JPH02154985A - Ac/dc type cooling tower provided with white smoke preventing function - Google Patents

Abstract

PURPOSE:To permit the sufficient prevention of white smoke by a method wherein a tubular body having a special configuration is provided as the guiding element of laminar flow of wet air and dry air while a plurality of louver type guide plates are arranged in parallel at the air discharging port of the tubular body. CONSTITUTION:The title cooling tower is provided with air intakes 16, opposed to the air outlet ports 15 of air passages 14 for a dry type heat exchanger 11 and a plurality of dry and wet air mixing tubular bodies B are arranged with proper spaces so as to be projected horizontally below an air discharging port 12 while the inside of the tubular bodies B are guiding chambers 19 for discharging dry air. Guide vanes 60 for guiding dry air are arranged in parallel to each other at an air discharging port 18. The dry air, flowing into the guide chambers 19 for discharging dry air, is guided by the guide vanes 60 toward the tip ends of respective tubular bodies while maintaining the condition of laminar flow substantially and arrives at a fan 13, then, is mixed with the flow of wet air, which ascends through a vertical passage formed among the tubular bodies B, whereby mixed air, regulated in the relative humidity thereof, is generated under the condition of laminar flow and mist will never be accompanied. According to this method, the air is discharged to the outside of the cooling tower without generating white smoke.

Description

DETAILED DESCRIPTION OF THE INVENTION A.Objective of the invention (industrial application field) This invention is characterized in that dry heat exchangers are hierarchically arranged above a wet heat exchanger, and moist air passing through the wet heat exchanger is This invention relates to a cross-flow type cooling tower having a white smoke prevention function, in which a mixing chamber for mixing dry air that has passed through a dry heat exchanger and a mixing chamber is formed on the primary side of the same exhaust port.

(Prior art) This type of cooling tower is disclosed in Japanese Patent Application Laid-open No. 57-92688, Japanese Patent Application Publication No. 61-175480, and Japanese Patent Publication No. 63-4503.
No. 6 has already been released and is proving effective in preventing white smoke in the early stages.

(Issues to be Solved by the Invention IM) Among such prior art, in the cooling tower described in Japanese Patent Application Laid-Open No. 57-92688, a horizontal damper and a vertical damper are used to perform dry heat exchange so as to surround a mixing chamber. The damp air that has passed through the horizontal damper and the dry air that has passed through one vertical damper are mixed in this mixing chamber by alternately intersecting each other,
When the blower installed at the cooling tower exhaust port is operated, the dry air flows into the mixing chamber through a vertical damper and a dry heat exchanger placed closer to the blower, and as soon as it leaves this vertical damper, it is immediately directed upward to the exhaust port. The amount of air that intersects with the moist air that has passed through the horizontal damper is very small, and the air is exhausted from the exhaust port before the dry air and moist air are sufficiently mixed in this mixing chamber, resulting in a completely dry air. The reality is that they are not effective in preventing white smoke.

Similarly, the cooling tower described in JP-A No. 61-175480 has the same drawbacks as those described in the publication, and its white smoke prevention effect is somewhat lacking.

Next, the mixing device for a cooling tower described in the above-mentioned Japanese Patent Publication No. 63-45036 differs from the above-mentioned two prior arts in that the cross-section V that guides the dry air blown out from the dry heat exchanger into the mixing chamber A channel or U-shaped channel is arranged at an angle from the lower end of the dry heat exchanger to the center of the exhaust outlet, which acts as a baffle against the upward movement of moist air and The air flows toward the exhaust port while being diffused, and due to the action of this channel, moist air and dry air are mixed at the bottom of the exhaust port.
As the blower power increases5, as this channel has a V-shaped or U-shaped cross section as mentioned above, most of the dry air blown out from the dry heat exchanger is transferred to the exhaust side by the blower immediately after blowing out. I was drawn to the above 2.
Similar to the cooling towers of the two prior art technologies, the dry air and moist air are exhausted from the exhaust port before they are sufficiently mixed in the mixing chamber, and there is a concern that the complete white smoke prevention effect cannot be achieved. . Furthermore, there is not enough space between the bottom of the blower and the top of the air outlet of the dry heat exchanger.
In particular, the dry air discharged from the upper end of the air outlet cannot be sufficiently sucked into the exhaust port, and is exhausted without being sufficiently mixed with humid air at the periphery of the exhaust port. If the dry heat exchanger is made of synthetic resin, the heat exchange efficiency is slightly inferior to that of metal fins, so the dry air does not reach a high temperature, so it is desirable to have a uniform mixing degree. The above-mentioned conventional technology, which has several drawbacks, cannot meet such demands.

