KR101153646B1 - Evaporation Water Recovery Type Cooling Tower - Google Patents

Abstract

An evaporated water recovery cooling tower is provided, which cools the hot water supply but recovers the evaporated water as much as possible.

The evaporated water recovery type cooling tower may include: a housing in which hot water is scattered and contacted with suction air, and the cooled and cooled water is stored therein; and suction air compressed in the upper side of the housing and passed through the housing is evaporated water. An air compression unit including a compressor to recover the gas or supply the compressed air to the heat exchanger; And a heat exchanger disposed at an upper side of the housing and connected to a compressor and a compressed air supply pipe of the air compression unit, and cooled while passing wet air passing through the housing to recover evaporated water.

According to the present invention, by compressing and cooling the wet air discharged to the air from the cooling tower in multiple times to improve the recovery rate of the evaporated water (cooling water) to minimize the loss of cooling water, in particular to finally discharge the dry air to the outside in the cooling tower An improved effect is obtained which makes it possible to maximally suppress the external scattering of the white smoke produced.

Cooling Tower, Cooling Water, Evaporated Water, Evaporated Water Recovery, Vortex Tube, Heat Exchanger

Description

Evaporation Water Recovery Type Cooling Tower

The present invention relates to a cooling tower that cools a high-temperature supply water generated while cooling an object and recovers evaporated water as much as possible, and more specifically, compresses and cools a plurality of wet air discharged to the atmosphere from a cooling tower. Evaporative water recovery type cooling tower which improves recovery rate and minimizes the loss of cooling water, and in particular, finally releases dry air to the outside to minimize the external scattering of white smoke (white wet air) generated in the cooling tower. It is about.

In general, the cooling tower sprays high-temperature supply water generated during the cooling of an object to be cooled in the air and cools it by heat transfer to air. The cooling tower evenly sprays the hot water supply nozzle and the high-temperature supply water evenly. It is composed of a filler (piller) to be dispersed and dropped, and a water tank provided therein and storing the cooling water.

At this time, the high temperature supply water supplied is about 50 degreeC-about 80 degreeC.

In other words, the hot water supplied from the inside of the housing of the cooling tower falls through the filler to spread, and at this time, the blower in the upper part of the housing passes the outside air through the opening of the housing to suck in the hot water. Cooling is implemented.

At this time, the introduced air is discharged to the outside of the housing in the form of a gaseous wet air containing a large amount of water while passing through the hot water to be scattered, the cooling water generated by cooling the hot water is collected into the sump provided in the lower portion of the housing However, moisture (evaporative water) having a low specific gravity is discharged to the outside through the upper part of the housing.

However, in the case of most known cooling towers, there is a problem in that the wet air scattered to the upper part of the housing contains a considerable amount of water (evaporated water) but is discharged to the outside as it is not recovered.

For example, when such wet air is scattered to the outside of the housing as it is, it contains a considerable amount of moisture, and thus white lead (white wet air) is formed and scattered, and such white lead does not actually cause environmental pollution. It is misunderstood as a gas.

In other words, the white smoke generated from the cooling tower is not pure air vapor, but may cause problems depending on the location of the cooling tower. For example, if a cooling tower is installed in a residential area, residents may mistake the environment for environmental pollution. It may cause a problem, especially when adjacent to the vehicle road, white smoke is condensed in winter, causing freezing zones on the road can cause problems such as vehicle safety accidents.

However, the cooling towers known to date have been inefficient in recovering evaporated water (cooling water) through reprocessing (cooling) of such humid air, and thus suppressing the generation of white smoke by releasing dry air to the atmosphere.

For example, when cooling the hot feed water at about 10 ° C. during cooling of the cooling tower, at least about 1.6% of the used cooling water evaporates to the outside, so that the loss due to cooling water evaporation is substantially substantial.

Accordingly, the applicant of the present invention has proposed the present invention to enable the recovery of the evaporated water generated in the cooling tower and to suppress the external scattering of the white smoke as much as possible.

The present invention has been proposed in order to solve the conventional problems as described above, the object of the aspect is to improve the recovery rate of the evaporated water (cooling water) by minimizing the cooling water loss by compressing and cooling the wet air discharged from the cooling tower to the atmosphere in multiple times, In particular, the present invention is to provide an evaporated water recovery type cooling tower which makes it possible to discharge dry air to the outside and to suppress the external scattering of the white smoke generated in the cooling tower to the maximum.

