CN100480590C - Point exposed plate type indirect evaporation cooler - Google Patents
Point exposed plate type indirect evaporation cooler Download PDFInfo
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- CN100480590C CN100480590C CNB2007100179897A CN200710017989A CN100480590C CN 100480590 C CN100480590 C CN 100480590C CN B2007100179897 A CNB2007100179897 A CN B2007100179897A CN 200710017989 A CN200710017989 A CN 200710017989A CN 100480590 C CN100480590 C CN 100480590C
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Abstract
The invention relates to a dew-point plate indirect evaporative cooling unit, comprising plate cooling unit core comprised by pre-cooling segment and cooling segment connected with each other and water supply device. Folded interlayers in pre-cooling and cooling segments are used to form the air channel. A first air channel is formed between light faces collocated oppositely and a second air channel is formed between rough faces collocated oppositely. Interlayers for multiple rolled ripple flow channels in horizontal flow are set in the interlayer of the first air channel. Interlayers for multiple rolled bending flow channels are set in the interlayer of the second air channel. Multiple via holes are set under the inner interlayer in cooling segment and a groove is folded at the top of interlayer forming the first air channel. The water supply device comprises spraying water pipe and water storing pool under and above pre-cooling segment and cooling segment and the water storing pool is spaced by clapboard between pre-cooling segment and cooling segment. The structure in invention makes the heat exchanging efficiency be improved greatly. The temperature of outputting air approaches the dew-point and water film of wet channel wall is distributed evenly.
Description
Technical field
The invention belongs to the air conditioner refrigerating technical field, relate to a kind of devaporizer of idle call, be specifically related to a kind of air themperature that makes and be reduced to plate type indirect evaporation cooler near dew-point temperature.
Background technology
Because energy shortage and air-conditioning consumes energy increase more so, add that environmental pollution is serious day by day in recent years, raising that people require the life comfortableness or the like various aspects press for all that exploitation is energy-conservation, healthy, environmental protection, Eco-power heating air conditioning equipment.
At present, most indirect evaporation coolers all are to utilize the wet-bulb depression of air to cause or enlarge heat transfer temperature difference, and this air themperature that makes is less near the temperature drop of the indirect evaporation cooler of wet-bulb temperature, and the scope of application is very restricted.
The purpose of the bigger temperature drop of air be should realize, energy-conservation, healthy, environmental protection requirement satisfied simultaneously, and simple in structure, economical reliable, be the Refrigeration Technique that presses for exploitation at present.
Summary of the invention
The purpose of this invention is to provide a kind of dew point plate type indirect evaporation cooler, start with, improved the heat exchange efficiency of plate type indirect evaporation cooler, the air near dew-point temperature can be provided, can keep its water capacity constant again from optimizing cooler construction.
The technical solution adopted in the present invention is, a kind of dew point plate type indirect evaporation cooler, comprise panel cooler movement and water supply installation that the precooling zone that is connected and cooling section constitute, in precooling zone and the cooling section, Zhe Die interlayer and intermediate course curved channel or corrugated channel constitute air duct jointly mutually, the one side of interlayer is a hair side, another side is made the light face, during layout, make its hair side relative with hair side, the light face is relative with the light face, constitute the primary air passage between the light face of positioned opposite, constitute secondary-air passage between the hair side of positioned opposite, and the top fold that constitutes the interlayer of primary air passage goes out a groove, the inside that constitutes the interlayer of primary air passage accompany one deck rolling have a plurality of horizontal flows to the intermediate course of corrugated channel, the inside that constitutes the interlayer of secondary-air passage accompanies the rolling intermediate course that many curved channels are arranged of one deck, in precooling zone, each curved channel is that roughly perpendicular two parts are formed, and being set to of each runner, begin the most nearby from the auxiliary air outlet, its length increases successively; In cooling section; Curved channel is a corrugated, and it flows to vertical the setting, and the bottom of interlayer is provided with a plurality of through holes; Water supply installation comprises the spray header that precooling zone and cooling section top is provided with, and precooling zone and cooling section below are provided with cistern, and cistern between precooling zone and cooling section by dividing plate separately.
Characteristics of the present invention also are,
Cooling section be connect successively more than two sections or two sections.
Wherein the material of interlayer is a fibrous paper.
Wherein the material of curved channel is a plastic sheet.
Wherein the material of corrugated channel is a plastic sheet.
Wherein the diameter of through hole is 3～5mm.
It is cold-producing medium that the present invention adopts with water, can provide dry-bulb temperature lower and near the air of dew-point temperature than outdoor wet-bulb temperature, can keep water capacity constant or water capacity is reduced.This cooler promotes effective, the comprehensive utilization of energy-conservation and the energy biglyyer, and its wet bulb efficient can reach more than 100%, and water distribution is more even.
