CN207706610U - A kind of adiabatic closed cooling system for data center - Google Patents
A kind of adiabatic closed cooling system for data center Download PDFInfo
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- CN207706610U CN207706610U CN201721853471.2U CN201721853471U CN207706610U CN 207706610 U CN207706610 U CN 207706610U CN 201721853471 U CN201721853471 U CN 201721853471U CN 207706610 U CN207706610 U CN 207706610U
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Abstract
The utility model discloses a kind of adiabatic closed cooling system for data center, adiabatic enclosed wet cooling tower, water cooled chiller and data center air-conditioner end are connected by valve, and control system realizes following Three models switching by control valve：Handpiece Water Chilling Units refrigerating mode, for water cooled chiller as low-temperature receiver, the evaporator by handpiece Water Chilling Units is that data center's air conditioning terminal is cooled down；Natural cooling pattern is cooled down using adiabatic closed cooling tower as low-temperature receiver for data center's air conditioning terminal；Prefabricated refrigerating mode after adiabatic enclosed wet cooling tower water outlet is directly entered the further cooling of handpiece Water Chilling Units evaporator, cools down data center air-conditioner end by the way of adiabatic enclosed wet cooling tower and water-cooled cooling water machine group series operation.The utility model increases prefabricated refrigerating mode newly, which uses the pattern of handpiece Water Chilling Units and adiabatic closed cooling tower series operation, handpiece Water Chilling Units run time to greatly shorten, and power consumption is greatly reduced.
Description
Technical field
The utility model is related to industry cooling fields, more particularly, to a kind of adiabatic closed system of cooling for data center
System.
Background technology
With the fast development of cloud computing and big data, the energy consumption of data center has become the project being concerned.Number
According in the energy consumption at center, the energy consumption of air-conditioning system reaches 40%~60%, and data center is mainly commented using two technical indicators
Valence energy consumption and water consume situation, energy consumption PUE values, PUE is efficiency, is total electric energy and the institute of all electrical equipment consumption
It is data center water consumed resource and data center's information technoloy equipment whole year to have the ratio between total electric energy that information technoloy equipment consumes, water consume WUE
Consume the ratio of electricity, unit L/kwh.Data center PUE is 2.0 in the average value of global computer room, in the flat of developed country
Mean value is about 1.8, and data center's PUE average values it is minimum be in Japanese some areas, but in the most area in China,
The energy consumption of data center is excessively high, and most of PUE average values are still generally more than 2.0, there is larger difference compared with international most advanced level
Away from energy-saving potential is huge.Data center's water consume is mainly used for the consumption of cooling tower, and main includes that heat exchange is evaporated water consumption, wafted and brimed with
Water consumption and blowdown water consumption.
Data center's cabinet quantity determines cabinet calorific value, and cabinet quantity is more multiple, and heat is bigger, is sent out according to data center
From small to large, precision air conditioner, cooling by wind or water cooled chiller can be used in the host of air-conditioning and cooling water system to heat
What is discussed Deng, the utility model is data center cooling system using water cooled chiller and cooling tower.
In order to reduce the PUE of data center, existing cooling system has used natural cooling technology, what the utility model was discussed
Natural cooling technology is cooling water system natural cooling technology, and chilled water supply water temperature is 12 DEG C, and data center is sent out throughout the year
Heat needs to freeze, therefore can be air conditioning terminal cooling using cooling tower when environment temperature is relatively low, without opening handpiece Water Chilling Units
Or handpiece Water Chilling Units are opened in part, handpiece Water Chilling Units are one of main current consuming apparatus in air-conditioning system operation, therefore do not open cold water
Handpiece Water Chilling Units are opened in unit or part can substantially reduce PUE values.
There are mainly two types of existing large-scale data center cooling water systems：(1) water-cooled cold water unit, open cooling tower and plate
The open cooling system that formula heat exchanger is combined；(2) closed system of cooling that water-cooled cold water unit and closed cooling tower are combined
System.The operation of open cooling system (1) can take various modes according to the difference of ambient air temperature, and when summer uses handpiece Water Chilling Units
Refrigeration mode, the chilled water for supplying air conditioning terminal are produced by water cooled chiller, and cooling tower is the condenser of water cooled chiller
Cooling water is provided, plate heat exchanger does not use；Winter uses cooling tower refrigeration mode, and water cooled chiller is out of service, cooling
The cooling water that tower is produced carries out heat exchange by the return water of plate heat exchanger and air conditioning terminal, by the Cooling capacity exchanging of cooling water to sky
Adjust end；Transition season uses pre- refrigeration mode, and environment temperature is between the supply water temperature and return water temperature of chilled water, water cooling
Handpiece Water Chilling Units operation at part load, another part load are exchanged by plate heat exchanger to chilled water by the cooling water of cooling tower
Side.The operation of closed cooling system (2) can also use various modes according to the difference of ambient air temperature, and when summer uses cooling-water machine
Group refrigeration mode, the method for operation are consistent with open cooling system cooling in summer pattern；Cooling tower refrigeration mode is used when winter, is closed
Formula cooling system plateless heat exchanger, therefore cooling water can directly feed air conditioning terminal.
