CN110398013B - Wet film humidifying and cooling method, system and device and computer storage medium - Google Patents
Wet film humidifying and cooling method, system and device and computer storage medium Download PDFInfo
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- CN110398013B CN110398013B CN201910626715.0A CN201910626715A CN110398013B CN 110398013 B CN110398013 B CN 110398013B CN 201910626715 A CN201910626715 A CN 201910626715A CN 110398013 B CN110398013 B CN 110398013B
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- 238000001816 cooling Methods 0.000 title claims abstract description 37
- 238000005507 spraying Methods 0.000 claims abstract description 154
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 102
- 239000007921 spray Substances 0.000 claims description 144
- 238000004364 calculation method Methods 0.000 claims description 19
- 238000001704 evaporation Methods 0.000 claims description 19
- 230000008020 evaporation Effects 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 14
- 238000004590 computer program Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 2
- 230000005611 electricity Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 17
- 238000005265 energy consumption Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
- F24F6/04—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using stationary unheated wet elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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Abstract
The invention relates to a wet film humidifying and cooling method, a system, a device and a computer storage medium, which are used for acquiring parameters of an outdoor air inlet wet film and the temperature of the outdoor air outlet wet film, calculating to obtain actual spraying efficiency, judging the relation between the actual spraying efficiency and the optimal spraying efficiency in real time, and controlling the maintenance, reduction, increase or stop of spraying amount according to the judged relation. Compared with the prior art, the humidification device has the advantages that different spraying amounts are adopted for humidifying the wet film according to different parameters of the outdoor air humidity inlet film, so that the power consumption and the water consumption of the water pump are reduced, the humidification efficiency of the wet film is improved, and the purposes of water saving and electricity saving are achieved.
Description
Technical Field
The invention relates to the field of wet film humidification and cooling, in particular to a wet film humidification and cooling method, a wet film humidification and cooling system, a wet film humidification and cooling device and a computer storage medium for natural cooling.
Background
The increasingly strong energy conservation and emission reduction and green environmental protection requirements worldwide put forward higher requirements on the construction and operation of data centers with the largest energy consumption as the IT industry. The reduction of PUE values in data centers has become a primary appeal for owners and design builders.
For a traditional compressor refrigeration mode, the power consumption of the compressor is generally large, so that the energy consumption of the whole machine room air conditioner is very high, and the maintenance cost of the machine room is greatly increased. And the natural cold source is used for radiating heat for the machine room, so that the energy consumption of the machine room is reduced, and the whole PUE and CLF are lower.
Generally adopt evaporative cooling device (wet film humidification heat sink) through outdoor cold source (air) direct and water contact, utilize the heat of water absorption outdoor air, lead to the phase change of water, can better reduce the temperature of outdoor air, take away the heat of computer lab, do not have the influence to the environment moreover, water belongs to the environmental protection working medium, and the CLF of general computer lab can accomplish about 0.1.
Therefore, the efficient and energy-saving data center is a great inevitable trend for the development of the data center industry in the future, and it has become urgent to continuously and effectively reduce the operation cost of the data center. Therefore, the temperature of outdoor air is reduced more efficiently for direct evaporation cooling, and the heat of the machine room is taken away through a natural cold source, so that the whole energy consumption of the IT machine room system is very important.
The existing evaporative cooling device for reducing the indoor temperature of the machine room by adopting a natural cold source in the machine room generally adopts a humidifying film to spray and humidify and then exchange heat with outdoor air, so that the temperature of the outdoor air is reduced, and then the heat exchange with the indoor air of the machine room is carried out, so that cold quantity is provided for the indoor air of the machine room.
In the humidification and cooling process, on one hand, the same spraying amount is adopted for different parameters of the outdoor air humidity inlet film to humidify the humidity inlet film, the power consumption of a water pump is higher, the water consumption is higher, and the humidification efficiency is lower; on the other hand, due to the problems of uneven materials and the like caused by long-term use of the wet film, the water storage capacity of the wet film is different after humidification at different positions, so that the humidification efficiency is lower, a natural cold source cannot be fully utilized, and the PUE and the WUE of a machine room are reduced.
Disclosure of Invention
The invention provides a wet film humidifying and cooling method, a system and a device, which have the characteristics of reducing water consumption and improving wet film humidifying efficiency.
The invention also provides a wet film humidifying and cooling device which has the characteristic of being convenient for improving the wet film humidifying efficiency.
The invention also provides a computer storage medium which has the characteristic of being convenient for realizing the wet film cooling method.
The wet film humidifying and cooling method provided by the invention comprises the steps of collecting the parameters of outdoor air entering the wet film and the temperature T of the outdoor air exiting the wet film; the parameters of the outdoor air humidity inlet film comprise dry bulb temperature Tg and relative humidity, wet bulb temperature Ts is obtained according to the dry bulb temperature Tg and the relative humidity, and the wet bulb temperature Ts is obtained according to a formula
T=Tg- ŋ（Tg-Ts）
Calculating to obtain the actual spraying efficiency ŋ;
real-time judgment of the actual spray efficiency ŋ and the optimal spray efficiency ŋ0If the actual spray efficiency ŋ is at the optimum spray efficiency ŋ0Is wrongMaintaining the current spraying amount within the range of the difference threshold value; if the actual spray efficiency ŋ is less than the optimum spray efficiency ŋ0The lowest value of the error threshold value is used for controlling the spraying amount to be increased; if the actual spray efficiency ŋ is greater than the optimum spray efficiency ŋ0The highest value of the error threshold value, the control reduces the spraying amount or stops spraying.
