
The master controller 1 selects an operation mode by controlling the operation mode converter 3 through a preset program, drives the operation quantity controller 5 to control the operation quantity of the heater or the cooler according to the indoor required heat and cold load calculated by the outdoor temperature sensor 2, and changes the air quantity by controlling the fan frequency controller 4 to adjust the frequency of the variable-frequency air supply fan 23.
The heat and cold source temperature setter 6 sets the required heat and cold source temperature through the feedback of the public building return air temperature, and then transmits signals to the running number controller 5 to control the running number of the heaters or the coolers.
The PID controller 11 forms a feedback loop with the air valve 20 and the air supply pipe branch flow sensor 29 in the air system, the air supply pipe branch flow sensor 29 feeds back the numerical value to the PID controller 11 to compare with a set value, and the new input value is calculated and then fed into the room, so that the heat supply or refrigeration of the room is ensured to be more stable, and the influence of the external environment is avoided.
The heat and cold energy distributor 9 is used for distributing the required energy for the room. For different adjustments for different rooms, the signals transmitted through the indoor temperature sensor 28 and PIR passive infrared sensor 22 are adjusted differently for the respective actual indoor temperatures and the number of people in each room.
The fault detection module 10 is used for detecting whether various sensors have faults, if the sensors are normal in operation, the fault detection module 10 directly transmits data transmitted by the sensors to the heat and cold distributor 9, and if the sensors have faults, the fault detection module 10 operates an alarm mode so as to perform maintenance in time and ensure indoor comfort.
The PIR passive infrared sensor 22 is used for detecting the radiation quantity of human bodies to detect the number of people in a room and transmitting signals to the heat and cold quantity distributor 9 through the fault monitoring module 10 to adjust each room to the change condition of the number of people.
The fault detection module 10 comprises a normal operation history data storage module 101, a new data import module 102, a calculation module 103, a sub-relay 104 and a sub-DIU 105; the DIU105 has a wireless communication function; the input end of the calculation module 103 is connected with the normal operation history data storage module 101 and the new data import module 102, and the output end is connected with the sub-relay 104 and the sub-DIU 105; the sub-relay 104 is connected with the heat and cold energy distributor 9; the DIU105 is connected with the control center 1;
in the air system, the air supply pipe total flow sensor 27 is connected with the new data import module 102, the data is transmitted to the new data import module 102 and then is calculated with the history data of normal operation through the preset program of the calculation module 103, if the calculation result exceeds the preset threshold value, the air supply pipe total flow sensor 27 is proved to be faulty, the alarm mode is started to wirelessly transmit a fault signal to the total control center 1 through the DIU105, if the calculation value does not exceed the preset threshold value, the air supply pipe total flow sensor 27 is proved to be faulty, and the data is directly transmitted to the heat and cold distributor 9;
in the water system, the water supply pipe flow sensor 18 is connected with the new data import module 102, the data is transmitted to the new data import module 102, then the data is calculated with the history data of normal operation through the preset program of the calculation module 103, if the calculated result exceeds the preset threshold value, the water supply pipe flow sensor 18 is proved to be faulty, the alarm mode is started to wirelessly transmit the fault signal to the overall control center 1 through the DIU105, if the calculated value does not exceed the preset threshold value, the water supply pipe flow sensor 18 is proved to be not faulty, and the data is directly transmitted to the heat and cold distributor 9.
The heat and cold quantity distributor 9 comprises a microcomputer data calculation controller 901, a main relay 902 and a main DIU903; the input end of the microcomputer data calculation controller 901 is connected with the output end of the fault detection module 10, and the output end is respectively connected with the main relay 902 and the main DIU903; the main DIU903 is connected with the main control center 1; the main relay 902 is connected with the PID controller 11;
in the water system, the input end of the microcomputer data calculation controller 901 is connected with the output end of the fault detection module 10 connected with the water supply pipe flow sensor 18; the main relay 902 is connected with the PID controller 11 connected with the electromagnetic valve 19; after the data is transmitted to the fault detection module 10 by the water supply pipe flow sensor 18, if the water supply pipe flow sensor 18 fails, the data is further transmitted to the microcomputer data calculation controller 901 to calculate an input value, the opening of the electromagnetic valve 19 is controlled by the PID controller 11 to enable the flow to reach a set value, the set value is compared with an actual value by the PID controller 11, the difference is used for calculating a new input value, the opening of the electromagnetic valve 19 is adjusted, finally, circulating water is introduced into the air treatment unit 12, after the return air in a room enters the air treatment unit 12, the return air is mixed with fresh air, and after the treatment such as filtration, noise reduction, humidification and the like, the return air is subjected to heat exchange with the circulating water, and then the return air enters the air supply pipes 16 to enter each room for heating or cooling.