Data center's open cooling system is primarily present following characteristics：1) cooling end of the open cooling tower as cooling water
Part, cooling water are in direct contact with air, are easy growth bacterium and microorganism, and water quality is poor, to the condenser of water cooled chiller,
Cooling water circulation pipeline and plate heat exchanger cause fouling, it is dirty stifled the problems such as；2) open cooling tower is using filler as heat exchanging part
Part, geomantic omen and filler direct contact area are big, and heat exchange efficiency is high, and water consumption is also huge；3) air conditioning terminal is inconvenient to clean to water
Matter requires high, it is not possible to cooling water is passed directly into air conditioning terminal, therefore the necessary mounting plate type heat exchanger of open cooling water system,
The outer circulation that the heat of the interior recirculated water of air conditioning terminal is transferred heat to cooling tower cooling water, generally there are 1.5~2 DEG C of heat exchange temperature
Difference, in order to utilize natural cooling, necessary low 1.5~2 DEG C of ability of environment temperature to utilize natural cooling, therefore when handpiece Water Chilling Units booting
Between can extend, water cooled chiller power of motor is very huge, the whole year run power consumption it is more；4) open cooling water system is in order to more
Good utilisation natural cooling supplies the freezing of air conditioning terminal under the type of cooling that transition season use is freezed in advance, the type of cooling
The evaporator of plate heat exchanger and water-cooled cold water unit that water passes through is series connection, and cooling tower cooling water after cooling is by board-like
The condenser of heat exchanger and water-cooled cold water unit is also concatenated, and chilled water and cooling water are respectively by plate heat exchanger and cold water
Evaporator, the condenser of unit separate, and water flow control system is relatively easy, for handpiece Water Chilling Units, evaporator and condensation
Device has a minimum discharge requirement, and the lift difference of water pump is little under different mode.
Data center's closed cooling water system is primarily present following characteristics：1) cooling end of the closed cooling tower as cooling water
Part, the cooling water inside heat exchanger are not directly contacted with air, can preferably ensure water quality, not interfere with pipeline, water cooling cold
Water train condenser, the fouling of air conditioning terminal heat exchanger and dirty stifled；Since closed water system water quality is preferable, it is not necessarily to plate-type heat-exchange
Device, therefore the cooling water of winter natural cooling meets when water supply water temperature requires can directly feed air conditioning terminal, no open type cooling
The heat transfer temperature difference of system, handpiece Water Chilling Units downtime is long to be compared with open cooling system, and it is less that the whole year runs power consumption；Tradition is closed
If the feeding spraying pump of formula cooling tower is cut off, the cooling capacity of closed cooling tower substantially decays, therefore feeding spraying pump cannot be cut off,
Shower water evaporation capacity in transition season and winter is big, and cooling is not helped, and invalid evaporation water consumption increases, and runs throughout the year
Water consumption is more less slightly than open cooling tower, but absolutely water consumption is still huge；Traditional closed cooling water system, only summer cold water
Unit refrigerating mode and winter cooling tower refrigerating mode cause transition season to still need to out handpiece Water Chilling Units, power consumption without pre- refrigeration mode
Amount is big.
The water consumption of open cooling tower and closed cooling tower mainly has three parts, heat dissipation evaporation water consumption, drift ice water consumption and row
Dirty water consumption.Amount of heat, evaporated water and thermic load, geomantic omen ratio, environment phase are taken away in the evaporation of the water of open type or closed cooling tower
It is related to humidity, if geomantic omen ratio, without optimization, invalid evaporation amount can be larger, and traditional open cooling tower and closed cooling tower are long-term
Spray operation, heat dissipation evaporation water consumption rate (ratio of quantity of circulating water when water consumption rate is evaporated water and 5 DEG C of disengaging water temperature differences) is 1%
~1.5%.Open cooling tower is since shower water is cooling water, and structure feature determines that wind turbine is closer apart from nozzle, and the water that floats is serious,
Water consumption rate is 0.5%；Open cooling tower is big with atmosphere contacting surface, and microorganism and algae are easy breeding, in order to slow down fouling, need
Water treatment facilities are designed in pond of cooling tower after the constantly concentration of the metal ions such as calcium and magnesium to need periodically to arrange high-concentration metallic ions
Sewage just can ensure that non-scaling, and open cooling tower water amount of blowdown is big, blowdown water consumption rate according to raw water quality gap it is larger (1%~
5% differs).For traditional closed cooling tower due to spraying throughout the year, invalid evaporation water consumption is big, therefore metal ion after dosing in water pond
Concentration is also merchandised concentration, and blowdown flow rate is inferior to open cooling tower.The water consumption rate of Integrated comparative, open cooling tower is 2%~4%, is closed
The water consumption rate of formula cooling tower is 1.5%~2%, and the water consumption of open cooling tower is bigger than the water consumption of closed cooling tower.
Utility model content
The purpose of this utility model is to provide a kind of adiabatic closed cooling system for data center, to solve existing number
Demand that is huge according to center water consumption, reducing energy consumption, reduce blowdown flow rate, is that a kind of environment-friendly type data center cooling water system solves
Scheme.
To achieve the above object, the utility model adopts the following technical solution：A kind of adiabatic enclosed for data center
Cooling system, including adiabatic enclosed wet cooling tower, water cooled chiller, inner-outer circulation pump group and data center air-conditioner end,
The water cooled chiller includes condenser and evaporator, it is characterised in that the thermal insulation enclosed wet cooling tower, water cooling cold water
Unit is connected with data center air-conditioner end by valve, and control system realizes that following Three models are cut by control valve
It changes；
Handpiece Water Chilling Units refrigerating mode, for water cooled chiller as low-temperature receiver, the evaporator by water cooled chiller is data
Center air-conditioner end is cooled down, and cooling tower undertakes the load of water cooled chiller condenser；
Natural cooling pattern is cooled down using adiabatic closed cooling tower as low-temperature receiver for data center's air conditioning terminal；
Prefabricated refrigerating mode, it is adiabatic by the way of adiabatic enclosed wet cooling tower and water cooled chiller series operation
The water outlet of enclosed wet cooling tower be directly entered water cooled chiller evaporator it is further cooling after, to data center air-conditioner end into
Row cooling.
