KR102043300B1 - White plume prevention cooling tower with condenser type to control water distribution - Google Patents

Abstract

The present invention relates to a cooling tower for preventing the production of white smoke, and more particularly to a cooling tower to prevent white smoke by lowering the saturation of the air discharged from the inside of the cooling tower by selectively opening and closing the water supply.
It is an object of the present invention to provide a cooling tower that controls the injection of cooling water according to the mode selected by the control unit to suppress the production of white smoke. It is an object of the present invention to provide a cooling tower that can reduce the cost and manpower required to repair a damper.

Description

White plume prevention cooling tower with condenser type to control water distribution}

The present invention relates to a cooling tower for preventing the production of white smoke, and more particularly to a cooling tower to prevent white smoke by lowering the saturation of the air discharged from the inside of the cooling tower by selectively opening and closing the water supply.

In general, the cooling tower is a heat exchanger by contacting the water to be cooled with cold air introduced into the cooling tower from the outside in the filling material, so that the water is cooled by heat transfer due to temperature difference. Device.

Cooling towers have the advantage of providing a large amount of cooling water to coolant at lower temperatures, but when some of the cooling water is evaporated into water vapor and the water vapor transferred to the air is released into the atmosphere as saturated, it is mixed and diluted with the cold air around the cooling tower. In the process, it becomes supersaturated and the water vapor in the air turns into fine water droplets, which is called white smoke because it looks like white smoke.

Since white smoke forms a fog around it and entails environmental problems, research on the prevention of white lead has been made. In order to prevent white smoke, a method of lowering the relative humidity of saturated air by heating saturated air, a method of preventing white smoke using plasma, a method of lowering the relative humidity by mixing air having low relative humidity and saturated air passing through a filler and a condenser There is a method of preventing white smoke.

The present invention relates to a cooling tower to prevent white smoke using a condenser, and the prior art relates to the Republic of Korea Patent Publication No. 10-2016-0074734 ("White smoke reduction cooling tower with a dry air flow path", 2016.06.29.) Is disclosed.

However, this prior document has a problem that the water supply unit and the heat exchange unit is provided only in the region corresponding to the condenser and can not selectively control the operation of the cooling tower.

1. Republic of Korea Patent Publication No. 10-2016-0074734 ("White smoke reduction cooling tower with a dry air flow path", 2016.06.29.)

The present invention has been made to solve the above problems, an object of the present invention is to provide a cooling tower to suppress the production of white smoke by controlling the injection of the cooling water in accordance with the mode selected by the control unit.

In addition, it is an object of the present invention to provide a cooling tower in which the cost of the cooling tower and the cost of repairing the damper is reduced by eliminating dampers provided between the condensers to guide the movement of air to the condenser.

Water supply control condenser type smoke-free cooling tower according to an embodiment of the present invention, in the cooling tower that is selectively operated by the control unit 300 in the cooling efficiency rising mode or white smoke reduction mode, so that the outside air can be sucked into the cooling tower A body 100 having an external air suction unit 110 formed at a lower end thereof; An exhaust port 200 attached to an upper end of the body 100 and provided with an exhaust fan 210; A water supply unit provided inside the body 100 and configured to control supply of cooling water by a mode selected from the control unit 300; It is provided on the inside of the body 100, is installed to correspond to the cross-sectional area of the body 100 and is installed to contact the inner circumferential surface of the body 100, the air sucked from the outside air suction unit 110 and the water supply A heat exchanger 140 for exchanging heat of the coolant injected from the unit; And a condenser 150 disposed at regular intervals along an inner circumferential surface of the body 100, and provided with at least one between the exhaust port 200 and the water supply part. The water supply part includes the condenser 150. The first water supply unit 120 and the second water supply unit 130 provided in a region that does not correspond to the condenser 150 provided in the region corresponding to the) is installed, when the cooling efficiency rising mode, When the coolant is injected from the first water supply unit 120 and the second water supply unit 130 to supply the cooling water to the entire area of the heat exchange unit 140, and in the white smoke reduction mode, the first water supply unit 120. Cooling water is injected only in), and the cooling water is supplied to the heat exchanger 140 corresponding to the region in which the condenser is installed.

The water supply unit may include a first water supply unit 120 provided in a region corresponding to the condenser and a second water supply unit 130 provided in a region not corresponding to the condenser.

In addition, the cooling tower, the cooling water is injected from the first water supply unit 120 and the second water supply unit 130 in the cooling efficiency increase mode, the first water supply unit (in the smoke reduction mode) Cooling water is only sprayed 120).

