CN105222439A - Data center's air conditioning terminal energy-saving control device and control method - Google Patents
Data center's air conditioning terminal energy-saving control device and control method Download PDFInfo
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- CN105222439A CN105222439A CN201510673148.6A CN201510673148A CN105222439A CN 105222439 A CN105222439 A CN 105222439A CN 201510673148 A CN201510673148 A CN 201510673148A CN 105222439 A CN105222439 A CN 105222439A
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Abstract
The invention provides energy-saving control device and the control method of a kind of data center air conditioning terminal, be applied in data center's air conditioning terminal structure of being made up of chilled water coil, blower fan, control valve, speed governing actuating unit, chilled water inlet pipeline, chilled water outlet pipeline, air-supply passage and return air channel.Described energy-saving control device comprises: wind pushing temperature sensor, air-supply static pressure transducer, return air temperature sensor, optimal control module, wind pushing temperature control module, Static prestressed-pile module etc.The present invention can not only improve return air temperature control accuracy, avoids hot localised points and control wind pushing temperature interval at green safety, can also save the energy consumption of data center's air conditioning terminal blower fan, promote the efficiency of whole water cooling air conditioning system.
Description
Technical field
The present invention relates to the Energy Saving Control of data center's air-conditioning system, be specifically related to energy-saving control device and control method that one is referred to as data center's air conditioning terminal of " air conditioner in machine room " usually.
Background technology
Data center's air conditioning terminal provides thermal environment for machine room information technoloy equipment.The consumption of typical consumption of data center structure hollow adjusting system accounts for about 40%, and wherein data center's air conditioning terminal accounts for about 10%.In water cooling air conditioning system, the operating condition of data center's air conditioning terminal not only concerns the energy consumption that body efficiency also affects low-temperature receiver end refrigeration station.
Described data center air conditioning terminal take chilled water as cooling medium, heat exchange is carried out by cooling coil and air, be applied in a kind of air-conditioning of data center machine room, its operation principle is: the chilled water transported by low-temperature receiver end enters coil pipe and cools hot-air (return air), blower fan is transported to machine room information technoloy equipment end cooled cold air (air-supply), cold air cools the load equipment (information technoloy equipment) running heating, the hot air reflow of high temperature is become to data center's air conditioning terminal after cooling, circulation like this, continuous maintenance information technoloy equipment normally runs required thermal environment.
Existing data center air conditioning terminal control method mainly contains: return air temperature control methods and wind pushing temperature control methods.Return air temperature control methods reaches return air temperature setting value by regulating chilled-water flow to control return air temperature, and control device structure as shown in Figure 2.Wind pushing temperature control methods reaches wind pushing temperature setting value by regulating chilled-water flow to control wind pushing temperature, and control device structure as shown in Figure 3.
The control principle of return air temperature control methods: return air temperature sensor 208 monitors return air temperature, return air temperature signal 214 reaches return air temperature controller 211, return air temperature controller 211 compares return air temperature value and compares with return air temperature setting value, freezing water valve controlled quentity controlled variable value is calculated by PI/PID, drive chilled water valve actuator 203 to regulate the freezing water yield by freezing water valve controlled quentity controlled variable signal 215, it is constant in return air temperature setting value that circulation performs maintenance return air temperature; Static pressure sensor 210 monitors air-supply static pressure, air-supply static pressure signal 217 reaches staticaccelerator pressure controller 213, staticaccelerator pressure controller 213 compares static pressure and compares with static pressure setting value, Boiler pressure control value is calculated by PI/PID, drive fan speed regulation actuating unit 219 to regulate fan delivery by Boiler pressure control amount signal 218, it is constant in static pressure setting value that circulation performs maintenance static pressure.
The control principle of wind pushing temperature control methods: wind pushing temperature sensor 309 monitors wind pushing temperature, blast temperature signals 320 reaches wind pushing temperature controller 312, wind pushing temperature controller 312 compares wind pushing temperature value and compares with wind pushing temperature setting value, freezing water valve controlled quentity controlled variable value is calculated by PI/PID, drive chilled water valve actuator 303 to regulate the freezing water yield by freezing water valve controlled quentity controlled variable signal 321, it is constant in wind pushing temperature setting value that circulation performs maintenance wind pushing temperature; Static pressure sensor 310 monitors air-supply static pressure, air-supply static pressure signal 317 reaches staticaccelerator pressure controller 313, staticaccelerator pressure controller 313 compares static pressure and compares with static pressure setting value, Boiler pressure control value is calculated by PI/PID, drive fan speed regulation actuating unit 319 to regulate fan delivery by Boiler pressure control amount signal 318, it is constant in static pressure setting value that circulation performs maintenance static pressure.
