CN107676899A - Evaporative cooling equipment and its enter wind process method - Google Patents
Evaporative cooling equipment and its enter wind process method Download PDFInfo
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- CN107676899A CN107676899A CN201710943396.7A CN201710943396A CN107676899A CN 107676899 A CN107676899 A CN 107676899A CN 201710943396 A CN201710943396 A CN 201710943396A CN 107676899 A CN107676899 A CN 107676899A
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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
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
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Abstract
The embodiment of the present invention proposes a kind of evaporative cooling equipment and its enters wind process method, is related to evaporation cooling technique field.This, which enters wind process method, includes：Air is preheated, obtains preheated air.The preheated air is passed through cooling device.Present invention reduces the relative humidity of air, improve the wettability power of air, strengthen the cooling effect of evaporative cooling equipment, improve adaptability of the evaporative cooling equipment to different atmospheric conditions, evaporative cooling equipment is reduced with efficiency fluctuation amplitude caused by changes in atmospheric, evaporative cooling equipment is not limited by environmental working condition, the energy is saved, beneficial to environmental protection.
Description
Technical field
The present invention relates to evaporation cooling technique field, is handled in particular to a kind of evaporative cooling equipment and its air intake
Method.
Background technology
Evaporative cooling equipment in commercial Application at present, its air inlet mode are directly to suck the air in atmospheric environment
Evaporative cooling equipment, for use as the hot and humid area of cooling water in equipment.The efficiency of the evaporative cooling equipment of this air inlet mode is very
The relative status condition of air when equipment is run is depended in big degree.
Due to different areas, atmospheric condition condition is not quite similar.For Arid Area, the relative humidity of air intake air compared with
Low, the efficiency of evaporative cooling equipment is higher；For humid area, the relative humidity of air intake air is higher, evaporative cooling equipment
Efficiency is relatively low.Even in areal, because the humiture state of each period air is also to have very big difference, steam
The operating efficiency of hair cooling device is also change.
When air intake relative air humidity reaches more than 85%, the efficiency of conventional evaporative cooling equipment be only 60% less than
(relative standard's operating mode：31.5 DEG C of air intake dry-bulb temperature, 28 DEG C of wet-bulb temperature).And because the uncertain of atmospheric conditions (contains season
The difference of difference, daily different time points), operating condition deviation is very big, and conventional evaporative cooling equipment is in engineering design or equipment
Buying type selecting can all leave larger safe clearance, increase equipment investment.
The content of the invention
It is an object of the invention to provide one kind to enter wind process method, which reduces the relative humidity of air, improves sky
The wettability power of gas, the cooling effect of cooling device is strengthened, improve adaptability of the cooling device to different atmospheric conditions, dropped
Low cooling device makes cooling device not limited by environmental working condition, saved with efficiency fluctuation amplitude caused by changes in atmospheric
The energy, beneficial to environmental protection.
Another object of the present invention is to provide a kind of evaporative cooling equipment, the relative humidity of air is which reduced, is improved
The wettability power of air, the cooling effect of evaporative cooling equipment is strengthened, improve evaporative cooling equipment to different big gas bars
The adaptability of part, evaporative cooling equipment is reduced with efficiency fluctuation amplitude caused by changes in atmospheric, makes evaporative cooling equipment
Operating efficiency is not limited by environmental working condition, the energy is saved, beneficial to environmental protection.
To achieve these goals, the technical scheme that the embodiment of the present invention uses is as follows：
The embodiments of the invention provide one kind to enter wind process method, applied to cooling device, it is described enter wind process method bag
Include：Air is preheated, obtains preheated air.The preheated air is passed through the cooling device.
Further, it is described that air is preheated, obtain preheated air the step of include：Using preheating device to described
Air is heated, and obtains the preheated air, wherein, the preheating device is engaged with the cooling device.
Further, the cooling device is provided with air inlet and exhaust outlet, and the preheating device is arranged at the air intake
Mouthful.
Further, it is described enter wind process method also include：The state of the air is detected to obtain air status parameter
And selectively turn on or close the preheating device.
Further, the temperature of the air is the first temperature, and first temperature is compared with preset temperature, works as institute
State the first temperature and be less than the preset temperature, open the preheating device.When first temperature is more than or equal to described preset
Temperature, close the preheating device.
