CN103900183A - Multi-energy complementation combined type heat pump air conditioner system for data machine room - Google Patents
Multi-energy complementation combined type heat pump air conditioner system for data machine room Download PDFInfo
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Abstract
The invention discloses a multi-energy complementation combined type heat pump air conditioner system. The multifunctional complementation combined type heat pump air conditioner system is mainly composed of a high-temperature cold source 1, a heat pump unit 2, a water separating device 3, a water collecting device 4, a data machine room user 5, a cooling device 6, a common air conditioner user 7, a plate-type heat exchanger 8, a cold accumulation groove 9, a cold water primary pump 10, a circulating pump 11, a cooling water pump 12, a common air conditioner user side water pump 13 and a secondary pump 14, wherein a common water chilling unit, a heat pump unit, a steam type lithium bromide absorption unit, a hot water type lithium bromide absorption unit, an evaporative cooling air conditioner and the like can serve as the high-temperature cold source 1, a water-cooling air conditioner corresponding to an individual building /various data center machine tool plate-type heat exchangers corresponding to an area building can serve as the data machine room user 5, and a cooling tower, a hot source tower and the like can serve as the cooling device 6. In summer, the high-temperature cold source and the heat pump unit operate independently. In winter, the high-temperature cold source and the heat pump unit are combined to cool the data machine room, and the heat pump unit serves as a hot source of the common air conditioner user. In spring and autumn, free cooling can be achieved. By means of the cold accumulation groove, the principle of peak clipping and valley filling is adopted in the cooling capability, and energy saving is achieved to the maximum extent.
Description
Technical field
The present invention relates to the one composite type heat pump air conditioner system of providing multiple forms of energy to complement each other.In summer, high temperature low-temperature receiver and source pump be independent operating respectively; Winter, high temperature low-temperature receiver and source pump cooperation, as the low-temperature receiver of data center module, source pump condensation side is conventional air-conditioning user heat supply simultaneously jointly; Transition season the present invention also can realize cooling tower " free cold supply ".In addition, the present invention arranges cold-storage groove in data center module side, to the cold in composite type heat pump air conditioner system " peak load shifting ", utilizes to greatest extent low grade heat energy.
Background technology
Along with the development of modern city, the electricity needs load sharp increase of society, how the contradiction between present situation and the rapid economic development of energy scarcity, alleviate this contradiction and become a major issue urgently to be resolved hurrily.
Along with Social Informatization Level improves gradually, large-scale data center has been penetrated into all trades and professions, and its high energy consumption problem is more and more paid close attention to by people.Calculator room equipment heat dissipation capacity is very large, and moisture dispersed amount is little, and load intensity is high, and large-scale data center machine room load intensity exceedes 400W/m
2; In heat, the heat mainly producing from runtime server, sensible heat ratio is higher, air handling process such as approaches at the clammy dry type temperature-fall period but.Data center machine room still needs cooling winter, and rate of load condensate changes little, belongs to typical all-year-around cooling building.Particularly, winter air-conditioning system condensing side direction outdoor environment discharges a large amount of used heat, causes the serious waste of heat, if this part low grade heat energy rationally can be utilized, will obtain significant energy-saving effect.
For the air-conditioning system of utilizing heat pump winter heating, the heat source temperature of source pump vaporizer side has material impact to unit heating performance COP, 1 DEG C of the every reduction of evaporating temperature, and the coefficient of performance in heating COP value of unit can corresponding reduction by 2%.Evaporating temperature is too low, can cause units consumption sharply to increase.
The feature of the high sensible heat ratio of data center module, provides possibility for it uses high temperature chilled water cooling, and higher supply water temperature can reduce the humidity load that adds of data center module, avoids the waste of energy.Research shows, 1 DEG C of the every lifting of evaporating temperature, and the coefficient of performance of refrigerating EER value of unit can corresponding improve 2%.Such as, chilled water supply water temperature is increased to 12 DEG C from 7 DEG C, the refrigeration efficiency of unit will improve 10%, utilize high temperature chilled water for data center module cooling, have larger energy-saving potential.Low-grade heat source is combined with heat pump techniques, winter shared data center module refrigeration duty, can realize " doulbe-sides' victory ": data center module adopts high temperature chilled water cooling, energy consumption for cooling reduces; In winter, source pump, using the high temperature chilled water backwater of data center module as thermal source, has improved the evaporating temperature of source pump, has significantly reduced operation energy consumption and the operating cost of heat pump.
