CN111288598B - Dew point indirect evaporative cooler with movable water distribution function - Google Patents
Dew point indirect evaporative cooler with movable water distribution function Download PDFInfo
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- CN111288598B CN111288598B CN202010166011.2A CN202010166011A CN111288598B CN 111288598 B CN111288598 B CN 111288598B CN 202010166011 A CN202010166011 A CN 202010166011A CN 111288598 B CN111288598 B CN 111288598B
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- water
- heat exchange
- dew point
- indirect evaporative
- movable
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 156
- 238000005315 distribution function Methods 0.000 title claims abstract description 21
- 238000009826 distribution Methods 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims description 12
- 239000011358 absorbing material Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000003570 air Substances 0.000 description 53
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a dew point indirect evaporative cooler with a movable water distribution function, which comprises a movable water distributor, a cross-flow dew point indirect evaporative cooling heat exchange core body and a water collecting tank which are sequentially arranged from top to bottom, wherein the movable water distributor is connected with the water collecting tank through a circulating water hose and a circulating water pipe which are sequentially connected; the movable water distributor is matched with the pair of rails. The dew point indirect evaporative cooler with the movable water distribution function can solve the problems of uneven water distribution, easy scaling and high energy consumption of the dew point indirect evaporative cooler.
Description
Technical Field
The invention belongs to the technical field of air conditioning system equipment, and particularly relates to a dew point indirect evaporative cooler with a movable water distribution function.
Background
The evaporative cooling air conditioning technology is an environment-friendly, efficient and economic cooling mode for obtaining cold energy through heat-humidity exchange between water and air by utilizing renewable energy of dry air energy and depending on the temperature difference between dry balls and wet balls in ambient air, and has the characteristics of energy conservation, environment friendliness, economy, health and the like.
The evaporative cooler mainly has two basic forms of direct evaporative cooler and indirect evaporative cooler. The indirect evaporative cooler is generally provided with two air paths which are not contacted with each other and are divided into primary air and secondary air, wherein the primary air is produced into air which is to be cooled and mainly comes from outdoor fresh air and also can come from indoor return air; secondary air, i.e. working air, which is vaporized by contact with water, thereby reducing the temperature of the heat exchanger surfaces to cool the primary air, is mainly from outdoors and is discharged outdoors after use. The conventional dividing wall type indirect evaporative cooler can be divided into a dividing wall type indirect evaporative cooler and a dew point type indirect evaporative cooler, when the conventional dividing wall type indirect evaporative cooler is used independently, the limit of air supply temperature is the wet bulb temperature of secondary air, and because the temperature drop is limited, satisfactory air supply temperature cannot be provided for a room, the air supply temperature can be reduced to be lower than the wet bulb temperature of secondary air by adopting dew point indirect evaporative cooling, so that the temperature approaches to the dew point temperature, and the heat exchange efficiency is improved.
The dew point indirect evaporative cooler in the current market has uneven water distribution, is easy to form a 'dry point' locally, has poor heat exchange effect, and is easy to form scale locally at the 'dry point'. Meanwhile, the traditional dew point indirect evaporative cooler is of a countercurrent structure, so that the speed direction of the primary air of the dry channel after precooling enters the wet channel of the secondary air is changed, the resistance is increased, the energy consumption of a fan is increased, the efficiency is reduced, and the air supply effect is affected.
Disclosure of Invention
The invention aims to provide a dew point indirect evaporative cooler with a movable water distribution function, which can solve the problems of uneven water distribution, easy scaling and high energy consumption of the dew point indirect evaporative cooler.
The technical scheme adopted by the invention is that the dew point indirect evaporative cooler with the movable water distribution function comprises a movable water distributor, a cross-flow dew point indirect evaporative cooling heat exchange core body and a water collecting tank which are sequentially arranged from top to bottom, wherein the movable water distributor is connected with the water collecting tank through a circulating water hose and a circulating water pipe which are sequentially connected; the movable water distributor is matched with the pair of rails.
The present invention is also characterized in that,
the circulating water pipe is provided with a circulating water pump.