Further, the relative humidity of the air is the first relative humidity, by first relative humidity and default phase
Humidity is compared, when first relative humidity is more than the default relative humidity, opens the preheating device.When described
One relative humidity is less than or equal to the default relative humidity, closes the preheating device.
The embodiment of the present invention also provides a kind of evaporative cooling equipment, and the evaporative cooling equipment includes cooling device and preheating
Device, the cooling device are engaged with the preheating device.The preheating device is pre- to obtain for being preheated to air
Hot-air.The preheated air is passed through the cooling device.
Further, the cooling device is provided with air inlet and exhaust outlet, and the preheating device is arranged at the air intake
Mouthful.
Further, the evaporative cooling equipment also includes detection means, the detection means and the preheating device
It is electrically connected with, the detection means is used to detect the state of the air of the air inlet and is selectively turned on or closed
The preheating device.
Further, the detection means includes：The air inlet is arranged at, for the air condition to the air inlet
Detected and obtain the detection components of corresponding air status parameter.It is electrically connected with the detection components and for described
Air status parameter is handled to obtain the control assembly of corresponding air relative status parameter.And with the control assembly
It is electrically connected with and is electrically connected with the preheating device, for selectively turns on or closing according to the air relative status parameter
Close the reaction component of the preheating device.
Relative to prior art, the embodiment of the present invention has the advantages that：
A kind of evaporative cooling equipment provided in an embodiment of the present invention and its enter wind process method, it is by the way that air intake air is entered
Row preheating, to reduce the relative humidity of air, improves the wettability power of air, strengthens the cooling effect of evaporative cooling equipment,
Adaptability of the evaporative cooling equipment to different atmospheric conditions is improved, reduce evaporative cooling equipment causes with changes in atmospheric
Efficiency fluctuation amplitude, evaporative cooling equipment operating efficiency is not limited by environmental working condition, save the energy, beneficial to environmental protection.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below by embodiment it is required use it is attached
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore be not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 shows a kind of structured flowchart for the evaporative cooling equipment that first embodiment of the invention is provided；
Fig. 2 shows another structured flowchart for the evaporative cooling equipment that first embodiment of the invention is provided；
Fig. 3 shows a kind of structural frames of the detection means for the evaporative cooling equipment that first embodiment of the invention is provided
Figure；
Fig. 4 is a kind of structured flowchart of the control assembly 220 shown in Fig. 3；
Fig. 5 shows the flow chart for entering wind process method that second embodiment of the invention is provided；
Fig. 6 shows another flow chart for entering wind process method that second embodiment of the invention is provided
Fig. 7 is the flow chart of the sub-step of the step S110 shown in Fig. 6.
In figure：10- evaporative cooling equipments；100- preheating devices；200- detection means；210- detection components；220- is controlled
Component；221- memories；222- processors；223- controllers；230- reaction components；300- cooling devices.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.Meanwhile the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that instruction or hint relative importance.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those
Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Other identical element also be present in process, method, article or equipment including the key element.
In the description of the invention, it is necessary to explanation, the orientation or position of the instruction such as term " on ", " under ", " interior ", " outer "
Put relation be based on orientation shown in the drawings or position relationship, or the invention product using when the orientation or position usually put
Relation is put, it is of the invention necessary with simplified description, rather than the device or element of instruction or hint meaning to be for only for ease of description
With specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be two
The connection of element internal.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in the present invention
In concrete meaning.
Below in conjunction with the accompanying drawings, some embodiments of the present invention are elaborated.It is following in the case where not conflicting
Feature in embodiment and embodiment can be mutually combined.
First embodiment：
A kind of referring to Fig. 1, structured flowchart for the evaporative cooling equipment 10 that Fig. 1 is provided by first embodiment of the invention.
The evaporative cooling equipment 10 that the present embodiment is provided, including cooling device 300 and preheating device 100.
In the present embodiment, the cooling device 300 can be used for cooling down destination object, to realize user to the target
The purpose that object cools down.In the present embodiment, the destination object can be but not limited to high temperature refrigerant,
Water source medium of high temperature etc..The cooling device 300 is provided with air inlet and exhaust outlet, is provided with the cooling device 300
Air channel, because vaporation-type cooling device is that hot and humid area occurs by the air in equipment and water source medium, the water for taking away high temperature steams
Gas, heat is taken away, so as to reach the purpose of cooling, the air channel forms the air connected with the air inlet and the exhaust outlet
Passage, for the ventilation and heat in the cooling device 300.