Compare with original general plate type indirect evaporation cooler, the present invention has following characteristics:
(1) primary air channel middle branch has perforation in the cooler, makes the part air carry out precooling and enter wet channel again from perforation and become auxiliary air that the fiducial temperature of carrying out the wet exchange of heat with water reduces, and can reach thus to be lower than dew-point temperature.Thereby the primary air temperature can be near dew-point temperature, and its wet bulb efficient can reach more than 100%.
(2) adopted spray header and wetting water bag to carry out water distribution.Water is by jet pipe spraying and secondary air duct, and the groove shape that utilizes fibrous paper to make at the top again becomes water bag, and shower water just can enter water bag to full and overflow, and can paste wall and down ooze and form moisture film and evenly cover the wet channel wall.
(3) front end in the cloth hole adds and original different precooling zone.Adopt passages crooked and that each length is different that the hottest auxiliary air is discharged with the fastest speed.The back has the auxiliary air of perforated portion to utilize the part primary air to enter by perforation.Be that precooling zone is general indirect evaporation cooling, cooling section is the dew point formula evaporative cooling that perforation is arranged, and two parts can link to each other and make a movement, also can separately become two parts even several sections.
(4) primary air and auxiliary air are cross-current; Auxiliary air from lower to upper, and water sprays from top to bottom, the two forms adverse current; Above-mentioned general indirect evaporation cooling section is first section, dew point formula evaporative cooling section is second section and the 3rd section, cistern below each section separates with dividing plate, the water elder generation water that temperature is lower is pumped into from one section nearest spray of wind pushing air, and then deliver to the last period as shower water with the backwater that has heated up in the pond at the bottom of another pump handle, the use of contacting of water route and wind path two aspects, realized that primary air and shower water are counter-current flow like this.
(5) can be earlier before new wind enters devaporizer and return air carry out heat exchange, promptly increase a thermal energy recoverer, can remove a part of new wind load in advance like this.Through roughly calculating new wind enthalpy is reduced near the 10kJ/kg dry air.
Description of drawings
Fig. 1 is dew point indirect evaporative cooler one an example structure schematic diagram of the present invention;
Fig. 2 is the internal structure schematic diagram of first section precooling zone of the present invention;
Fig. 3 is the present invention second and the 3rd section dew point formula evaporative cooling intersegmental part structural representation that perforation is arranged;
Fig. 4 is a course of work schematic diagram of the present invention.
Among the figure, 1. primary air passage (being dry passage), 2. secondary-air passage (being wet channel), 3. interlayer, 4. groove, 5. through hole, 6. spray header, 7. cistern, 8. dividing plate, 9. pump, 10. curved channel, 11. corrugated channels.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
That shown in Figure 1 is the embodiment of a kind of dew point plate type indirect evaporation cooler provided by the invention.Comprise panel cooler movement and water supply installation, the panel cooler movement is made up of one section precooling zone and two sections cooling sections, the cooling principle of precooling zone is identical with the indirect evaporation cooling principle of prior art, but auxiliary air runner structure difference, two sections cooling section structures are identical, for the dew point formula indirect evaporation cooling section of through hole is arranged.
In precooling zone and the cooling section, the folding mutually interlayer of being made by fibrous paper 3 constitutes air duct jointly with intermediate course curved channel 10 or corrugated channel 11, and fibrous paper simultaneously is a hair side, and another side can stick thin film, makes the light face.During layout, make its hair side relative with hair side, the light face is relative with the light face, constitutes primary air passage 1 between the light face of positioned opposite, as dry passage, the water of wetted surface can not entered in the primary air passage 1.Constitute secondary-air passage 2 between the hair side of positioned opposite, hair side has water imbibition, as wet channel, utilizes the water imbibition of hair side to come wetting wall.The inside that constitutes the interlayer 3 of primary air passage 1 accompanies one deck thin plastic sheet, above rolling a plurality of horizontal flows to corrugated channel 11, augmentation of heat transfer, each small flow channels air do not mix mutually.Also there is the thin plastic sheet interlayer inside that constitutes the interlayer 3 of secondary-air passage 2, above rolling a plurality of curved channels 10.Thin plastic sheet and fibrous paper all are the transmitters of caloic exchange.
Curved channel 10 has adopted different structures at first section precooling zone with second section, the 3rd section cooling section.