At present, air-conditioning " cold-storage " is normally defined and adopts refrigeration machine and cold-storage device, in the cheap electricity period, carries out cold-storage operation, in the time of air conditioner load peak, and the technology that cold is discharged.Data center module belongs to typical all-year-around cooling building, and air conditioner load is large, and the high crest segment of air conditioner load and the high crest segment of network load coincide, and adopt " cold-storage " technology, are conducive to electrical network " peak load shifting ".
In addition, in the time that outdoor wet-bulb temperature is lower, for " free cold supply " provides possibility.Under this operational mode, close refrigeration machine, by switch valve, to plate type heat exchanger, cooling tower can, directly as the low-temperature receiver of data center module, be prepared cold water, realizes " free cold supply ", and energy-saving benefit is remarkable.
Multiple air-conditioning technical is combined, build " the composite type heat pump air conditioner system of providing multiple forms of energy to complement each other ", utilize to greatest extent low grade heat energy and natural cold source, reduce waste heat discharge, be conducive to alleviate " greenhouse effects " and " urban heat land effect ", meet the principles and policies of country's " energy-saving and emission-reduction " and " rational energy cascade utilization ".
Summary of the invention
High for current large-scale data center computer-room air conditioning system energy consumption for cooling, waste heat discharge amount is large and low the caused present situations such as energy consumption height that heat of conventional heat pump air conditioner evaporating temperature in winter, the present invention combines the multiple devices such as data center module high temperature low-temperature receiver, conventional air-conditioning user source pump, cooling device and cold-storage groove, propose " can be used for the composite type heat pump air conditioner system of providing multiple forms of energy to complement each other of data center module ", to utilize to greatest extent low grade heat energy and used heat as object, by " providing multiple forms of energy to complement each other ", meeting using of user can demand.
In summer, high temperature low-temperature receiver and source pump be independent operating respectively, is born data center module user's refrigeration duty by high temperature low-temperature receiver; Born conventional air-conditioning user's refrigeration duty by source pump.
Winter, high temperature low-temperature receiver, source pump, cold-storage groove cooperation, adopt the preferential strategy moving of source pump, by the four-way change-over valve of adjusting heat pump unit, conventional air-conditioning user is converted to the condensation side of source pump, and data center module becomes the evaporation side of source pump.The present invention can realize " source pump isolated operation+cold-storage groove charging ", " source pump+high temperature low-temperature receiver parallel running operating mode " and " source pump+high temperature low-temperature receiver+cold-storage groove is released cold operating mode ".
Conditioning in Transition Season, in the time that conventional air-conditioning user does not have thermic load, closes source pump, high temperature low-temperature receiver, cooling tower and cold-storage groove cooperation.The present invention can realize " cooling device free cold supply+cold-storage groove charging ", " cooling device free cold supply+high temperature low-temperature receiver parallel running operating mode " and " cooling device free cold supply+high temperature low-temperature receiver+cold-storage groove is released cold operating mode ".
" can be used for the composite type heat pump air conditioner system of providing multiple forms of energy to complement each other of data center module " proposed by the invention, be not limited to the air-conditioning system of single building " data center module ", for the large-size air conditioning system of region building " data center module ", be suitable for too, in the central cooling project of region, large-scale data center, will show larger energy-saving potential." can be used for the composite type heat pump air conditioner system of providing multiple forms of energy to complement each other of data center module " proposed by the invention,, significantly improved the heating performance of source pump, greatly reduces the energy consumption for cooling of data center module, and economic benefit and environmental benefit are obvious.
Brief description of the drawings
The accompanying drawing 1 composite type heat pump air conditioner system schematic diagram of providing multiple forms of energy to complement each other
Accompanying drawing 2 summer condition systematic schematic diagrams
Accompanying drawing 3 winter condition systematic schematic diagrams
Accompanying drawing 4 transition season systematic schematic diagrams
Detailed description of the invention
Below in conjunction with accompanying drawing 1～accompanying drawing 4, the present invention is described in further detail.
Data center module high temperature chilled water distributing system arranges two-stage (two-speed) pump, and No. one time pump adopts constant flow mode to move; Consider that the each branch road load of large-scale data center air-conditioning system, service time, refrigerant fed distance often exist larger difference, therefore chilled water secondary pump is set, make its variable-flow operation.Adopt pressure reduction control strategy, regulate the chilled-water flow of bypass pipe between point (collection) hydrophone, maintain the stable operation of system.
