CN201003835Y - A central air-conditioning system energy-saving control device - Google Patents
A central air-conditioning system energy-saving control device Download PDFInfo
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- CN201003835Y CN201003835Y CNU2006201119470U CN200620111947U CN201003835Y CN 201003835 Y CN201003835 Y CN 201003835Y CN U2006201119470 U CNU2006201119470 U CN U2006201119470U CN 200620111947 U CN200620111947 U CN 200620111947U CN 201003835 Y CN201003835 Y CN 201003835Y
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- 238000004378 air conditioning Methods 0.000 title abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 75
- 239000000498 cooling water Substances 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 239000008236 heating water Substances 0.000 claims description 11
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 4
- 239000001569 carbon dioxide Substances 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 230000008014 freezing Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Air Conditioning Control Device (AREA)
Abstract
本实用新型涉及一种中央空调系统节能控制装置，包括控制器、与控制器联接的人机界面、输入装置、输出装置、分水器动态流量控制阀和变频控制装置，变频控制装置分别连接控制空调主机及各系统，其特征在于：在空调主机的冷冻水进出水口、冷却水进出水口设有温度传感器，在冷冻水系统的分水器的动态流量控制阀出水口和集水器回水口设温度传感器，在室内、室外设有温度传感器，在室内还设有二氧化碳浓度传感器，在冷冻水最不利环路处设有流量传感器。本实用新型有效地控制空调主机、冷冻水泵和冷却水泵的运行、冷冻系统的整体流量、冷却塔风机的运行频率，提高节能效果。
The utility model relates to an energy-saving control device for a central air-conditioning system, which comprises a controller, a man-machine interface connected with the controller, an input device, an output device, a dynamic flow control valve of a water separator, and a frequency conversion control device. The air conditioner main unit and various systems are characterized in that temperature sensors are installed at the chilled water inlet and outlet and cooling water inlet and outlet of the air conditioner main unit, and the water outlet of the dynamic flow control valve of the water separator of the chilled water system and the return water port of the water collector are provided with temperature sensors. The temperature sensor is equipped with temperature sensors indoors and outdoors, a carbon dioxide concentration sensor is also installed indoors, and a flow sensor is installed at the most unfavorable loop of chilled water. The utility model effectively controls the operation of the air conditioner main engine, the freezing water pump and the cooling water pump, the overall flow rate of the freezing system, and the operating frequency of the fan of the cooling tower, thereby improving the energy-saving effect.
Description
Technical field
The utility model relates to a kind of central air conditioner system control device, is specifically related to a kind of central air conditioner system energy-saving control device.
Background technology
Central air-conditioning generally includes air-conditioner host, chilled water system, cooling water system, exhaust system, air return system, VMC and blower fan of cooling tower system.Because during design, central air-conditioning must add safety coefficient again, and in fact overwhelming majority time air-conditioning be can not operate under the full load condition by the maximum situation design of load, according to relevant departments statistics, it is following that central air conditioner system has time of 85% to run on underload.Present case is that most of central air conditioner systems all adopt constant flow, constant air volume system, often occur air quantity, the excessive situation of the water yield when underload, cause the waste of energy.As seen, there is bigger waste in present central air conditioner system, and therefore energy-conservation potentiality are bigger.
Frequency converter can be adjusted rotating speed of motor according to chilled water pump, cooling water pump and blower fan system load variations, makes water pump and blower fan make corresponding adjusting under the situation that satisfies the central air-conditioning operate as normal, to reach energy-conservation purpose.The air conditioner water pump frequency conversion energy-saving control device that has, it is respectively arranged with temperature sensor at chilled water import and export and cooling water import and export, utilize the temperature approach of chilled water import and export and cooling water import and export to compare, control the running frequency of water pump with setting temperature approach.This structure can according to circumstances be adjusted the rotating speed of pump motor, plays certain energy-conserving action.But, the ruuning situation of central air-conditioning, its influence factor is many-sided, and air-conditioning system is a nonlinear system, and simple temperature difference differential pressure is regulated and can not be reached good effect, if control the bad transfer that also can cause system capacity.Therefore, be necessary the central air-conditioning total system is carried out Based Intelligent Control, to reach best control and energy-saving effect.
Summary of the invention
The purpose of this utility model provides a kind of central air conditioner system energy-saving control device, by the effective Detection ﹠ Controling to the central air-conditioning each several part, reaches energy-conservation, improves the control effect, prolongs the central air conditioner system service life of equipment.