In the present embodiment, the preheating device 100 can be used for carrying out in advance the air for entering the cooling device 300
Heat, to obtain preheated air, and then the preheated air is passed through in the cooling device 300 and is aerated radiating.After preheating
Air, temperature can raise, and water capacity is unchanged, and relative humidity is minimized, and then the preheated air is in the evaporation cooling
When carrying out that hot and humid area occurs with water source medium in equipment 10, the preheated air of unit air volume can be than the sky that does not preheat
The more vapor of aspiration, and then more heats are taken away, cooling efficiency is improved, while air quantity is saved, reduce energy consumption.
Preferably as a kind of embodiment, the preheating device 100 can be arranged at the air inlet, lead in air
Before entering the cooling device 300, air is preheated and obtains preheated air, fully ensure that the preheated air into institute
Cooling device 300 is stated with before water source medium generation hot and humid area, being fully warmed-up, to obtain the lower preheated air of relative humidity,
Ensure the cooling effectiveness of the cooling device 300.Certainly, in some other embodiments, the preheating device 100 may be used also
To be arranged in the cooling device 300, even outside the cooling device 300, both are mutually gone here and there by connecting pipe
Connection, if meet air with the evaporative cooling equipment 10 in water source medium hot and humid area occurs before, be fully warmed-up and obtain
Obtain preheated air.
Preferably as a kind of embodiment, the preheating device 100 can include heat exchanger.Heat exchanger is that one kind will
The equipment that the partial heat of hot fluid passes to cold fluid, and the evaporative cooling equipment 10 that the present embodiment is provided, it cools down drop
The destination object of temperature, which can include hot fluid, the heat exchangers such as the water source medium of the refrigerant of high temperature, high temperature, can utilize institute
The heat transfer of destination object itself is stated to air, to preheated air to obtain preheated air.In particular, when the steaming
When the destination object to cool for sending out cooling device 10 is refrigerant, the heat exchanger is using refrigerant as high temperature heat source, with institute
The air for stating air inlet carries out heat exchange to obtain preheated air；When the target pair to cool of the evaporative cooling equipment 10
As for water source medium when, the heat exchanger using water source medium as high temperature heat source, with the air of the air inlet carry out heat exchange with
Obtain preheated air.The destination object is carrying out heat exchange and then drop by the heat exchanger with the air of the air inlet
Preheated air and preheated air is obtained while low own temperature, there is the preheated air lower than air relatively wet
Degree, lifts the wettability power of the preheated air, lifts the heat exchange efficiency of the evaporative cooling equipment 10, and lifts cooling effect
Rate.
Preferably as an embodiment, the preheating device 100 can also be electrical heating ring, wherein, the electricity adds
Hot ring includes tubular structure, and heat can be produced after energization.The electrical heating ring is arranged at the air inlet, and air is into institute
Stating must be by the electrothermal ring, when the cooling device 300 is being passed through air progress before cooling device 300 carries out hot and humid area
When ventilating and cooling works, the electrical heating ring is powered work simultaneously, heats the air for being passed through the cooling device 300 in real time.
What deserves to be explained is in some other embodiments, the preheating device 100 can also be electric heater,
The firing equipment such as electric jacket and blowtorch, as long as meeting that with the water source medium in the evaporative cooling equipment 10 heat is occurring for air
Before wet exchange, it is fully warmed-up and obtains preheated air.
Based on above-mentioned design, evaporative cooling equipment 10 that the present embodiment is provided, cooled down being passed through air with the evaporation
Before water source medium in equipment 10 carries out hot and humid area, the air is preheated to obtain preheated air, the preheating sky
Gas has the relative humidity lower than the air in air, stronger wettability power, and the preheated air of same air quantity is compared
Air in air, more vapor can be absorbed when carrying out hot and humid area, more heats are taken away, so as to improve
The operating efficiency of evaporative cooling equipment 10 is stated, saves air quantity, reduces energy consumption.