In addition, the body 100 is provided between the exhaust port 200 and the condenser 150, the air mixing unit 160 for mixing the air passing through the condenser 150 and the other air; It further comprises.

In addition, the body 100 is formed at one or more positions selected from the upper end of the condenser 150 or the lower end of the condenser 150, eliminator 170 for removing moisture of the heat-exchanged air; It is characterized by including.

Water supply control condenser type white smoke prevention cooling tower of the present invention by the configuration as described above, because the cooling tower mode can be selected by the control unit can be operated in the efficiency rising mode to increase the cooling efficiency in summer when the generation of white smoke is relatively low In winter, however, the production of white smoke is relatively high, which can be operated in a mode of suppressing white smoke.

In addition, since there is no damper provided between the condenser to guide the heat exchanged air to the condenser, the cost of the cooling tower and the cost of the damper repair can be reduced, and the operator must enter the cooling tower directly to repair the damper. There is an effect that can reduce the manpower that was.

1 is a cross-sectional view of a conventional condenser type white smoke prevention cooling tower
2 is a cross-sectional view of a condenser type white smoke prevention cooling tower according to the first embodiment of the present invention.
3 is a cross-sectional view of a condenser type smoke-free cooling tower according to a second embodiment of the present invention.
4 is a cross-sectional view of a condenser type white smoke prevention cooling tower according to a third embodiment of the present invention.
5 is a schematic diagram of a cooling efficiency increase mode of a condenser type smoke-free cooling tower according to an exemplary embodiment of the present invention.
Figure 6 is a schematic view of the white smoke reduction mode of the condenser type smoke-free cooling tower according to an embodiment of the present invention
7 is a flow chart of a cooling efficiency rising mode fluid of a condenser type smoke-free cooling tower according to a third embodiment of the present invention.
FIG. 8 is a flow chart of a smoke reduction mode of a condenser type smoke prevention cooling tower according to a third exemplary embodiment of the present invention.
9 is a cross-sectional view of a condenser type white smoke prevention cooling tower according to a fourth embodiment of the present invention.

Hereinafter, an embodiment of the present invention as described above will be described in detail with reference to the accompanying drawings.

1 shows a cross-sectional view of a conventional condenser type white smoke prevention cooling tower. As shown in FIG. 1, a body 10 and an exhaust port 20 are formed, and at the lower end of the body 10, an outside air inlet 11 for sucking external dry air is formed. In addition, the body 10 is provided with a water supply unit 12 for supplying a high temperature cooling water, and between the outside air suction unit 11 and the water supply unit 12 from the outside air suction unit 11 A heat exchange part 13 is formed to exchange heat between the dry air sucked into the body 10 and the cooling water supplied from the water supply part 12.

At this time, the air heat-exchanged in the heat exchanger 13 is a saturated humidity of high humidity when discharged to the outside through the exhaust port 20 directly to the phase change by the temperature difference between the outside and the inside of the cooling tower to prevent this because At least one condenser 14 is installed on the upper inner wall of the body 10 to lower the humidity of the saturated air, and the heat-exchanged air passes through the condenser 14 to lower humidity and is discharged to the outside. Production can be suppressed.

At this time, the damper 15 for guiding the heat-exchanged air to move to the condenser 14 is provided between the condenser 14, there is a problem that often breaks because the high humidity of the air continues to touch. In order to repair the damper 15, there is also a problem that a worker has to go directly into the cooling tower to repair or replace the damper.

Water supply control condenser type white smoke prevention cooling tower of the present invention is devised to solve the problems of the conventional condenser type cooling tower, will be described in more detail with reference to FIGS.

Figure 2 shows a cross-sectional view of a condenser type white smoke prevention cooling tower according to the first embodiment of the present invention.

As illustrated in FIG. 2, the condenser type smoke-free cooling tower according to the first embodiment of the present invention is formed of a body 100 and an exhaust port 200, and the outside air dried from the outside is formed at the bottom of the body 100. The outside air suction unit 110 that sucks into the body 100 is formed. Inside the body 100, a water supply unit including a first water supply unit 120 and a second water supply unit 130 for injecting high temperature coolant, and high temperature coolant sprayed from the water supply unit and the outside air suction unit 110 A heat exchanger 140 through which the external air sucked from the heat exchanger exchanges heat is provided between the water supply unit and the external air suction unit 110.

The heat exchanger 140 is preferably provided with a plurality of panels formed with fine holes so that the coolant can stay long and the heat-exchanged air can move. If the heat exchanger 140 is provided with a panel having a fine hole, there is an effect that it is possible to widen the cross-sectional area of the heat exchange.