As a technical aspect for achieving the above object, the present invention is a housing that is stored in contact with the intake air and the cooled cooling water is stored while the hot water is scattered therein; and. An air compression unit disposed on an upper side of the housing and including a compressor for sucking and compressing wet air passing through the housing to recover evaporated water or supply compressed air to a heat exchanger; And a heat exchanger disposed at an upper side of the housing and connected to a compressor and a compressed air supply pipe of the air compression unit, and cooled while passing the wet air passing through the housing to recover the evaporated water.
The heat exchanger includes at least one vortex tube for supplying compressed air supplied from the air compression unit and for discharging cooling air, wherein the compressed air supply pipe is connected between the compressor of the air compression unit and the vortex tube of the heat exchanger. In conjunction with each other provides an evaporated water recovery type cooling tower configured to cool the wet air through the cooling air discharged from the vortex tube.

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Preferably, the housing includes a water collecting tank in which cooling water is stored at a lower portion thereof, and an air inlet through which external air for cooling the high temperature supply water flows, and a high temperature supply water injection pipe injecting high temperature supply water into the housing. And a filler for dispersing the injected hot water.

More preferably, further comprising a wet air suction unit disposed on the upper side of the housing and provided to suction and distribute the wet air passed through the injected hot feed water, the wet air suction unit includes a blowing fan installed on the upper side of the housing do.

The compressor of the air compression unit is configured to supply compressed air to the heat exchanger while recovering evaporated water by suction compressing the wet air passing through the blower fan of the wet air suction unit disposed above the housing, wherein the air compression unit The dehumidifier may further include any one or both of a dehumidifier connected to the compressor and recovering evaporated water and a filter connected to the dehumidifier to remove foreign substances. The compressed air supply pipe may include the dehumidifier or the filter and the heat exchanger. It can be connected to this.

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Preferably, the cooling air discharge side of the vortex tube is further connected to a cooling tube provided to the heat exchanger to distribute cooling air and increase cooling efficiency of wet air passing through the heat exchanger.

More preferably, the heat exchanger includes a main body through which the wet air passes and a partition wall separating and distributing hot air discharged from the vortex tube and the cooling tube, and the cooling tube may further include a cooling fin.

Preferably, a stack provided on the upper side of the housing and directing the wet air to the air compression unit and the heat exchanger, associated with the stack and the housing, and the heat exchanger is disposed in the path, passes through the heat exchanger of the wet air and discharges the outside of the dry air. It may further include a duct provided to guide.

More preferably, the compressor and the dehumidifier provided in the air compression unit, and the heat exchanger is connected to the evaporated water recovery pipe provided to recover the evaporated water generated by the cooling of the wet air to the water collecting tank of the housing.

Such an evaporated water recovery type cooling tower of the present invention, by adiabatic compression of a part of the wet air discharged from the cooling tower to recover the evaporated water as the primary cooling water, through a heat exchanger comprising a vortex tube (Vortex Tube) using the compressed air It is possible to maximize the recovery rate of the evaporated water (cooling water) by reducing the wet air to the secondary cooling water and recovering the evaporated water.

In particular, since the cooling efficiency of wet air is high, the recovery rate of evaporated water is high, and only the dry air that does not contain moisture is discharged to the outside. To provide.

As a result, the present invention is to provide a very practical cooling tower that suppresses the emission of white smoke to remove the misunderstanding to the environmental pollutants, and also prevent the winter freezing accidents caused by white smoke.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, Figure 1 shows the overall configuration of the evaporated water recovery type cooling tower 1 according to the present invention.

That is, as shown in Figure 1, the evaporated water recovery type cooling tower 1 of the present invention, first contact with the external suction air (A1) flowing into the cooling tower from the outside while the hot feed water (W1) is scattered inside. And a housing 10 in which the cooled and cooled cooling water W2 is stored.

At this time, the housing 10 is generally a cylindrical structure (of synthetic resin molding), the housing 10 of such a cooling tower, as shown in FIG. And an air inlet 14 through which external air for cooling water (W1 in FIG. 1) is introduced.

In addition, the inner upper portion of the housing 10 is provided with an eliminator 20 to prevent the external scattering of the cooling water, the high temperature supply to spray the hot water supply to the inner side of the housing below the eliminator 20 A filler 18 for dispersing the water injection pipe 16 and the injected hot water is provided.

At this time, although not shown with a separate sign, the hot water supply pipe 16 is provided with a nozzle or a nozzle hole for evenly distributed spraying the supply water.