According to the scheme of the invention, the parameters of the outdoor air entering the wet film are collected, and different spraying amounts are adopted for humidifying the wet film according to the parameters of the outdoor air entering the wet film, so that the outdoor air can be cooled to the maximum extent, sufficient cooling capacity is provided for the indoor air of a machine room, and meanwhile, the power consumption and water consumption of the water pump are reduced, the wet film humidifying efficiency is improved, and the purposes of water saving and electricity saving are achieved.
The method also comprises the steps of spraying and humidifying the wet film in different areas, and calculating to obtain the actual spraying efficiency ŋ of each area of the wet filmi(ii) a ŋ real-time judging actual spraying efficiency of each subarea area of wet film1、ŋ2、……、ŋnAnd optimum spray efficiency ŋ0Relationship between the actual spray efficiency ŋiAt the optimum spray efficiency of ŋ0Within the error threshold range, maintaining the current spraying amount of the corresponding area; if a certain actual spray efficiency ŋiLess than optimum spray efficiency ŋ0The lowest value of the error threshold value is used for controlling the spray amount of the corresponding area to be increased; if a certain actual spray efficiency ŋiGreater than optimum spray efficiency ŋ0The maximum value of the error threshold value is controlled to reduce the spraying amount of the corresponding area or stop the spraying of the corresponding area; wherein i and n are both natural numbers,
n is 2 or more corresponding to the number of each divisional area of the wet film.
Because the wet film uses the uneven scheduling problem of material that leads to for a long time, the water storage capacity is different after leading to the humidification of wet film different positions, through above-mentioned technical scheme, carries out subregion humidification control to wet film, can solve the water storage capacity difference after the humidification of wet film different positions to lead to the lower problem of humidification efficiency, and then can make full use of nature cold source, reduce the PUE and the WUE of computer lab.
The error threshold range is greater than 0.95 ŋ0Less than 1.05 ŋ0。
The wet film humidifying and cooling device comprises a water tank, a water pump, a wet film and a spray header, wherein the wet film and the spray header are arranged in an evaporation chamber;
the device also comprises a flow control valve, a first temperature and humidity sensor and a second temperature and humidity sensor; the flow control valve is arranged on a pipeline communicated with the spray header and is used for controlling the water yield of the spray header; the first temperature and humidity sensor is arranged outside the evaporation chamber and used for measuring the temperature and the relative humidity of outdoor air before the outdoor air enters the wet film; the second temperature and humidity sensor is arranged in the evaporation chamber, and is used for measuring the temperature and humidity of the outdoor air humidity outlet film at the outlet of the outdoor air humidity outlet chamber;
also comprises an actual spraying water amount control system, which comprises,
ŋ calculation module of spraying efficiency according to formula
T=Tg- ŋ（Tg-Ts）
Calculating to obtain the actual spraying efficiency ŋ; wherein T is the temperature of the outdoor air out of the wet film, Tg is the dry bulb temperature, and Ts is the wet bulb temperature;
a spray efficiency comparison and flow valve control module for judging the actual spray efficiency ŋ and the optimal spray efficiency ŋ0If the actual spray efficiency ŋ is at the optimum spray efficiency ŋ0Within the error threshold range, maintaining the current spraying amount; if the actual spray efficiency ŋ is less than the optimum spray efficiency ŋ0Controlling the flow control valve to increase the spraying amount if the error threshold value is the lowest value; if the actual spray efficiency ŋ is greater than the optimum spray efficiency ŋ0The control flow control valve is controlled to reduce the spraying amount or stop spraying when the error threshold value is the highest value.
The wet film partition is n partition areas, spray header groups are respectively and correspondingly arranged one by one, and the spray header groups are n in total, and each spray header group at least comprises one spray header; the second temperature and humidity sensor comprises n subarea areas which correspond to the wet film subareas one by one;
the water distributor is arranged on a water outlet pipeline of the water tank, n distribution pipelines are arranged at the water outlet end in a distribution manner, and the n distribution pipelines are in one-to-one correspondence with the n spray header groups; the flow control valves are arranged on the n shunt pipelines in a one-to-one correspondence manner; n is a natural number greater than or equal to 2;
and the spraying water quantity control system respectively calculates the actual spraying efficiency of each wet film subarea, compares each actual spraying efficiency with the optimal spraying efficiency, and then respectively controls the flow control valve corresponding to each wet film subarea according to the comparison control method of the control module.
Said n is equal to 3.
The wet film humidifying and cooling system provided by the invention comprises
A parameter acquisition module comprising
The outdoor air inlet wet film parameter acquisition unit comprises an acquisition unit for acquiring the dry bulb temperature Tg and the relative humidity of the outdoor air inlet wet film;
the outdoor air humidity outlet film parameter acquisition unit acquires the temperature T of the outdoor air humidity outlet film;
a computing module comprising, in combination,
the wet bulb temperature calculation unit is used for obtaining a wet bulb temperature Ts according to the dry bulb temperature Tg and the relative humidity;
the actual spraying efficiency calculating unit calculates actual spraying efficiency ŋ according to a formula T = Tg- ŋ (Tg-Ts);
a judgment control module for judging the actual spray efficiency ŋ and the optimal spray efficiency ŋ0If the actual spray efficiency ŋ is at the optimum spray efficiency ŋ0Within the error threshold range, maintaining the current spraying amount; if the actual spray efficiency ŋ is less than the optimum spray efficiency ŋ0The lowest value of the error threshold value is used for controlling the spraying amount to be increased; if the actual spray efficiency ŋ is greater than the optimum spray efficiency ŋ0The highest value of the error threshold value, the control reduces the spraying amount or stops spraying.