The main weak point of above-mentioned two kinds of existing control methods is: 1. can only control a temperature, or only have return air temperature to control, or only have wind pushing temperature to control, and the change of another temperature uncontrollable, on the impact of controlled environment, easily occurs hot localised points; 2. static pressure control loop regulates air quantity and temperature control loop regulating pondage, and two control loops are separate, " doing things in his own way ", can not coordinate water side and the optimization of air side efficiency; 3. the desired temperature (return air temperature setting value or wind pushing temperature setting value) of temperature control loop, the static pressure setting value of static pressure control loop are constant in program inside, load variations can not be followed and dynamic adjustments, when making operation at part load, superfluous, the temperature difference of cold glides, and seriously reduces system energy efficiency.
Summary of the invention
The invention provides energy-saving control device and the control method of a kind of data center air conditioning terminal, its objective is and improve Thermal Environment Control effect, save data center's air conditioning terminal fan energy consumption, reduce low-temperature receiver end energy consumption.
The energy-saving control device of data center's air conditioning terminal, be applied in data center's air conditioning terminal structure of being made up of chilled water coil, blower fan, control valve, speed governing actuating unit, chilled water inlet pipeline, chilled water outlet pipeline, air-supply passage and return air channel etc., energy-saving control device of the present invention comprises:
Wind pushing temperature sensor, is installed on the air outlet place of blower fan, for obtaining wind pushing temperature value;
Air-supply static pressure transducer, is installed between the air outlet of blower fan and the air inlet of load equipment, for obtaining static pressure;
Return air temperature sensor, is installed on the air outlet place of load equipment, for obtaining return air temperature value.
Optimal control module, for carrying out integration to the difference of return air temperature value and return air temperature setting value, real-time acquisition refrigeration demand amount ratio, and according to wind pushing temperature setting value restrained boundary, static pressure setting value restrained boundary and refrigeration demand amount than calculating new wind pushing temperature setting value and static pressure setting value;
Wind pushing temperature control module, calculates and exports controlled quentity controlled variable regulate chilled-water flow according to coming wind pushing temperature setting value that self-optimizing control module exports and the wind pushing temperature value of feedback, reach to control wind pushing temperature and maintain wind pushing temperature setting value;
Static prestressed-pile module, calculates according to the static pressure of the static pressure setting value and feedback of carrying out the output of self-optimizing control module and exports the rotating speed that controlled quentity controlled variable driving speed governing actuating unit regulates blower fan, reach to control static pressure and maintain static pressure setting value.
The energy-saving control method of data center's air conditioning terminal, adopts following flow and method:
A () return air temperature sensor detects return air temperature value, return air temperature value transfers to optimal control module;
B the difference of () optimal control module to return air temperature value and return air temperature setting value carries out integration, obtain refrigeration demand amount ratio in real time;
C () optimal control module calculates new wind pushing temperature setting value and static pressure setting value according to wind pushing temperature setting value restrained boundary, static pressure setting value restrained boundary and refrigeration demand amount ratio;
D () wind pushing temperature control module calculates according to the wind pushing temperature value of the wind pushing temperature setting value and feedback of carrying out the output of self-optimizing control module and exports controlled quentity controlled variable and regulates chilled-water flow, reach to control wind pushing temperature and maintain wind pushing temperature setting value;
E () Static prestressed-pile module, calculates according to the static pressure of the static pressure setting value and feedback of carrying out the output of self-optimizing control module and exports the rotating speed that controlled quentity controlled variable driving speed governing actuating unit regulates blower fan, reach to control static pressure and maintain static pressure setting value.
Described wind pushing temperature setting value restrained boundary refers to the highest and minimum wind pushing temperature setting value of permission set.
Described air-supply static pressure setting value restrained boundary refers to the highest and minimum static pressure setting value of permission set.