Therefore, the hot feed water (W1) used for cooling, which is sprayed from the hot feed water injection pipe (16), and the temperature thereof rises falls inside the housing in a state where it is evenly dispersed while passing through the filler (18). As the intake air A1 passes, the hot supply water is cooled, and the cooled cooling water W2 is stored in the sump 12 under the housing as shown in FIG. 1.

Next, as shown in FIG. 1, the cooling tower 1 of the present invention includes an upper opening portion of the housing 10 (actually, an opening portion through which the upper portion of the cylindrical housing penetrates decreases in diameter). And a wet air suction unit 70 configured to force suction of the external suction air A1 to suction and distribute the wet air A2 passing through the injected high temperature supply water W1.

The wet air suction unit 70 as described above includes a blowing fan 74 that is operated as a motor 72 installed in the upper opening portion (not shown) of the housing 10.

Therefore, when the motor 72 of the suction unit 70 is operated, the blower fan 74 arranged in a vertical state through the gear box, which is not indicated by a separate sign is operated, the external suction air (A1) is shown in FIG. As shown in FIG. 1, the hot air (A2) in a state where the moisture and the temperature are increased by passing through the hot water supplied and dispersed through the housing inlet is discharged from the housing opening.

Next, as shown in Figure 1 and 2, the cooling tower 1 of the present invention, while recovering the evaporated water (W3) contained in the wet air to the cooling tower, while the white air is not formed through the cooling of the wet air ( It is an embodiment feature to include an air compression unit 30 and a heat exchanger 50 which finally allow A3) to be discharged.

That is, the air compression unit 30 is disposed above the wet air suction unit above the housing 10 and suction-compresses the wet air A2 passing therethrough to evaporate water contained in the wet air primarily. W3) or, in particular, is provided to supply compressed air (hot) to a vortex tube (54 in FIGS. 2 and 3) included in the heat exchanger described below.

In addition, the heat exchanger 50 is disposed on the other side of the air compression unit 30 while being disposed above the wet air suction unit 70 of the housing 10, as shown in FIGS. The humid air A2 containing water while passing through the feed water is cooled to pass through and cooled to recover the evaporated water, and the compressed air (AC) supplied from the air compression unit is cooled as a cooling medium. It may be configured to be used as the cooling air (AC2) is connected to the tube 54 and is elongated in the heat exchanger and supplied to a plurality of built-in cooling tubes (56).

On the other hand, as shown in Figure 1, the stack is connected in series with the upper opening portion of the cooling tower housing 10 of the present invention to smoothly guide the wet air (A2) to the air compression unit 30 and the heat exchanger (50) 22), and a duct 24 is provided which directs the heat exchanger in the path and directs the final dry air A3 from which moisture has been removed.

Such a stack 22 and the duct 24 may actually be provided as a synthetic resin molding of the same material as the housing 10, and may be assembled.

Therefore, the air compression unit 30 and the heat exchanger 50 will be described in detail as follows.

First, as shown in FIGS. 1 and 2, the air compression unit 30 sucks and compresses the wet air A2 that has passed through the blowing fan 74 of the wet air suction unit 70 described above. Compressor 32 for supplying compressed air (AC) to the vortex tube 54 included in the heat exchanger 50 while recovering the evaporated water as described above, and further recovers the evaporated water secondaryly by being connected to the compressor 32. Dehumidifier 34 and the dehumidifier 34 may be connected to the filter 36 for removing foreign matter contained in the air.

Of course, even if the air compression unit 30 of the present invention actually includes the compressor 32, there is no problem in operating the cooling tower, and therefore, it is preferable that a compression unit including at least a compressor is provided.

Therefore, as shown in FIG. 1, a part of the wet air A2 containing a large amount of water and the temperature of the water passes through the injected hot water supplied through the blower fan 74 is included in the air while being primarily compressed in the compressor 32. The evaporated water W3 is recovered through the evaporated water recovery pipe 92 which is connected to the housing collection tank 12.

Then, the evaporated water contained in the humid air (A2) while again passing through the dehumidifier 34 is likewise recovered to the collection tank 12 of the housing through the recovery pipe 92 associated with the dehumidifier.

Then, the compressed air having a high temperature while being dried but compressed while the evaporated water is recovered while passing through the filter 36 is a vortex tube 54 provided in the heat exchanger 50 as shown in FIGS. 2 and 3. Supplied.

2 and 3, compressed air (AC) is supplied between at least one vortex tube 54 included in the heat exchanger 50 and the compressor, dehumidifier, or filter. The compressed air supply pipe 52 is connected.