This invention solves the drawbacks of the prior art by utilizing a specially shaped cylinder as a laminar flow guiding element for humid air and dry air, so that even a cooling tower incorporating a synthetic resin dry heat exchanger as described above is sufficient. The purpose of this project is to provide the market with a cross-flow cooling tower base that can prevent white smoke.

Furthermore, the present invention provides a straight air blower with a white smoke prevention function, in which several louver-shaped guide plates are arranged in parallel at the air outlet of the cylinder body to guide the flow of dry air and allow it to reach the center of the blower. The purpose is to provide AC cooling towers to the market.

Configuration of the Invention (Means for Solving the Problem) In order to achieve the above object, synthetic resin dry heat exchangers are hierarchically arranged on the upper part of the wet heat exchanger of the present invention, and the wet heat exchanger is arranged in a hierarchical manner. In a cross-flow cooling tower with a white smoke prevention function, a blower is installed at the exhaust port for exhausting a mixture of moist air that has passed through a dry heat exchanger and dry air that has passed through a dry heat exchanger to the atmosphere. It has an air intake port facing the air outlet of the air passage of the container, and a plurality of cylinders for mixing wet and dry air are arranged at intervals and project horizontally below the exhaust port. The air intake height corresponds to the total height of the air outlet, and the tip of each cylinder is a closed end, and the upper wall of the cylinder has an air outlet from the air outlet side to the tip side. The outlet is open, and the inside of the cylinder serves as a dry air discharge guide chamber, and the air outlet has several louver-shaped guide plates that guide dry air toward the tip of the cylinder air intake. They are arranged in parallel at intervals from the tip to the tip.

Further, in order to achieve the above object, in the cross flow type cooling tower, each of the guide plates may be an air volume adjustable guide vane.

Moreover, in order to achieve the above-mentioned object, in the cross-flow type cooling tower, it is preferable that the cylindrical body is made of synthetic resin II (particularly made of FRP).

In addition, in order to achieve the above object, in the cross-flow cooling tower, the upper wall of the cylindrical body in which the air outlet of the cylindrical body is perforated is connected from the upper end of the air outlet of the dry heat exchanger to the air blower. The bottom of the cylindrical body is tilted downward and away from the blades of the blower, and the bottom of the cylinder is tilted upward from the upper end of the air outlet toward the bottom of the blower in the opposite direction to the upper wall. It is desirable to have a receiver for suction of dry air and collection of water droplets.

In addition, in order to achieve the above object, in the cross-flow cooling tower, the dry heat exchanger includes an air passage through which air flows in a horizontal direction, and a circulating cooling system formed between the air passages and through which circulating cooling water flows downward. a downstream water flow passage, these two passages are partitioned by a partition plate made of synthetic resin, and a circulating cooling water supply section opened to the outside is formed on the upstream side of the circulating cooling water downstream passage; It is preferable that a discharge portion opened to the outside is also provided on the downstream side of the liquid flow passage, and most of the width of this liquid flow passage is a flowing liquid slowing portion.

(for production) The operation of the invention configured as described above will be explained next.

Circulating cooling water supplied from a refrigerator, etc. is distributed and flows down from the top of the synthetic resin dry heat exchanger, and during this flowing down, outside air is drawn into the air passage of the dry heat exchanger from the outside and this circulating cooling water. After indirectly exchanging heat with the circulating cooling water to cool the circulating cooling water, the circulating cooling water is sprayed onto the wet heat exchangers arranged hierarchically below the dry heat exchanger, and is then flowed down the surface of the wet heat exchanger. The circulating cooling water is brought into direct contact with outside air, and the circulating cooling water is cooled to a predetermined temperature by the action of latent heat, collected in a lower water tank of a cross-flow cooling tower, and circulated to a load section such as a refrigerator for use. After raising the temperature again, it is supplied again to the dry heat exchanger.

On the other hand, the humid air whose relative humidity has been increased by heat exchange in the wet heat exchanger passes through the wet heat exchanger and rises toward the exhaust port due to the suction action of the blower provided at the exhaust port.