Further, the output end of condenser is connect with the input terminal of adiabatic enclosed wet cooling tower, adiabatic enclosed evaporation
The output end of cooling tower is connected by the input terminal of outer circulation pump group and condenser, and evaporator output end is connected by internal circulation pump group
It is connected to data center's air conditioning terminal input terminal, and evaporator input terminal is back to from data center's air conditioning terminal output end, it is described
The second valve and third valve, second valve and third valve are set gradually between outer circulation pump group and condenser input terminal
Junction and condenser output end between be arranged the 4th valve；Between the evaporator input terminal and data center's air conditioning terminal
The 6th valve and the 7th valve are set gradually, is arranged between the 6th valve and the 7th valve junction and evaporator output end
8th valve, the outer circulation pump group and the second valve junction are also connected to the 6th valve and the 7th valve by the first valve
Junction, the second valve and third valve junction are also connected to the 7th valve and data center air-conditioner end by the 5th valve
Junction, each valve is held to be connected with control system.
Further, the control system is also connect with outer circulation pump group frequency converter and internal circulation pump group frequency converter.
Further, data center's air conditioning terminal input terminal setting supply water temperature sensor and pressure of supply water sensing
Device, data center's air conditioning terminal output end setting return water temperature sensor and pressure of return water sensor, adiabatic enclosed cooling
Installation environment Temperature Humidity Sensor on tower, the supply water temperature sensor, return water temperature sensor, return at pressure of supply water sensor
Water pressure sensor, environment humidity sensor are connect with control system, and control system is according to environment humidity sensor, confession
Temperature value that water temperature sensor and return water temperature sensor measure determines switch mode.
Further, wind turbine is set at the top of the adiabatic enclosed wet cooling tower, adiabatic enclosed wet cooling tower top sets copper
Pipe aluminum fin-stock heat exchanger, copper pipe aluminum fin heat exchanger set inlet and outlet, and adiabatic enclosed wet cooling tower lower part sets thermal insulation
Humidifier, bottom set storage area, are equipped with spray head above copper pipe aluminum fin heat exchanger, spray head passes through spray pump and storage area
It is connected, storage area is also connected to adiabatic humidiflcation device, the thermal insulation enclosed evaporation cooling by adiabatic humidiflcation booster pump, solenoid valve
Tower can switch in following three kinds of operational modes, and three kinds of operational modes are respectively adiabatic refrigerating mode, spraying cooling pattern and do
Formula refrigerating mode realizes adiabatic refrigerating mode by wind turbine and adiabatic humidiflcation device, spraying cooling pattern is realized by spray head, by wind
Machine realizes dry calibration pattern, and based on thermal insulation cooling, supplemented by spray and dry calibration.
The advantageous effects of the utility model are：
Adiabatic enclosed evaporative cooling system increases prefabricated refrigerating mode newly, which uses water cooled chiller and thermal insulation
The pattern of closed cooling tower series operation, water cooled chiller operation at part load, compared with open cooling system and plateless
Heat exchanger, can supplying cold directly to air conditioning terminal, therefore water cooled chiller run time greatly shortens, water cooled chiller power consumption
Amount is greatly reduced, the transition season water cooled chiller operation at part load compared with closed cooling system, another part cold by
Adiabatic enclosed wet cooling tower cooling, the load of water cooled chiller decline, and can equally reduce the consumption of annual water cooled chiller
Electricity, therefore compared with prior art, the power consumption of adiabatic enclosed evaporative cooling system declines；
Under adiabatic enclosed evaporative cooling system winter natural cooling pattern and the prefabricated refrigerating mode of transition season, outer circulation pump
Group is closed, and internal circulation pump group is opened, and according to data center's load variable frequency adjustment flow, outer circulation pump group power is larger, transition
Season and winter operation time are longer, and consumption of data center can be substantially reduced by closing outer circulation pump group.
, can be abundant by the cryogenic energy utilization of natural environment under winter natural cooling pattern and the prefabricated refrigerating mode of transition season,
Cold from adiabatic enclosed wet cooling tower cooling water directly can completely or partially supply data center end, and no indirect type changes
Hot device, no heat transfer temperature difference reduce water cooled chiller run time, substantially reduce consumption of data center.
Adiabatic enclosed wet cooling tower using based on adiabatic humidiflcation cooling, the cooling side supplemented by spraying cooling and dry calibration
Formula substitutes open cooling tower or the long-term spray model of closed cooling tower, and it is spraying cooling water consumption that adiabatic humidiflcation, which cools down water consumption,
50%, water consumption is substantially reduced, non-renewable water resource is saved；
The water consumption of adiabatic enclosed wet cooling tower system reduces, and rate of water make-up also declines therewith, in order to reduce fouling risk
It can be reduced with the water treatment facilities and chemical agent suppressed growth of microorganism, blowdown expense and environmental protection pressure can be substantially reduced；
Adiabatic enclosed evaporative cooling system can accurate measuring environment using PLC control system and row automation control component
Radiating condition and thermic load, pass through the operating status of each component of automation component regulating system of system, match cooling need
It asks, environment temperature declines or load reduces, and can reduce the operation work(of cooling tower, water cooled chiller, inner-outer circulation water pump automatically
Rate, for the water consumption of cooling tower to turn down cooling capacity, final realize reduces energy consumption, the target of water consume.System automation monitors
The maintenance difficulties of equipment are substantially reduced with operation, save user's operating cost.The adiabatic closed cooling tower of the utility model application, is adopted
Based on adiabatic humidiflcation cooling, the operation reserve supplemented by spraying cooling and dry calibration can substantially reduce water system water consumption
Amount reduces dosage, is conducive to environmental protection.