In the wind system, the input end of the microcomputer data calculation controller 901 is respectively connected with the output end of the fault detection module 10 connected with the air supply pipe total line flow sensor 27 and the output end of the fault detection module 10 connected with the indoor temperature sensor 28 and the PIR passive infrared sensor 22; the main relay 902 is connected with the PID controller 11 connected with the air valve 20; after the air supply pipe total flow sensor 27, the indoor temperature sensor 28 and the PIR passive infrared sensor 22 respectively transmit data to the fault detection module 10, if the air supply pipe total flow sensor 27, the indoor temperature sensor 28 and the PIR passive infrared sensor 22 fail, an alarm mode is started to wirelessly transmit the data to the total control center 1 through the main DIU903, and if the air supply pipe total flow sensor 27, the indoor temperature sensor 28 and the PIR passive infrared sensor 22 do not fail, the data are further transmitted to the microcomputer data calculation controller 901 to calculate the allocated heat and cold quantity (set value) of each room, and the opening of the air valve 20 is controlled by the PID controller 11 to enable the air quantity of each room to reach the set value; after the air quantity passes through the air valve 20, the numerical value of the air quantity is fed back to the PID controller 11 by the air supply pipe branch flow sensor 29 to be compared with a set value, and the new input value is calculated and then fed into a room, so that the heat supply or refrigeration of the room is ensured to be more stable; the room temperature is regulated after hot and cold air is supplied into each room, the indoor temperature sensor 28 transmits data to the hot and cold air distributor 9 in a feedback way, the air supply quantity of the corresponding room is regulated by the microcomputer numerical calculation controller 901 according to the actual indoor temperature change of each room to regulate the indoor temperature, and the data is recorded in real time and transmitted to the total control center 1 through the wireless communication of the main DIU903 to be stored as normal operation history data; each branch is combined into a return air pipe 17 after passing through each room, the data is fed back to the heat and cold source temperature setting device 6, and the heat and cold source temperature setting device 6 resets the heat and cold source temperature through the numerical value transmitted by the return air pipe temperature sensor 21.
The application relates to a working principle and a working flow of an energy-saving air conditioning system which is self-adaptive and can be controlled by areas of a large public building, wherein the working principle and the working flow are as follows:
the working principle is as follows: the main control center 1 judges whether the seasonal change controls the operation mode converter 3 to select the operation heating mode or the cooling mode according to the signal transmitted by the outdoor temperature sensor 2; when the operation mode is selected, the operation number of the heater 7 or the cooler 8 and the operation numbers of the primary operation water pump 26 and the intermediate operation water pump 25 are selected by the operation number controller 5 according to the required heat and cold load, and the operation is still kept at the optimal efficiency by shutting down and starting the operation numbers of some heaters 7 or coolers 8, so that the effect of economic operation is achieved;
when the indoor required heat and cold load changes, the return air pipe temperature sensor 21 transmits signals to the heat and cold temperature setter 6 to reset the heat and cold temperature, the heat and cold temperature setter 6 transmits temperature signals to the operation number controller 5 to adjust the operation number of the heater 7 or the cooler 8 and the middle-stage operation water pump 25 again
The working flow is as follows: the main control center 1 judges whether the seasonal change controls the operation mode converter 3 to select the operation heating mode or the cooling mode according to the signal transmitted by the outdoor temperature sensor 2;