The outdoor air wet film outlet parameter acquisition unit comprises n acquisition subunits, and the acquisition subunits are used for acquiring wet films in a one-to-one correspondence mannerTemperature T of outdoor air moisture film of zone areai；
The actual spraying efficiency calculation unit comprises n calculation subunits, and the actual spraying efficiency ŋ of each subarea region of the wet film is calculated in a one-to-one correspondence manneri；
The judgment control module comprises n judgment control subunits, and the actual spraying efficiency ŋ of each subarea region is judged in a one-to-one correspondence manner1、ŋ2、……、ŋnAnd optimum spray efficiency ŋ0The relationship between the two and the control of the spraying amount;
wherein i and n are both natural numbers,
n is 2 or more corresponding to the number of each divisional area of the wet film.
The wet film humidifying and cooling device comprises a water tank, a water pump, a wet film and a spray header, wherein the wet film and the spray header are arranged in an evaporation chamber;
the device also comprises a flow control valve, a first temperature and humidity sensor and a second temperature and humidity sensor; the flow control valve is arranged on a pipeline communicated with the spray header and is used for controlling the water yield of the spray header; the first temperature and humidity sensor is arranged outside the evaporation chamber and used for measuring the temperature and the relative humidity of outdoor air before the outdoor air enters the wet film; the second temperature and humidity sensor is arranged in the evaporation chamber, and is used for measuring the temperature and humidity of the outdoor air humidity outlet film at the outlet of the outdoor air humidity outlet chamber;
the wet film partition is n partition areas, spray header groups are respectively and correspondingly arranged one by one, and the spray header groups are n in total, and each spray header group at least comprises one spray header; the second temperature and humidity sensor comprises n subarea areas which correspond to the wet film subareas one by one;
the water distributor is arranged on a water outlet pipeline of the water tank, n distribution pipelines are arranged at the water outlet end in a distribution manner, and the n distribution pipelines are in one-to-one correspondence with the n spray header groups; the flow control valves are arranged on the n shunt pipelines in a one-to-one correspondence manner; and n is a natural number greater than or equal to 2.
According to the present invention there is provided a computer storage medium storing a computer program capable of being loaded by a processor and performing any of the methods described above.
In summary, compared with the prior art, on one hand, the invention adopts different spraying amounts to humidify the wet film for different parameters of the outdoor air inlet wet film, thereby reducing the power consumption and water consumption of the water pump and improving the humidifying efficiency of the wet film; on the other hand, the humidification is carried out in different areas according to different positions of the wet film, so that the humidification efficiency is improved, the natural cold source can be fully utilized, and the PUE and the WUE of a machine room are reduced.
Drawings
FIG. 1 is a schematic structural diagram of a wet film humidifying and cooling device according to one embodiment of the present invention;
reference numerals: 1-water tank, 2-water pump, 3-preceding water pump ball valve, 4-back water pump ball valve, 5-check valve, 6-water shunt, 7-1 divide and flow the pipeline, 8-2 divide and flow the pipeline, 9-3 divide and flow the pipeline, 10-1 divide flow control valve, 11-2 divide flow control valve, 12-3 divide flow control valve, 14-first temperature and humidity sensor, 15-first shower head, 16-second shower head, 17-third shower head, 18-1 divide wet membrane, 19-1 divide the second temperature and humidity sensor, 20-2 divide wet membrane, 21-2 divide the second temperature and humidity sensor, 22-3 divide the wet membrane, 23-3 divide the second temperature and humidity sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Any feature disclosed in this specification (including any accompanying drawings) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
As an embodiment of the invention, the wet film humidifying and cooling method is provided, and comprises the steps of collecting the parameters of outdoor air entering the wet film and the temperature T of the outdoor air exiting the wet film; wherein, the parameters of the outdoor air humidity inlet film comprise dry bulb temperature Tg and relative humidity, wet bulb temperature Ts is obtained according to the dry bulb temperature Tg and the relative humidity, and the wet bulb temperature Ts is obtained according to a formula
T=Tg- ŋ（Tg-Ts）
Calculating to obtain the actual spraying efficiency ŋ;
real-time judgment of the actual spray efficiency ŋ and the optimal spray efficiency ŋ0If the actual spray efficiency ŋ is at the optimum spray efficiency ŋ0Within the error threshold range, maintaining the current spraying amount; if the actual spray efficiency ŋ is less than the optimum spray efficiency ŋ0The lowest value of the error threshold value is used for controlling the spraying amount to be increased; if the actual spray efficiency ŋ is greater than the optimum spray efficiency ŋ0The highest value of the error threshold value, the control reduces the spraying amount or stops spraying.
