CN114234674A - Air cooler water film cooling strengthening device and method - Google Patents
Air cooler water film cooling strengthening device and method Download PDFInfo
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- CN114234674A CN114234674A CN202111383936.3A CN202111383936A CN114234674A CN 114234674 A CN114234674 A CN 114234674A CN 202111383936 A CN202111383936 A CN 202111383936A CN 114234674 A CN114234674 A CN 114234674A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 176
- 238000000034 method Methods 0.000 title claims abstract description 89
- 238000001816 cooling Methods 0.000 title claims abstract description 48
- 238000005728 strengthening Methods 0.000 title claims abstract description 22
- 230000008016 vaporization Effects 0.000 claims abstract description 35
- 238000009834 vaporization Methods 0.000 claims abstract description 34
- 230000001939 inductive effect Effects 0.000 claims abstract description 5
- 238000009826 distribution Methods 0.000 claims description 27
- 238000000889 atomisation Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000003892 spreading Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims 1
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000005660 hydrophilic surface Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000032770 biofilm formation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D5/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation
- F28D5/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation in which the evaporating medium flows in a continuous film or trickles freely over the conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/04—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by preventing the formation of continuous films of condensate on heat-exchange surfaces, e.g. by promoting droplet formation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses an air cooler water film cooling strengthening device and a method, which comprises a tube bundle, a hanging template, a water tank, an atomizer and an airflow guide plate, wherein the hanging template is arranged on the tube bundle; the tube bundle is obliquely arranged above the water pool; the hanging templates are arranged in parallel at intervals, and the tube bundle penetrates through each hanging template; an atomizer is arranged in the water tank; the airflow guide plate is arranged between the tube bundle, the hanging template and the water pool; and an air inducing device is arranged above the air cooler. The device realizes water film cooling strengthening on the basis of a closed air cooler, wherein atomized water drops reach the surface of the film hanging plate, and the water drops are captured by the film hanging plate and quickly spread to generate a thin water film under the action of self gravity, airflow, special film hanging plate shape and hydrophilic surface; the method greatly promotes the water film vaporization efficiency and direct heat exchange on the heat exchange surface, realizes high-efficiency cooling with low water consumption, and has the characteristics of simple structure, lower cost and the like.
Description
Technical Field
The invention relates to a cooling device, in particular to an air cooler water film cooling strengthening device and method.
Background
The air cooler is an air cooler for short, and is a heat exchange device which is used as condensation and cooling most in petrochemical industry, heating and ventilation air conditioning and oil and gas processing production. Air coolers are widely used in industrial circulating cooling water, and are classified into a development type and a closed type according to whether the circulating cooling water is in contact with the atmosphere. The open air cooler mainly absorbs heat through evaporation of circulating cooling water, and then the heat is taken out by air to achieve the purpose of cooling, the evaporation loss of circulating water is large and is about 1-2% of the circulating water amount, meanwhile, the circulating water is concentrated due to evaporation, the water quality is poor, and the sewage discharge amount loss is large.
The air cooler of the closed air cooler generally comprises main parts such as a cooled medium channel-tube bundle, a tube box, a fan, a framework and the like; circulating water circulates in a closed heat exchange inner loop and is indirectly exchanged with air through a heat exchange cooled medium channel, so that the direct evaporation of the circulating water is avoided, and the water loss is greatly reduced. However, the existing closed air cooler mainly relies on spray water to perform sensible heat exchange, the latent heat utilization rate is low, and the heat exchange efficiency is generally poor.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an air cooler water film cooling strengthening device with good heat dissipation and cooling effects; the invention also provides an air cooler water film cooling strengthening method.
In order to solve the technical problems, the technical scheme adopted by the device is as follows: the device comprises a tube bundle, a hanging template, a water pool, an atomizer and an airflow guide plate; the tube bundle is obliquely arranged above the water pool; the hanging templates are arranged in parallel at intervals, and the tube bundle penetrates through each hanging template; an atomizer is arranged in the water tank; the airflow guide plate is arranged between the tube bundle, the hanging template and the water pool; and an air inducing device is arranged above the air cooler.
According to the device, the included angle between the tube bundle and the horizontal plane is 20-60 degrees, and the hanging template is perpendicular to the tube bundle.