(1) source pump isolated operation+cold-storage groove cold-storage
In the time that source pump 2 evaporation side heat absorption capacities are greater than data center module user 5 cooling load of air-condition, high temperature low-temperature receiver 1 does not move, data center module user 5 and cold-storage groove 9, jointly as the evaporation side of source pump, while providing refrigeration duty, utilize unnecessary cold for cold-storage groove 9 cold-storages for data center module user 5.Under this operating mode, valve 3,4,5,6,7,8,16,17,18,19,20 open, all the other valve closings.The high-temperature tempering of data center module user 5 and cold-storage groove 9 is under the effect of water pump 11, and the valve 6 of flowing through enters the evaporimeter of source pump 2, and after cooling, return data machine room user 5 and cold-storage groove 9, complete circulation.In running, can, by changing the aperture of valve 16, regulate the flow of cold-storage groove 9, the cold of indirectly controlling data center module user 5 and cold-storage groove 9 distributes.
(2) source pump+high temperature low-temperature receiver parallel running
In the time that source pump 2 evaporation side heat absorption capacities are greater than data center module user 5 cooling load of air-condition, high temperature low-temperature receiver 1 brings into operation, and is combined and is born data center module refrigeration duty by source pump 2 and high temperature low-temperature receiver 1, and conventional air-conditioning user 7 is as the condensation side of source pump 2.Under this operating mode, valve 1,2,3,5,6,7,8,17,18,19,20 open, all the other valve closings.Data center module user 5 the high temperature chilled water backwater valve 3 of flowing through, a part, under the effect of water pump 10, flows into high temperature low-temperature receiver 1 through valve 2 and lowers the temperature; Remainder, under the effect of water pump 11, through valve 5, valve 6, flows into the cooling of source pump evaporimeter.This operating mode has been enabled high temperature low-temperature receiver 1 and has been freezed, and energy consumption for cooling is higher, without available cheap low-temperature receiver, therefore not to cold-storage groove 9 cold-storages.
(3) source pump+high temperature low-temperature receiver+cold-storage groove is released cold
In the time that data center module user 5 refrigeration duty exceedes total refrigerating capacity of high temperature low-temperature receiver 1 and source pump 2, released by cold-storage groove 9 cold, as cold supplement.Under this operating mode, valve 1,2,3,5,6,7,8,15,16,17,18,19,20 open, all the other valve closings.Data center module user 5 the high temperature chilled water backwater valve 3 of flowing through, a part, under the effect of water pump 10, flows into high temperature low-temperature receiver 1 through valve 2 and lowers the temperature; Remainder, under the effect of water pump 11, through valve 5, flows into source pump 2 and cold-storage groove 9 and lowers the temperature.By the aperture of control valve 15 and valve 2, change the flow of source pump 2, high temperature low-temperature receiver 1 and cold-storage groove 9, indirectly control the cooling ratio of three's cooperation.
(1) cooling device free cold supply+cold-storage groove cold-storage
In the time that the heat-sinking capability of cooling device 6 is greater than data center module user 5 refrigeration duty, high temperature low-temperature receiver 1 does not move, and cooling device 6, in bearing user's 5 refrigeration dutys, utilizes unnecessary cold for cold-storage groove 9 cold-storages.Under this operating mode, valve 3,4,5,8,11,12,13,14,16,19,20 open, all the other valve closings.The high-temperature tempering of data center module user 5 and cold-storage groove 9 is under the effect of water pump 11, and the valve 11 of flowing through enters plate type heat exchanger 8, and after cooling, return data machine room user 5 and cold-storage groove 9, complete circulation.Can pass through the aperture of control valve 16, change the flow of the user of data center 5 and cold-storage groove 9, indirectly control the cold of the two and distribute.
(2) cooling device free cold supply+high temperature low-temperature receiver parallel running
In the time that the heat-sinking capability of cooling device 6 is less than data center module user 5 refrigeration duty, by cooling device 6 and high temperature low-temperature receiver 1 air conditioning, and preferentially by cooling device 6 coolings, insufficient section by high temperature low-temperature receiver 1 as a supplement.Under this operating mode, valve 1,2,3,5,8,11,12,13,14,19,20 open, all the other valve closings.Data center module user 5 the high temperature chilled water backwater valve 3 of flowing through, a part, under the effect of water pump 10, flows into high temperature low-temperature receiver 1 through valve 2 and lowers the temperature; Remainder, under the effect of water pump 11, through valve 5 and valve 11, flows into plate type heat exchanger 8 and lowers the temperature.This operating mode has been enabled high temperature low-temperature receiver 1 and has been freezed, and energy consumption for cooling is higher, without available cheap low-temperature receiver, therefore not to cold-storage groove 9 cold-storages.