The circulating water pipe is provided with a water processor.
The movable water distributor comprises a water distribution pipe and a plurality of nozzles arranged on the water distribution pipe, wherein two rollers are arranged on the water distribution pipe, one roller is matched with one rail for use, and the water distribution pipe is connected with the water collection tank through a circulating water hose and a circulating water pipe which are connected in sequence.
The cross-flow dew point indirect evaporative cooling heat exchange core comprises a plurality of dry channels and wet channels which are alternately arranged at intervals, a partition plate is arranged between each dry channel and each wet channel, each dry channel is divided into a plurality of heat exchange units a with the same size, each wet channel is divided into a plurality of heat exchange units b with the same size, each heat exchange unit a and each heat exchange unit b are air flow channels, the heat exchange units a are parallel to the movable water distributor, and the heat exchange units b are perpendicular to the movable water distributor; a plurality of through holes are arranged on the partition plate between the part of the heat exchange units a below the dry channel and the heat exchange units b of the wet channel corresponding to the part of the heat exchange units a below the dry channel, and all the through holes are obliquely arranged.
Two through holes are arranged on the partition plate of one heat exchange unit b.
The heat exchange units b of the wet channel are staggered at the through holes, and the part of each heat exchange unit b below the through holes is shifted to one side for a certain distance to form an air flow passage with two 90-degree right angles.
The wet channel is made of hydrophilic material, and the heat exchange unit b is internally provided with water absorbing material.
The water-absorbing material is sponge, water-absorbing resin or silica gel.
The beneficial effects of the invention are as follows:
(1) The dew point indirect evaporative cooler with the movable water distribution function can effectively improve the uniformity of water distribution by adopting a movable water distribution mode, is favorable for forming a uniform water film on the wall surface of a wet channel, avoids forming a 'dry point' locally, and washes the wall surface of the wet channel by water sprayed in a left-right reciprocating manner, thereby reducing the accumulation of scale and enhancing the heat exchange efficiency.
(2) The dew point indirect evaporative cooler with the movable water distribution function equally divides the dry channel and the wet channel into heat exchange units with the same size, is beneficial to uniform distribution of primary air and secondary air in the flow channel and increases the heat exchange surface area.
(3) According to the dew point indirect evaporative cooler with the movable water distribution function, the heat exchange units b of the wet channels are staggered front and back at the through holes to form a right angle of 90 degrees, so that secondary air of the pre-cooling section flows to the heat exchange unit b which is adjacent to the front, the heat exchange temperature difference between primary air and secondary air is increased, a larger temperature gradient is formed, and the indirect evaporative cooling efficiency is improved.
(4) According to the dew point indirect evaporative cooler with the movable water distribution function, the wet channel is made of hydrophilic materials, and the water absorbing materials are arranged in the heat exchange unit b, so that the heat exchange efficiency of the cross-flow dew point indirect evaporative cooler is greatly enhanced.
(5) According to the dew point indirect evaporative cooler with the movable water distribution function, a part of primary air enters the wet channel, so that the wet bulb temperature of secondary air is continuously reduced, the temperature of the primary air is reduced, and the produced cold air approaches to the dew point temperature of inlet air, so that the sub-wet bulb temperature is reached.
Drawings
FIG. 1 is a schematic diagram of a dew point indirect evaporative cooler with mobile water distribution function according to the present invention;
FIG. 2 is a schematic plan view of a mobile water distribution device of a dew point indirect evaporative cooler with mobile water distribution function according to the present invention;
FIG. 3 is a schematic diagram of a mobile water distribution device of a dew point indirect evaporative cooler with mobile water distribution function according to the present invention;
FIG. 4 is a schematic plan view of a dry and wet path of a dew point indirect evaporative cooler with mobile water distribution;
FIG. 5 is a schematic diagram of the dry and wet channel structure of a dew point indirect evaporative cooler with mobile water distribution.
