CN102679649B - Energy conservation control device and energy conservation control method of refrigerating system - Google Patents
Energy conservation control device and energy conservation control method of refrigerating system Download PDFInfo
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Abstract
The invention discloses an energy conservation control device and an energy conservation control method of a refrigerating system. The device provided by the invention comprises a control unit and a plurality of temperature or pressure sensors; a plurality of temperature or pressure sensors are arranged on an output pipeline of the refrigerating system; the control unit comprises a data analyzing unit used for analyzing operating efficiency of the system, a mathematical model unit used for computing change trend of the operating efficiency, an operating path planning unit used for figuring out an optimal efficiency operating plan and an information receiving module used for being connected with the units and a plurality of temperature or pressure sensors; and the operating path planning unit controls the operation of a corresponding compressor in accordance with the optical efficiency operating plan. The energy conservation control device and the energy conservation control method of the refrigerating system adopt dynamic entropy valve equalization algorithm, so as to plan and operate the compressor in different energy efficiency values, build the mathematical model and achieve the effect of power saving.
Description
Technical field
The present invention relates to a kind of control device and method of refrigeration system, in particular a kind of based on additional air conditioner energy saving controller hardware and the software control implementation method thereof of installing of existing refrigeration system.
Background technology
In refrigeration system of the prior art; as air-conditioning system and cold storage refrigerating system; operated by rotary motion comprises: the parts such as refrigeration unit system, refrigerant-cycle systems, water circulation system, electrical equipment auto-control protective system, heat exchanger, chilled water pump, cooling system; as shown in Figure 1, be the common refrigeration system schematic diagram of prior art.
In current refrigeration system, especially as the central air conditioner system of hypermarket and mansion, or the refrigeration system of large cold storage, the energy consumption that it is annual and expense are all very high; Because the core component in refrigeration system is compressor and cold-heat exchange system, and the design efficiency of each compressor and use efficiency are different, along with the increase of service time and the increase of wearing and tearing, the deviation of design efficiency and use efficiency can progressively increase, increasing.
The refrigeration system of prior art all can mark COP (efficiency value), but this efficiency value is the refrigeration efficiency under specified conditions, just as the fuel consumption values of automobile, the just efficiency under specified conditions, actual use efficiency is to be different under different speed road conditions.Compressor is also the same, and efficiency value changes with suction temperature, cooling water temperature etc. are different.Once, the working time of compressor is different to the every reduction of leaving water temperature, and leaving water temperature (evaporating temperature or suction temperature) is lower, and once, the working time of compressor is longer in every reduction, and power consumption is just larger.Under normal circumstances, 1 DEG C of the every raising of leaving water temperature, the refrigerating capacity that COP(unit power consumption produces) raising 3%--5%.
Such as existing control system is as adopted terminal temperature control, indoor temperature is controlled between 23-27 degree and (in following explanation, does not specialize, degree Celsius degree), (freezing and refrigerating system general control is between negative 22 degree of negative 18-for average 25 degree, average negative 20 degree), with current radiating rate, with the intrinsic radiating efficiency of system, blow the cold wind 30 minutes of 8 DEG C, can reach the lower limit of design temperature, but because the actual operating efficiency of equipment reduces along with duration of service extends its service efficiency, actual radiating efficiency may only have 80% of design efficiency, so time used is the more than 1.2 times of design time.
During this period of time, because compressor is working without cessation, can cause the continuous decline of leaving water temperature, to such an extent as to the operating efficiency of compressor can reduce gradually.Actual refrigerating capacity=∫ COP × P × t, due to the reduction of COP value, refrigerating efficiency COP8 when actual refrigerating efficiency can be less than 8 DEG C, thus cause the increase of power consumption=P × t.
In current central air conditioner system, refrigeration system by compressing, the various piece such as cooling, condensation, transmission and heat radiation forms, as shown in Figure 1, the efficiency of links is different, and the refrigerating efficiency of whole system is to be determined by the low link of efficiency, therefore, how to improve the efficiency of air conditioner of existing system, and to reduce energy consumption be that current each control system manufacturer is always in the technical goal of research and development.