In the embodiment, the real-time actual spraying efficiency ŋ is obtained by real-time calculation according to the calculation parameters collected in real time. The calculation parameters comprise parameters before outdoor air enters the wet film, including dry bulb temperature Tg and wet bulb temperature Ts, and the wet bulb temperature Ts can not be directly acquired and needs to be obtained according to the dry bulb temperature Tg and relative humidity, so that the wet bulb temperature Ts is obtained according to the dry bulb temperature Tg and relative humidity, wherein the wet bulb temperature Ts obtained according to the dry bulb temperature Tg and relative humidity is used as a calculation method in the prior art and is not elaborated herein. The calculated parameters also included the temperature T of the outdoor air out of the wet film, and then the actual spray efficiency ŋ was calculated according to the formula T = Tg- ŋ (Tg-Ts).
For the determination process, in the present embodiment, the determination process is not limited, and it may be determined whether the actual spraying efficiency ŋ is the optimal spraying efficiency ŋ or not0If not, judging other conditions; or whether the actual spraying efficiency ŋ is less than the optimal spraying efficiency ŋ can be judged firstly0If not, judging other conditions; or whether the actual spraying efficiency ŋ is greater than the optimal spraying efficiency ŋ can be judged firstly0If not, judging other conditions; the subsequent judgment process is the same.
Among them, the best spray efficiency ŋ0It may be a set constant value or a value updated in real time, and in any case, it is a known value in the solution of the present invention, and how to obtain it is not within the scope of the discussion of the solution of the present invention.
In the embodiment, the same spraying amount is not adopted for the parameters of the different outdoor air humidity inlet membranes to humidify the humidity membranes, but the spraying amount is adjusted in real time according to the change of the actual spraying efficiency ŋ caused by the dry bulb temperature Tg and the wet bulb temperature Ts of the different outdoor air humidity inlet membranes, so that the power consumption and the water consumption of the water pump are reduced under the condition of the optimal spraying efficiency.
Through above specific embodiment, gather the parameter that outdoor air got into wet membrane, adopt the different volume of spraying to wet membrane humidification to the parameter that different outdoor air got into wet membrane, can carry out the maximum cooling to outdoor air, when providing sufficient cold volume for computer lab indoor air, reduce water pump consumption and water consumption to improve wet membrane humidification efficiency, reach the purpose of water conservation and economize on electricity.
Example 2
As a specific implementation scheme of the invention, on the basis of the embodiment 1, the method further comprises the steps of spraying and humidifying the wet film in the subareas, and calculating to obtain the actual spraying efficiency ŋ of each subarea of the wet filmi(ii) a ŋ real-time judging actual spraying efficiency of each subarea area of wet film1、ŋ2、……、ŋnAnd optimum spray efficiency ŋ0Relationship between the actual spray efficiency ŋiAt the optimum spray efficiency of ŋ0Within the error threshold range, maintaining the current spraying amount of the corresponding area; if a certain actual spray efficiency ŋiLess than optimum spray efficiency ŋ0The lowest value of the error threshold value is used for controlling the spray amount of the corresponding area to be increased; if a certain actual spray efficiency ŋiGreater than optimum spray efficiency ŋ0The highest value of the error threshold value of (2), the spraying amount of the corresponding area is controlled to be reducedOr stopping spraying of the corresponding area; wherein i and n are both natural numbers,
n is 2 or more corresponding to the number of each divisional area of the wet film.
Because the uneven scheduling problem of material that leads to of wet membrane long-term use leads to wet membrane different positions behind the humidification retaining capacity different to lead to humidification efficiency lower. In this embodiment, the wet film is humidified by spraying in different regions, and the actual spraying efficiency ŋ of each region is calculated and judgediAnd optimum spray efficiency ŋ0The relation between, and then the convenient volume that sprays to further the different positions of wet film is controlled to can control different volumes that spray to the different positions humidification back retaining capacity of wet film, improve humidification efficiency, make full use of nature cold source reduces the PUE and the WUE of computer lab.
Example 3
As a specific embodiment mode of the invention, on the basis of the specific embodiment 1 or 2, the error threshold range is more than 0.95 ŋ0Less than 1.05 ŋ0. The error range may be set to be greater than 0.95 ŋ0Less than 1.05 ŋ0Or other ranges, may be set according to actual needs.
Example 4
As a specific embodiment of the present invention, in the present specific embodiment, there is provided a wet film humidifying and cooling device, as shown in fig. 1, comprising a water tank 1, a water pump 2, a wet film and a shower head, wherein the wet film and the shower head are disposed in an evaporation chamber;
the device also comprises a flow control valve, a first temperature and humidity sensor 14 and a second temperature and humidity sensor; the flow control valve is arranged on a pipeline communicated with the spray header and is used for controlling the water yield of the spray header; the first temperature and humidity sensor 14 is arranged outside the evaporation chamber and used for measuring the temperature and the relative humidity of outdoor air before entering the wet film; the second temperature and humidity sensor is arranged in the evaporation chamber, and is used for measuring the temperature and humidity of the outdoor air humidity outlet film at the outlet of the outdoor air humidity outlet chamber;
also comprises an actual spraying water amount control system, which comprises,
ŋ calculation module of spraying efficiency according to formula
T=Tg- ŋ（Tg-Ts）
Calculating to obtain the actual spraying efficiency ŋ; wherein T is the temperature of the outdoor air out of the wet film, Tg is the dry bulb temperature, and Ts is the wet bulb temperature;
a spray efficiency comparison and flow valve control module for judging the actual spray efficiency ŋ and the optimal spray efficiency ŋ0If the actual spray efficiency ŋ is at the optimum spray efficiency ŋ0Within the error threshold range, maintaining the current spraying amount; if the actual spray efficiency ŋ is less than the optimum spray efficiency ŋ0Controlling the flow control valve to increase the spraying amount if the error threshold value is the lowest value; if the actual spray efficiency ŋ is greater than the optimum spray efficiency ŋ0The control flow control valve is controlled to reduce the spraying amount or stop spraying when the error threshold value is the highest value.