Referring to Fig. 2, another structural frames for the evaporative cooling equipment 10 that Fig. 2 is provided by first embodiment of the invention
Figure.In the present embodiment, the evaporative cooling equipment 10 can also include detection means 200, and the detection means 200 is arranged at
The air inlet, the detection means 200 are electrically connected with the preheating device 100.
Inventor has found that the different periods in areal, the relative humidity amplitude fluctuation of air is also great.One
A little periods, the relative humidity of air it is higher, it is necessary to be preheated by the preheating device 100 after, reduce relative humidity, then
The cooling device 300 is passed through, the operating efficiency of the evaporative cooling equipment 10 can be lifted；But in some other periods,
The relative humidity of air is relatively low, can be directly used for the cooling device 300 and carries out hot and humid area, if now being preheated again, institute
State the cooling effect of cooling device 300 can't be lifted how much, on the contrary can because using the preheating device 100 and increase described in
The energy consumption of evaporative cooling equipment 10, loses more than gain.
Based on above-mentioned analysis, it has been recognised by the inventors that being preheated air to obtain preheated air in the preheating device 100
Before, the detection means 200 can be used for detecting the air condition of the air inlet and be selected according to the result of detection
Property is turned on and off the preheating device 100.
Specifically, when the state for the air that the detection means 200 detects reaches the cooling device 300
It is required that when, the detection means 200 closes the preheating device 100, reduces energy consumption；Detected when the detection means 200
When the state of the air is not up to the requirement of the cooling device 300, the detection means 200 opens the preheating device
100, to heat the air, reduce the state of the air with fluctuating range caused by changes in atmospheric, keep the evaporation
The operating efficiency of cooling device 10.
Referring to Fig. 3, the detection means 200 for the evaporative cooling equipment 10 that Fig. 3 is provided by first embodiment of the invention
A kind of structured flowchart.In the present embodiment, the detection means 200 includes detection components 210, control assembly 220 and reaction component
230。
In the present embodiment, the detection components 210 are arranged at the air inlet, can be used for the air condition to preheating
Detected and obtain corresponding air status parameter, and the air status parameter is sent to the control assembly 220.
In the present embodiment, because the evaporative cooling equipment 10 is that had by preheating the air of the air inlet
There is the preheated air of lower relative humidity, and the preheated air is passed through in the cooling device 300 and carries out hot and humid area
The destination object is cooled with realizing.Therefore, can include as a kind of embodiment, the detection components 210
It is arranged at the temperature sensor and humidity sensor of the air inlet.The temperature sensor can be used for gathering the air inlet
The temperature parameter of the air at place, the humidity sensor can be used for the relative humidity ginseng for gathering the air of the air inlet
Number, the detection means 200 can be by gathering the temperature parameter of the air with relative humidity pa and by this two ginsengs
Number, selectively turns on or closes the preheating device 100.
In the present embodiment, the control assembly 220 is electrically connected with the detection components 210, the control assembly 220
It can be used for handling the air status parameter to obtain corresponding air relative status parameter.
In the present embodiment, the reaction component 230 is electrically connected with the control assembly 220, and with the pre- hot charging
100 electric connections are put, can be used for selectively turning on or close the preheating device according to the air relative status parameter
100。
It is abundant before ensureing that the air carries out hot and humid area in the entrance cooling device 300 by above-mentioned design
Preheating to obtain the relatively low preheated air of relative humidity, while improving the efficiency of the evaporative cooling equipment 10, make originally
Air with compared with low relative humidity preheated can not enter directly into the cooling device 300 and carry out hot and humid area, save
Energy consumption and the evaporative cooling equipment 10 is reduced with efficiency fluctuation amplitude caused by changes in atmospheric.
Referring to Fig. 4, Fig. 4 is a kind of structured flowchart of the control assembly 220 shown in Fig. 3.In the present embodiment, the control
Component 220 processed includes processor 222, controller 223 and memory 221, the processor 222 and the electricity of detection components 210
Property connection, the controller 223 is electrically connected with the processor 222, and the memory 221 and the processor 222 are electrical
Connection.
In this embodiment, the processor 222 can be used for handling the air status parameter and obtaining accordingly
Air condition processing information；The memory 221 can be used for handling the air condition information and the air condition
The corresponding relation of parameter is stored；The controller 223, which can be used for being generated according to the air condition processing information, to be corresponded to
Air relative status parameter.