The film hanging plate is a corrugated plate, and the internal angle of the corrugated plate is 150-180 degrees.
The device of the invention is characterized in that the film hanging plate is coated with a hydrophilic coating.
The distance between the adjacent hanging templates of the device is 3-5 mm.
The air flow guide plate of the device adopts a shutter type air flow guide structure.
The method adopts the device, and is characterized in that the method comprises the following processes: the atomization process: in the cooling process of the air cooler, the atomizer is opened to atomize water in the water tank into liquid drops;
(II) film distribution: under the action of induced air flow generated by an induced air device, the liquid drops rise and are attached to the hanging template, and a stable water film is formed by spreading on the hanging template;
(III) water film vaporization process: closing the atomizer, and continuously vaporizing the water film until the state of the water film is broken in the process that the induced air flow flows through the surface of the water film;
(IV) repeating the atomization process to the water film vaporization process.
In the film distribution process of the method, the flow velocity of induced air after passing through the airflow guide plate is 0-1 m/s.
In the water film vaporization process of the method, the flow velocity of induced air after passing through the air flow guide plate is 2-4 m/s.
In the atomization process of the method, the atomizer atomizes water into liquid drops with the diameter of 50 mu m or less.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the device realizes water film cooling strengthening on the basis of a closed air cooler, atomized water drops reach the surface of the hanging template in the water film cooling strengthening process, the atomized water drops quickly stretch under the action of self gravity and wind power to generate a water film, and heat is directly exchanged on the heat exchange surface through water film vaporization latent heat, so that efficient cooling is realized. The atomizer adopted by the invention has uniform and sufficient atomization, the particle size of liquid drops can reach 50 mu m or below, and the vaporization speed of water is greatly improved. The invention adopts the corrugated film hanging plate, not only effectively increases the heat exchange area, but also can form vortex locally in the film distribution process to collide and capture water drops, effectively promotes the generation of the water film, strengthens the vaporization of the water film and fully utilizes the latent heat. The invention realizes water film arrangement according to the water film vaporization heat and mass transfer theory, solves the problems of difficult film hanging and poor quality of formed water films, improves the stability and heat exchange efficiency of the water films, realizes low water consumption and high-efficiency cooling, and has the characteristics of simple structure, lower cost and the like. According to the device, the hydrophilic coating is coated on the film hanging plate, and the hydrophilic surface can effectively reduce the water film contact angle.
The method of the invention realizes high-efficiency heat dissipation and water resource saving by promoting the surface of the biofilm formation plate to quickly form a water film and vaporize, and has the characteristics of good cooling effect and high cooling efficiency.
According to the method, the airflow direction and the airflow speed of the heat exchange interface can be controlled through the airflow guide plate, and in the film distribution process stage, the capturing efficiency of the film hanging plate on water drops can be improved relative to the small oblique airflow of the film hanging plate, so that the water film forming is facilitated; and in the water film vaporization stage, the parallel high airflow velocity relative to the film hanging plate is beneficial to the rapid proceeding of the vaporization reaction and simultaneously takes away the surface heat rapidly. Realizing high-efficiency film formation and vaporization.
The method of the invention greatly reduces the thickness of the water film by controlling the water atomization form and the air flow speed and direction control of the heat exchange interface, and solves the problems of low vaporization efficiency, high heat transfer resistance and influence on cooling effect caused by large water film thickness of the traditional shower type wet air cooler.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic side view of the film laying process of the present invention;
FIG. 3 is a schematic side view of the water film of the present invention during vaporization;
FIG. 4 is a schematic diagram of a film hanging structure of a film hanging plate in the film laying process.
In the figure: 1-cooled medium channel, 2-film hanging plate, 3-airflow guider, 4-water pool, 5-atomizer, 6-atomized water drop and 7-water film.