(3) cooling device free cold supply+high temperature low-temperature receiver+cold-storage groove is released cold
In the time that data center module user 5 refrigeration duty exceedes total refrigerating capacity of high temperature low-temperature receiver 1 and cooling device 6, released by cold-storage groove 9 cold, as cold supplement.Under this operating mode, valve 1,2,3,5,8,11,12,13,14,15,16,19,20 open, all the other valve closings.Data center module user 5 the high temperature chilled water backwater valve 3 of flowing through, a part, under the effect of water pump 10, flows into high temperature low-temperature receiver 1 through valve 2 and lowers the temperature; Remainder, under the effect of water pump 11, through valve 5, flows into plate type heat exchanger 8 and cold-storage groove 9 and lowers the temperature.By the aperture of control valve 15 and valve 2, change the flow of plate type heat exchanger 8, high temperature low-temperature receiver 1 and cold-storage groove 9, indirectly control the cooling ratio of three's cooperation.
Than prior art, the present invention has following advantage
(1) the present invention combines the multiple devices such as data center module high temperature low-temperature receiver, conventional air-conditioning user source pump, cooling device and cold-storage groove, propose " can be used for the composite type heat pump air conditioner system of providing multiple forms of energy to complement each other of data center module ", to utilize to greatest extent low grade heat energy and used heat as object, by " providing multiple forms of energy to complement each other ", meet user's air-conditioning demand.
(2) summer, high temperature low-temperature receiver and source pump be independent operating respectively, is born data center module user's refrigeration duty by high temperature low-temperature receiver; Born conventional air-conditioning user's refrigeration duty by source pump.
(3) winter, high temperature low-temperature receiver, source pump, cold-storage groove cooperation, adopt the preferential strategy moving of source pump, and by the four-way change-over valve of adjusting heat pump unit, data center module becomes the evaporation side of source pump." combined type heat pump air conditioner system " proposed by the invention can be realized " source pump isolated operation+cold-storage groove charging ", " source pump+high temperature low-temperature receiver parallel running operating mode " and " source pump+high temperature low-temperature receiver+cold-storage groove is released cold operating mode ".
(4) conditioning in Transition Season, in the time that conventional air-conditioning user does not have thermic load, closes source pump, high temperature low-temperature receiver, cooling tower and cold-storage groove air conditioning." combined type heat pump air conditioner system " proposed by the invention can be realized " cooling device free cold supply+cold-storage groove charging ", " cooling device free cold supply+high temperature low-temperature receiver parallel running operating mode " and " cooling device free cold supply+high temperature low-temperature receiver+cold-storage groove is released cold operating mode ".
(5) winter, source pump 2 only needs to consume a small amount of electric energy, can produce a large amount of heats, bear conventional air-conditioning user 7 thermic load, while is as data center module user 5 low-temperature receiver, the efficient cascade utilization of having realized heat, the energy efficiency coefficient of source pump can reach more than 10.0, and energy-saving effect is remarkable.
(6) " can be used for the composite type heat pump air conditioner system of providing multiple forms of energy to complement each other of data center module " proposed by the invention, be not limited to the air-conditioning system of single building " data center module ", for the large-size air conditioning system of region building " data center module ", be suitable for too, in the central cooling project of region, large-scale data center, will show larger energy-saving potential.
(7) in the present invention, the configuration of unit can be adjusted according to the cooling tower configuring condition of the actual employing of user, in the time that cooling device 6 adopts open cooling tower, need to configure plate type heat exchanger 8, by indirect heat exchange, realizes " free cold supply "; If cooling device 6 adopts closed cooling tower,, without configuration plate type heat exchanger 8, low-temperature cooling water is directly delivered to data center module user 5.
(8) the present invention introduces " cold-storage " technology, utilizes to greatest extent low-grade heat source and natural cold source, is cold-storage groove cold-storage; In data center module refrigeration duty peak period, " release cold " by cold-storage groove, make up the deficiency of cold.Data center module belongs to typical all-year-around cooling building, and air conditioner load is large, and the high crest segment of air conditioner load and the high crest segment of network load coincide, and introduce " cold-storage " technology, are conducive to realize " peak load shifting " of electrical network.