Alternatively, the processor 222 can be a kind of IC chip, have the disposal ability of signal.Above-mentioned
Processor 222 can be at general processor, including central processing unit (Central Processing Unit, CPU), network
Manage device (Network Processor, NP) etc..Can also be digital signal processor (DSP)), application specific integrated circuit (ASIC),
Field programmable gate array (FPGA) either other PLDs, discrete gate or transistor logic, discrete hard
Part component.General processor can be microprocessor or can also be any conventional processor etc..
Alternatively, the memory 221 can include high speed random access memory, may also include nonvolatile memory, such as
One or more magnetic storage device, flash memory or other non-volatile solid state memories.In certain embodiments, it is described
Memory 221 can further comprise leading to relative to the remotely located remote memory of processor 222, these remote memories
Network connection is crossed to the evaporative cooling equipment 10.The example of above-mentioned network can include but is not limited to internet, enterprises
Net, LAN, mobile radio communication and combinations thereof.
Alternatively, the controller 223 can include single-chip microcomputer or PLC, as a kind of embodiment, the controller
223 can include Atmega128 single-chip microcomputers.
Based on above-mentioned design, evaporative cooling equipment 10 that the present embodiment is provided, cooled down being passed through air with the evaporation
Before water source medium in equipment 10 carries out hot and humid area, the state of the air is detected and is selectively turned on or closed
The preheating device 100, the air for ensureing to be passed through in the evaporative cooling equipment 10 have the phase lower than the air in air
To humidity, stronger wettability power, the preheated air of same air quantity is carrying out hot and humid area compared to the air in air
When can absorb more vapor, take away more heats, so as to improve the operating efficiency of the evaporative cooling equipment 10, section
About air quantity；And the state of the air is detected in real time, the selective preheating air, the air is reduced with atmospheric conditions
State fluctuating range caused by change, imitated so as to reduce caused by the evaporative cooling equipment 10 changes with the air condition
The energy is saved while rate fluctuating range.
Second embodiment：
Referring to Fig. 5, the flow chart for entering wind process method that Fig. 5 is provided by second embodiment of the invention.The present embodiment
What is provided enters wind process method and can reduce the relative humidity of air so that air carries out heat entering in cooling device 300
During wet exchange, more vapor can be absorbed, take away more heats, lift the operating efficiency of cooling device 300.
Evaporative cooling equipment is a kind of by transmission of heat by contact and evaporative heat loss, the heat transfer in water to air, by sky
Gas brings heat in air into, and then realizes the temperature for reducing destination object.It is known that under any temperature, molecule is not all
Move disconnectedly, the fluid molecule for always having some speed larger in liquid fly out liquid level depart from constraint and turn into gaseous molecular；Therefore,
Liquid surface has vapour molecule under any temperature.Outbound molecule with after other molecular collisions, it is possible to return liquid level
It is upper or into liquid internal.If the molecule to fly out is more than what is flown back, liquid is just evaporating.
In evaporation process, the molecule bigger than liquid mean kinetic energy is flown out liquid level, and the molecule for retaining liquid internal is had
Some mean kinetic energies diminish.So in evaporation process, if extraneous not liquid supplement energy, the temperature of liquid will under
Drop.If do not want to allow fluid temperature to decline, it is necessary to absorb the heat of surrounding air or object, here it is evaporation endothermic.
When air is flowed through around the water surface or water droplet, pass through between the saturated air boundary layer of water surface formation and primary air
Molecule spreads and turbulent diffusion, the saturated air in boundary layer is constantly blended with primary air, so that primary air state is sent out
Changing.Therefore, air and the hot and humid area process of water can be considered the process that bulk air constantly mixes with boundary layer air.
The temperature difference that Exchange of apparent heat between air and water is depended between boundary layer and surrounding air, and wet exchange and by
The water vapor concentration that latent heat exchange caused by it then depends on therebetween is poor, in other words depending on the vapor between them point
Pressure differential.