A kind of central air conditioner system energy-saving control device described in the utility model, comprise controller, the man-machine interface that connects with controller, input unit, output device, water knockout drum dynamic flow control valve and frequency-converting control device, frequency-converting control device connects the control air-conditioner host respectively, chilled water pump, cooling water pump, the heating water pump, the blower fan of cooling tower system, VMC, exhaust system and air return system, it is characterized in that: the chilled water water inlet at air-conditioner host is provided with first temperature sensor, the chilled water delivery port is provided with second temperature sensor, cooling water intake at air-conditioner host is provided with three-temperature sensor, cooling water outlet is provided with the 4th temperature sensor, dynamic flow control valve delivery port at the water knockout drum of chilled water system is provided with the 5th temperature sensor, water collector water return outlet in chilled water system is provided with the 6th temperature sensor, at indoor the 7th temperature sensor that is provided with, at outdoor the 8th temperature sensor that is provided with, at the indoor gas concentration lwevel sensor that also is provided with, the place is provided with flow sensor at the chilled water index circuit; First to the 8th temperature sensor, gas concentration lwevel sensor and flow sensor connect with input unit; Controller carries out being connected to by the output interface of output device after the computing comparison process input port of frequency-converting control device by the signal to input unit input.
Control software is installed in the controller, can realize analyzing and processing to each sensor signal, produce feedback control signal according to setting value, with the action of the frequency-converting control device of controlling air-conditioner host, chilled water pump, cooling water pump, blower fan of cooling tower, heating water pump, exhaust system, air return system and VMC respectively and the open degree of rationally adjusting dynamic flow control valve on the water knockout drum according to system's actual load situation.
The man-machine interface that controller connects is utilized software and database setting, can realize optimizing control.
Frequency-converting control device is used to handle each executing agency of central air-conditioning, comprise a plurality of frequency converters and relevant control circuit, respectively air-conditioner host, chilled water pump, cooling water pump, blower fan of cooling tower, heating water pump, exhaust system, air return system and VMC are realized VFC, rationally adjusted the open degree of dynamic flow control valve on the water knockout drum, reach the purpose of unsteady flow amount, variable air volume running.
The controller of described a kind of central air conditioner system energy-saving control device also is provided with the network interface that remote control computer connects.Controller also can communicate with remote control computer.Utilize software and database setting, can realize optimizing control.Be provided with network interface in remote control computer, this network interface can be a LAN adapter, also can be the telephone dialing Internet device, or can realize other device of communication by network.By network interface, this device can communicate with remote control computer equipment, provides data message for analysis to remote control computer equipment, perhaps receives the control parameter from remote control computer equipment.
The utility model is to the integral body control of central air-conditioning, and its each several part course of work is as follows:
(1) chilled water loop:
Determine the minimum running frequency of a chilled water earlier according to freezing loop characteristics, the assurance system is normal, safe operation.When load changes, chilled water supply and return water temperature sensor, the water knockout drum temperature sensor, the water collector temperature sensor, indoor temperature transmitter and terminal flow sensor are delivered to controller with detected these parameters by input unit, controller is according to the real time data of being gathered, the history data of meteorological data and system, calculate the required refrigerating capacity of air conditioner load in real time, and freezing supply and return water temperature, the optimum value of the temperature difference, utilize these values and present operational factor to compare, rationally adjust the open degree of water knockout drum dynamic flow control valve, and regulate the frequency converter output frequency with this, the rotating speed of control chilled water pump changes the supply and return water temperature that its flow makes chilled water system, the flow of the temperature difference and each subregion operates in the optimal value that controller provides.
(2) heating water loops:
Determine the minimum running frequency of a heating water earlier according to the heating loop characteristics, the assurance system is normal, safe operation.When load changes, heating water supply and return water temperature sensor, the water knockout drum temperature sensor, the water collector temperature sensor, indoor temperature transmitter and terminal flow sensor are delivered to controller with detected these parameters by input unit, controller is according to the real time data of being gathered, the history data of meteorological data and system, calculate the required actual load of load in real time, and heating supply and return water temperature, the optimum value of the temperature difference, utilize these values and present operational factor to compare, rationally adjust the open degree of water knockout drum dynamic flow control valve, and regulate the frequency converter output frequency with this, the rotating speed of control heating water pump changes the supply and return water temperature that its flow makes the heating water system, the flow of the temperature difference and each subregion operates in the optimal value that controller provides.