when a heating mode is selected, the heater 7 is started, the running number of the heater 7, the primary running water pump 26 and the intermediate running water pump 25 which are started to run is controlled by the running number controller 5 according to the required heat load, circulating water is conveyed to the heater 7 by the primary running water pump 26 to be heated in the heating process, then conveyed by the intermediate running water pump 25, and enters the air treatment unit 12 through the electromagnetic valve 19 to heat mixed wind and then returns to the water return pipe 14 to complete circulation; simultaneously, indoor return air and fresh air are mixed, filtered, heated and humidified in a mixing area in the air treatment unit 12 and then are sent to the air supply pipe 16, the working frequency of the variable frequency air supply fan 23 is regulated and controlled by the fan frequency controller 4 according to the change of the heat load to adjust the air quantity, then the air quantity value is transmitted to the hot and cold quantity distributor 9 through the water supply pipe flow sensor 18 to carry out heat calculation and distribution according to the number and the space size of rooms, the opening degree of the air valve 20 is regulated through the PID controller 11 to send the hot air to different rooms through each air supply pipe branch 30, and if one room is lower than or higher than the preset temperature or the number of people changes, the data is transmitted to the hot and cold quantity distributor 9 through the indoor temperature sensor 28 and the PIR passive infrared sensor 22, and the air valve 20 opening degree of the room air supply pipe branch 30 is regulated through the PID controller 11 corresponding to the room to adjust the temperature so that the indoor actual temperature reaches the preset level; after the hot air supplies heat to the indoor space, the hot air enters the air treatment unit 12 again through the return air pipe 17 and is mixed with the fresh air according to a set proportion to continuously supply heat to each room;
when a refrigeration mode is selected, the cooler 8 is started, the running number of the cooler 8, the primary running water pump 26 and the middle running water pump 25 which are started to run is selected by the running number controller 5 according to the required cold load, circulating water in the refrigeration process is conveyed into the cooler 8 by the primary running water pump 26 to be cooled, then is conveyed by the middle running water pump 25, enters the air treatment unit 12 through the electromagnetic valve 19 to refrigerate mixed wind, and returns to the water return pipe 14 to complete circulation; simultaneously, indoor return air and fresh air are mixed, filtered, cooled and humidified in a mixing area in the air treatment unit 12 and then are sent into the air supply pipe 16, the working frequency of the variable frequency air supply fan 23 can be regulated and controlled by the fan frequency controller 4 according to the change amount of cold load to adjust the air quantity, then the air quantity value is transmitted into the hot and cold air quantity distributor 9 through the total air supply pipe flow sensor 27 to be subjected to heat calculation distribution according to the number and the space size of rooms, the opening degree of the air supply pipe 20 is adjusted through the PID controller 11 to send cold air into different rooms through each air supply pipe branch 30, and if one room is lower than or higher than the preset temperature or the number of people changes, data are transmitted into the hot and cold air quantity distributor 9 through the indoor temperature sensor 28 and the PIR passive infrared sensor 22, and the opening degree of the air valve 20 of the room air supply pipe branch 30 can be adjusted through the PID controller 11 corresponding to the room to adjust the temperature so that the indoor actual temperature reaches the preset level; after the indoor cooling is performed, the cold air enters the air treatment unit 12 again through the return air pipe 17 and is mixed with the fresh air according to a set proportion, so that the cooling of each room is continued.
The application is applicable to the prior art where it is not described.