In addition, at least one condenser 150 is attached to the upper inner wall of the cooling tower to lower the humidity of the heat-exchanged high-humidity air.

In this case, the first water supply unit 120 may be installed in an area corresponding to the condenser 150, and the second water supply unit 130 may be installed in an area where the condenser 150 is not installed.

In addition, the water supply control condenser type smoke-free cooling tower of the present invention is characterized in that the damper is not provided between the condenser 150, unlike the conventional condenser type smoke-free cooling tower. At this time, the method for suppressing the generation of the white smoke in the water supply control condenser type white smoke prevention cooling tower of the present invention will be described later with reference to FIGS.

In addition, the upper end of the exhaust port 200 includes an exhaust fan 210 for discharging the heat-exchanged air having a low humidity through the condenser.

Figure 3 shows a cross-sectional view of a condenser type white smoke prevention cooling tower according to a second embodiment of the present invention. The condenser type smoke-free cooling tower according to the second embodiment of the present invention may further include an air mixing unit 160 at a portion where the body 100 and the exhaust port 200 contact each other. Before the air having a high humidity and dry air are discharged to the outside through the exhaust port 200 in the air mixing unit 160, the air is mixed once more and the air is relatively low in saturation state through the exhaust port 200. May be discharged.

4 is a cross-sectional view of a condenser type white smoke prevention cooling tower according to a third embodiment of the present invention, and an eliminator 170 for removing water from the air between the air mixing unit 160 and the condenser 150. ) May be further included.

In this case, the eliminator 170 is shown as being provided between the air mixing unit 160 and the condenser 150, but is not intended to limit this, by the person skilled in the art on the top of the water supply It may be installed, may be installed in the exhaust port 200, a plurality of the eliminator 170 may be installed.

5 to 8 will be described with respect to the two operating modes of the water supply control condenser type smoke-free cooling tower of the present invention.

The water supply control condenser type white smoke prevention cooling tower of the present invention may be operated in a cooling efficiency increase mode or a smoke reduction mode by selectively controlling the water supply of the water supply unit by the controller 300.

Figure 5 shows a schematic diagram of the cooling efficiency increase mode of the condenser type smoke-free cooling tower according to an embodiment of the present invention. When operating in the cooling efficiency mode, the control unit 300 allows the cooling water to be simultaneously supplied from the first water supply unit 120 and the second water supply unit 130.

Referring to the cooling efficiency rising mode fluid flow chart of the condenser type smoke-free cooling tower according to the third embodiment of the present invention of FIG.

As shown in FIG. 6, coolant is injected from the first water supply part 120 and the second water supply part 130 to the heat exchange part 140. At this time, since both the first water supply unit 120 and the second water supply unit 130 spray the cooling water that requires cooling, the cooling efficiency can be increased.

At this time, the condenser-type cooling tower of the present invention is because there is no damper for guiding the movement of the heat-exchanged air toward the condenser 150, there may be air passing through the condenser 150 and air directly toward the exhaust port 200. Can be. The air is removed through the eliminator 170, the air passing through the condenser in the air mixing unit 160 and the other air is mixed and discharged to the outside through the exhaust port (200).

Figure 7 shows a schematic diagram of the cooling efficiency increase mode of the condenser type smoke-free cooling tower according to an embodiment of the present invention. When operating in the white smoke reduction mode, the control unit 300 is supplied with cooling water only from the first water supply unit 120, and the second water supply unit 130 does not supply the cooling water.

Referring to the cooling efficiency rising mode fluid flow chart of the condenser type white smoke prevention cooling tower according to the third embodiment of the present invention of FIG. 8.

As illustrated in FIG. 8, coolant is injected only from the first water supply unit 120 disposed in the region corresponding to the condenser 150, but no coolant is injected from the second water supply unit 130 that is not.

At this time, the air passing through the heat exchange unit 140 corresponding to the region corresponding to the first water supply unit 120 is saturated air having high humidity, and corresponds to the region corresponding to the second water supply unit 130. Since the air passing through the heat exchange part 140 does not rub against the cooling water, the air of the dry air sucked from the outside air suction part 110 may be maintained as it is.

At this time, the condenser-type cooling tower of the present invention is because there is no damper for guiding the movement of the heat-exchanged air toward the condenser 150, there may be air passing through the condenser 150 and air directly toward the exhaust port 200. Can be.