Detailed Description
As shown in fig. 1, 2 and 3, the water film cooling enhancement device of the air cooler comprises a tube bundle, a hanging template 2, a water pool 4, an atomizer 5 and an airflow guide plate 3. The tube bundle is composed of cooled medium channels 1; the number of the cooled medium channels 1 is a plurality, and the channels are arranged in parallel to form a tube bundle; a medium to be cooled flows through the inside of the cooled medium passage; the water inlet end and the water outlet end of the tube bundle are both provided with a temperature detector and a humidity detector for detecting the cooling effect. The tube bundle is obliquely arranged above the water pool 4; the included angle between the cooled medium channel 1 in the tube bundle and the horizontal plane can be set between 20 degrees and 60 degrees. The number of the hanging templates 2 is several, and each cooled medium channel 1 passes through each hanging template 2; the hanging templates 2 are arranged in parallel and at intervals and are all vertical to the cooled medium channel 1; the distance between the adjacent hanging templates 2 is 3-5 mm, and the thickness of each hanging template 2 is 0.2-0.3 mm; the hanging templates 2 are all corrugated plates, and the internal angle alpha of each corrugation is 150-180 degrees; the hanging template 2 is made of copper sheets, aluminum sheets or zinc sheets, and hydrophilic coatings are coated on the two sides or the single side; the hydrophilic coating has the effects of greatly reducing the contact angle of water, enabling a water film to be rapidly spread to form a thin liquid film, and simultaneously has the characteristics of pollution resistance, corrosion resistance and scaling resistance. The connection form of the film hanging plate 2 and the cooled medium channel 1 is expansion joint.
Referring to fig. 1, 2, 3 and 4, the water tank 4 of the air cooler water film cooling enhancement device is provided with an atomizer 5, preferably a pulse atomizer. An airflow guide plate 3 is arranged below the tube bundle and the hanging template 2; the airflow guide plate 3 is of a plate-shaped structure, is positioned above the water pool 4 and is arranged in parallel with the tube bundle. The air flow guide plate 3 is provided with strip-shaped air flow guide openings penetrating through the plate wall, and the length direction of each air flow guide opening is vertical to each cooled medium channel 1; an airflow guide turning plate is axially and rotatably connected to the airflow guide plate 3 at the airflow guide opening; the airflow guide turning plate can cover the airflow guide opening and can be turned upwards by 90 degrees; thus, a shutter type airflow guide structure is formed, and induced airflow passing through the airflow guide opening can blow towards the tube bundle and the hanging template 2 at an angle of 0-90 degrees. An air inducing device is arranged above the air cooler and used for generating air inducing airflow; the induced air flow passes through the upper part of the water pool 4, the air flow guide plate 3, the tube bundle and the hanging template 2 from bottom to top, the angle of the induced air flow sprayed to the hanging template 2 is adjusted by adjusting the angle of the air flow guide turning plate on the air flow guide plate 3, and a water film or a vaporized water film is formed on the hanging template 2 by controlling the flow speed of the induced air flow.
The air cooler water film cooling strengthening method adopts the following process: the atomization process: in the cooling process of the air cooler, the atomizer 5 is turned on, and water in the water tank is quickly atomized into liquid drops of 50 microns or less.
(II) film distribution: under the action of induced air flow generated by the induced air device, the liquid drops rise and enter gaps of the film hanging plate; meanwhile, the opening and closing angle of the airflow guide turning plate of the airflow guide plate 3 is adjusted, the flow velocity of induced air flow passing through the airflow guide plate 3 is reduced to 0-1 m/s, and the direction of the induced air flow is guided to form a certain angle with the film hanging plate 2, so that water mist droplets are captured and attached by the film hanging plate 2 and quickly spread to form a stable thin water film under the action of a coating; the water film realizes balance under the combined action of airflow resistance, self gravity, interfacial tension, interfacial friction and the like, and is stably attached; the low wind speed described above facilitates droplet capture and water film formation. The included angle between the induced air flow and the film hanging plate can be adjusted within the range of 0-90 degrees.
(III) water film vaporization: closing the atomizer 5, and adjusting the airflow guide turning plate of the airflow guide plate 3 to a fully open state or a proper open state to ensure that the flow velocity of induced airflow reaches 2-4 m/s and the airflow direction is basically parallel to the film hanging plate 2; in the process that the induced air flow flows through the surface of the water film, the water film is continuously vaporized until the state of the water film is broken; the high wind speed is beneficial to the rapid vaporization and heat transfer of the water film, and the heat exchange efficiency is improved. The included angle between the induced air flow and the film hanging plate can be adjusted within the range of 0-90 degrees.