Claims (3)
1. The self-adaptive energy-saving air conditioning system capable of being controlled in different areas for a large public building is characterized by comprising a control system, a water system, a wind system and an air treatment unit; the water system exchanges heat with circulating wind in the wind system through the air treatment unit, and the wind system supplies heat and refrigerates indoors;
the control system comprises a total control center, an outdoor temperature sensor, an operation mode converter, a fan frequency controller, an operation quantity controller and a heat and cold source temperature setter; the water system comprises a medium-level operation water pump, a first-level operation water pump, a cooler, a heater, a heat and cold energy distributor, a fault detection module, a PID controller, a water supply pipe flow sensor and an electromagnetic valve; the wind system comprises a variable frequency wind supply machine, a wind supply pipe total pipeline flow sensor, a heat and cold quantity distributor, a fault detection module, a PID controller, a wind valve, a wind supply pipe branch flow sensor, an indoor temperature sensor, a PIR passive infrared sensor, a return wind machine and a return wind pipe temperature sensor;
the control center is respectively connected with the outdoor temperature sensor, the running mode converter and the fan frequency controller; the operation mode converter is connected with the operation quantity controller; the fan frequency controller is connected with the variable-frequency air supply fan; the heat and cold source temperature setter is respectively connected with the running number controller and the return air pipe temperature sensor; the control center is in wireless connection with the fault detection module and the heat and cold energy distributor through a DIU;
at least one primary operation water pump, at least one heater, at least one cooler, at least one intermediate operation water pump, an electromagnetic valve and a water supply pipe flow sensor are sequentially arranged on a water supply pipe of the water system according to the water flow direction; the bypass pipe of the water system divides the water supply pipe into a primary loop and a secondary loop, wherein the primary loop comprises a plurality of groups of heaters, a plurality of groups of coolers and a plurality of groups of primary operation water pumps; the primary operation water pump, the cooler and the heater are all arranged on a primary loop water supply pipe; the medium-level operation water pump, the electromagnetic valve and the water supply pipe flow sensor are all arranged on the secondary loop water supply pipe; the cooler and the heater are arranged in parallel;
the running number controller is respectively connected with the heater, the cooler, the primary running water pump and the intermediate running water pump, and controls the running number of the primary running water pump and the intermediate running water pump; each stage of operation water pump corresponds to a heater or a cooler; the input end of the hot and cold energy distributor is connected with the output end of the fault detection module, and the output end is connected with the PID controller; the input end of the fault detection module is connected with a water supply pipe flow sensor; the output end of the PID controller is connected with the electromagnetic valve, and the flow sensor of the water supply pipe is connected with the input end of the PID controller to form a feedback loop;
a variable-frequency air supply machine and a total pipeline flow sensor of the air supply pipe are sequentially arranged on the air supply pipe of the air system according to the wind direction; a return air pipe of the air system is provided with a return air fan and a return air pipe temperature sensor in sequence according to the wind direction; each air supply pipe branch of the air supply pipe is sequentially provided with an air valve, an air supply pipe branch flow sensor and a corresponding room according to the wind direction, and each room is internally provided with an indoor temperature sensor and a PIR passive infrared sensor; the output end of the fault detection module connected with the air supply pipe total line flow sensor is connected with the input end of the heat and cold quantity distributor; the output end of the fault detection module connected with the indoor temperature sensor and the PIR passive infrared sensor is connected with the input end of the heat and cold distributor; the output end of the hot and cold energy distributor is connected with the input end of the PID controller corresponding to each air supply pipe branch; the output end of the PID controller corresponding to each air supply pipe branch is respectively connected with the air valve of each air supply pipe branch; the air valve is connected with the air supply pipe branch flow sensor; the branch flow sensor of the air supply pipe is connected with the input end of the PID controller to form a feedback loop.
2. The self-adaptive zoned-controllable energy-saving air conditioning system for the large public building according to claim 1, wherein the fault detection module comprises a normal operation history data storage module, a new data import module, a calculation module, a sub-relay and a sub-DIU; the DIU has a wireless communication function; the input end of the calculation module is connected with the normal operation history data storage module and the new data import module, and the output end of the calculation module is connected with the sub-relay and the sub-DIU; the branch relay is connected with the heat and cold energy distributor; the DIU is connected with the control center; in the wind system, the air supply pipe total line flow sensor is connected with a new data importing module; in the water system, the water supply pipe flow sensor is connected with a new data import module.
3. The self-adaptive zoned-controllable energy-saving air conditioning system for large public buildings according to claim 1, wherein the heat and cold energy distributor comprises a microcomputer data calculation controller, a main relay and a main DIU; the input end of the microcomputer data calculation controller is connected with the output end of the fault detection module, and the output end is respectively connected with the main relay and the main DIU; the main DIU is connected with the main control center; the main relay is connected with the PID controller;
in the water system, the input end of the microcomputer data calculation controller is connected with the output end of the fault detection module connected with the water supply pipe flow sensor; the main relay is connected with a PID controller connected with the electromagnetic valve;
in the wind system, the input end of the microcomputer data calculation controller is respectively connected with the output end of the fault detection module connected with the air supply pipe total line flow sensor and the output end of the fault detection module connected with the indoor temperature sensor and the PIR passive infrared sensor; and the main relay is connected with a PID controller connected with the air valve.