2 and 3, the cooling tower heat exchanger of the present invention is connected to the cooling air discharge side of the vortex tube 54 to increase the cooling efficiency of the wet air A2 passing through the heat exchanger cooling tube 56. May be further provided.

On the other hand, the vortex tube 54, as shown in Figure 3, the screw portion (54a) that forms the vortex of the introduced high-temperature compressed air (AC), that is, one side of the body with the air rotating chamber is provided with hot air A valve 54b for regulating and discharging AC1 is disposed, and a discharge portion 54c through which cooled air AC1 is discharged is formed at the other side.

The vortex tube 54 is a hot and compressed air (AC) compressed by the compressor 32 (3 ~ 10kg / ㎠) without the use of electricity or other media (drugs) To separate and discharge the air.

That is, as shown in FIGS. 2 and 3, when the compressed air (AC) is supplied to the vortex tube 54 included in the heat exchanger 50 as in the present invention through the supply pipe 52, the screw unit (rotary chamber) 54a Rotational air, that is, the primary vortex is flowed to the control valve (54b) side, and some of the high temperature air (AC1) is approximately 30-90 ℃ The remaining high speed rotating air, which is not discharged by the control valve, is returned to the cold air outlet as it forms the secondary vortex, where the flow of the secondary vortex is lower pressure area inside the primary vortex flow. The heat is lost while passing through the cooling air, that is, cooling air (AC2) of about -40 ℃ is discharged.

Therefore, in the present invention, the compressor of the air compression unit 30 serves to condense and recover the evaporated water contained in the wet air introduced by compressing air, and at the same time, supplying the cooling air to the cooling tube 56 through the vortex tube. To this end, it also serves as a supply for supplying high pressure air to the vortex tube 54.

At this time, the heat exchanger 50 of the present invention is discharged from the body 50a, the vortex tube 54 and the cooling tube 56 through which the wet air A2 is guided to the stack 22 and the duct 24. It includes a partition wall (50b) for separating and passing the hot air (AC1) (AH) to be.

Thus, as shown in FIGS. 1 and 2, the wet air A2 that has passed through the hot water supply scattered into the blower fan 74 passes through the heat exchanger 50 and is compressed at a high temperature supplied through the compression unit. Air AC passes through the vortex tube 54, and as shown in FIG. 3, the cooling air AC2 is supplied to the elongated cooling tube 56 inside the body of the heat exchanger 50, and thus passes through the vortex tube. One cooling air is used as the cooling medium of the heat exchanger.

As a result, the wet air passing through the cooling tube 56 passes through a plurality of cooling tubes, and heat is transferred and cooled. The evaporated water W3 condensed in this process is the main body of the thermal exchanger 50 as shown in FIG. The evaporated water recovery pipe 94 associated with the 50a is recovered to the housing collection tank 12.

Therefore, since the cooling tower of the present invention recovers evaporated water from all the humid air A2 passing through the compressor 32, the dehumidifier 34, and the heat exchanger 50 of the compression unit 30, as described above, the cooling water Minimizing waste, especially since the heat exchanger 50 has a cooling tube 56 through which the cooling air discharged from the vortex tube 54 flows, the humid air cooling efficiency is considerably high. That is, the cooling tower of this invention is excellent in wet air cooling property, and the evaporated water (cooling water) recovery rate is high by that much.

On the other hand, as shown in Figure 2, preferably connected to the vortex tube 54 and a plurality of cooling tubes 56 extending and disposed inside the heat exchanger (such cooling tubes can be curved, and various Of course, it is possible to arrange in a suitable form) to further install the cooling fins (56a) to increase the heat transfer efficiency to increase the wet air cooling efficiency.

Therefore, the moisture (evaporated water) contained in the wet air (A2) passing through the heat exchanger (50) of the present invention is recovered while cooling and condensing as much as possible, and finally, dry air (A3) containing little moisture because no moisture is contained. ) Is discharged externally through the duct 24.

At this time, as shown in Figure 2, in the space between the main body 50a and the partition 50b installed in the heat exchanger 50 of the present invention is supplied to the cooling tube 56 in a cooling state, but the hot humid air (A2) is in contact with the heat The high temperature air (AH) and the high temperature air (AC1) discharged from the vortex tube (54) are collected and the high temperature air is dried together with little moisture and dried outside (A3). Discharged.

Accordingly, the evaporated water recovery type cooling tower 1 of the present invention described so far recovers a large amount of evaporated water contained in the wet air to remove waste water, and finally discharges only dry air. It is not practical to completely solve the conventional problem caused by white lead.