(9) the present invention can effectively make up that data center module used heat discharges in a large number, the low shortcomings and deficiencies that cause heating high energy consumption of conventional heat pump air conditioner evaporating temperature in winter.Along with Social Informatization Level improves gradually, large-scale data center machine room has been penetrated into all trades and professions, data center module is combined with conventional air-conditioning users such as near office, commercial buildings, build " the composite type heat pump air conditioner system of providing multiple forms of energy to complement each other ", can give full play to advantage separately, energy-saving potential is huge, and economic benefit is obvious; Be conducive to alleviate " greenhouse effects " and " urban heat land effect ", meet the principles and policies of country's " energy-saving and emission-reduction " and " rational energy cascade utilization ".
Claims (2)
1. the invention discloses the one composite type heat pump air conditioner system of providing multiple forms of energy to complement each other, mainly can be chiller unit by high temperature low-temperature receiver 1(, source pump, steam type lithium bromide absorption-type machine unit, hot water lithium bromide absorbing unit, Evaporative Cooling Air Conditioning etc.), source pump 2, water knockout drum 3, water collector 4, the corresponding each data center machine room plate type heat exchanger of data center module user 5(single building corresponding water-cooling air conditioner/region building), source pump summer condition cooling device 6(can be cooling tower, heat source tower etc.), conventional air-conditioning user 7, plate type heat exchanger 8, cold-storage groove 9, pump 10 of high temperature chilled water, circulating pump 11, cooling water pump 12, conventional air-conditioning user side water pump 13 and secondary pump 14 form, between them, connect by pipeline, utilize valve to switch and regulate.
2. the present invention has following characteristics:
(1) data center module adopts high temperature low-temperature receiver, bears annual production refrigeration duty, and high temperature low-temperature receiver can be the various ways such as chiller unit, source pump, steam type lithium bromide absorption-type machine unit, hot water lithium bromide absorbing unit, Evaporative Cooling Air Conditioning.
(2) data center module high temperature chilled water distributing system arranges two-stage (two-speed) pump, and No. one time pump adopts constant flow mode to move, and secondary pump adopts variable-flow operation; The chilled-water flow that divides bypass pipe between (collection) hydrophone by adjusting, maintains the stable operation of system.
(3) summer, high temperature low-temperature receiver and source pump be independent operating respectively, is born data center module user's refrigeration duty by high temperature low-temperature receiver; Born conventional air-conditioning user's refrigeration duty by source pump.
(4) winter, by the four-way change-over valve of adjusting heat pump unit, conventional air-conditioning user is converted to the condensation side of source pump, and data center module becomes the evaporation side of source pump; By the refrigeration duty of high temperature low-temperature receiver 1, source pump 2 and cold-storage groove 9 shared data center modules, conventional air-conditioning user 7 is taking the used heat of data center module as thermal source, and the step of having realized heat energy rationally utilizes." combined type heat pump air conditioner system " proposed by the invention can be realized " source pump isolated operation+cold-storage groove charging ", " source pump+high temperature low-temperature receiver parallel running operating mode " and " source pump+high temperature low-temperature receiver+cold-storage groove is released cold operating mode ".
(5) transition season, in the time that outdoor wet-bulb temperature is lower, adopts the form of providing multiple forms of energy to complement each other, and by the refrigeration duty of cooling device 6, high temperature low-temperature receiver 1 and cold-storage groove 9 shared data center modules, realizes " free cold supply "." combined type heat pump air conditioner system " proposed by the invention can be realized " cooling device free cold supply+cold-storage groove charging ", " cooling device free cold supply+high temperature low-temperature receiver parallel running operating mode " and " cooling device free cold supply+high temperature low-temperature receiver+cold-storage groove is released cold operating mode ".
(6) " multifunctional combination is for type integral air conditioner unit " proposed by the invention, is not limited to data center module, needs the building of long-term cooling for IDC machine room, communications equipment room etc., is suitable for too.The present invention is not limited to single building " data center module ", for the large-size air conditioning system of region building " data center module ", also has good applicability.
(7) in the present invention, system form can be adjusted according to the cooling tower configuring condition of the actual employing of user, in the time that cooling device 6 adopts open cooling tower, need to configure plate type heat exchanger 8, by indirect heat exchange, realizes " free cold supply "; If cooling device 6 adopts closed cooling tower,, without configuration plate type heat exchanger 8, low-temperature cooling water is directly delivered to data center module user 5.
(8) the present invention utilizes low-grade heat source and natural cold source to realize cold-storage to greatest extent; In data center module refrigeration duty peak period, " release cold " by cold-storage groove, strengthen cooling system ability.For all-year-around cooling building, air conditioner load is large, and the high crest segment of air conditioner load and the high crest segment of network load coincide, and introduces " cold-storage " technology, is conducive to realize " peak load shifting " of electrical network.
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