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| CN111197846A (en) * | 2019-12-31 | 2020-05-26 | 国网河北省电力有限公司雄安新区供电公司 | Self-adaptive adjusting method and system for cold and heat load in building |
| CN114413360A (en) * | 2021-12-31 | 2022-04-29 | 威乐(中国)水泵系统有限公司 | Hydraulic module |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101256781B1 (en) * | 2013-01-24 | 2013-04-25 | (주)새한공조 | Hybrid air condition system with indirectness load control mode |
| WO2013149507A1 (en) * | 2012-04-06 | 2013-10-10 | Tan Zhongxi | Central air conditioning system and control method therefor |
| CN104748278A (en) * | 2015-04-01 | 2015-07-01 | 江南大学 | Water-loop heat pump system provided with circulating water coil internally and operation method thereof |
| CN105240958A (en) * | 2015-11-04 | 2016-01-13 | 杭州绿程节能科技有限公司 | Dual-cold-source three-pipe-system air conditioner system |
| CN105737284A (en) * | 2016-03-02 | 2016-07-06 | 杭州源牌环境科技有限公司 | Pipe network balance distribution and variable flow control method of air conditioner water system |
| CN106152318A (en) * | 2016-08-22 | 2016-11-23 | 苏州市创建空调设备有限公司 | A kind of varying duty regulation integral system based on cooling water bus and operation method |
| CN206281067U (en) * | 2016-12-13 | 2017-06-27 | 大象建筑设计有限公司 | A kind of new two control air-conditioning system for realizing simultaneous air-conditioning |
| CN207881099U (en) * | 2018-02-10 | 2018-09-18 | 河北工业大学 | A kind of energy-saving air conditioning system of the adaptive separated regions control of large public building |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6792766B2 (en) * | 2002-10-04 | 2004-09-21 | Cascade Manufacturing, L.P. | Zone demand controlled dual air conditioning system and controller therefor |
| US10088178B2 (en) * | 2015-05-05 | 2018-10-02 | MJC, Inc. | Multi-zone variable refrigerant flow heating/cooling unit |
-
2018
- 2018-02-10 CN CN201810137807.8A patent/CN108151235B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013149507A1 (en) * | 2012-04-06 | 2013-10-10 | Tan Zhongxi | Central air conditioning system and control method therefor |
| KR101256781B1 (en) * | 2013-01-24 | 2013-04-25 | (주)새한공조 | Hybrid air condition system with indirectness load control mode |
| CN104748278A (en) * | 2015-04-01 | 2015-07-01 | 江南大学 | Water-loop heat pump system provided with circulating water coil internally and operation method thereof |
| CN105240958A (en) * | 2015-11-04 | 2016-01-13 | 杭州绿程节能科技有限公司 | Dual-cold-source three-pipe-system air conditioner system |
| CN105737284A (en) * | 2016-03-02 | 2016-07-06 | 杭州源牌环境科技有限公司 | Pipe network balance distribution and variable flow control method of air conditioner water system |
| CN106152318A (en) * | 2016-08-22 | 2016-11-23 | 苏州市创建空调设备有限公司 | A kind of varying duty regulation integral system based on cooling water bus and operation method |
| CN206281067U (en) * | 2016-12-13 | 2017-06-27 | 大象建筑设计有限公司 | A kind of new two control air-conditioning system for realizing simultaneous air-conditioning |
| CN207881099U (en) * | 2018-02-10 | 2018-09-18 | 河北工业大学 | A kind of energy-saving air conditioning system of the adaptive separated regions control of large public building |
Non-Patent Citations (1)
| Title |
|---|
| 海口市某高级酒店全年运行能耗统计与分析;赵灵;陈立刚;杨友照;白云鹏;杨宾;;节能(第10期);全文 * |
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