Described refrigeration capacity requirement, according to following formulae discovery:
[γ]＝∫([RAT]-[RAT.set])；
Described wind pushing temperature setting value, preferably, according to following formulae discovery:
[SAT.sp]＝[SAT.sp.max]，0≤[γ]＜[α1]；
[SAT.sp]＝[SAT.sp.max]-([SAT.sp.max]-[SAT.sp.min])*([γ]-[α1])/([α2]-[α1])，[α1]≤[γ]＜[α2]；
[SAT.sp]＝[SAT.sp.min]，0≤[γ]＜[α2]；
Described static pressure setting value, preferably, according to following formulae discovery:
[P.sp]＝[P.sp.min]+([P.sp.opt]-[P.sp.min])*[γ]/[α1]，0≤[γ]＜[α1]；
[P.sp]＝[P.sp.opt]，[α1]≤[γ]＜[α2]；
[P.sp]＝[P.sp.opt]+(1-[P.sp.opt])*([γ]-[α2])/(1-[α2])，0≤[γ]＜[α2]；
In above-mentioned formula,
[SAT.sp]: wind pushing temperature setting value, DEG C;
[SAT.sp.max]: the highest wind pushing temperature setting value, DEG C;
[SAT.sp.min]: minimum wind pushing temperature setting value, DEG C;
[γ]: refrigeration capacity requirement ratio, [0,1];
[α 1]: parameter, [0,1], [α 1] < [α 2];
[α 2]: parameter, [0,1], [α 1] < [α 2];
[P.sp]: static pressure duty setting signal;
[P.sp.min]: Minimum Static is installed with set value signal;
[P.sp.opt]: optimize static pressure setting value.
Beneficial effect of the present invention is: 1. Real-time Obtaining refrigeration requirement; 2. return air temperature is controlled accurately; 3. wind pushing temperature is controlled accurately interval in safety (green); 4. by dynamic adjustments air-supply static pressure setting value, air-conditioning draught fan energy consumption is reduced; 5. pass through according to refrigeration capacity requirement than dynamic adjustments wind pushing temperature and static pressure setting value, the return air temperature value that accurate control is higher, can avoid the water side temperature difference to glide, can also improve chilled water return water temperature, thus extend nature cooling duration, make full use of natural cooling source and energy-conservation; 6., under part load ratio, refrigeration capacity requirement is than little, and wind pushing temperature setting is higher, can improve water side chilled water supply water temperature, thus energy-conservation by lifting cold efficiency.
By the present invention compared with prior art, also there is following difference:
1, the present invention has control to return air temperature, static pressure and wind pushing temperature;
2, the present invention resets the wind pushing temperature setting value of wind pushing temperature module and the static pressure setting value of Static prestressed-pile module by optimizing module;
3, wind pushing temperature setting value of the present invention is not a changeless value, but the interval in setting restrained boundary, the wind pushing temperature setting value value in the wind pushing temperature control module current execution cycle is the wind pushing temperature setting value transmitted by optimal control module in a upper cycle;
4, static pressure setting value of the present invention is not a changeless value, but the interval in setting restrained boundary, the static pressure setting value value in the Static prestressed-pile module current execution cycle is the static pressure setting value transmitted by optimal control module in a upper cycle;
5, the control of return air temperature of the present invention is not directly rely on regulate chilled water valve opening and change chilled-water flow to realize, but by changing wind pushing temperature setting value and static pressure setting value, indirectly changes chilled-water flow and air quantity and realizes.
In sum, beneficial effect of the present invention is not only to improve return air temperature control accuracy, avoids hot localised points and controls wind pushing temperature interval at green safety, also be the energy consumption can saving data center's air conditioning terminal blower fan, the efficiency of whole water cooling air conditioning system can also be promoted.
Accompanying drawing explanation
Fig. 1 is the principle schematic of control device of the present invention.
Fig. 2 is the principle schematic one of existing control device.
Fig. 3 is the principle schematic two of existing control device.
In Fig. 1: chilled water coil 101, blower fan 102, control valve 103, chilled water water inlet 104, chilled water water outlet 105, air-supply 106, return air 107, return air temperature sensor 108, wind pushing temperature sensor 109, air-supply static pressure transducer 110, optimal control module 111, wind pushing temperature control module 112, Static prestressed-pile module 113, return air temperature value 114, wind pushing temperature setting value 115, static pressure setting value 116, static pressure 117, fan frequency conversion controlled quentity controlled variable 118, speed governing actuating unit 119, wind pushing temperature value 120, freezing water valve controlled quentity controlled variable 121.