Description of the drawings
Fig. 1 is the flow chart of data center's thermal insulation enclosed evaporative cooling system.
Fig. 2 is the structural schematic diagram of adiabatic enclosed wet cooling tower.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the flow chart of available data center open cooling system.
Fig. 5 is open cooling system and adiabatic closed cooling system operating cost comparison diagram.
Specific implementation mode
The technical solution of the utility model is had a talk about in further detail With reference to embodiment bright：
A kind of adiabatic closed cooling system for data center, including：Adiabatic enclosed wet cooling tower 1, outer circulation pump
Group 2, internal circulation pump group 3, water cooled chiller 4, PLC control system 5, automation control component 6, constant pressure water compensation apparatus 7, data
Center air-conditioner end 8, reversed return system pipeline 9, adiabatic closed cooling system is according to environment humidity sensor 6-16 and water supply
The calculated data center's thermic load auto-controll operation of temperature sensor 6-9, return water temperature sensor 6-10 is in handpiece Water Chilling Units
Refrigerating mode, natural cooling pattern and prefabricated refrigerating mode.
The water supply water temperature of data center's air conditioning terminal 8 requires constant in 12~18 DEG C of range throughout the year, and sends out throughout the year
Heat is big, needs provide chilled water for data center's air conditioning terminal 8 within daily 24 hours.
Summer outdoor environment temperature is higher, and low-temperature receiver is used as using cooling unit, for handpiece Water Chilling Units refrigerating mode, under the pattern
The second valve of valve 6-2, third valve 6-3, the 6th valve 6-6, the 7th valve 6-7 of unlatching Fig. 1, the first valve 6-1 of closing,
4th valve 6-4, the 5th valve 6-5, the 8th valve 6-8, internal circulation pump group 3 and outer circulation pump group 2 start, internal circulation pump group
Frequency converter 6-14 is according to the difference of pressure of supply water sensor 6-10 and pressure of return water sensor 6-13 and the automatic tune of setting value comparison
Section, the evaporator of water cooled chiller 4 produce chilled water, data center's air conditioning terminal 8, quilt are delivered to by internal circulation pump group 3
Water cooled chiller evaporator being back to using water pump overbottom pressure after the heating of air conditioning terminal return air and forming cycle, cooling water enters thermal insulation and closes
After formula wet cooling tower 1 carries out cooling, pass through after outer circulation pump group 2 is delivered to the condenser heating of water cooled chiller 4
Water pump overbottom pressure is back to adiabatic closed cooling tower formation and recycles, and the evaporator of water cooled chiller undertakes data center under the pattern
Whole loads of air conditioning terminal, cooling tower undertake the load of water cooled chiller condenser.Adiabatic closed cooling tower under the pattern
Spray model and adiabatic humidiflcation pattern are may operate at, (is supplied water according to environment humidity sensor 6-16 and data central hot load
Temperature sensor 6-9, return water temperature sensor 6-10) automatic decision determination, wet-bulb temperature is higher, thermic load is bigger, operates in
Spray model, on the contrary operate in adiabatic humidiflcation pattern.Cooling capacity is strong under spray model, and water consumption rate is 1~1.5%, and is sprayed
Pump and wind turbine are all turned on, and power consumption is big, and the cooling capacity of adiabatic closed cooling tower is slightly weak under adiabatic refrigerating mode, and water consumption rate is
0.5%, spray pump is closed, and wind turbine quantity can be reduced, therefore water consumption greatly reduces, and power consumption is also smaller than spray model, due to
Water consumption reduction causes metal ion scaling rate to slow down, and the water treatment agent amount of dispensing is reduced, and blowdown flow rate is also reduced therewith.
Winter outdoor environment temperature is relatively low, is natural cooling pattern using adiabatic closed cooling tower as low-temperature receiver, opens the
One valve 6-1, the 4th valve 6-4, the 5th valve 6-5, the 8th valve 6-8 close the second valve 6-2, third valve 6-3, the
Six valve 6-6, the 7th valve 6-7 are closed, and internal circulation pump group 3 starts, and outer circulation pump group 2 is closed, internal circulation pump group frequency converter 6-
14 automatically adjust according to for pressure of return water sensor difference (pressure of return water sensor 6-13, pressure of supply water sensor 6-12)；Absolutely
Chilled water of the hot enclosed wet cooling tower water after cooling as supply, data center's air-conditioning is delivered to by internal circulation pump group 3
End 8 is back to adiabatic closed cooling tower after being heated by air conditioning terminal return air by the overbottom pressure of internal circulation water pump, forms cycle, water
Cold handpiece Water Chilling Units 4, outer circulation pump group 2 are out of service, under natural cooling pattern adiabatic closed cooling tower may operate at spray model,
Under adiabatic humidiflcation pattern and dry calibration pattern, determined according to ambient wet bulb temperature and data central hot load automatic decision, it is wet
Ball temperature is higher, thermic load is bigger, operates in spray model, as wet-bulb temperature and thermic load decline, may operate at adiabatic add
Wet model and dry calibration pattern, cooling capacity is strong under spray model, water consumption rate 1%, and spray pump and wind turbine are all turned on,
Power consumption is big, and the cooling capacity of adiabatic closed cooling tower is slightly weak under adiabatic refrigerating mode, and water consumption rate 0.5%, spray pump is closed,
Wind turbine quantity can be reduced, therefore water consumption greatly reduces, and power consumption is also smaller than spray model.