(IV) repeating the atomization process to the water film vaporization process. The time of the film distribution process and the time required by the vaporization of the water film are different according to different cooling loads of the cooled medium, and the time duration is determined by experiments, wherein the general time duration is the film distribution process, namely, the vaporization of the water film =1 (3-5). The atomized water source adopts soft water or desalted water, and the conditions of scaling on the heat exchange surface and the like can be prevented.
Example 1: the air cooler water film cooling strengthening method adopts the following specific process.
Adjusting the included angle of the whole cooled medium channel 1 and the horizontal plane to be 30 degrees, wherein the wind speeds in the film distribution process and the water film vaporization process are respectively 0.5m/s and 2m/s, the film distribution process is that the water film vaporization time length ratio is =1:3, and the corrugation internal angle is 160 degrees; meanwhile, a conventional horizontal light pipe air cooler is arranged as a reference, the air quantity, the water distribution quantity, the water inlet quantity and the water temperature are consistent with the system, and the temperature of the water inlet and the water outlet detection meter is recorded in a table 1.
Example 2: the air cooler water film cooling strengthening method adopts the following specific process.
Adjusting an included angle of the whole cooled medium channel and the horizontal plane to be 45 degrees, wherein the wind speeds in the film distribution process and the water film vaporization process are respectively 0.5m/s and 2m/s, the water film vaporization time length ratio in the film distribution process is =1:3, and the corrugation internal angle is 160 degrees; meanwhile, a conventional horizontal light pipe air cooler is arranged as a reference, the air quantity, the water distribution quantity, the water inlet quantity and the water temperature are consistent with the system, and meanwhile, the temperature of a water inlet and a water outlet detection meter is recorded, which is shown in table 1.
Example 3: the air cooler water film cooling strengthening method adopts the following specific process.
Adjusting an included angle of the whole cooled medium channel and the horizontal plane to be 60 degrees, wherein the wind speeds in the film distribution process and the water film vaporization process are respectively 0.5m/s and 2m/s, the film distribution process is that the water film vaporization time length ratio is =1:3, and the corrugation internal angle is 150 degrees; meanwhile, a conventional horizontal light pipe air cooler is arranged as a reference, the air quantity, the water distribution quantity, the water inlet quantity and the water temperature are consistent with the system, and meanwhile, the temperature of a water inlet and a water outlet detection meter is recorded, which is shown in table 1.
Example 4: the air cooler water film cooling strengthening method adopts the following specific process.
The included angle between the whole cooled medium channel and the horizontal plane is adjusted to be 45 degrees, the wind speeds in the film distribution process and the water film vaporization process are respectively 1m/s and 4m/s, the time length ratio of the water film vaporization process in the film distribution process is =1:3, the corrugation internal angle is 160 degrees, meanwhile, a conventional horizontal light tube air cooler is arranged as a comparison, the air volume, the water distribution quantity, the water inlet quantity and the water temperature are consistent with the system, and meanwhile, the temperature of a water inlet and a water outlet detection meter is recorded, and the temperature is shown in a table 1.
Example 5: the air cooler water film cooling strengthening method adopts the following specific process.
The included angle between the whole cooled medium channel and the horizontal plane is adjusted to be 45 degrees, the wind speeds in the film distribution process and the water film vaporization process are respectively 1m/s and 4m/s, the water film vaporization time length ratio in the film distribution process is =1:5, the corrugation internal angle is 160 degrees, meanwhile, a conventional horizontal light tube air cooler is arranged for comparison, the air volume, the water distribution quantity, the water inlet quantity and the water temperature are consistent with the system, and meanwhile, the temperature of a water inlet and a water outlet detection meter is recorded, and the table 1 shows.
Example 6: the air cooler water film cooling strengthening method adopts the following specific process.
The included angle between the whole cooled medium channel and the horizontal plane is adjusted to be 45 degrees, the wind speeds in the film distribution process and the water film vaporization process are respectively 1m/s and 4m/s, the water film vaporization time length ratio in the film distribution process is =1:3, the corrugation internal angle is 170 degrees, meanwhile, a conventional horizontal light tube air cooler is arranged for comparison, the air volume, the water distribution quantity, the water inlet quantity and the water temperature are consistent with the system, and meanwhile, the temperature of a water inlet and a water outlet detection meter is recorded, and the table 1 shows.