(3) cooling water loop:
Determine the minimum running frequency of a cooling water pump earlier according to the cooling system characteristic, the cooling water water inlet is the highest, minimum temperature guarantees system safety operation.When environment temperature and system loading change, the load of central air conditioner main machine will change thereupon, and the best condensation temperature of main condenser also changes thereupon.Controller is according to the cooling water Inlet and outlet water temperature of being gathered and the history data of outdoor temperature real time data and system, calculate the optimum temperature of main condenser, and the best inlet temperature of cooling water, and compare with this temperature and actual motion temperature, and regulate the output frequency of cooling water pump frequency converter with this, the control cooling water pump, the flow of dynamic adjustments cooling water, make the inlet temperature of cooling water approach the optimal value that controller provides, thereby guarantee that central air conditioner main machine is in operation under the optimal conversion efficiency state at any time.
Because cooling water system adopts optimal conversion efficiency control, guaranteed that central air conditioner main machine is under the situation of full load and sub-load, all be in optimum Working, remain best energy utilization rate, thereby reduced the energy consumption of air-conditioner host, because the system loading optimizing of adopting control has avoided the energy of host computer system to shift, and moves because of cooling water pump is lower than under the rated load through being everlasting simultaneously, has also saved the energy consumption of cooling water pump to greatest extent.
(4) variable air volume system of exhaust system, air return system and new blower fan:
Determine the minimum running frequency of a blower fan earlier according to the blower fan system characteristic, guarantee system safety operation.When indoor temperature, indoor carbon dioxide concentration and load change, indoor temperature transmitter, outdoor temperature sensor and gas concentration lwevel sensor are delivered to controller with detected these parameters, controller is according to the real time data of being gathered and the history data of system, calculate the required air quantity of air conditioner load in real time, and the optimum value of design temperature, and regulate the frequency converter output frequency with this, the rotating speed of control blower fan changes its air quantity and makes indoor temperature operate in the optimal value that controller provides.
(5) blower fan of cooling tower control system:
Determine the minimum running frequency of a blower fan earlier according to the cooling tower system performance, guarantee system safety operation.When outdoor temperature, cooling water turnover temperature and air conditioner load change, outdoor temperature sensor and cold in-water temperature sensor are delivered to controller, controller is according to real time data of being gathered and historical data, calculate the cold in-water temperature value that meets main frame operating mode needs, and regulate the frequency converter output frequency with this, the control rotation speed of fan obtains good energy-saving effect.
(6) water knockout drum dynamic flow control valve control system:
Determine a minimum discharge earlier according to the air-conditioning system characteristic, guarantee system safety operation.When control area temperature, cold water turnover temperature and air conditioner load change, the data that dynamic flow temperature sensor and chilled water inflow temperature sensor will detect are in real time delivered to controller, controller is according to real time data of being gathered and historical data, calculate and meet the needed chilled water flow value of control area operating mode, and regulate the open degree of dynamic flow control valve with this, obtain good energy-saving effect.
Simultaneously, under the situation by the remote control computer networking, this device is except realizing Automatic Control, and timed power on/off, main frame, water pump, blower fan and the co-ordination of dynamic flow control valve can also realize Long-distance Control.At this moment, can set up database for air-conditioning system, by the data analysis center of far-end, analyze real time data and historical data, constantly be analyzed, and constantly adjust, power savings is better.
The utility model has following advantage compared with prior art:
(1) the utility model is provided with indoor temperature transmitter and indoor carbon dioxide sensor, can realize VFC on the one hand to exhaust system, air return system and new blower fan system, realize energy-conservation and more comfortable environment is provided, on the other hand, can more effectively control air-conditioner host, the operation of chilled water pump and cooling water pump improves energy-saving effect;
(2) the utility model is provided with dynamic flow control valve temperature sensor, can realize on the one hand flow-control, realize energy-conservation and more comfortable environment is provided, on the other hand each subregion, can more effectively control the whole flow of refrigeration system, better improve energy-saving effect;
(3) the utility model is in the cooling water loop, by a temperature sensor being set outdoor, cooling water inlet is provided with a temperature sensor, utilize characteristic and the historical data of outdoor temperature situation and the load condition of main frame of cooling water loop, analyze the optimum temperature value of cooling water water inlet, control the operating load of adjusting cooling water pump, compare better effects if with pressure differential method control cooling water pump with adopting temperature differential method control;
(4) the utility model is in the cooling tower system, by a temperature sensor being set outdoor, cooling water inlet is provided with a temperature sensor, utilize the historical data of cooling water temperature situation and outdoor temperature situation and the load condition of main frame, analyze the optimum temperature value of cooling water water inlet, control the running frequency of adjusting blower fan of cooling tower, improve the energy-saving effect of cooling tower system;
(5) the utility model controller can connect the both-way communication of remote control computer, thereby can realize Long-distance Control, thus, can realize by monitoring system software and the powerful software control system of historical data base composition function, be in operation, constantly improve and enrich its Database Systems, and then analyze, revise operational factor, accomplish optimal control results.