Transition season environment temperature is cooled down using water cooled chiller between summer and winter and combines cooling tower cooler
The pattern being combined is prefabricated refrigerating mode, using the side of adiabatic enclosed wet cooling tower and water cooled chiller series operation
Formula opens the first valve 6-1, third valve 6-3, the 5th valve 6-5, the 6th valve 6-6, closes the second valve 6-2, the 4th valve
Door 6-4, the 7th valve 6-7, the 8th valve 6-8 are closed, and internal circulation pump group 3 starts outer circulation pump group 2 and closes, and cooling water is by exhausted
After the cooling of hot closed cooling tower, into water cooled chiller 4 evaporator it is further cooling after be delivered to by internal circulation pump group 3
After 8 heat temperature raising of air conditioning terminal, using internal circulation water pump overbottom pressure after the heating of the condenser of water cooled chiller 4, it is back to absolutely
Hot closed cooling tower forms cycle, first passes through the adiabatic enclosed wet cooling tower 1 and cools down, after by the internal circulation pump group 3
The evaporation for being delivered to the water cooled chiller further cools, and passes through the number using 3 overbottom pressure of internal circulation pump group
It is user's cooling according to water cooled chiller when forming cycle summer operation behind center air-conditioner end 8, adiabatic closed cooling tower is cold
Condenser cools down, and the cooling water of thermal insulation closed cooling tower is directly user's cooling when winter operation.Transition season cooling tower goes out water temperature
Degree can enter pre- refrigeration mode less than 18 DEG C, and cooling tower water outlet (being less than 18 DEG C) is directly entered water cooled chiller evaporator,
Water outlet is down to 12 DEG C, and return water enters cooling tower after first passing through condenser, due to making full use of natural cold quantity, handpiece Water Chilling Units load drop
Low, power consumption substantially reduces.
Adiabatic enclosed wet cooling tower is by wind turbine 1-1, the first solenoid valve 1-2, adiabatic humidiflcation device 1-3, copper pipe aluminum fin
Heat exchanger 1-4, spray pump 1-5, second solenoid valve 1-6, liquid level sensor 1-7, adiabatic humidiflcation booster pump 1-8, injection spray pipe moisturizing
Pipe 1-9 compositions, as shown, setting wind turbine 1-1, adiabatic enclosed wet cooling tower top at the top of the thermal insulation enclosed wet cooling tower
If copper pipe aluminum fin heat exchanger 1-4, copper pipe aluminum fin heat exchanger 1-4 sets water inlet 1-10 and water outlet 1-11, and adiabatic enclosed is steamed
Hair cooling tower lower part sets adiabatic humidiflcation device 1-3, and bottom sets storage area, spray head is equipped with above copper pipe aluminum fin heat exchanger 1-4,
Spray head is connected by spray pump 1-5 with storage area, and storage area is also connected by adiabatic humidiflcation booster pump 1-8, second solenoid valve 1-6
It is connected to adiabatic humidiflcation device 1-3, adiabatic humidiflcation device 1-3 also passes through the first solenoid valve 1-2, injection spray pipe water supply pipe 1-9 and the external world
Connection.Storage area is equipped with overflow port 1-12 and sewage draining exit 1-13.
Adiabatic enclosed wet cooling tower operation can cut three kinds of operational modes at any time, use based on adiabatic refrigerating mode, spray
Strategy supplemented by leaching refrigerating mode and dry calibration pattern, whole year operation can substantially reduce water consumption；Under spraying cooling pattern, wind
Machine 1-1, spray pump 1-5 are opened, and adiabatic humidiflcation device 1-3, solenoid valve 1-2, solenoid valve 1-6, adiabatic humidiflcation booster pump are closed, institute
The exchange capability of heat for stating spraying cooling pattern thermal insulation closed cooling tower is most strong, and water consumption rate is higher, is 1~1.5%, power consumption is also opposite
Higher, wind turbine 1-1 quantity can be increased or decreased according to cooling requirement, and it is higher that spraying cooling pattern is suitable for summer environment temperature
Situation；Wind turbine 1-1, adiabatic humidiflcation device 1-3, solenoid valve 1-2, solenoid valve 1-6, adiabatic humidiflcation booster pump under adiabatic refrigerating mode
It opens, spray pump 1-5 is closed, and adiabatic humidiflcation booster pump is opened according to the signal break of liquid level sensor 1-7, and the thermal insulation adds
The exchange capability of heat of wet refrigerating mode is slightly weak, is only second to spraying cooling pattern, and water consumption rate declines to a great extent, be 0.5%, power consumption with
The reduction of wind turbine quantity also declines to a great extent, and adiabatic humidiflcation refrigerating mode is suitable for transition season；Under dry calibration pattern, wind turbine 1-1
It opens, spray pump 1-5 unlatchings, adiabatic humidiflcation device 1-3, solenoid valve 1-2, solenoid valve 1-6, adiabatic humidiflcation booster pump are closed, absolutely
The hot anhydrous evaporation of enclosed wet cooling tower, without water consumption, it is lower to be applicable in winter environment temperature although cooling capacity declines
Situation.It should be noted that summer, winter and transition season described here and summer, winter and the conditioning in Transition Season in total system
The control strategy of section is not fully identical, but is all according to environment humidity sensor, supply water temperature sensor and return water temperature
The temperature value that sensor measures is spent to determine the pattern of switching.