The environmental temperature during the test of the above examples was substantially 20 deg.c and the humidity was 40% to 50%, and the results are reported in table 1 below.
Table 1: results of the examples are recorded
As can be seen from Table 1, compared with the conventional air cooler, the cooling effect can be effectively improved by adopting the device and the method. The device and the method realize water film cooling strengthening on the basis of a closed air cooler, wherein in the water film cooling strengthening process, atomized water drops reach the surface of the film hanging plate, and the water drops are captured by the film hanging plate and quickly spread to generate a thin water film under the action of self gravity, airflow, special film hanging plate shape and hydrophilic surface; the method divides the cooling process into two stages of water film arrangement and water film, dynamically adjusts the optimal conditions of the two stages through the airflow guide plate, greatly promotes the water film vaporization efficiency and direct heat exchange on the heat exchange surface, realizes high-efficiency cooling with low water consumption, and has the characteristics of simple structure, lower cost and the like.
Claims (10)
1. The utility model provides an air cooler water film cooling reinforces device which characterized in that: the device comprises a tube bundle, a hanging template (2), a water pool (4), an atomizer (5) and an airflow guide plate (3); the tube bundle is obliquely arranged above the water pool (4); the hanging templates (2) are arranged in parallel at intervals, and the tube bundle penetrates through each hanging template (2); an atomizer (5) is arranged in the water tank (4); the airflow guide plate (3) is arranged between the tube bundle and the hanging template (2) and the water pool (4); and an air inducing device is arranged above the air cooler.
2. The air cooler water film cooling enhancement device of claim 1, wherein: the included angle between the tube bundle and the horizontal plane is 20-60 degrees, and the hanging template (2) is perpendicular to the tube bundle.
3. The air cooler water film cooling enhancement device of claim 1, wherein: the film hanging plate (2) is a corrugated plate, and the internal angle of the corrugation is 150-180 degrees.
4. The air cooler water film cooling enhancement device of claim 1, wherein: the membrane hanging plate (2) is coated with a hydrophilic coating.
5. The air cooler water film cooling enhancement device of claim 1, wherein: the distance between the adjacent hanging templates (2) is 3-5 mm.
6. The air cooler water film cooling enhancement device according to any one of claims 1 to 5, characterized in that: the airflow guide plate (3) adopts a shutter type airflow guide structure.
7. An air cooler water film cooling strengthening method adopts the device of any one of claims 1-6, and is characterized in that the method comprises the following processes: the atomization process: in the cooling process of the air cooler, the atomizer (5) is turned on to atomize water in the water pool (4) into liquid drops;
(II) film distribution: under the action of induced air flow generated by an induced air device, the liquid drops rise and are attached to the hanging template (2), and a stable water film is formed by spreading on the hanging template (2);
(III) water film vaporization process: closing the atomizer (5), wherein the water film is continuously vaporized in the process that the induced air flow flows through the surface of the water film until the state of the water film is broken;
(IV) repeating the atomization process to the water film vaporization process.
8. The air cooler water film cooling strengthening method according to claim 7, characterized in that: in the film distribution process, the flow velocity of induced air after passing through the air flow guide plate (3) is 0-1 m/s.
9. The air cooler water film cooling strengthening method according to claim 7, characterized in that: in the water film vaporization process, the flow velocity of induced air flow passing through the air flow guide plate (3) is 2-4 m/s.
10. The air cooler water film cooling strengthening method according to claim 7, 8 or 9, characterized in that: in the atomization process, the atomizer (5) atomizes water into droplets of 50 μm or less.
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| CN202111383936.3A CN114234674B (en) | 2021-11-19 | 2021-11-19 | Water film cooling strengthening device and method for air cooler |
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| CN202111383936.3A CN114234674B (en) | 2021-11-19 | 2021-11-19 | Water film cooling strengthening device and method for air cooler |
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| CN114234674B CN114234674B (en) | 2024-01-23 |
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| CN1184245A (en) * | 1996-11-28 | 1998-06-10 | 木村工机株式会社 | Heat exchange coil |
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