Summary of the invention
The object of the present invention is to provide a kind of energy-saving control device and method of refrigeration system, for the defect of above-mentioned prior art, the load management of prior art and control mode are just to maintain stable serviceability temperature as starting point, the not service efficiency of management equipment, and the present invention judges by algorithm and select corresponding refrigeration system to carry out work, thus the energy consumption of reduction whole system.
Technical scheme of the present invention is as follows:
An energy-saving control device for refrigeration system, it is connected between multiple compressors and original control system, wherein, a control module is set, and multiple temperature or pressure sensor, and described temperature or pressure sensor are arranged on the output channel of refrigeration system; Described control module setting comprises:
One data analysis unit for analytical system operational efficiency;
One for calculating the Mathematical Modeling unit of operational efficiency variation tendency;
One for drawing the operating path planning unit of best efficiency operational plan; And
The information receiving module that is connected and is connected with temperature or pressure sensor with above-mentioned each unit communications;
Described operating path planning unit adopts dynamic entropy equalization algorithm to carry out best efficiency operational plan calculating, and realizes the operation control of associated compressors according to this best efficiency operational plan.
Described energy-saving control device, wherein, is provided with auto by pass circuit between described compressor and original control system, for ensureing the control action of original control system.
Described energy-saving control device, wherein, described control module is control connection cooling water water pump, chilled water water pump and blower fan also.
Described energy-saving control device, wherein, described temperature or pressure sensor are arranged on gauge tap, and are connected with control module by the data-interface mode of CAN bus or wireless mode, RS232, RS485.
A method for described energy-saving control device, it comprises the following steps:
A, information receiving module receive the variations in temperature data that come from temperature or pressure sensor, and by the operational efficiency of data analysis unit analytical system;
B, calculate the variation tendency of operational efficiency by Mathematical Modeling unit;
C, adopt dynamic entropy equalization algorithm to carry out the calculating of best efficiency operational plan by running route planning unit, and realize the operation control of associated compressors according to this best efficiency operational plan.
Described method, wherein, in the dynamic entropy equalization algorithm in described steps A, entropy is proportional to ∫ P × COP × T × s ∽ ∫ T × T × g × A; Wherein, the performance number that P is corresponding compressor; COP is corresponding efficiency value; T is working time value; G is changes of entropy rate value; S is transmission efficiency value; A is radix value; Time is differentiated, to find efficiency flex point.
Described method, wherein, dynamic entropy equalization algorithm in described steps A also comprises: the mode that adopts multinomial to approach, find out curve of approximation F(t per minute, X, Y)=0, and finally form overall Mathematical Modeling, constantly revise by this Mathematical Modeling efficiency according to compressor in running, finally approach optimum numerical solution.
Described method, wherein, also comprises in described step C: reaching after leaving water temperature, cutting off the relatively poor compressor of Energy Efficiency Ratio.
The energy-saving control device of a kind of refrigeration system provided by the present invention and method, owing to having adopted dynamic entropy equalization algorithm, realize the compressor planning operation to different efficiency values, and set up Mathematical Modeling, realized the effect of power saving.
Brief description of the drawings
Fig. 1 is the refrigeration system schematic diagram of prior art.
Fig. 2 is the energy-saving control device structural representation of refrigeration system of the present invention.
Fig. 3 is the energy-saving control device concrete function structural representation of refrigeration system of the present invention.
Fig. 4 is the syndeton schematic diagram of energy-saving control device of the present invention.
Detailed description of the invention
Below preferred embodiment of the present invention is described in detail.
In energy-saving control device of the present invention and method thereof, for refrigeration system, it mainly comprises the system such as freezing and refrigeration and central air-conditioning, as shown in Figure 1, energy-saving control device of the present invention is arranged between existing multiple compressor and original control system, generally can adopt an auto by pass to connect, in control module fault of the present invention or while deliberately making it inoperative, can automatically realize original control logic of original control system.When energy-saving control device operation of the present invention, maintain the control access to each refrigeration plant by pulse signal, this path generally can only maintain 20 milliseconds receiving after pulse signal, if overtime equipment is not received pulse signal again, in apparatus of the present invention, the relay of auto by pass can close automatically, the whole circuit of controller in energy-saving control device of the present invention just and between the equipment that needs to control has disconnected, and is controlled by former control circuit.The design of this auto by pass is generally the security for improving system, if there is any fault in control device of the present invention like this, can both ensure that whole system can be switched to voluntarily by original system control, what whole system still can even running, be not less than original level of control.