Under adiabatic enclosed evaporative cooling system winter natural cooling pattern and the prefabricated refrigerating mode of transition season, outer circulation pump
Group is closed, and internal circulation pump group is opened, according to data center's load variable frequency adjustment flow, due to prefabricated refrigerating mode sewerage water
Road flow longest, resistance is maximum, and internal circulation water pump designs when designing according to H-Max, and configures frequency converter, in summer cold water
Flow is reduced by frequency conversion under unit refrigerating mode and winter natural cooling pattern, outer circulation pump group power is larger, transition season
Longer with the winter operation time, closing can substantially reduce consumption of data center.
Adiabatic enclosed evaporative cooling system substitutes traditional open cooling tower or enclosed using adiabatic enclosed wet cooling tower 1
Water consumption smaller can be explained from principle, operation is sprayed throughout the year with traditional closed cooling tower compared with open cooling tower for cooling tower
It is compared based on pattern, due to using three kinds of refrigerating mode partition runnings, and based on run time cools down with adiabatic humidiflcation, water consumption
It declines to a great extent than the prior art；Water consumption declines, and can reduce the rate of water make-up in cooling tower water pond, contain a certain concentration in industrial water
The metal ions such as calcium, magnesium, if not adding slow-release scale inhibitor is easy fouling, concentration more higher easier fouling reduces cooling tower water pond
The concentration of metal ions for inside easily causing fouling reduces water amount of blowdown, drop to reduce the dosage of slow-release scale inhibitor in water pond
Low environmental protection the risk and cost.
Adiabatic enclosed vaporized coolant stream system uses PLC control system 5 and row automation control component 6, acquisition adiabatic
Temperature Humidity Sensor 6-16, supply water temperature sensor 6-9, return water temperature sensor 6-10, this practicality are installed on closed cooling tower
Different parameters can be arranged with using local meteorological condition different in the novel data-center applications arrange parameter, if working as
It is 28 DEG C that ground summer, which designs wet-bulb temperature, and the supply water temperature of data center's air conditioning terminal 8 is 12 DEG C, and return water temperature is 18 DEG C, when
Ambient wet bulb temperature is higher than 21 DEG C, and supply backwater temperature difference is not less than 4 DEG C, is judged as summer handpiece Water Chilling Units refrigerating mode, if supplying back
Water temperature difference is less than 4 DEG C, is judged as prefabricated refrigerating mode；It is according to sentencing with cooling tower leaving water temperature when wet-bulb temperature is less than 21 DEG C
Determine operational mode, when cooling tower leaving water temperature be less than 12 DEG C, and supply backwater temperature difference be less than 4 DEG C, then operate in natural cooling pattern,
If the temperature difference is more than 4 DEG C, then the pre- refrigeration refrigerating mode of operation；When cooling tower leaving water temperature is between 12~21 DEG C, and when for return water
The temperature difference is not less than 4 DEG C, then running prefabricated refrigerating mode.Under different system running patterns, water temperature is gone out according to cooling tower
The parameter of curve of degree and setting, can determine whether the operational mode of adiabatic enclosed wet cooling tower；PLC control system 5 can optimize water cooling
The power-consuming component of handpiece Water Chilling Units 4, adiabatic enclosed wet cooling tower 1, internal circulation pump group 3, outer circulation pump group 2, makes full use of environment
Cooling capacity reduces operation electrical power consumed and water consumption.
The design conditions of certain data center's cooling water system, with 4 refrigerating capacitys, for 1900TR, (1RT is water cooled chiller
Handpiece Water Chilling Units 3.516kw) are a unit, and water cooled chiller 3 is standby with 1, totally 4 units, cooling tower summer design conditions
Lower circulating water flow is 3600m3/h, and the Inlet and outlet water of cooling tower designs 37/32 DEG C of water temperature, 29 DEG C of wet-bulb temperature, and winter designs work
Cooling-tower circulating water flow 2863m3/h under condition, 18/12 DEG C of water temperature, wet-bulb temperature are 8 DEG C, it is desirable that give the confession of air conditioning terminal throughout the year
Coolant-temperature gage is 12 DEG C, and return water temperature is 18 DEG C.
The utility model evaporates cooling tradition with adiabatic enclosed and is compared with open cooling system, compares operation energy consumption and water consume
And operating cost；
Fig. 4 show the flow chart of open cooling system.Open cooling tower degree of approximation (the leaving water temperature and wet bulb of cooling tower
The difference of temperature) it is 2.5 DEG C, 1.5 DEG C of the cold and hot both sides fluid design temperature difference of plate heat exchanger；Summer outdoor environment temperature is higher,
It is handpiece Water Chilling Units refrigerating mode using cooling unit as low-temperature receiver, open cooling tower cools down for handpiece Water Chilling Units condenser, the pattern
Lower valve 10-8,10-10,10-12 for opening Fig. 4, closes valve 10-6,10-7,10-9,10-11,10-13, internal circulation pump group
10-3 and outer circulation pump group 10-2, open cooling tower 10-1, handpiece Water Chilling Units 10-4 are started, and plate heat exchanger 10-5 does not work,
When open cooling tower leaving water temperature is higher than 18 DEG C, you can operate in handpiece Water Chilling Units refrigerating mode；Winter outdoor environment temperature is relatively low,
Use open cooling tower for low-temperature receiver, Open valve 10-6,10-9,10-11,10-13 under the refrigerating mode, closing valve 10-7,
10-8,10-10,10-12, internal circulation pump group 10-3, outer circulation pump group 10-2, open cooling tower 10-1 are started, plate-type heat-exchange
Device 10-5 work, handpiece Water Chilling Units 10-4 are shut down, when cooling tower leaving water temperature is less than 12 DEG C, using open cooling tower refrigeration mode；
Transition season is combined the pattern of refrigeration, Open valve 10-7,10-9,10-10,10- using open cooling tower and handpiece Water Chilling Units
11, close valve 10-6,10-8,10-12,10-13, internal circulation pump group 10-3, outer circulation pump group 10-2, open cooling tower 10-1
It starts, plate heat exchanger 10-5 work, handpiece Water Chilling Units 10-4 is operated in sub-load.