In the embodiment shown in fig. 1, the water pump further comprises a front water pump ball valve 3 in front of the water outlet direction of the water pump 2, a rear water pump ball valve 4 in the rear of the water outlet direction, and a check valve 5 arranged on the main water outlet pipeline and behind the rear water pump ball valve 4.
In the wet film humidifying and cooling device of the embodiment, the wet film is humidified by not adopting the same spraying amount for different parameters of the outdoor air inlet wet film, but the spraying amount is adjusted in real time according to the change of the actual spraying efficiency ŋ caused by the dry bulb temperature Tg and the wet bulb temperature Ts of different outdoor air inlet wet films, so that the power consumption and the water consumption of the water pump are reduced under the condition of the optimal spraying efficiency, and the purposes of saving water and electricity are achieved.
Example 5
As a specific implementation manner of the present invention, on the basis of example 4, the wet film is divided into n divisional areas, each of which has n shower head groups corresponding to each other, and each shower head group includes at least one shower head; the second temperature and humidity sensor comprises n subarea areas which correspond to the wet film subareas one by one;
the water distributor also comprises a water distributor 6 arranged on the water outlet pipeline of the water tank 1, wherein n distribution pipelines are arranged at the water outlet end in a distribution manner and correspond to n spray header groups one by one; the n shunt pipelines are provided with flow control valves in one-to-one correspondence; wherein n is a natural number greater than or equal to 2;
and the spraying water quantity control system respectively calculates the actual spraying efficiency of each wet film subarea, compares each actual spraying efficiency with the optimal spraying efficiency, and then respectively controls the flow control valve corresponding to each wet film subarea according to the comparison control method of the control module.
In the embodiment shown in fig. 1, each partition is provided with one shower head group, each shower head group at least comprises one shower head, in the embodiment shown in fig. 1, each shower head group is provided with two shower heads, and in specific implementation, the number of the shower heads included in each shower head group can be set according to the uniformity of spraying. As shown in fig. 1, the wet film 18 in the 1-zone corresponds to two first spray headers 15, the wet film 20 in the 2-zone corresponds to two second spray headers 16, and the wet film 22 in the 3-zone corresponds to a third spray header 17; the 1-region wet film 18 corresponds to a 1-region second temperature and humidity sensor 19, the 2-region wet film 20 corresponds to a 2-region second temperature and humidity sensor 21, and the 3-region wet film 22 corresponds to a 3-region second temperature and humidity sensor 23.
In the embodiment shown in fig. 1, the water diverter 6 is disposed behind the one-way valve in the water outlet direction, and the water outlet end is provided with 3 diversion pipes, namely, a 1-division diversion pipe 7 corresponding to the 1-division jet head set, a 2-division diversion pipe 8 corresponding to the 2-division jet head set, and a 3-division diversion pipe 9 corresponding to the 3-division jet head set. Wherein, the 1-zone flow control valve 10 is arranged on the 1-zone flow dividing pipeline 7, the 2-zone flow control valve 11 is arranged on the 2-zone flow dividing pipeline 8, and the 3-zone flow control valve 12 is arranged on the 3-zone flow dividing pipeline.
In this embodiment, carry out subregion and spray the humidification to the wet film, can control different volume that sprays to the retaining capacity difference after the different positions humidification of wet film, improve humidification efficiency, make full use of nature cold source reduces the PUE and the WUE of computer lab.
Example 6
As an implementation mode of the wet film humidifying and cooling system, the invention also provides the wet film humidifying and cooling system which comprises a parameter acquisition module, a calculation module and a judgment control module; wherein,
the parameter acquisition module comprises
The outdoor air inlet wet film parameter acquisition unit comprises an acquisition unit for acquiring the dry bulb temperature Tg and the relative humidity of the outdoor air inlet wet film; and,
the outdoor air humidity outlet film parameter acquisition unit acquires the temperature T of the outdoor air humidity outlet film;
the calculation module comprises a calculation module and a display module,
the wet bulb temperature calculation unit is used for obtaining a wet bulb temperature Ts according to the dry bulb temperature Tg and the relative humidity; and,
the actual spraying efficiency calculating unit calculates actual spraying efficiency ŋ according to a formula T = Tg- ŋ (Tg-Ts);
the judgment control module is used for judging the actual spraying efficiency ŋ and the optimal spraying efficiency ŋ0If the actual spray efficiency ŋ is at the optimum spray efficiency ŋ0Within the error threshold range, maintaining the current spraying amount; if the actual spray efficiency ŋ is less than the optimum spray efficiency ŋ0The lowest value of the error threshold value is used for controlling the spraying amount to be increased; if the actual spray efficiency ŋ is greater than the optimum spray efficiency ŋ0The highest value of the error threshold value, the control reduces the spraying amount or stops spraying.