The module diagram of energy-saving control device of the present invention and method as shown in Figure 3, wherein be connected between multiple compressors and original control system, as shown in Figure 4, one control module is set, and temperature or a pressure sensor, described temperature or pressure sensor are arranged on the output channel of refrigeration system, also can be arranged on and treat in refrigeration space, for example, in room or freezer, in only having temperature or pressure sensor being arranged on the output channel of refrigeration system, just more effective to the effectiveness parameters judgement of compressor.Temperature of the present invention or pressure sensor are two parts of basic identical function in actual refrigeration system, according to current refrigerant system design, can realize by the pressure of collecting temperature or cooling flow the calculating of efficiency value, between its temperature and pressure value, be to carry out according to fixing conversion relation, therefore, gather any can.
Described control module setting comprises as shown in Figure 3: a data analysis unit for analytical system operational efficiency; One for calculating the Mathematical Modeling unit of operational efficiency variation tendency; One for drawing the operating path planning unit of best efficiency operational plan; And the information receiving module that is connected and is connected with temperature or pressure sensor with above-mentioned each unit communications; Described operating path planning unit adopts dynamic entropy equalization algorithm to carry out best efficiency operational plan calculating, and realizes the operation control of associated compressors according to this best efficiency operational plan.
The energy-saving control method of energy-saving control device of the present invention, as shown in Figure 3, its modules adopts respectively following steps:
A, information receiving module receive and come from the variations in temperature data of temperature or pressure sensor, and are efficiency or usefulness by the operational efficiency of data analysis unit analytical system, conventionally adopt COP to represent;
B, calculate the variation tendency of operational efficiency by Mathematical Modeling unit, determine current equipment as the COP of compressor with and variation tendency;
C, adopt dynamic entropy equalization algorithm to carry out the calculating of best efficiency operational plan by running route planning unit, and realize the operation control of associated compressors according to this best efficiency operational plan.For different equipment systems, conventionally can adopt different usefulness operational plans, but core a bit to implement exactly energy consumption balance and the usefulness adjustment to whole refrigeration system so that it finally can realize economize on electricity.Because the energy consumption cost of the whole refrigeration system of the present invention is generally all very high, therefore, the economic worth of energy-saving control device of the present invention and method is very high.
In energy-saving control device of the present invention, be connected with control circuit of the present invention with data-interface by the sensor arranging in space to be cooled, the signal of temperature and pressure sensor is sent to the information receiving module in control circuit by the data-interface such as RS232 or RS485 or CAN or GPRS mode, and energy-saving control device of the present invention is multiple independently relevant or independently refrigeration system and links thereof have connected into unified energy-saving control device.
Energy-saving control device of the present invention is the dynamical system of a unceasing study, can automatically regulate corresponding parameter according to the variation in use procedure.More of a specified duration due to along with refrigeration system use procedure, (due to the wearing and tearing of compressor, the reasons such as aging and lack of refrigerant) efficiency of each equipment such as compressor there will be variation, therefore the present invention is by dynamic efficiency optimized algorithm, calculate optimum parameter configuration combination, and according to the variation tendency of parameter, make corresponding adjustment, the key of apparatus of the present invention and method is judgement and the adjustment algorithm to trend, can judge accurately that actual refrigeration demand and refrigeration plant provide the variation of efficiency, and the each parameter of clear calculating and the impact of control on these variations, finally extrapolate the namely the most energy-conservation operational factor configuration of efficiency the best of a combination and the combination of compressor operating control.
Energy-saving control device of the present invention is also by analyzing the efficiency data of links under different situations, the operation of unified plan compressor, reduce because efficiency is not mated the waste causing, calculate the Power Function of compressor within a period of time, and by dynamic entropy equalization algorithm, links dry run Mathematical Modeling in building during this period of time, and by calculating the rate of change of links efficiency, optimized operation planning in drawing during this period of time, comprises parameter configuration and the operation control etc. of each time point.For example former refrigeration system is three compressors, and operation logic is output 7 degree chilled waters, three compressors are common start 1 hour after, stop wherein one 1 hour, water pump and other parameter constants; Three operations 30 minutes through the processing of energy-saving control device of the present invention, stop two 50 minutes, and heighten leaving water temperature 0.5 and spend, start three compressors operations 40 minutes, progressively turn down chilled water leaving water temperature to 7 degree.In this process, although refrigerating capacity reduces, but because the variation of the temperature difference has improved the heat conduction efficiency of terminal and the refrigerating efficiency of compressor, so actual user's serviceability temperature does not reduce, for example suppose former power 100KW, within 2 hours, power consumption 500 is spent, and under the control of the inventive method and system, power consumption 433 is spent.