When the timing of cooling water temperature one of evaporative cooling equipment, the dry-bulb temperature of air determines the heat transfer between water and air
The temperature difference, and then the transmission of heat by contact amount between water and air is determined, and the wet-bulb temperature of air determines that the water between water and air steams
Atmospheric pressure is poor, and then determines the Evapotranspiration heat of water.For aerosol type evaporative cooling equipment, its cooling procedure includes connecing
Two kinds of radiating and evaporative heat loss are touched, wherein evaporative heat loss is its main heat sink mode again, and contact heat dissipation capacity proportion is smaller,
Especially become apparent in summer.The size of the wet-bulb temperature of air directly affects the evaporative heat loss of water in evaporative cooling equipment, empty
The wet-bulb temperature of gas is lower, then the water droplet in equipment and the water vapour pressure difference between surrounding air are bigger, the evaporative heat loss of water
Amount is bigger, otherwise smaller.Therefore, in theory, the dry-bulb temperature of relative atmospheric, the wet-bulb temperature of air is to evaporative cooling equipment
Cooling effect influence it is bigger.
When temperature is 30 DEG C~40 DEG C, the specific heat capacity C=1.005KJ/Kg.k of air, the specific heat capacity of water is 4.174KJ/
Kg.k.It is assumed that the gas-water ratio into evaporative cooling equipment 10 is 1, air often heats up 1 DEG C, then can cool water Δ t=
1.005/4.174=0.241 DEG C.
It can be seen that the sensible heat that air temperature rise is taken away in equipment is smaller to the cooling capacity of water.The air entered in equipment
Dry-bulb temperature on cooling tower exchange capability of heat influence very little.
According to humid air enthalpy calculation formula：
I=1.01t+ (2500+1.84t) d or i=(1.01+1.84d) t+2500d (kj/kgDry air)
In formula：T-air themperature DEG C
The water capacity kg/kg dry air of d-air
The average specific heat at constant pressure kj/ (kg.K) of 1.01-dry air
The average specific heat at constant pressure kj/ (kg.K) of 1.84-vapor
The latent heat of vaporization kj/kg of water at 2500-0 DEG C
As can be seen from the above equation：(1.01+1.84d) t is the heat varied with temperature, i.e. " sensible heat "；And 2500d is then 0
DEG C when dkg water the latent heat of vaporization, it only changes with water capacity, temperature independent, is " latent heat ".
Enthalpy in air refers to the total amount of heat contained in air, generally on the basis of the unit mass of dry air, is referred to as
Specific enthalpy.
By above-mentioned analysis, it has been recognised by the inventors that temperature is higher, specific enthalpy is higher；Water capacity is bigger, and specific enthalpy is bigger, and containing wet
The influence measured to specific enthalpy is bigger.Therefore, the enthalpy difference between outlet air and intake air is the heat that air is taken away from cooling tower
Amount, it is nearly equal to the heat of water temperature drop release.In other words, if it is desired to improve heat exchange amount, then need to improve enthalpy difference.Improve enthalpy difference
There are two kinds of approach：Increase gateway Air Temperature Difference and increase gateway air humidity content is poor.And air maximum water capacity depends on
The dry-bulb temperature of air, to increase water capacity, then need to improve the dry-bulb temperature of air.So it has been recognised by the inventors that evaporating
In the case that cooling device inlet air condition (i.e. atmospheric condition) is certain, to improve enthalpy difference, it should outlet air temperature is improved,
And the water capacity for improving air is fully contacted with water.
In summary, it has been recognised by the inventors that to improve the heat exchange efficiency of evaporative cooling equipment, the temperature of intake air can be improved
Degree, strengthen the wettability power of air, increase the heat absorption capacity of unit air.When air by etc. wet preheating after, its water capacity is constant,
Hydrone partial pressure is constant, and moisture film hydrone does not weaken to its Boundary motion ability；But after being preheated due to air, bulk air
Saturation degree reduce, border hydrone greatly enhanced to bulk air locomitivity, and air moisture absorption heat absorption capacity is also able to
Enhancing；Simultaneously as the air dry-bulb temperature of identical relative humidity is higher, wet-bulb temperature is higher；By the bar for evaporating cooling water
Part is that higher than air's wet bulb temperature, (if water temperature is less than or equal to air's wet bulb temperature, the heat needed for water evaporation all comes water temperature
Air is come from, is the invalid evaporation wasted water for evaporative cooling equipment), and the wet-bulb temperature of intake air determines evaporation
The leaving water temperature of cooling device, so the dry-bulb temperature and relative humidity of raising outlet air that can not be infinitely.