In the figure, a dry channel, a water collecting tank, a wet channel, a through hole, a circulating water pipe, a circulating water hose, a movable water distributor, a roller, a track, a circulating water pump, a water processor, a nozzle, a water distributing pipe, a heat exchange unit and a heat exchange unit.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The invention relates to a dew point indirect evaporative cooler with a movable water distribution function, which is shown in figures 1-5, and comprises a movable water distributor 7, a cross-flow dew point indirect evaporative cooling heat exchange core and a water collecting tank 2 which are sequentially arranged from top to bottom, wherein the movable water distributor 7 is connected with the water collecting tank 2 through a circulating water hose 6 and a circulating water pipe 5 which are sequentially connected; the movable water distributor is characterized by further comprising a pair of rails 9 fixed on the unit shell, and the movable water distributor 7 is matched with the pair of rails 9.
In the cross-flow dew point indirect evaporative cooler, except the cross-flow dew point indirect evaporative cooling heat exchange core, other parts form a movable water distribution device of the indirect evaporative cooler, as shown in figures 2-3.
The circulating water hose 6 can freely and flexibly reciprocate along with the movable water distributor 7.
The circulating water pipe 5 is provided with a circulating water pump 10.
The water circulating pipe 5 is provided with a water treatment device 11 to prevent the nozzle 12 from being blocked.
The movable water distributor 7 comprises a water distribution pipe 13 and a plurality of nozzles 12 arranged on the water distribution pipe, two rollers 8 are arranged on the water distribution pipe 13, one roller 8 is matched with one rail 9 for use, and the water distribution pipe 13 is connected with the water collecting tank 2 through a circulating water hose 6 and a circulating water pipe 5 which are connected in sequence.
As shown in fig. 4-5, the cross-flow dew point indirect evaporative cooling heat exchange core comprises a plurality of dry channels 1 and wet channels 3 which are alternately arranged at intervals, a partition plate is arranged between the dry channels 1 and the wet channels 3,
each dry channel 1 is divided into a plurality of heat exchange units a15 with the same size, each wet channel 3 is divided into a plurality of heat exchange units b14 with the same size, each heat exchange unit a15 and each heat exchange unit b14 are air flow channels, the heat exchange units a15 are parallel to the movable water distributor 7, and the heat exchange units b14 are perpendicular to the movable water distributor 7; a plurality of through holes 4 are arranged on the partition plate between the partial heat exchange unit a15 below the dry channel 1 and the heat exchange unit b14 of the wet channel 3 corresponding to the partial heat exchange unit a, and all the through holes 4 are obliquely arranged.
Two rows of through holes are arranged on the partition plate in parallel from bottom to top along the diagonal line in the primary air inlet direction, two through holes 4 are also arranged on the partition plate of each corresponding heat exchange unit b14, and the two through holes 4 are arranged on one diagonal line.
The heat exchange units b14 of the wet channel 3 are staggered at the through holes 4, the part of each heat exchange unit b14 below the through holes 4 is shifted to one side for a certain distance to form an air flow channel with two 90-degree right angles, the structure causes turbulence of secondary air, better heat-moisture exchange between the secondary air and a water film occurs, and the high efficiency of the dew point indirect cooler can be obtained by combining the optimal air flow speed.
The wet channel 3 is made of hydrophilic material, and the heat exchange unit b14 is internally provided with water absorbing material, and the water absorbing material is sponge, water absorbing resin or silica gel.
With the mobile water distributor 7, the reciprocating motion causes each heat exchange unit b14 in the wet channel 3 to cover a uniform water film instead of a flowing water column. On the one hand, if the amount of the sprayed water is excessive, larger water columns can be formed on the wall surface of the part of the heat exchange unit b14 of the wet channel 3, so that the flow of secondary air in the wet channel 3 is blocked; on the other hand, if the amount of water sprayed is too small, some heat exchange unit b14 walls cannot be wetted to form a dry spot, and the local temperature difference can cause poor heat flow to affect the efficiency of the cooler.
The movable water distributor 7 forms a certain period through reciprocating motion, which is equivalent to intermittent water distribution, so that a water film formed on the surface of each heat exchange unit b14 in the wet channel 3 can be fully evaporated in the period of intermittent water distribution, and the heat and humidity exchange of secondary air and the water film is facilitated.