In energy-saving control device of the present invention and method, entropy (being proportional to the total amount of refrigeration) is proportional to ∫ P × COP × T × s ∽ ∫ T × T × g × A; Wherein, P is that this equipment is as the performance number of compressor; COP is corresponding efficiency value; T is working time value; G is changes of entropy rate value; S is transmission efficiency value; A is radix value, and the performance of this radix value during with compressor operating is relevant, change as its power with reference to radix, the direct ratio that is integrated into of entropy and efficiency, power and time is described before this function, after illustrate that entropy is directly proportional to the integrated square of time; For finding efficiency flex point, the time is differentiated, find out F(s, g)=0 approximate solution; Because function variable fluctuation is large, the mode that can adopt multinomial to approach, finds out curve of approximation F(t per minute, X, Y)=0, and finally form overall Mathematical Modeling.This is the irregular curve of a segmentation, by the data reference of a period of time, constantly revise, progressively make it level and smooth, make curve junction constantly level and smooth (multinomial exponent number is poor is less than 2), a reference curve of final formation, constantly revises by this Mathematical Modeling efficiency according to compressor in running, finally approaches optimum numerical solution.
In energy-saving control device of the present invention and method, also consider refrigeration output, balance between refrigeration demand and refrigerating efficiency maximize, because this three's multiple times can not meet simultaneously, if keep instant refrigerating capacity to equal heat dissipation capacity, that just can not ensure that refrigerating efficiency is the highest, so energy-saving control device of the present invention and method are within the scope of certain hour, according to different system quantity of heat storage differences, the sensitivity coefficient difference of efficiency to variations in temperature, so do not determine, need be by energy-saving control device automatic learning of the present invention, form the period of change of refrigeration system, calculate the operating path of the best efficiency of compressor, effectively solve this contradiction.
For the system of multi-compressor in parallel, energy-saving control device of the present invention and method, by dynamic Energy Efficiency Analysis, are found out appropriate efficiency matching way, and can more reasonably be distributed the work of each compressor; Energy-saving control device of the present invention does not substitute original system, but the mode that adopts time zone to take over, within the time period of mentioning in the above, carry out control and management whole system by energy-saving control device of the present invention, auto by pass control circuit is set simultaneously, exceed after this time, energy-saving control device of the present invention is kept apart oneself again, manages each refrigeration plant by former control system according to former control logic.This auto by pass system can be given back original control system control, disconnection is connected with energy-saving control device of the present invention, to guarantee security and compatibility, energy-saving control device of the present invention like this affects the control function of former control system at the Shi Buhui that breaks down, so safety; Secondly original system can be controlled again, ensures that energy-saving control device of the present invention and former control system do not conflict.
For the refrigeration system of many main frames, energy-saving control device of the present invention can be by central controlled mode, independently selects the work allocation mode that efficiency is high, so that system energy efficiency maximizes.Such as two equipment of original control system control, a screw machine, a piston machine, piston machine has two compressors, efficiency value (COP) 3.9; Screw machine is respectively 25%:3.4 4 load stages, 50%:3.8, and 75%:4.8,100%5.2, and piston machine does not have capacity adjusting valve, two equipment originally do not affect mutually, operation respectively after namely starting.And had after energy-saving control device of the present invention, will first start piston machine, when underloading, start screw machine and cut off piston machine, piston machine is just restarted in load also deficiency.Corresponding uninstall process is also first to stop piston machine, then unloads screw machine, and screw machine load is less than after 50%, restarts piston machine, cuts off screw machine.And original in prior art be all autonomous control system, between system, can not link.