Therefore, based on above-mentioned analysis, what the present embodiment was provided enters wind process method, can be used for cooling device 300, institute
State cooling device 300 and be provided with air inlet and exhaust outlet, the air intake processing mode comprises the following steps：
Step S200, air is preheated to obtain preheated air.
In the present embodiment, work, the preheating device are engaged with the cooling device 300 using preheating device 100
100 are used to preheat air to obtain preheated air.Preferably as a kind of embodiment, the preheating device 100 can
To be arranged at the air inlet.
Step S400, preheated air is passed through cooling device 300.
In the present embodiment, the preheated air has lower relative humidity compared to the air in air, is being passed through
After the cooling device 300, when hot and humid area occurs with the water source medium in the cooling device 300, it can absorb more
Vapor, more heats are taken away, lift the efficiency of the cooling device 300, save the energy.
Referring to Fig. 6, another flow chart for entering wind process method that Fig. 6 is provided by second embodiment of the invention.
In the present embodiment, it is described enter wind process method can also include：
Step S100, the state of air is detected to obtain air status parameter.
In the present embodiment, air can be detected, to obtain corresponding air status parameter, the air condition
Parameter can include but is not limited to：The dry-bulb temperature of air, wet-bulb temperature, relative humidity, enthalpy, water capacity, dew-point temperature with
And the parameter such as steam partial pressure.
By monitoring these parameters, the air intake quality of the cooling device 300 can be adjusted in real time, it is described cold to ensure
But the operating efficiency of device 300.
Step S110, judges whether air status parameter meets to require.
In the present embodiment, the air status parameter according to detected by step S100, with the parameter pre-set
Compare, judge whether the air meets technological requirement, and then selectively turn on or close the preheating device 100.
Step S120, close preheating device 100.
In the present embodiment, the result judged according to step S110, when the air status parameter meets to require, close
Close the preheating device 100 and perform step S400.
Step S130, open preheating device 100.
In the present embodiment, the result judged according to step S110, when the air status parameter is unsatisfactory for requiring,
The preheating device 100 is opened, and performs step S200
Step S200, air is preheated to obtain preheated air.
In the present embodiment, the air being passed through after the preheating device 100, preheated in the preheating device 100 to obtain
Obtain preheated air.
Step S500, it is passed through cooling device 300.
In the present embodiment, the result judged according to step S110, will when the air status parameter meets to require
The air is passed through the cooling device 300；And the preheated air obtained by step S200, it will also be passed through the cooling device
300。
Based on above-mentioned design, it is possible to increase the cooling device 300 reduces described to the adaptability of different atmospheric conditions
Cooling device 300 makes the cooling device 300 not limited by environmental working condition with efficiency fluctuation amplitude caused by changes in atmospheric
System, while the energy is saved, improve the operating efficiency of the cooling device 300.
Referring to Fig. 7, Fig. 7 is the flow chart of step S110 sub-step in Fig. 6.In the present embodiment, step S110 can
With including following sub-step：
Step S111, judges whether the first temperature is more than preset temperature.
In the present embodiment, the air status parameter obtained according to step S100, wherein, the air status parameter includes
First temperature of air, first temperature is compared with preset temperature, judge whether first temperature reaches described pre-
If temperature value.When first temperature is less than or equal to the preset temperature, step S130 is performed, opens the preheating device
100；When first temperature is more than the preset temperature, step S112 is performed.
Step S112, judges whether the first relative humidity is more than default relative humidity.
In the present embodiment, the air status parameter obtained according to step S100, wherein, the air status parameter includes
First relative humidity of air, first relative humidity is compared with default relative humidity, judge that described first is relatively wet
Whether degree is less than default rh value.When first relative humidity is more than the default relative humidity, step is performed
S130, open the preheating device 100；When first relative humidity is less than or equal to the default relative humidity, perform
Step S120, close the preheating device 100.