In addition, the dry air whose relative humidity does not change due to heat exchange in the dry heat exchanger is also subjected to the suction action of the blower, and most of the dry air is transferred from the air outlet of the air passage of the dry heat exchanger to each cylindrical body. At the same time as the dry air flows into the discharge guide chamber through the air intake port, a certain amount of the dry air is discharged between adjacent cylinders.

Next, the dry air that is dispersed and distributed in the dry air discharge guide chamber of each cylinder is directed toward the center of the exhaust port from the gap between the louver plates arranged at the air discharge port bored in the upper wall of each cylinder. While maintaining a laminar flow state, the dry air is guided by a louver-shaped guide plate in the direction of each cylindrical light end object and released, and the emitted dry air reaches the center of the exhaust port and between the opposing cylindrical bodies. Together with a small amount of the dry air discharged between adjacent cylindrical bodies, the dry air is uniformly distributed and sucked over the entire area of the exhaust port.

At this time, when the dry air passes between the louver plates, the static pressure is approximately 3
The air volume discharged from this air discharge port per unit time tends to increase compared to the case without a louver-shaped guide plate, and at the same time, the vertical passage formed between the adjacent cylinders is A stream of moist air rises from below.

Therefore, instead of creating turbulence, the humid air flow and the dry air flow reach the blower in a parallel laminar flow state, and the dry air is finely distributed among each other by the rotating blades of the small-power blower. The flow of humid air is agitated and vented to the atmosphere as a relative humidity-adjusted mixed air without fog. In other words, air is exhausted outside the cooling tower without producing white smoke.

If the guide plate is located between guide vanes that adjust the air volume, the guide vanes are used to close the air outlet in order to block heat exchange in the dry heat exchanger during the summer when there is no risk of white smoke. The inclination angle of the guide vanes is changed to adjust the gap between the guide vanes and the discharge amount depending on the atmospheric humidity when the guide vanes are sealed or when white smoke is generated in winter.

The cylindrical body may be made of synthetic resin.

The dry heat exchanger includes an air passage that allows air to flow in a horizontal direction;
A circulating cooling water downstream passage is formed between the air passages and allows the circulating cooling water to flow downward. A circulating cooling water supply section that is open to the outside is formed, and a discharge section that is open to the outside is also provided on the downstream side of the liquid flow passage, and most of the width of this liquid flow passage is.

In the case where the cooling water is provided as a slow flowing liquid section, the circulating water supplied from the load section sequentially flows down from the supply section through the slow flowing liquid section of the circulating cooling water flow passage, and It is discharged from the discharge part to the outside and is dispersed onto the wet heat exchanger below.

(Example) Representative embodiments of the invention will now be described.

In FIG. 1, A indicates that synthetic resin dry heat exchangers 11 are arranged hierarchically above a wet heat exchanger 10, and the moist air that has passed through the wet heat exchanger 10 and the dry heat exchanger 11 are arranged in a hierarchical manner. This is a cross-flow type cooling tower having a white smoke prevention function, in which a blower 13 is provided at an exhaust port 12 that exhausts mixed dry air into the atmosphere, and the air outlet of the air passage 14 of the dry heat exchanger 11 is Air intake port 1 facing 15
6, and a plurality of cylinders B for mixing dry and wet air are arranged at intervals so as to protrude horizontally below the exhaust port 12, and the air intake height of the cylinders B is equal to the height of the air outlet 12.
The tip of each cylinder B is a closed end 17, and an air outlet 18 is opened in the upper wall of the cylinder B from the air outlet 15 side to the tip side. Yes, I did.

The interior of the cylinder B serves as a dry air discharge guide chamber 19.

This air discharge port 18 includes air from the center of the exhaust port to each part body B.
At least one movable guide vane 60, which is a type of louver-shaped guide plate that guides dry air toward the tip of the
Preferably, three of them are arranged in parallel with a predetermined gap from the air intake 016 of the cylinder 13 to its tip 17 (see FIG. 10).

The upper wall of the cylindrical body B, in which the air outlet 18 of the cylindrical body B is formed, extends from the upper end of the air outlet 15 of the dry heat exchanger 11 to the lower part of the blower 13 so as to separate from the blades of the blower 13. The bottom part 20 of the cylindrical body B is inclined upward from the lower end of the air outlet 15 toward the bottom of the air blower VIi 13 in the opposite direction to the upper wall, and a water drip pan may be provided as a part. , desirable for suction of dry air and collection of water droplets.

The cylinder B is entirely made of synthetic resin such as FRP.