Energy-saving control device of the present invention and method are an information network platform and the software control that moves on this platform thereof, can be all about the information gathering of efficiency be to platform, and can share all information and control logics by multiple control systems, energy-saving control device of the present invention and method can be adjusted according to another operation planning and data variation, make to control more accurate.Energy-saving control device of the present invention not only can be controlled compressor, can also control all related links of refrigeration system, by switch and standard control interface, as the data-interface such as CAN or RS232, RS485, the multiple expansion interfaces such as 0-10V or 4-20mA simulation control interface, realize the control comprising cooling water water pump, chilled water water pump, blower fan etc., and these equipment can coordinate the operation of compressor to carry out the adjustment of load, maximize to reach efficiency, realize the interlock between equipment.If there is frequency conversion function, can carry out frequency adjustment, if there be multiple selection, can control quantity and the power of unlatching, and conventionally the work of these parts in the prior art normally by operator's manual operation work.
Energy-saving control device of the present invention and method are by the refrigerating efficiency of balance links, by the load of timely adjustment compressor, control the balance of refrigeration and heat radiation, reach whole efficiency maximization, to the integration of transmission efficiency s differential again, ask the optimal value in certain time period.Energy-saving control device of the present invention and method, by suitably reducing load P, are stablized leaving water temperature, to reach the effect that improves refrigeration service efficiency.Actual refrigerating capacity=∫ COP × P × t in this process, due to COP value stabilization, refrigerating efficiency COP8 when actual refrigerating efficiency equals 8 DEG C.So use power P to reduce, in the situation that refrigerating capacity is identical, compressor power consumption ﹤ P × t.
Below lift instantiation Energy Saving Control process of the present invention is described, for example, in the time that a main frame contains the situation of multiple compressors: 3 compressors, former power is 10KW, 10KW and 7KW, and efficiency COP value is 4, but along with using and wearing and tearing, efficiency reduces, be respectively 3,3.5 and this efficiency of 4(can calculate in real time through energy-saving control device of the present invention), common use logic is, reach after temperature, first cut off low power equipment, then cut off at random the equipment of equal-wattage.As one hour refrigerating capacity 50 of need, the logic of original operation is starting three compressors, move 30 minutes, stop 7KW compressor, move 18 minutes, stop at random one and rerun 12 minutes, so overall operation is (10 × 3+10 × 3.5+7 × 4) × 0.2+(10 × 3+10 × 3.5) × 0.2+(10 × 3) × 0.6=50.2, total energy consumption: (10+10+7) × 0.2+(10+10) × 0.2+(10) × 0.6=15.4(degree); And through operation planning control of the present invention, use the equipment that efficiency is high as far as possible, operational plan is (7 × 4+10 × 3.5) × 0.65+(7 × 4) × 0.35=40.95+9.8=50.75, total energy consumption (10+7) × 0.65+(7) × 0.35=11.05+2.45=13.5.Therefore identical refrigerating capacity, saves energy consumption and exceedes 12%, considers the factor that other efficiencies improve, and power saving rate will be higher.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (8)
1. the energy-saving control device of a refrigeration system, it is connected between multiple compressors and original control system, it is characterized in that, a control module is set, and multiple temperature or pressure sensor, described temperature or pressure sensor are arranged on the output channel of refrigeration system; Described control module setting comprises:
One data analysis unit for analytical system operational efficiency;
One for calculating the Mathematical Modeling unit of operational efficiency variation tendency;
One for drawing the operating path planning unit of best efficiency operational plan; And
The information receiving module that is connected and is connected with temperature or pressure sensor with above-mentioned each unit communications;
Described operating path planning unit adopts dynamic entropy equalization algorithm to carry out best efficiency operational plan calculating, and realizes the operation control of associated compressors according to this best efficiency operational plan;
Described information receiving module receives the variations in temperature data that come from temperature or pressure sensor, and by the operational efficiency of data analysis unit analytical system; Calculated the variation tendency of operational efficiency by Mathematical Modeling unit; Adopt dynamic entropy equalization algorithm to carry out the calculating of best efficiency operational plan by running route planning unit, and realize the operation control of associated compressors according to this best efficiency operational plan.
2. energy-saving control device according to claim 1, is characterized in that, between described compressor and original control system, is provided with auto by pass circuit, for ensureing the control action of original control system.
3. energy-saving control device according to claim 1, is characterized in that, described control module is control connection cooling water water pump, chilled water water pump and blower fan also.