In Fig. 2: chilled water coil 201, blower fan 202, control valve 203, chilled water water inlet 204, chilled water water outlet 205, air-supply 206, return air 207, return air temperature sensor 208, air-supply static pressure transducer 210, return air temperature control module 211, Static prestressed-pile module 213, return air temperature value 214, wind pushing temperature setting value 215, static pressure 217, fan frequency conversion controlled quentity controlled variable 218, speed governing actuating unit 219, freezing water valve controlled quentity controlled variable 221.
In Fig. 3: chilled water coil 301, blower fan 302, control valve 303, chilled water water inlet 304, chilled water water outlet 305, air-supply 306, return air 307, wind pushing temperature sensor 309, air-supply static pressure transducer 310, wind pushing temperature control module 312, Static prestressed-pile module 313, wind pushing temperature setting value 315, static pressure setting value 316, static pressure 317, fan frequency conversion controlled quentity controlled variable 318, speed governing actuating unit 319, wind pushing temperature value 320, freezing water valve controlled quentity controlled variable 321.
Detailed description of the invention
The energy-saving control device of data center's air conditioning terminal as shown in Figure 1, be applied in data center's air conditioning terminal structure of being made up of chilled water coil 101, blower fan 102, control valve 103, speed governing actuating unit 119, chilled water inlet pipeline, chilled water outlet pipeline, air-supply passage and return air channel, energy-saving control device of the present invention comprises:
Wind pushing temperature sensor 109, is installed on the air outlet place of blower fan 102, for obtaining wind pushing temperature value 120;
Air-supply static pressure transducer 110, is installed between the air outlet of blower fan 102 and the air inlet of load equipment 122, for obtaining static pressure 117;
Return air temperature sensor 108, is installed on the air outlet place of load equipment 122, for obtaining return air temperature value 114.
Optimal control module 111, for carrying out integration to the difference of return air temperature value 114 and return air temperature setting value, real-time acquisition refrigeration demand amount ratio, and according to wind pushing temperature setting value restrained boundary, static pressure setting value restrained boundary and refrigeration demand amount than calculating new wind pushing temperature setting value 115 and static pressure setting value 116;
Wind pushing temperature control module 112, calculate according to the wind pushing temperature value 120 of the wind pushing temperature setting value 115 and feedback of carrying out self-optimizing control module 111 output and export controlled quentity controlled variable and regulate chilled-water flow, reach to control wind pushing temperature and maintain wind pushing temperature setting value 115;
Static prestressed-pile module 113, calculating according to the static pressure 117 of the static pressure setting value 116 and feedback of carrying out self-optimizing control module 111 output and export controlled quentity controlled variable drives speed governing actuating unit 119 to regulate the rotating speed of blower fan 102, reaches to control static pressure and maintains static pressure setting value 116.
The energy-saving control method of data center's air conditioning terminal, adopts following flow and method:
A () return air temperature sensor 108 detects return air temperature value 114, return air temperature value 114 transfers to optimal control module 111;
B the difference of () optimal control module 111 pairs of return air temperature values 114 and return air temperature setting value carries out integration, obtain refrigeration demand amount ratio in real time;
C () optimal control module 111 calculates new wind pushing temperature setting value 115 and static pressure setting value 116 according to wind pushing temperature setting value restrained boundary, static pressure setting value restrained boundary and refrigeration demand amount ratio;
D () wind pushing temperature control module 112 calculates according to the wind pushing temperature value 120 of the wind pushing temperature setting value 115 and feedback of carrying out self-optimizing control module 111 output and exports controlled quentity controlled variable and regulates chilled-water flow, reach to control wind pushing temperature and maintain wind pushing temperature setting value 115;
(e) Static prestressed-pile module 113, calculating according to the static pressure 117 carrying out static pressure setting value 116 feedback that self-optimizing control module 111 exports and export controlled quentity controlled variable drives speed governing actuating unit 119 to regulate the rotating speed of blower fan 102, reaches to control static pressure and maintains static pressure setting value 116.
Described wind pushing temperature setting value restrained boundary refers to the highest and minimum wind pushing temperature setting value of permission set.