Based on above-mentioned design, what the present embodiment was provided enters wind process method, and applied to cooling device 300, air is led to
Before entering the progress of cooling device 300 hot and humid area, the state of the air is detected to obtain corresponding air condition
Parameter, when the air status parameter is unsatisfactory for technological requirement, opens the preheating device 100 and the air is preheated
And preheated air is obtained, the preheated air has the relative humidity lower than the air, stronger wettability power, Neng Gouti
The cooling effectiveness of the high cooling device 300, reduce the energy consumption of the cooling device 300；Meanwhile when the air status parameter
When meeting technological requirement, the preheating device 100 is closed.The air intake pre-heating mean that the present embodiment provides not only increases described cold
But the cooling effect of device 300, the cooling device 300 is also improved for the adaptability of different atmospheric conditions, is reduced
The cooling device 300 makes the cooling device 300 not limited by environmental working condition, saved with efficiency fluctuation caused by atmospheric conditions
The about energy, beneficial to environmental protection.
Meanwhile in other embodiments of the invention, it can also dynamically judge institute by detecting the state of the air
State the difference value of the state of the air under air and standard condition, wherein, the difference value can include temperature difference and
Difference of relative humidity etc..According to the difference value, the watt level of the preheating device 100 is dynamically controlled, is made described pre-
The state of hot-air is just met for or is slightly better than the status condition of the air under standard condition, further described cold in guarantee
But device 300 saves the energy while efficiency operation is kept.
The evaporative cooling equipment 10 that wind process method combination first embodiment that what the present embodiment was provided enter is provided is made to have
Body explanation.
In order to briefly describe, the present embodiment does not refer to part, can refer to first embodiment.
In summary, what the present embodiment was provided enters wind process method, after air is preheated, obtains relative
The lower preheated air of humidity, improving the wettability power of air so that the heat absorption capacity of the air of unit air volume greatly improves,
And then the efficiency of cooling device 300 is improved, air quantity is saved, reduces energy consumption.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Claims (10)
1. one kind enters wind process method, applied to cooling device, it is characterised in that it is described enter wind process method include：
Air is preheated, obtains preheated air；
The preheated air is passed through the cooling device.
2. enter wind process method as claimed in claim 1, it is characterised in that it is described that air is preheated, it is empty to obtain preheating
The step of gas, includes：
The air is heated using preheating device, obtains the preheated air, wherein, the preheating device with it is described cold
But device is engaged.
3. enter wind process method as claimed in claim 2, it is characterised in that the cooling device is provided with air inlet and air draft
Mouthful, the preheating device is arranged at the air inlet.
4. as claimed in claim 3 enter wind process method, it is characterised in that it is described enter wind process method also include：
The state of the air is detected to obtain air status parameter and selectively turn on or close the preheating device.
5. enter wind process method as claimed in claim 4, it is characterised in that the temperature of the air is the first temperature, by institute
The first temperature is stated compared with preset temperature,
When first temperature is less than the preset temperature, the preheating device is opened；
When first temperature is more than or equal to the preset temperature, the preheating device is closed.
6. enter wind process method as claimed in claim 5, it is characterised in that the relative humidity of the air is first relatively wet
Degree, first relative humidity is compared with default relative humidity,
When first relative humidity is more than the default relative humidity, the preheating device is opened；
When first relative humidity is less than or equal to the default relative humidity, the preheating device is closed.
7. a kind of evaporative cooling equipment, it is characterised in that the evaporative cooling equipment includes cooling device and preheating device, described
Cooling device is engaged with the preheating device；
The preheating device is used to preheat air to obtain preheated air；
The preheated air is passed through the cooling device.
8. evaporative cooling equipment as claimed in claim 7, it is characterised in that the cooling device is provided with air inlet and air draft
Mouthful, the preheating device is arranged at the air inlet.
9. evaporative cooling equipment as claimed in claim 8, it is characterised in that the evaporative cooling equipment also includes detection dress
Put, the detection means is electrically connected with the preheating device, and the detection means is used for the shape to the air of the air inlet
State is detected and is selectively turned on or closed the preheating device.
10. evaporative cooling equipment as claimed in claim 9, it is characterised in that the detection means includes：
The air inlet is arranged at, for corresponding air condition ginseng to be detected and obtained to the air condition of the air inlet
Several detection components；
It is electrically connected with the detection components and for being handled the air status parameter to obtain corresponding air phase
To the control assembly of state parameter；And
It is electrically connected with the control assembly and is electrically connected with the preheating device, for is joined according to the air relative status
Number selectively turns on or closed the reaction component of the preheating device.
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| CN201710943396.7A CN107676899B (en) | 2017-10-11 | 2017-10-11 | Evaporative cooling equipment and air inlet treatment method thereof |
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