The dry heat exchanger 11 has an air passage 30 through which air flows horizontally, and a circulating cooling water flow passage 31 formed between the air passages 30 and through which circulating cooling water flows downward, and these two passages 30. 31 are partitioned by partition plates 33 and 34 made of synthetic resin, and a circulating cooling water supply section 35 opened to the outside is formed on the upstream side of the circulating cooling water flow passage 31, and A discharge part 36 that opens to the outside is also provided on the side, and most of the width of this flow passage 31 is
It is provided as a flowing liquid slowing section 31a.

The flowing liquid slowing part 31a is arranged adjacent to the vertical overflow channel 38 via at least one vertical seal part 37, and the upper end of the vertical seal part 37 is in the shape of a weir 39, Through this weir 39, the overflow channel 38 and the uppermost liquid reservoir portion 31b in the flowing liquid slowing section 31a
are interconnected.

The dry heat exchanger 11 is made up of a plurality of indirect heat exchangers C each consisting of a thin and flat hollow body 40 arranged in parallel, and the air passage 30 is formed between adjacent hollow bodies. The circulating cooling water flow passage 31 is formed in the hollow body 40, the circulating cooling water supply section 35 is provided at the upper edge of the hollow body 40, and the discharging section 36 is formed at the lower edge of the hollow body 40. The heat exchanger C is a blow- or vacuum-formed product, and an overflow channel 38 is provided along one or both edges of the hollow body 40.

The bent liquid slowing section 31a is separated into two to four series of fluid passages by a vertical partition seal section 31b at its center (see FIGS. 3 and 5).

(Operation of the embodiment) The operation of the embodiment is similar to that of the invention, and the operation of the embodiment is unique to the dry heat exchanger 11 in which the cylinder B is attached to the air outlet 15 as described above. is as follows.

That is, even if the downstream liquid slowing section 31a becomes clogged during use, the circulating cooling water will not overflow from the supply section 35, and a portion of the circulating cooling water will flow over the base 39 to the overflow channel 3.
8 and then flows down into the discharge section 3 together with the remaining @ ring cooling water that flows down inside the flowing liquid slow speed section 31a.
6 to the outside and sprayed onto the wet heat exchanger 10 below.

(Other examples) The heat exchanger l[ has the following structure.

The two adjacent heat exchange partition plates 51 and 52 forming both walls of one air passage 50 are formed integrally with each other over the entire width of their upper ends to form a single heat exchanger unit 53.

A plurality of heat exchanger units 53 are arranged parallel to each other in an upright manner in the same case D, and one #i ring cooling water flow passage 54 is formed between adjacent heat exchanger units 53. The heat exchanger 11 is constructed by connecting and disposing the heat exchanger units 53 adjacent to each other on the surface where the downstream passage 54 is formed so that they can be engaged and separated (see FIG. 4).

All of the heat exchange partition plates 51 and 52 are turned upside down and integrally formed over the entire width of their upper ends.

The downstream passage 54 is connected to the heat exchange partition plate 5 of the adjacent heat exchanger unit 53 forming both side wall surfaces of the downstream passage 54.
1.52 horizontal baffle portions 55 bulging inwardly and outwardly are mutually fitted and abutted to form the flow passage 54 which is hierarchically zigzag.

The heat exchange partition plate 51.5 of the adjacent heat exchanger unit 52 is a means for separably engaging the heat exchanger units 52 adjacent to each other on the surface forming the liquid flow passage 54.
Concave and convex portions are formed over the entire height on both side edges of 2 and can freely engage with each other.
Both edges of are sealed.

The operation of the dry heat exchanger 11 in this embodiment is unique as follows.

That is, even if dust and microorganisms adhere to the walls of the downstream passageway 54 and become so clogged that they interfere with the flow of circulating water, the downstream passageway 54 with this clogging will not be formed. adjacent heat exchanger unit 5
By removing the engagement between 3, these heat exchanger units 5
The heat exchange partition plate 51.5 of the adjacent heat exchanger unit 53, which formed the inner surface of the downstream passage 54, was disconnected from the heat exchange partition plate 51.5 of the adjacent heat exchanger unit 53.
The uneven surface in Step 2 is exposed to the outside and cleaned.