Described air-supply static pressure setting value restrained boundary refers to the highest and minimum static pressure setting value of permission set.
Described refrigeration capacity requirement, according to following formulae discovery:
[γ]＝∫([RAT]-[RAT.set])；
Described wind pushing temperature setting value, preferably, according to following formulae discovery:
[SAT.sp]＝[SAT.sp.max]，0≤[γ]＜[α1]；
[SAT.sp]＝[SAT.sp.max]-([SAT.sp.max]-[SAT.sp.min])*([γ]-[α1])/([α2]-[α1])，[α1]≤[γ]＜[α2]；
[SAT.sp]＝[SAT.sp.min]，0≤[γ]＜[α2]；
Described static pressure setting value, preferably, according to following formulae discovery:
[P.sp]＝[P.sp.min]+([P.sp.opt]-[P.sp.min])*[γ]/[α1]，0≤[γ]＜[α1]；
[P.sp]＝[P.sp.opt]，[α1]≤[γ]＜[α2]；
[P.sp]＝[P.sp.opt]+(1-[P.sp.opt])*([γ]-[α2])/(1-[α2])，0≤[γ]＜[α2]；
In above-mentioned formula,
[SAT.sp]: wind pushing temperature setting value, DEG C;
[SAT.sp.max]: the highest wind pushing temperature setting value, DEG C;
[SAT.sp.min]: minimum wind pushing temperature setting value, DEG C;
[γ]: refrigeration capacity requirement ratio, [0,1];
[α 1]: parameter, [0,1], [α 1] < [α 2];
[α 2]: parameter, [0,1], [α 1] < [α 2];
[P.sp]: static pressure duty setting signal;
[P.sp.min]: Minimum Static is installed with set value signal;
[P.sp.opt]: optimize static pressure setting value.
The present invention is when applying, the chilled water 104 that low-temperature receiver end transports flows through freezing water valve 103 and enters coil pipe and cool hot-air (return air) 107, blower fan 102 is transported to load equipment (information technoloy equipment) 205 end cooled cold air (air-supply) 106, cold air cools the load equipment (information technoloy equipment) running heating, take away heat, the hot-air (return air) 107 becoming high temperature is back to data center's air conditioning terminal, circulation like this, dynamic adjustments controls, and constantly maintains information technoloy equipment and normally runs required thermal environment.
Apply control method of the present invention and can make air output dynamically matched load change, thus save data center's air conditioning terminal fan energy consumption widely; Can effectively promote chilled water return water temperature, and then nature cooling duration can be extended, reduce cold service time; By promoting chilled water supply water temperature, cold efficiency can also be improved, thus saves cold energy consumption.
Claims (5)
1. the energy-saving control device of data center's air conditioning terminal, be applied in data center's air conditioning terminal structure of being made up of chilled water coil (101), blower fan (102), control valve (103), speed governing actuating unit (119), chilled water inlet pipeline, chilled water outlet pipeline, air-supply passage and return air channel etc., it is characterized in that energy-saving control device of the present invention comprises:
Wind pushing temperature sensor (109), is installed on the air outlet place of blower fan (102), for obtaining wind pushing temperature value (120);
Air-supply static pressure transducer (110), is installed between the air outlet of blower fan (102) and load equipment (122) air inlet, for obtaining static pressure (117);
Return air temperature sensor (108), is installed on the air outlet place of load equipment (122), for obtaining return air temperature value (114).
Optimal control module (111), for carrying out integration to return air temperature value (114) and the difference of return air temperature setting value, real-time acquisition refrigeration demand amount ratio, and according to wind pushing temperature setting value restrained boundary, static pressure setting value restrained boundary and refrigeration demand amount than calculating new wind pushing temperature setting value (115) and static pressure setting value (116);
Wind pushing temperature control module (112), calculate according to the wind pushing temperature value (120) coming wind pushing temperature setting value (115) that self-optimizing control module (111) exports and feedback and export controlled quentity controlled variable and regulate chilled-water flow, reach to control wind pushing temperature and maintain wind pushing temperature setting value (115);
Static prestressed-pile module (113), static pressure (117) according to coming static pressure setting value (116) that self-optimizing control module (111) exports and feedback calculates and exports the rotating speed that controlled quentity controlled variable driving speed governing actuating unit (119) regulates blower fan (102), reaches to control static pressure and maintains static pressure setting value (116).