Description of drawings
Fig. 1 is the schematic block diagram that the utility model central air conditioner system connects.
Fig. 2 is a circuit diagram of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples the utility model device is further described:
Embodiment one: referring to Fig. 1 and Fig. 2, the controller 1 of present embodiment is selected the CPU224 of Siemens for use, input unit is selected EM231 for use, output device is selected EM232 for use, frequency-converting control device is selected ACS800 for use, and man-machine interface is selected PWS6800C-P for use, and first to the 8th temperature sensor is all selected 902105/30PT1000 for use, carbon dioxide sensor is selected ESENSECO2 for use, and flow sensor is selected LUGB-2004 for use.
Man-machine interface 2, input unit 3, output device 4, water knockout drum dynamic flow control valve 5 and frequency-converting control device 6 are connected with controller 1 respectively,
Control air-conditioner host 7, chilled water pump 8, cooling water pump 9, heating water pump 10, blower fan of cooling tower system 11, VMC 12, exhaust system 13 and air return system 14 that frequency-converting control device 6 connects central air conditioner system respectively connect;
The chilled water water inlet, second temperature sensor 16 that first temperature sensor 15 are installed in air-conditioner host 7 are installed in the chilled water delivery port;
The cooling water intake, the 4th temperature sensor 18 that three-temperature sensor 17 are installed in air-conditioner host 7 are installed in cooling water outlet;
The 5th temperature sensor 19 is installed in the dynamic flow control valve delivery port of the water knockout drum of chilled water system, the 6th temperature sensor 20 is installed in the water collector water return outlet of chilled water system;
The 7th temperature sensor 21 is installed in indoor, the 8th temperature sensor 22 to be installed in outdoor;
Be installed in gas concentration lwevel sensor 23 indoor;
First to the 8th temperature sensor, gas concentration lwevel sensor 23 and flow sensor 24 are connected with input unit 3; Controller 1 carries out after the computing comparison process output interface by output device 4 by the signal to input unit 3 input and is connected to VFC and adorns 6 input ports of putting and get final product.
The utility model device is when real work, also must include software control system, this control system comprises control software, detect software, application software and historical data base, control software wherein, detect software, application software stores is in the chip of controller, can realize the real-time dynamic analysis process of the analysis of each sensor signal, produce feedback control signal according to the optimizing value, to control air-conditioner host respectively, chilled water pump, cooling water pump, the heating water pump, exhaust system, air return system, the open degree of the action of the frequency-converting control device of VMC and blower fan of cooling tower system and dynamic flow control valve, its state and optimizing value can observe on remote control computer or man-machine interface and be provided with, but time recording related data also, so that adopt the continuous automatic optimal analysis of system program, adjust operational factor, further improve energy-saving efficiency.
Embodiment two: referring to Fig. 1 and Fig. 2, present embodiment connects the network interface on the controller 1 and to get final product on the basis of embodiment one with remote control computer 25.
Claims (2)
1. central air conditioner system energy-saving control device, comprise controller (1), the man-machine interface that connects with controller (2), input unit (3), output device (4), water knockout drum dynamic flow control valve (5) and frequency-converting control device (6), frequency-converting control device connects control air-conditioner host (7) respectively, chilled water pump (8), cooling water pump (9), heating water pump (10), blower fan of cooling tower system (11), VMC (12), exhaust system (13) and air return system (14), it is characterized in that: the chilled water water inlet at air-conditioner host (7) is provided with first temperature sensor (15), the chilled water delivery port is provided with second temperature sensor (16), cooling water intake at air-conditioner host (7) is provided with three-temperature sensor (17), cooling water outlet is provided with the 4th temperature sensor (18), dynamic flow control valve delivery port at the water knockout drum of chilled water system is provided with the 5th temperature sensor (19), water collector water return outlet in chilled water system is provided with the 6th temperature sensor (20), at indoor the 7th temperature sensor (21) that is provided with, at outdoor the 8th temperature sensor (22) that is provided with, at the indoor gas concentration lwevel sensor (23) that also is provided with, be provided with flow sensor (24) at chilled water index circuit place; First to the 8th temperature sensor, gas concentration lwevel sensor and flow sensor connect with input unit (3); Controller (1) carries out after the computing comparison process output interface by output device (4) by the signal to input unit (3) input and is connected to VFC and adorns the input port that put (6).