The invention relates to a dew point indirect evaporative cooler with a movable water distribution function, which comprises the following working processes:
according to the working process of the water distribution system: the water in the water collecting tank 2 is filtered by the water processor 11, is conveyed to the movable water distributor 7 through the circulating water pipe 5 and the circulating water hose 6 under the action of the circulating water pump 10, and is provided with the water distributor with the idler wheels 8 and moves back and forth on the track 9, so that spray water is uniformly distributed in the wet channel 3 of the cross-flow dew point indirect evaporative cooling heat exchange core, the spray water flows downwards by gravity to wet the surface of the wet channel 3 to form a uniform water film, heat and moisture exchange is carried out with secondary air of the wet channel 3, direct evaporative cooling occurs, and the unevaporated water drops into the lower water collecting tank 2 under the action of gravity, so that the circulation process of the spray water is realized.
The working process of the wind system is as follows: the primary air enters the heat exchange unit a15 of the dry channel 1 of the dew point indirect evaporative cooler, firstly, the primary air is subjected to temperature difference heat exchange with the partition plate of the wet channel 3, precooling is carried out on the primary air, wherein part of the primary air enters the heat exchange unit b14 of the wet channel 3 to become secondary air through the through holes 4 on the partition plate of the heat exchange unit a15, then, the secondary air is subjected to heat-humidity exchange with the water film formed on the surface of the heat exchange unit b14 of the wet channel 3, the temperature of the water film is reduced, the cold energy is transferred to the primary air in the heat exchange unit a15 of the dry channel 1 through the wall surface of the heat exchange unit b14 of the wet channel 3, the primary air is subjected to equal humidity cooling, and thus, the circulation is carried out, the greater the primary air is precooled to be mixed with the secondary air through the through holes 4 to be used as the secondary air, the reference temperature for heat-humidity exchange with the water film is lower, and finally, the primary air in the heat exchange unit b14 of the wet channel 3 is cooled to be close to the dew point temperature.
The dew point indirect evaporative cooler with the movable water distribution function effectively improves the uniformity of water distribution by adopting a movable water distribution mode, avoids the formation of a dry point at the part of the cross-flow dew point indirect evaporative cooler, reduces the accumulation of scale, strengthens the heat transfer of the cross-flow dew point indirect evaporative cooler by reasonably optimizing the dry and wet channel structures of the cross-flow dew point indirect evaporative cooler, and improves the heat exchange efficiency.
Claims (3)
1. The dew point indirect evaporative cooler with the movable water distribution function is characterized by comprising a movable water distributor (7), a cross-flow dew point indirect evaporative cooling heat exchange core body and a water collecting tank (2) which are sequentially arranged from top to bottom, wherein the movable water distributor (7) is connected with the water collecting tank (2) through a circulating water hose (6) and a circulating water pipe (5) which are sequentially connected; the movable water distributor is characterized by further comprising a pair of rails (9) fixed on the unit shell, and the movable water distributor (7) is matched with the pair of rails (9);
a circulating water pump (10) is arranged on the circulating water pipe (5);
a water processor (11) is arranged on the circulating water pipe (5);
the movable water distributor (7) comprises a water distribution pipe (13) and a plurality of nozzles (12) arranged on the water distribution pipe, two rollers (8) are arranged on the water distribution pipe (13), one roller (8) is matched with one rail (9) for use, and the water distribution pipe (13) is connected with the water collection tank (2) through a circulating water hose (6) and a circulating water pipe (5) which are connected in sequence;
the cross-flow dew point indirect evaporative cooling heat exchange core comprises a plurality of dry channels (1) and wet channels (3) which are alternately arranged at intervals, a partition plate is arranged between each dry channel (1) and each wet channel (3), each dry channel (1) is divided into a plurality of heat exchange units a (15) with the same size, each wet channel (3) is divided into a plurality of heat exchange units b (14) with the same size, each heat exchange unit a (15) and each heat exchange unit b (14) are air flow channels, the heat exchange units a (15) are parallel to the movable water distributor (7), and the heat exchange units b (14) are perpendicular to the movable water distributor (7); a plurality of through holes (4) are arranged on a partition plate between a part of heat exchange units a (15) below the dry channel (1) and a heat exchange unit b (14) of the wet channel (3) corresponding to the heat exchange units, and all the through holes (4) are obliquely arranged;
two through holes (4) are formed in the partition plate of one heat exchange unit b (14);
the heat exchange units b (14) of the wet channel (3) are staggered at the through holes (4), and the part of each heat exchange unit b (14) below the through holes (4) is shifted to one side for a certain distance to form an air flow channel with two 90-degree right angles.