4. energy-saving control device according to claim 1, is characterized in that, described temperature or pressure sensor are arranged on gauge tap, and is connected with control module by the data-interface mode of CAN bus or wireless mode, RS232, RS485.
5. a control method for energy-saving control device as claimed in claim 1, it comprises the following steps:
A, information receiving module receive the variations in temperature data that come from temperature or pressure sensor, and by the operational efficiency of data analysis unit analytical system;
B, calculate the variation tendency of operational efficiency by Mathematical Modeling unit;
C, adopt dynamic entropy equalization algorithm to carry out the calculating of best efficiency operational plan by running route planning unit, and realize the operation control of associated compressors according to this best efficiency operational plan.
6. control method according to claim 5, is characterized in that, in the dynamic entropy equalization algorithm in described step C, entropy is proportional to ∫ P × COP × T × s ∽ ∫ T × T × g × A; Wherein, the performance number that P is corresponding compressor; COP is corresponding efficiency value; T is working time value; G is changes of entropy rate value; S is transmission efficiency value; A is radix value; Time is differentiated, to find efficiency flex point.
7. control method according to claim 6, it is characterized in that, dynamic entropy equalization algorithm in described step C also comprises: the mode that adopts multinomial to approach, find out curve of approximation F(t per minute, X, Y)=0, and finally form overall Mathematical Modeling, constantly revise by this Mathematical Modeling efficiency according to compressor in running, finally approach optimum numerical solution.
8. control method according to claim 5, is characterized in that, in described step C, also comprises: reaching after leaving water temperature, cutting off the relatively poor compressor of Energy Efficiency Ratio.
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| CN104533794A (en) * | 2014-10-31 | 2015-04-22 | 苏州新亚科技有限公司 | Parallel-connection unit controller of separation type screw rod compressor |
| CN106014999B (en) * | 2016-06-09 | 2017-08-04 | 中国石油大学(华东) | A kind of water-ring vacuum pump assembly Effec-tive Function control method and control system |
| TWI604162B (en) * | 2016-06-21 | 2017-11-01 | Chunghwa Telecom Co Ltd | Automatic air conditioner operation capacity adjustment system and method |
| CN109062869A (en) * | 2018-07-27 | 2018-12-21 | 珠海市盛西源机电设备有限公司 | A kind of power-economizing method of partition running mode on freezing unit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6101822A (en) * | 1999-09-01 | 2000-08-15 | Groves; Eugene | Constant volume air conditioning/heat pump efficiency improvement apparatus |
| CN101498494A (en) * | 2008-01-31 | 2009-08-05 | 上海南区节电科技开发有限公司 | Economical operation method for central air conditioning system |
| CN101539355A (en) * | 2009-04-23 | 2009-09-23 | 上海爱控自动化设备有限公司 | Refrigeration control system capable of intelligent scheduling and method thereof |
| CN101922781A (en) * | 2010-07-28 | 2010-12-22 | 重庆市同方科技发展有限公司 | Controlled environment temperature and humidity regulation based air conditioner energy saving control method and system |
| CN102455093A (en) * | 2011-08-17 | 2012-05-16 | 深圳市善能科技有限公司 | Energy efficiency controlling method for refrigerating system |
| CN202648280U (en) * | 2012-05-25 | 2013-01-02 | 王慧文 | Energy-saving control device of refrigerating system |
-
2012
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6101822A (en) * | 1999-09-01 | 2000-08-15 | Groves; Eugene | Constant volume air conditioning/heat pump efficiency improvement apparatus |
| CN101498494A (en) * | 2008-01-31 | 2009-08-05 | 上海南区节电科技开发有限公司 | Economical operation method for central air conditioning system |
| CN101539355A (en) * | 2009-04-23 | 2009-09-23 | 上海爱控自动化设备有限公司 | Refrigeration control system capable of intelligent scheduling and method thereof |
| CN101922781A (en) * | 2010-07-28 | 2010-12-22 | 重庆市同方科技发展有限公司 | Controlled environment temperature and humidity regulation based air conditioner energy saving control method and system |
| CN102455093A (en) * | 2011-08-17 | 2012-05-16 | 深圳市善能科技有限公司 | Energy efficiency controlling method for refrigerating system |
| CN202648280U (en) * | 2012-05-25 | 2013-01-02 | 王慧文 | Energy-saving control device of refrigerating system |
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