Through the system of the embodiment, the corresponding wet film humidifying and cooling method is completed, the outdoor air can be cooled to the maximum degree, sufficient cooling capacity is provided for the indoor air of the machine room, the power consumption and the water consumption of the water pump are reduced, the wet film humidifying efficiency is improved, and the purposes of water saving and electricity saving are achieved.
Example 7
As a specific implementation manner of the scheme of the invention, on the basis of the embodiment 6, the outdoor air humidity outlet membrane parameter collecting unit comprises n collecting subunits, and the n collecting subunits are used for correspondingly collecting the temperature T of the outdoor air humidity outlet membrane in each partition area of the humidity membrane one by onei；
The actual spraying efficiency calculation unit comprises n calculation subunits, and the actual spraying efficiency ŋ of each subarea region of the wet film is calculated in a one-to-one correspondence manneri；
The judgment control module comprises n judgment control subunits, and the actual spraying efficiency ŋ of each subarea region is judged in a one-to-one correspondence manner1、ŋ2、……、ŋnAnd optimum spray efficiency ŋ0The relationship between the two and the control of the spraying amount;
wherein i and n are both natural numbers,
n is 2 or more corresponding to the number of each divisional area of the wet film.
As an embodiment, n =3, 3 collecting subunits correspondingly collect the temperature T of the outdoor air of 3 subareas of the wet film out of the wet film one by one1、T2And T3(ii) a 3 calculation units calculate the actual spray efficiency ŋ of 3 subareas of the wet film in a one-to-one correspondence manner1、ŋ2And ŋ3And 3 judgment control subunits are used for judging the actual spraying efficiency ŋ of 3 partitions in one-to-one correspondence manner1、ŋ2And ŋ3And ŋ0And controlling the spraying amount.
In this embodiment, can control different quantities that spray to the retaining capacity difference after the different positions humidification of wet film, improve humidification efficiency, make full use of nature cold source reduces the PUE and the WUE of computer lab.
Example 8
As an embodiment of the invention, the wet film humidifying and cooling device shown in figure 1 comprises a water tank 1, a water pump 2, a wet film and a spray header, wherein the wet film and the spray header are arranged in an evaporation chamber;
the device also comprises a flow control valve, a first temperature and humidity sensor 14 and a second temperature and humidity sensor; the flow control valve is arranged on a pipeline communicated with the spray header and is used for controlling the water yield of the spray header; the first temperature and humidity sensor 14 is arranged outside the evaporation chamber and used for measuring the temperature and the relative humidity of outdoor air before entering the wet film; the second temperature and humidity sensor is arranged in the evaporation chamber, and is used for measuring the temperature and humidity of the outdoor air humidity outlet film at the outlet of the outdoor air humidity outlet chamber;
the wet film is divided into n subarea areas, spray header groups are respectively and correspondingly arranged one by one, and the spray header groups are n in total, and each spray header group at least comprises one spray header; the second temperature and humidity sensor comprises n subarea areas which correspond to the wet film subareas one by one;
the water distributor is arranged on a water outlet pipeline of the water tank, n distribution pipelines are arranged at the water outlet end in a distribution manner, and the n distribution pipelines are in one-to-one correspondence with the n spray header groups; the flow control valves are arranged on the n shunt pipelines in a one-to-one correspondence manner; and n is a natural number greater than or equal to 2.
Through above-mentioned wet film humidification cooling device, be convenient for carry out subregion spray humidification to the wet film, control the volume that sprays of the different positions of wet film to can be different to retaining capacity behind the different positions humidification of wet film, the volume that sprays of control difference improves humidification efficiency, and make full use of nature cold source reduces the PUE and the WUE of computer lab. The problem of because wet membrane uses the material inequality that leads to for a long time, lead to wet membrane different positions behind the humidification retaining capacity different to lead to the lower problem of humidification efficiency is solved.
Example 9
As shown in fig. 1, on the basis of embodiment 8, n =3, the wet film partitions are the 1-partition wet film 18, the 2-partition wet film 20, and the 3-partition wet film 22, each partition has one shower head group in one-to-one correspondence, each shower head group includes at least one shower head, in the embodiment shown in fig. 1, each shower head group has two shower heads, and in a specific implementation, the number of shower heads included in each shower head group may be set according to the uniformity of spraying. As shown in fig. 1, the wet film 18 in the 1-zone corresponds to two first spray headers 15, the wet film 20 in the 2-zone corresponds to two second spray headers 16, and the wet film 22 in the 3-zone corresponds to a third spray header 17; the 1-region wet film 18 corresponds to a 1-region second temperature and humidity sensor 19, the 2-region wet film 20 corresponds to a 2-region second temperature and humidity sensor 21, and the 3-region wet film 22 corresponds to a 3-region second temperature and humidity sensor 23.
In the embodiment shown in fig. 1, the water diverter 6 is disposed behind the one-way valve in the water outlet direction, and the water outlet end is provided with 3 diversion pipes, namely, a 1-division diversion pipe 7 corresponding to the 1-division jet head set, a 2-division diversion pipe 8 corresponding to the 2-division jet head set, and a 3-division diversion pipe 9 corresponding to the 3-division jet head set. Wherein, the 1-zone flow control valve 10 is arranged on the 1-zone flow dividing pipeline 7, the 2-zone flow control valve 11 is arranged on the 2-zone flow dividing pipeline 8, and the 3-zone flow control valve 12 is arranged on the 3-zone flow dividing pipeline.