In precooling zone, each curved channel 10 is that roughly perpendicular two parts are formed, and length has nothing in common with each other, and begins the most nearby from the auxiliary air outlet, and its length increases successively, as shown in Figure 2.The auxiliary air of this part is the highest primary air of precooling temperature, and is the shortest from the secondary-air passage that outlet is nearest, and passage is long more more at a distance from outlet, is for the hottest auxiliary air is discharged with the fastest speed.
In cooling section, curved channel 10 also is undulatory, but it flows to and perpendicular, the such structural design of primary air corrugated channel 11, makes primary air laterally still vertically all form thermograde.
In cooling section, be provided with a plurality of through holes 5 in the bottom of fibrous paper interlayer 3, make primary air can enter wet channel as auxiliary air by through hole 5 through the supercooling rear section.See Fig. 3, be equipped with the small sircle hole 5 of many 3～5mm below fibrous paper interlayer 3, when primary air passed through in undulatory runner, the primary air at corresponding not fibrous paper interlayer 3 places of perforation flowed forward always; And the primary air of corresponding fibrous paper interlayer 3 perforations is plugged at this section end, can not spill out, thereby air can only get out from aperture 5, having arrived secondary-air passage is in the wet channel, flow from bottom to top along the auxiliary air runner then, after carrying out the primary air of the wet exchange cooling of heat opposite side with water, discharge from the exhaust outlet on top as air draft.The curved channel 10 of this section make the part primary air after being cooled as auxiliary air, become the cooling air, enter the air themperature of two subchannels with regard to difference in the diverse location perforation like this, carrying out the hot final wet-bulb temperature that wets after exchanging with water can reduce gradually, finally be lower than dew-point temperature, the primary air that is cooled so will be near dew-point temperature.The cooling effectiveness that calculates at last is up to more than 100%.
Aspect water distribution, it is bad that single water pipe shower water enters the wetting wall effect of secondary-air passage, it is dry can causing some wall always, and some wall is the current shape always, wetting wall effect is bad will to cause auxiliary air and the wet exchange of hydro-thermal effect undesirable, the wet exchange of the heat effect of final influence and primary air.The present invention adopts the structure that goes out a groove 4 in the top fold of the interlayer 3 that constitutes primary air passage 1.When water sprays from the spray header 6 of precooling zone and the setting of cooling section top, part water can be saved bit by bit earlier in this groove, when going out groove 4, the water spill-over will be close to wall toward underflow, this method can make the whole wall of wet channel can both be by wetting well, moisture film evenly covers the evaporation wall, and the wet exchange of heat can finely be carried out.Used the method for spray header 6 and 4 two part combinations of groove to come wetting wet channel wall and make wet channel wall study of water film distribution even.
In each section of cooler movement, primary air from left to right, auxiliary air from lower to upper, primary air and auxiliary air are cross-current; Water is close to wall from top to bottom and is formed moisture film in secondary-air passage, auxiliary air and water form adverse current; Primary air and water are also realized adverse current.
In the whole system, water circuit system is from from the nearest part water supply start of air-supply, after trickle falls into cistern 7, with pump 9 water is fed to evaporative cooling the last period section, supply water toward the last period with pump from this section cistern, cistern separates with dividing plate 8 between each section again again, and Chi Zhongshui does not mix mutually.Promptly use the coldest water minimum primary air of chilling temperature first, again with the water that the heats up higher primary air of chilling temperature forward.Therefore, from whole water circuit system, water is the confession of turning left from the right side, supplies water and primary air realization adverse current.
In the structure of the present invention, cooling section can adopt more than two sections or two sections, and precooling zone can link to each other with cooling section and make a movement, also can separately become two even several sections.
Generally speaking, what enter that an auxiliary air of heat exchanger all uses is outdoor brand-new wind, helps health.If reclaim the cold of indoor discharge air and reduce new wind enthalpy, can place a thermal energy recoverer in the heat exchanger front, make outdoor new wind and indoor exhaust wind carry out heat exchange through thermal energy recoverer earlier, can make new wind enthalpy reduce the 10kj/kg dry air like this.