In this case, when the saturated air having high humidity does not pass through the condenser 150 and is discharged to the outside, white smoke may be generated. However, since the dry air passing through the heat exchange part 140 in the region corresponding to the second water supply part 130 and the air mixing part 160 are mixed before being discharged from the exhaust port 200, the humidity is mixed. It can be discharged to the outside in a low state to suppress the production of white lead.

The control unit 300 of the water supply control condenser type cooling tower according to an embodiment of the present invention may be operated in a cooling efficiency rising mode or a white smoke reduction mode according to a user's selection, but may be applied to a temperature sensor or a humidity sensor provided separately from the cooling tower. Mode can be automatically selected and operated.

Figure 9 shows a cross-sectional view of a condenser type white smoke prevention cooling tower according to the fourth embodiment of the present invention. As illustrated in FIG. 9, the heat exchanger 140 in a region corresponding to the condenser 150 may be provided in an inclined direction.

When the water supply control white smoke prevention cooling tower of the present invention is operated in the smoke reduction mode, since the cooling water is not injected in the second water supply unit 130, the dry air state sucked from the outside may be maintained as it is.

However, when the coolant is injected from the first water supply unit 120, it may splash or flow on the heat exchange unit 140 in a region corresponding to the second water supply unit 130. At this time, the humidity of the air passing through the heat exchanger 140 in the region corresponding to the second water supply unit 130 may be increased by the splashed or flowing cooling water.

For this reason, the coolant may be inclined to the heat exchanger 140 so that the coolant may move to the heat exchanger 140 in the region corresponding to the first water supply unit 120 even if it is splashed or flows.

The technical spirit should not be interpreted as being limited to the above embodiments of the present invention. Various modifications may be made at the level of those skilled in the art without departing from the spirit of the invention as claimed in the claims. Therefore, such improvements and modifications fall within the protection scope of the present invention, as will be apparent to those skilled in the art.

10, 100 bodies
11, 110 outside air intake
20, 200 air vents
21, 210 exhaust fan
12 water supply
13, 140 heat exchanger
14, 150 condenser
15 dampers
120 first water supply
130 second water supply
160 Air Mixer
170 eliminator

Claims (5)

In the cooling tower which is selectively operated by the control unit 300 in the cooling efficiency rising mode or white smoke reduction mode,
A body 100 having an outside air suction unit 110 formed at a bottom thereof so that outside air can be sucked into the cooling tower;
An exhaust port 200 attached to an upper end of the body 100 and provided with an exhaust fan 210;
A water supply unit provided inside the body 100 and configured to control supply of cooling water by a mode selected from the control unit 300;
It is provided on the inside of the body 100, is installed to correspond to the cross-sectional area of the body 100 and is installed to contact the inner circumferential surface of the body 100, the air sucked from the outside air suction unit 110 and the water supply A heat exchanger 140 for exchanging heat of the cooling water injected from the unit;
And
A condenser 150 disposed at regular intervals along an inner circumferential surface of the body 100 and provided at least one between the exhaust port 200 and the water supply part;
Including;
The water supply unit,
The first water supply unit 120 provided in the region corresponding to the condenser 150 and the second water supply unit 130 provided in a region that does not correspond to the condenser 150 are installed separately,
In the cooling efficiency rising mode, cooling water is injected from the first water supply unit 120 and the second water supply unit 130 to supply cooling water to the entire area of the heat exchange unit 140.
When the smoke reduction mode, the cooling water is injected only from the first water supply unit 120 so that the cooling water is supplied to the heat exchange unit 140 corresponding to the region in which the condenser is installed. .
The method of claim 1, wherein the water supply unit,
A first water supply unit 120 provided in a region corresponding to the condenser, and
Second water supply unit 130 provided in a region that does not correspond to the condenser
Water supply control condenser type white smoke prevention cooling tower comprising a.
The method of claim 2, wherein the cooling tower,
When the cooling efficiency rising mode, the coolant is injected from the first water supply unit 120 and the second water supply unit 130,
Water supply unit control condenser type white smoke prevention cooling tower, characterized in that the coolant is injected only from the first water supply unit 120 in the smoke reduction mode.
The method of claim 1, wherein the body 100,
An air mixing unit (160) provided between the exhaust port (200) and the condenser (150) and mixing air passing through the condenser (150) and air not;
Water supply control condenser type white smoke prevention cooling tower further comprising a.
The method of claim 1, wherein the body 100,
An eliminator 170 formed at one or more positions selected from an upper end of the condenser 150 or a lower end of the condenser 150 to remove moisture from the heat-exchanged air;
Water supply control condenser type white smoke prevention cooling tower further comprising a.

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