2, a kind of central air conditioner system energy-saving control device according to claim 1, it is characterized in that: described controller (1) also is provided with the network interface that connects with remote control computer (25).
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2006201119470U CN201003835Y (en) | 2006-12-12 | 2006-12-12 | A central air-conditioning system energy-saving control device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2006201119470U CN201003835Y (en) | 2006-12-12 | 2006-12-12 | A central air-conditioning system energy-saving control device |
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| CN201003835Y true CN201003835Y (en) | 2008-01-09 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988728A (en) * | 2010-11-24 | 2011-03-23 | 东南大学 | Central air-conditioning control system combining radiation terminal cooling and warming and fresh air |
| CN101581491B (en) * | 2009-06-12 | 2012-06-13 | 重庆贻科科技有限公司 | Load control energy-saving system of central air conditioning system |
| CN103047714A (en) * | 2013-01-07 | 2013-04-17 | 无锡永信能源科技有限公司 | Bi-directional flow matching system and bi-directional flow matching method for end and host of central air-conditioner |
| CN103047739A (en) * | 2012-12-28 | 2013-04-17 | 无锡博欧节能科技有限公司 | Intelligent central ventilation system and remote automatic batch software updating method |
| CN101551151B (en) * | 2008-03-31 | 2013-09-25 | 阿自倍尔株式会社 | Flow control system |
| CN104896678A (en) * | 2015-06-19 | 2015-09-09 | 郑州轻工业学院 | Intelligent control system of water chilling unit |
| CN106196515A (en) * | 2016-08-31 | 2016-12-07 | 深圳达实智能股份有限公司 | The energy efficiency controlling method of central air conditioner system and device |
| CN108731189A (en) * | 2017-04-13 | 2018-11-02 | 易微电（天津）科技发展有限公司 | A kind of continuous Operation Optimization Systerm of central air-conditioning and method |
| CN109654665A (en) * | 2018-12-14 | 2019-04-19 | 广东美的暖通设备有限公司 | The control method and device and air conditioner of air conditioner |
| CN110118426A (en) * | 2019-05-31 | 2019-08-13 | 同方泰德国际科技(北京)有限公司 | A kind of cooling tower group control device suitable for subway station |
-
2006
- 2006-12-12 CN CNU2006201119470U patent/CN201003835Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551151B (en) * | 2008-03-31 | 2013-09-25 | 阿自倍尔株式会社 | Flow control system |
| CN101581491B (en) * | 2009-06-12 | 2012-06-13 | 重庆贻科科技有限公司 | Load control energy-saving system of central air conditioning system |
| CN101988728A (en) * | 2010-11-24 | 2011-03-23 | 东南大学 | Central air-conditioning control system combining radiation terminal cooling and warming and fresh air |
| CN103047739A (en) * | 2012-12-28 | 2013-04-17 | 无锡博欧节能科技有限公司 | Intelligent central ventilation system and remote automatic batch software updating method |
| CN103047739B (en) * | 2012-12-28 | 2015-06-03 | 无锡博欧节能科技有限公司 | Intelligent central ventilation system and remote automatic batch software updating method |
| CN103047714B (en) * | 2013-01-07 | 2015-09-30 | 无锡永信能源科技有限公司 | Tail end of central air conditioner and main frame bidirectional traffics matching system and matching process thereof |
| CN103047714A (en) * | 2013-01-07 | 2013-04-17 | 无锡永信能源科技有限公司 | Bi-directional flow matching system and bi-directional flow matching method for end and host of central air-conditioner |
| CN104896678A (en) * | 2015-06-19 | 2015-09-09 | 郑州轻工业学院 | Intelligent control system of water chilling unit |
| CN106196515A (en) * | 2016-08-31 | 2016-12-07 | 深圳达实智能股份有限公司 | The energy efficiency controlling method of central air conditioner system and device |
| CN108731189A (en) * | 2017-04-13 | 2018-11-02 | 易微电（天津）科技发展有限公司 | A kind of continuous Operation Optimization Systerm of central air-conditioning and method |
| CN108731189B (en) * | 2017-04-13 | 2021-01-26 | 易微电（天津）科技发展有限公司 | Central air conditioner continuous tuning system and method |
| CN109654665A (en) * | 2018-12-14 | 2019-04-19 | 广东美的暖通设备有限公司 | The control method and device and air conditioner of air conditioner |
| CN110118426A (en) * | 2019-05-31 | 2019-08-13 | 同方泰德国际科技(北京)有限公司 | A kind of cooling tower group control device suitable for subway station |
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