As shown in Figure 4, operation principle of the present invention is: after outdoor new wind and indoor exhaust wind were carried out heat exchange through thermal energy recoverer, the air draft that temperature raises entered atmosphere, first section the secondary-air passage that the new wind that temperature reduces enters heat exchanger of the present invention.Perhaps can not use thermal energy recoverer, outdoor new wind directly enters a secondary-air passage of first section of heat exchanger of the present invention.Primary air enters dry passage along wavy channel 11, and auxiliary air enters wet channel along the bending channel 10 that length has nothing in common with each other.The wet exchange of the heat temperature of carrying out auxiliary air and water reduces but absorbs primary air side heat simultaneously, and discharges rapidly.Primary air continues to enter a wavy channel 11 of second section of cooler after by precooling.When the runner downside was close to the fibrous paper interlayer 3 that has perforation, primary air passage 1 end was plugged in this section, thereby can only enter secondary-air passage 2 from through hole 5, carried out the wet exchange of heat as auxiliary air and water.The air themperature that enters through hole 5 from diverse location is different, and is low more by the back temperature more, thereby the wet-bulb temperature that carries out after heat wet to exchange with water when as auxiliary air is low more, absorbs the primary air heat simultaneously, discharges from the top at last.The air that the fibrous paper that does not have through hole is close on primary air passage 1 top moves on, and is cooled always.Third part evaporative cooling section is identical with second portion, at this moment, it is lower that shunting enters the part primary air temperature of two subchannels, so that the final wet-bulb temperature that exchanges with water of auxiliary air is near the primary air dew-point temperature, thereby makes wind pushing temperature near dew-point temperature.
Claims (6)
1. dew point plate type indirect evaporation cooler comprises panel cooler movement and water supply installation that the precooling zone that is connected and cooling section constitute, it is characterized in that,
In described precooling zone and the cooling section, Zhe Die interlayer (3) constitutes air duct jointly with intermediate course curved channel (10) or corrugated channel (11) mutually, the one side of interlayer (3) is a hair side, another side is made the light face, during layout, make its hair side relative with hair side, the light face is relative with the light face, constitute the primary air passage between the light face of positioned opposite, (1), constitute secondary-air passage (2) between the hair side of positioned opposite, and the top fold that constitutes the interlayer (3) of primary air passage (1) goes out a groove (4), the inside of the interlayer (3) of described formation primary air passage (1) accompany one deck rolling have a plurality of horizontal flows to the intermediate course of corrugated channel (11), the inside of the interlayer (3) of described formation secondary-air passage (2) accompanies the rolling intermediate course that many curved channels (10) are arranged of one deck
In precooling zone, described each curved channel (10) is that roughly perpendicular two parts are formed, and being set to of each runner, and begins the most nearby from the auxiliary air outlet, and its length increases successively;
In cooling section, described curved channel (10) is a corrugated, and it flows to vertical the setting, and the bottom of interlayer (3) is provided with a plurality of through holes (5),
Described water supply installation comprises spray header (6) and cistern (7), wherein, spray header (6) is positioned at precooling zone and cooling section top, and cistern (7) is positioned at precooling zone and cooling section below, and cistern (7) is separated by dividing plate (8) between precooling zone and cooling section.
2. according to the described cooler of claim 1, it is characterized in that, described cooling section be connect successively more than two sections or two sections.
3. according to claim 1 or 2 described coolers, it is characterized in that the material of described interlayer (3) is a fibrous paper.
4. according to claim 1 or 2 described coolers, it is characterized in that the material of described curved channel (10) is a plastic sheet.
5. according to claim 1 or 2 described coolers, it is characterized in that the material of described corrugated channel (11) is a plastic sheet.
6. according to claim 1 or 2 described coolers, it is characterized in that the diameter of described through hole (5) is 3～5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100179897A CN100480590C (en) | 2007-06-05 | 2007-06-05 | Point exposed plate type indirect evaporation cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100179897A CN100480590C (en) | 2007-06-05 | 2007-06-05 | Point exposed plate type indirect evaporation cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101078542A CN101078542A (en) | 2007-11-28 |
| CN100480590C true CN100480590C (en) | 2009-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100179897A Expired - Fee Related CN100480590C (en) | 2007-06-05 | 2007-06-05 | Point exposed plate type indirect evaporation cooler |
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| Country | Link |
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| CN (1) | CN100480590C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101761997B (en) * | 2010-01-08 | 2013-01-16 | 天津海天缘生产力促进有限责任公司 | Countercurrent dew point indirect evaporative cooler |
| CN102679480B (en) * | 2012-05-16 | 2014-08-06 | 西安工程大学 | Dew point indirect evaporation cooler with plate-tube combined structure |
| CN104864530A (en) * | 2015-05-20 | 2015-08-26 | 陈明标 | Precooling convection type evaporative refrigeration core unit |
| CN108626968B (en) * | 2018-03-21 | 2020-04-10 | 浙江大学 | Air separation precooling device and method using dew point indirect evaporative cooler |
| CN110411507B (en) * | 2019-07-11 | 2021-07-13 | 依米康科技集团股份有限公司 | Method and system for measuring and correcting optimal spraying efficiency of wet film humidification |
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2007
- 2007-06-05 CN CNB2007100179897A patent/CN100480590C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101078542A (en) | 2007-11-28 |
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Granted publication date: 20090422 Termination date: 20140605 |