2. the energy-saving control method of data center's air conditioning terminal, is characterized in that adopting following flow and method:
A () return air temperature sensor (108) detects return air temperature value (114), return air temperature value (114) transfers to optimal control module (111);
B () optimal control module (111) carries out integration to return air temperature value (114) and the difference of return air temperature setting value, obtain refrigeration demand amount ratio in real time;
C () optimal control module (111) calculates new wind pushing temperature setting value (115) and static pressure setting value (116) according to wind pushing temperature setting value restrained boundary, static pressure setting value restrained boundary and refrigeration demand amount ratio;
D () wind pushing temperature control module (112) calculates and exports controlled quentity controlled variable regulate chilled-water flow according to coming wind pushing temperature setting value (115) that self-optimizing control module (111) exports and the wind pushing temperature value (120) fed back, reach to control wind pushing temperature and maintain wind pushing temperature setting value (115);
(e) Static prestressed-pile module (113), static pressure (117) according to coming static pressure setting value (116) that self-optimizing control module (111) exports and feedback calculates and exports the rotating speed that controlled quentity controlled variable driving speed governing actuating unit (119) regulates blower fan (102), reaches to control static pressure and maintains static pressure setting value (116).
3. the energy-saving control method of data center as claimed in claim 2 air conditioning terminal, is characterized in that: described wind pushing temperature setting value restrained boundary refers to the highest and minimum wind pushing temperature setting value of the permission that sets.
4. the energy-saving control method of data center as claimed in claim 2 air conditioning terminal, is characterized in that: described air-supply static pressure setting value restrained boundary refers to the highest and minimum static pressure setting value of the permission that sets.
5. the energy-saving control method of data center as claimed in claim 2 air conditioning terminal, is characterized in that: described refrigeration capacity requirement, according to following formulae discovery:
[γ]＝∫([RAT]-[RAT.set])；
Described wind pushing temperature setting value, preferably, according to following formulae discovery:
[SAT.sp]＝[SAT.sp.max]，0≤[γ]＜[α1]；
[SAT.sp]＝[SAT.sp.max]-([SAT.sp.max]-[SAT.sp.min])*([γ]-[α1])/([α2]-[α1])，[α1]≤[γ]＜[α2]；
[SAT.sp]＝[SAT.sp.min]，0≤[γ]＜[α2]；
Described static pressure setting value, preferably, according to following formulae discovery:
[P.sp]＝[P.sp.min]+([P.sp.opt]-[P.sp.min])*[γ]/[α1]，0≤[γ]＜[α1]；
[P.sp]＝[P.sp.opt]，[α1]≤[γ]＜[α2]；
[P.sp]＝[P.sp.opt]+(1-[P.sp.opt])*([γ]-[α2])/(1-[α2])，0≤[γ]＜[α2]；
In above-mentioned formula,
[SAT.sp]: wind pushing temperature setting value, DEG C;
[SAT.sp.max]: the highest wind pushing temperature setting value, DEG C;
[SAT.sp.min]: minimum wind pushing temperature setting value, DEG C;
[γ]: refrigeration capacity requirement ratio, [0,1];
[α 1]: parameter, [0,1], [α 1] < [α 2];
[α 2]: parameter, [0,1], [α 1] < [α 2];
[P.sp]: static pressure duty setting signal;
[P.sp.min]: Minimum Static is installed with set value signal;
[P.sp.opt]: optimize static pressure setting value.
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| CN106705390A (en) * | 2017-03-21 | 2017-05-24 | 广州市天园科技有限公司 | Fan coil self-adaptive energy saving control device and method |
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| CN109945353A (en) * | 2019-01-23 | 2019-06-28 | 捷通智慧科技股份有限公司 | A kind of energy-saving control device and control method of data center's air conditioning terminal |
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Address after: 100015 building 108, 10 Jiuxianqiao North Road, Chaoyang District, Beijing. Applicant after: Czech wisdom Polytron Technologies Inc Address before: 100015 building 108, 10 Jiuxianqiao North Road, Chaoyang District, Beijing. Applicant before: Beijing Jie Tong calculator room equipment Engineering Co., Ltd |
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Application publication date: 20160106 |