While the invention has been shown and described in connection with specific embodiments so far, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

1 is an overall configuration diagram showing an evaporated water recovery type cooling tower according to the present invention.

Figure 2 is a detailed view of Figure 1 showing an air compression unit and a heat exchanger for the recovery and cooling of the evaporated water of the wet air in the present invention

Figure 3 is a structural diagram showing a vortex tube included in the heat exchanger of the present invention

Explanation of symbols on the main parts of the drawings

1 .... evaporated water recovery cooling tower 10 .... housing

12 .... sump 14 .... air inlet

16 .... hot water injection pipe 18 .... filler

22 .... Stack 24 .... Duct

30 .... Air Compression Unit 32 .... Compressor

34 .... Dehumidifiers 36 .... Filters

50 .... heat exchanger 52 .... compressed air supply line

54 .... vortex tube 56 .... cooling tube

70 .... humid air suction unit 74 .... blower fan

92,94 .... evaporated water recovery pipe

Claims (9)

A housing 10 in which the hot water is scattered inside and cooled in contact with the intake air, and the cooled cooling water is stored; and the suction air compressed on the upper side of the housing 10 and passed through the housing is recovered by suction compression. Or a compressor 32 including a compressor 32 for supplying compressed air to a heat exchanger; And a heat exchanger disposed at an upper side of the housing 10 and connected to the compressor 32 of the air compression unit and the compressed air supply pipe 52 and cooled while passing the wet air passing through the housing to recover the evaporated water. 50, including; The heat exchanger (50) includes one or more vortex tubes (54) for supplying compressed air supplied from the air compression unit and for discharging cooling air, and the compressed air supply pipe (52) is a compressor of the air compression unit. An evaporated water recovery type cooling tower configured to cool wet air through cooling air discharged from the vortex tube while being connected between the vortex tube of the heat exchanger and being connected to each other. The method of claim 1, The housing 10 includes a water collecting tank 12 in which cooling water is stored at a lower portion thereof, and an air inlet 14 through which external air for cooling high temperature supply water flows in. Evaporative water recovery cooling tower, characterized in that the inside of the housing is provided with a hot feed water injection pipe 16 for injecting hot feed water and a filler (18) for dispersing the injected hot feed water. The method of claim 1, And a humid air suction unit 70 disposed above the housing 10 and provided to suction and distribute the humid air passing through the sprayed hot water supply. The humid air suction unit 70 is an evaporated water recovery type cooling tower, characterized in that it comprises a blowing fan (74) installed on the upper side of the housing (10). The method of claim 1, The compressor 32 of the air compression unit 30 sucks and compresses the wet air passing through the blowing fan 74 of the wet air suction unit 70 disposed above the housing to recover the evaporated water, and then exchanges the compressed air with the heat exchanger. Configured to feed the machine, The air compression unit 30, any one or both of the dehumidifier 34 is connected to the compressor 32 and recovers evaporated water, and the filter 36 is connected to the dehumidifier 34 to remove foreign substances. More, The compressed air supply pipe 52 is evaporated water recovery type cooling tower, characterized in that connected between the dehumidifier (34) or filter (36) and the heat exchanger. delete The method of claim 1, The cooling air discharge side of the vortex tube 54 is further connected to a cooling tube 56 provided in the heat exchanger and provided to distribute cooling air to increase cooling efficiency of wet air passing through the heat exchanger. Type cooling tower. The heat exchanger of claim 6, wherein the heat exchanger includes a main body (50a) through which wet air passes and a partition (50b) separating and circulating high-temperature air discharged from the vortex tube and the cooling tube, wherein the cooling tube further includes a cooling fin. Evaporated water recovery type cooling tower, characterized in that. The method according to any one of claims 1 to 4 and 6 to 7, A stack 22 which is provided on the upper side of the housing and guides the wet air to the air compression unit 30 and the heat exchanger 50, and is connected to the stack and the housing, and the heat exchanger is disposed in a path to pass through the heat exchanger of the wet air. And evaporated water recovery type cooling tower further comprises a duct (24) provided to guide the external discharge of the dry air. 5. The method of claim 4, The compressor or dehumidifier provided in the air compression unit 30 and the heat exchanger 50 have evaporated water recovery pipes 92 and 94 provided to recover the evaporated water generated by the cooling of the wet air to the water collecting tank of the housing. Evaporative water recovery type cooling tower, characterized in that connected.

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