Open cooling system runs water consumption power consumption and calculates such as following table.
And specific embodiment according to the present utility model, adiabatic closed cooling tower degree of approximation (leaving water temperature of cooling tower with
The difference of wet-bulb temperature) also it is 2.5 DEG C, when adiabatic closed cooling tower leaving water temperature is higher than 18 DEG C, into complete handpiece Water Chilling Units
Refrigerating mode, adiabatic closed cooling tower provide cooling water, water cooled chiller, inner-outer circulation for the condenser of water cooled chiller
Pump group, adiabatic closed cooling tower are run；When cooling tower leaving water temperature 12<t<At 18 DEG C, into prefabricated refrigerating mode, thermal insulation is closed
The water outlet after cooling of formula cooling tower is introduced into water cooled chiller evaporator, and handpiece Water Chilling Units operation at part load is controlled for water temperature
Degree is 12 DEG C, therefore supply backwater temperature difference is less than 6 DEG C (18-12=6 DEG C), and handpiece Water Chilling Units load declines, and reduces compressor power consumption.This
Under pattern, internal and external circulating water series connection of pumps operation, water flow is consistent by Frequency Converter Control, water cooled chiller, inner-outer circulation pump
Group, adiabatic closed cooling tower are run；When adiabatic closed cooling tower leaving water temperature<It is 12 DEG C, cooling into cooling tower refrigerating mode
Water cooled chiller is closed under tower cooler pattern, and cooling load is all undertaken by adiabatic closed cooling tower, and power consumption is minimum.
Adiabatic each component water consumption power consumption calculating of closed cooling tower scheme refers to following table.
Adiabatic closed cooling tower scheme water consumption power consumption table
Open cooling system and adiabatic closed cooling system operating status comparison are as follows：
Running and comparing table
* remarks：The temperature difference of open cooling water system plate heat exchanger cold fluid and hot fluid is approached by 1 DEG C of calculating, open cooling tower
The degree of approximation of 2.5 DEG C of degree, adiabatic closed cooling tower is 2.5 DEG C.
Fig. 5 is shown in the water consumption power consumption data comparison of open cooling system and adiabatic closed cooling system.
It is found by calculating two schemes in detail, open cooling water system is changed since plate changes the water of both sides there are 1.5 DEG C
The hot temperature difference, either cooling tower refrigerating mode or pre- refrigeration mode, natural cold quantity utilization ratio is relatively lower, both of which
Run time is shorter than the complete cooling tower refrigerating mode of adiabatic closed cooling tower scheme and pre- refrigeration mode difference therefore adiabatic
The handpiece Water Chilling Units power consumption of closed cooling system is low；
If opening complete cooling tower refrigerating mode, open cooling water system needs while opening inner-outer circulation water pump, and
Adiabatic closed cooling tower only needs to open internal circulation water pump, and internal circulation water pump overcomes cooling tower and along the journey resistance of ducting under the pattern
Drop needs to overcome evaporator with summer handpiece Water Chilling Units refrigeration mode and along compared with the journey resistance of ducting drops, lift does not change much,
Therefore the water pump opening time is saved than opening the column plate scheme of changing, pump power is higher, and it is apparent to save the electricity charge；
The wind turbine and water pump general power of adiabatic closed cooling tower are higher than the general power of open cooling tower, more than COMPREHENSIVE CALCULATING
Component power consumption, adiabatic closed cooling system ratio open column plate and change system saving electricity 7.1%；
The cold in-water temperature limitation of the water cooled chiller used in view of data center (may less than 12.7 DEG C
Centrifugal water chillers are caused to be alarmed), according to open cooling water system, need unlatching outer circulation bypass that condenser water temperature is allowed to maintain
At 12.7 DEG C or more, water consumption consumes energy greatly again；And adiabatic closed cooling tower scheme is used, adiabatic humidiflcation mould is used in transition season
Formula or dry calibration pattern, can allow condenser inflow temperature to maintain 12.7 DEG C or more, if using variable frequency pump, it is water-saving and
Energy-saving effect is apparent；
Open cooling tower water consumption is big, and three parts, heat dissipation evaporation, drift ice and blowdown is mainly divided to open tower and spray fortune throughout the year
The water of row, heat dissipation evaporation consumption is big (1%~1.5%), and adiabatic closed cooling tower has the refrigerating modes such as spray, spraying, dry type, with
Customer charge and environment temperature transformation automatically switch, spray pattern water consumption rate is relatively low (0.5%), dry type without water consumption, therefore absolutely
The water of hot enclosed cooling evaporation is smaller than open cooling tower.Tower is opened since reasons in structure is without water collection device, water rate of floaing compares closed cooling tower
It is high.In addition open system and atmosphere contacting surface are big, and microorganism and algae are easy breeding, in order to slow down fouling, need in outer circulation
Design water treatment facilities needs blowdown just to can ensure that non-scaling after metal ion constantly concentration.According to multiple open systems and absolutely
Hot gathered data, the generally water consumption rate of open system are 1.5%, higher than adiabatic closed cooling system more, adiabatic enclosed
Cooling system ratio opens column plate and changes system water saving 27%.