As shown in figure 1, the whole figure has 1 set of water system, spray water is humidified by a wet film and then returns to a water tank after exchanging heat with outdoor air, and the spray water is recycled. After the partition, the spraying system of the device has 7 operation modes: namely, the 1 region, the 2 region and the 3 region can be independently operated; the area 1, the area 2 and the area 3 can be combined and operated simultaneously; zone 1, zone 2 and zone 3 may also be operated in combination. In fig. 1, the water splitter 6 can be divided into a 1-division flow pipeline, a 2-division flow pipeline and a 3-division flow pipeline at the same time, can be divided into a 1-division flow pipeline, a 2-division flow pipeline and a 3-division flow pipeline separately, and can be divided into a 1-division flow pipeline, a 2-division flow pipeline and a 3-division flow pipeline arbitrarily; the flow control valves 10 in the area 1, the flow control valves 11 in the area 2 and the flow control valves in the area 3 can control different opening degrees to supply water for the flow dividing pipelines in the area 1, the flow dividing pipelines in the area 2 and the flow dividing pipelines in the area 3.
Example 10
As an embodiment of the present invention, in this embodiment, a computer storage medium is provided, which stores a computer program that can be loaded by a processor and executes any one of the methods in embodiments 1 to 3, so as to implement the method.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. The wet film humidifying and cooling method comprises the steps of collecting parameters of outdoor air entering a wet film and the temperature T of the outdoor air exiting the wet film; the parameters of the outdoor air humidity inlet film comprise dry bulb temperature Tg and relative humidity, wet bulb temperature Ts is obtained according to the dry bulb temperature Tg and the relative humidity, and the wet bulb temperature Ts is obtained according to a formula
T＝Tg-η(Tg-Ts)
Calculating to obtain actual spraying efficiency eta;
real-time judgment of actual spraying efficiency eta and optimal spraying efficiency eta0The relationship between the two, if the actual spraying efficiency eta is at the optimum spraying efficiency eta0Within the error threshold range, maintaining the current spraying amount; if the actual spraying efficiency eta is less than the optimal spraying efficiency eta0The lowest value of the error threshold value is used for controlling the spraying amount to be increased; if the actual spraying efficiency eta is larger than the optimal spraying efficiency eta0The maximum value of the error threshold value is controlled to reduce the spraying amount or stop spraying;
the method also comprises the steps of spraying and humidifying the wet film in different regions, and calculating to obtain the actual spraying efficiency eta of each region of the wet filmi(ii) a Real-time judgment of actual spraying efficiency eta of each subarea area of wet film1、η2、……、ηnAnd the optimum spraying efficiency eta0The relationship between them, if a certain actual spraying efficiency etaiAt the optimum spraying efficiency eta0Within the error threshold range, maintaining the current spraying amount of the corresponding area; if a certain actual spraying efficiency etaiLess than optimum spray efficiency η0The lowest value of the error threshold value is used for controlling the spray amount of the corresponding area to be increased; if a certain actual spraying efficiency etaiGreater than optimum spray efficiency eta0The maximum value of the error threshold value is controlled to reduce the spraying amount of the corresponding area or stop the spraying of the corresponding area; wherein i and n are both natural numbers, i belongs to {1, 2, …, n }, and corresponds to the number of each subarea region of the wet film, and n is more than or equal to 2.
2. The wet film humidifying and cooling method as claimed in claim 1, wherein said error threshold range is greater than 0.95 η0Less than 1.05 eta0。
3. The wet film humidifying and cooling device comprises a water tank (1), a water pump (2), a wet film and a spray header, wherein the wet film and the spray header are arranged in an evaporation chamber; it is characterized in that the preparation method is characterized in that,
the device also comprises a flow control valve, a first temperature and humidity sensor (14) and a second temperature and humidity sensor; the flow control valve is arranged on a pipeline communicated with the spray header and is used for controlling the water yield of the spray header; the first temperature and humidity sensor (14) is arranged outside the evaporation chamber and used for measuring the temperature and the relative humidity of outdoor air before entering the wet film; the second temperature and humidity sensor is arranged in the evaporation chamber, and is used for measuring the temperature and humidity of the outdoor air humidity outlet film at the outlet of the outdoor air humidity outlet chamber;
also comprises an actual spraying water amount control system, which comprises,
a spray efficiency eta calculation module according to a formula
T＝Tg-η(Tg-Ts)
Calculating to obtain actual spraying efficiency eta; wherein T is the temperature of the outdoor air out of the wet film, Tg is the dry bulb temperature, and Ts is the wet bulb temperature;
a spray efficiency comparison and flow valve control module for judging the actual spray efficiency eta and the optimal spray efficiency eta0The relationship between the two, if the actual spraying efficiency eta is at the optimum spraying efficiency eta0Within the error threshold range, maintaining the current spraying amount; if the actual spraying efficiency eta is less than the optimal spraying efficiency eta0Controlling the flow control valve to increase the spraying amount if the error threshold value is the lowest value; if the actual spraying efficiency eta is larger than the optimal spraying efficiency eta0Controlling the flow control valve to reduce the spraying amount or stop spraying when the error threshold value is the highest value;
the wet film is divided into n subarea areas, spray header groups are respectively and correspondingly arranged one by one, and the spray header groups are n in total, and each spray header group at least comprises one spray header; the second temperature and humidity sensor comprises n subarea areas which correspond to the wet film subareas one by one;
the water distributor is arranged on a water outlet pipeline of the water tank, n distribution pipelines are arranged at the water outlet end in a distribution manner, and the n distribution pipelines are in one-to-one correspondence with the n spray header groups; the flow control valves are arranged on the n shunt pipelines in a one-to-one correspondence manner; n is a natural number greater than or equal to 2;
and the spraying water quantity control system respectively calculates the actual spraying efficiency of each wet film subarea, compares each actual spraying efficiency with the optimal spraying efficiency, and then respectively controls the flow control valve corresponding to each wet film subarea according to the comparison control method of the control module.