2. The dew point indirect evaporative cooler with a mobile water distribution function according to claim 1, wherein the wet channel (3) is made of hydrophilic materials, and a water absorbing material is arranged in the heat exchange unit b (14).
3. The dew point indirect evaporative cooler with a mobile water distribution function according to claim 2, wherein the water absorbing material is sponge, water absorbing resin or silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010166011.2A CN111288598B (en) | 2020-03-11 | 2020-03-11 | Dew point indirect evaporative cooler with movable water distribution function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010166011.2A CN111288598B (en) | 2020-03-11 | 2020-03-11 | Dew point indirect evaporative cooler with movable water distribution function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111288598A CN111288598A (en) | 2020-06-16 |
| CN111288598B true CN111288598B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010166011.2A Active CN111288598B (en) | 2020-03-11 | 2020-03-11 | Dew point indirect evaporative cooler with movable water distribution function |
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| CN (1) | CN111288598B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111928542A (en) * | 2020-07-29 | 2020-11-13 | 四川迈铁龙科技有限公司 | A high-pressure spray device for high-efficient evaporative condenser |
| CN116658987B (en) * | 2023-07-07 | 2024-05-24 | 成都雅思欧科技有限公司 | Capillary evaporation air conditioner |
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|---|---|---|---|---|
| JP2008101890A (en) * | 2006-10-19 | 2008-05-01 | Earth Clean Tohoku:Kk | New indirect type evaporative cooling unit |
| CN202216613U (en) * | 2011-07-22 | 2012-05-09 | 西安工程大学 | Intermittent water distribution device for evaporative cooler |
| CN103245017A (en) * | 2013-04-12 | 2013-08-14 | 西安工程大学 | Closed cross-flow plate-fin dew-point indirect evaporative cooling outdoor unit |
| CN205402997U (en) * | 2016-01-15 | 2016-07-27 | 西安工程大学 | Use plate -fin indirect evaporative cooler's evaporative cooling air -conditioning unit |
| CN106595355A (en) * | 2016-12-08 | 2017-04-26 | 澳蓝（福建）实业有限公司 | Indirect evaporative cooler |
| CN212108847U (en) * | 2020-03-11 | 2020-12-08 | 西安工程大学 | Cross-flow dew point indirect evaporative cooler with movable water distribution |
-
2020
- 2020-03-11 CN CN202010166011.2A patent/CN111288598B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008101890A (en) * | 2006-10-19 | 2008-05-01 | Earth Clean Tohoku:Kk | New indirect type evaporative cooling unit |
| CN202216613U (en) * | 2011-07-22 | 2012-05-09 | 西安工程大学 | Intermittent water distribution device for evaporative cooler |
| CN103245017A (en) * | 2013-04-12 | 2013-08-14 | 西安工程大学 | Closed cross-flow plate-fin dew-point indirect evaporative cooling outdoor unit |
| CN205402997U (en) * | 2016-01-15 | 2016-07-27 | 西安工程大学 | Use plate -fin indirect evaporative cooler's evaporative cooling air -conditioning unit |
| CN106595355A (en) * | 2016-12-08 | 2017-04-26 | 澳蓝（福建）实业有限公司 | Indirect evaporative cooler |
| CN212108847U (en) * | 2020-03-11 | 2020-12-08 | 西安工程大学 | Cross-flow dew point indirect evaporative cooler with movable water distribution |
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| CN111288598A (en) | 2020-06-16 |
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