Even if open system is using agent-feeding treatment, due to water degradation so that condenser is easy fouling, lead to its heat exchange temperature
Difference increases.Device is filtered according to automatic anti-cleaning is other, needs to increase additional electrical power and maintenance cost；And adiabatic enclosed cooling
The process water cycle of tower is closed system, and water quality is fully guaranteed, and the condenser of water cooled chiller is not easy fouling, therefore
Unit efficiency is influenced smaller；Simultaneously because water quality inferiority and serious dirt are to pipeline and equipment (including water cooled chiller, electricity
Movable valve, water pump etc.) there are different degrees of corrosion and damage, substantially reduce reliability and the service life of entire water cooling system.
Claims (5)
1. a kind of adiabatic closed cooling system for data center, including adiabatic enclosed wet cooling tower, water cooled chiller,
Inner-outer circulation pump group and data center air-conditioner end, the water cooled chiller include condenser and evaporator, it is characterised in that
The thermal insulation enclosed wet cooling tower, water cooled chiller, inner-outer circulation pump group and data center air-conditioner end are connected by valve
It connects, control system realizes following Three models switching by control valve；
Handpiece Water Chilling Units refrigerating mode, for water cooled chiller as low-temperature receiver, the evaporator by water cooled chiller is data center
Air conditioning terminal is cooled down, and cooling tower undertakes the load of water cooled chiller condenser；
Natural cooling pattern is cooled down using adiabatic closed cooling tower as low-temperature receiver for data center's air conditioning terminal；
Prefabricated refrigerating mode, by the way of adiabatic enclosed wet cooling tower and water cooled chiller series operation, adiabatic enclosed
After wet cooling tower water outlet is directly entered the further cooling of water cooled chiller evaporator, data center air-conditioner end is carried out cold
But.
2. a kind of adiabatic closed cooling system for data center as described in claim 1, it is characterised in that condenser
Output end is connect with the input terminal of adiabatic enclosed wet cooling tower, and the output end of adiabatic enclosed wet cooling tower is pumped by outer circulation
Group is connect with the input terminal of condenser, and evaporator output end is connected to data center's air conditioning terminal by internal circulation pump group and inputs
End, and it is back to evaporator input terminal, the outer circulation pump group and condenser input terminal from data center's air conditioning terminal output end
Between set gradually the second valve and third valve, the junction and condenser output end of second valve and third valve it
Between be arranged the 4th valve；The 6th valve and the 7th valve are set gradually between the evaporator input terminal and data center's air conditioning terminal
The 8th valve, the outer circulation pump group is arranged in door between the 6th valve and the 7th valve junction and evaporator output end
The junction of the 6th valve and the 7th valve, the second valve and third are also connected to by the first valve with the second valve junction
Valve junction is also connected to the 7th valve and data center air-conditioner end junction by the 5th valve, each valve and
Control system connects.
3. a kind of adiabatic closed cooling system for data center as claimed in claim 2, it is characterised in that the control
System is also connect with outer circulation pump group frequency converter and internal circulation pump group frequency converter, and the interior cycle variable frequency pump class frequency is naturally cold
But higher than under handpiece Water Chilling Units pattern under pattern, the interior cycle variable frequency pump class frequency is under pre- refrigeration mode than natural cooling mould
Higher under formula.
4. a kind of adiabatic closed cooling system for data center as claimed in claim 3, it is characterised in that the data
Center air-conditioner end input terminal setting supply water temperature sensor and pressure of supply water sensor, data center's air conditioning terminal output
It holds and return water temperature sensor and pressure of return water sensor is set, installation environment Temperature Humidity Sensor on adiabatic closed cooling tower, institute
State supply water temperature sensor, pressure of supply water sensor, return water temperature sensor, pressure of return water sensor, ambient temperature and humidity sensing
Device is connect with control system, and control system is sensed according to environment humidity sensor, supply water temperature sensor and return water temperature
Temperature value that device measures determines switch mode.
5. a kind of adiabatic closed cooling system for data center as claimed in claim 2, it is characterised in that the thermal insulation
Wind turbine is set at the top of enclosed wet cooling tower, adiabatic enclosed wet cooling tower top sets copper pipe aluminum fin heat exchanger, copper pipe aluminum fin
Heat exchanger sets inlet and outlet, and adiabatic enclosed wet cooling tower lower part sets adiabatic humidiflcation device, and bottom sets storage area, copper pipe
Spray head is equipped with above aluminum fin-stock heat exchanger, spray head is connected by spray pump with storage area, and storage area also passes through adiabatic humidiflcation
Booster pump, solenoid valve are connected to adiabatic humidiflcation device, and the thermal insulation enclosed wet cooling tower can be in following three kinds of operational modes
Switch, three kinds of operational modes are respectively adiabatic refrigerating mode, spraying cooling pattern and dry calibration pattern, are added by wind turbine and thermal insulation
Wet device realizes adiabatic refrigerating mode, and spraying cooling pattern is realized by spray pump, and dry calibration pattern is realized by wind turbine.
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| CN108105898A (en) * | 2017-12-26 | 2018-06-01 | 酷仑冷却技术（上海）有限公司 | A kind of adiabatic closed cooling system and its cooling means for data center |
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| CN112856723A (en) * | 2021-01-07 | 2021-05-28 | 丁一 | Cooling water pump control method and device, controller and refrigeration system |
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| CN112996363A (en) * | 2021-03-02 | 2021-06-18 | 贵州绿云科技有限公司 | Full-time natural cooling data center air conditioning system |
| CN115468436A (en) * | 2022-10-31 | 2022-12-13 | 南京贝特空调设备有限公司 | Atmospheric pressure constant pressure moisturizing cooling tower |
| CN118030575A (en) * | 2024-02-22 | 2024-05-14 | 丰冷环境科技(上海)有限公司 | Cooling water system of centrifugal air compressor |
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