4. The wet film humidifying cooling device of claim 3, wherein n is equal to 3.
5. The wet film humidifying and cooling system is characterized by comprising
A parameter acquisition module comprising
The outdoor air inlet wet film parameter acquisition unit comprises an acquisition unit for acquiring the dry bulb temperature Tg and the relative humidity of the outdoor air inlet wet film;
the outdoor air humidity outlet film parameter acquisition unit acquires the temperature T of the outdoor air humidity outlet film;
a computing module comprising, in combination,
the wet bulb temperature calculation unit is used for obtaining a wet bulb temperature Ts according to the dry bulb temperature Tg and the relative humidity;
the actual spraying efficiency calculation unit calculates actual spraying efficiency eta according to a formula T & ltTg-eta (Tg-Ts);
a judgment control module for judging the actual spray efficiency eta and the optimal spray efficiency eta0The relationship between the two, if the actual spraying efficiency eta is at the optimum spraying efficiency eta0Within the error threshold range, maintaining the current spraying amount; if the actual spraying efficiency eta is less than the optimal spraying efficiency eta0The lowest value of the error threshold value is used for controlling the spraying amount to be increased; if the actual spraying efficiency eta is larger than the optimal spraying efficiency eta0The maximum value of the error threshold value is controlled to reduce the spraying amount or stop spraying;
the outdoor air humidity outlet film parameter acquisition unit comprises n acquisition subunits, and is used for acquiring the temperature T of the outdoor air humidity outlet film of each partition area of the humidity film in a one-to-one correspondence manneri；
The actual spraying efficiency calculating unit comprises n calculating subunits, and the actual spraying efficiency eta of each subarea area of the wet film is calculated in a one-to-one correspondence manneri；
The judgment control module comprisesn judgment control subunits for one-to-one judging the actual spraying efficiency eta of each subarea1、η2、……、ηnAnd the optimum spraying efficiency eta0The relationship between the two and the control of the spraying amount;
wherein i and n are both natural numbers, i belongs to {1, 2, …, n }, and corresponds to the number of each subarea region of the wet film, and n is more than or equal to 2.
6. The wet film humidifying and cooling device comprises a water tank (1), a water pump (2), a wet film and a spray header, wherein the wet film and the spray header are arranged in an evaporation chamber; it is characterized in that the preparation method is characterized in that,
the device also comprises a flow control valve, a first temperature and humidity sensor (14) and a second temperature and humidity sensor; the flow control valve is arranged on a pipeline communicated with the spray header and is used for controlling the water yield of the spray header; the first temperature and humidity sensor (14) is arranged outside the evaporation chamber and used for measuring the temperature and the relative humidity of outdoor air before entering the wet film; the second temperature and humidity sensor is arranged in the evaporation chamber, and is used for measuring the temperature and humidity of the outdoor air humidity outlet film at the outlet of the outdoor air humidity outlet chamber;
the wet film is divided into n subarea areas, spray header groups are respectively and correspondingly arranged one by one, and the spray header groups are n in total, and each spray header group at least comprises one spray header; the second temperature and humidity sensor comprises n subarea areas which correspond to the wet film subareas one by one;
the water distributor is arranged on a water outlet pipeline of the water tank, n distribution pipelines are arranged at the water outlet end in a distribution manner, and the n distribution pipelines are in one-to-one correspondence with the n spray header groups; the flow control valves are arranged on the n shunt pipelines in a one-to-one correspondence manner; and n is a natural number greater than or equal to 2.
7. Computer storage medium, characterized in that a computer program is stored which can be loaded by a processor and which executes the method of any of claims 1 to 2.
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| US7131639B2 (en) * | 2003-06-05 | 2006-11-07 | Kammerzell Donald L | Water distribution system for an evaporative cooler |
| JP2012211825A (en) * | 2011-03-31 | 2012-11-01 | Suga Test Instr Co Ltd | Absolute humidity-based temperature and humidity adjusting control system and testing apparatus using the same |
| CN104864738A (en) * | 2015-06-04 | 2015-08-26 | 广州览讯科技开发有限公司 | Subarea water-distribution water-saving and fog-eliminating counter flow cooling tower |
| CN107101523B (en) * | 2017-04-19 | 2023-02-17 | 华电电力科学研究院有限公司 | Non-uniform partitioned water distribution system and wet cooling tower provided with same |
| CN109475068B (en) * | 2018-01-15 | 2023-08-29 | 香江科技股份有限公司 | Multi-cold-source modularized partition cooling energy-saving system of data center and control method |
| CN109827268B (en) * | 2019-01-25 | 2021-01-05 | 深圳市艾特网能技术有限公司 | Spraying control method and device for indirect evaporation cold source pump |
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