C0 Effects of the Invention Each of the cylindrical bodies in the cross-flow cooling tower with a white smoke prevention function according to this specific invention has an air intake port facing the air outlet of the air passage of the dry heat exchanger, A plurality of cylinders for mixing wet and dry air are arranged at intervals to extend horizontally below the exhaust port, and the air intake height of the cylinders corresponds to the total height of the air outlet, The tip of each cylinder is a closed end, and an air outlet is opened in the upper wall of the cylinder from the air outlet side to the tip side, and the inside of the cylinder serves as a dry air discharge guide chamber. This air outlet has several louver-shaped guide plates that guide dry air from the center of the exhaust port to the tip of the container cylinder and between the opposing cylinders. Since they are arranged in parallel at intervals toward the tip, the dry air that has flowed into the dry air discharge guide chamber is discharged from the entire area of the air outlet of each cylinder through between the louver-shaped guide plates. The desired flow rate of dry air can be discharged under low static pressure in a uniformly distributed laminar flow state over the entire area up to the exhaust port while being guided toward the exhaust port, and the dry air can be discharged in a laminar flow state evenly distributed over the entire area up to the exhaust port. A vertical gap formed between the bodies is formed as an upward passage for the moist air, and the humid air rising from below is caused to flow along the circumferential surface of the cylindrical body, and a flow of dry air is released from the air outlet. The dry air and humid air are sucked toward the exhaust port as a mutually distributed laminar flow along the air, and at the bottom of the exhaust port, this dry air and humid air can be rectified with almost no mixing. Since the air is stirred by a blower installed at the exhaust port, dry air and humid air can be sufficiently mixed without increasing the power of the blower, achieving the desired white smoke prevention effect and reducing the consumption of the cooling tower as a whole. Power can be reduced and the total height of the cooling tower can be lowered.

When the air discharge port of the cylinder is formed in the upper wall of the cylinder, the dry air can be rectified in the same flow direction as the moist air without disturbing the flow of the dry air, and without noise. Moreover, the mixed air can be exhausted to the atmosphere without producing white smoke.

The louver-shaped guide plate guides the dry air to the central part of the exhaust port, making it possible to shorten the overall length of each cylinder, making it easier to install the cooling tower body in the cylinder, and reducing the amount of air inside the cooling tower body. Enough space can be taken on the L side of the hallway.

When the air discharge ports of the cylindrical body are provided in both side walls of the cylindrical body, the dry air flow and the humid air flow can be slightly mixed as a cross flow, and then sucked into the exhaust port as a laminar flow.

If the guide plate is an air volume adjustable guide vane, in the summer when white smoke is not likely to be generated, the guide vane is used to close the air outlet in order to block heat exchange in the dry heat exchanger. The inclination angle of this guide vane can be changed to adjust the gap size between the guide vanes, and the discharge amount can be changed according to the atmospheric humidity. The prevention effect can be enhanced.

When the cylindrical body is made of synthetic resin, it is easy to manufacture, its weight can be reduced, and it is easy to handle.

Furthermore, when the top wall of the cylindrical body is sloped and the bottom thereof is sloped as in claim 4, there is sufficient space between the blades of the blower and the air outlet provided in the top wall. is formed, and the air taken in from the upper end of the air outlet of the dry heat exchanger can be sufficiently discharged toward the exhaust port, and the water droplets that have fallen inside this cylinder are transferred along the bottom of the dry heat exchanger. It can be drawn toward the heat exchanger 11 side and discharged onto the wet heat exchanger below.

The dry heat exchanger has an air passage through which air flows horizontally, and a circulating cooling water flow passage formed between the air passages and through which circulating cooling water flows downward, and these two passages are made of synthetic resin. A circulating cooling water supply section opened to the outside is formed on the upstream side of the circulating cooling water flow passage, and a discharge part opened to the outside is also provided on the downstream side of the liquid flow passage. In the case where most of the width of this liquid flow passage is characterized as a flowing liquid slowing section, the circulating water supplied from the load section is transferred from the supply section to the circulating cooling water flow by gravity. The liquid can flow down sequentially in the slow-flowing part of the lower passage, can be discharged to the outside from the discharge part, and can be sprayed onto the wet heat exchanger below, and both the supply port and the discharge port are open to the outside. Circulating cooling water can be supplied into this dry heat exchanger without using special power, and at the same time when the operation of this cooling tower is stopped, circulating cooling water can be discharged to the outside from this discharge port under atmospheric pressure, and inside the dry heat exchanger. Freezing damage to this dry heat exchanger in winter can be prevented.

(Effects of the Embodiment) The effects of the embodiment are similar to those of the invention, and are related to the dry heat exchanger 11 shown in FIG. 3 in which the cylinder B is attached to the air outlet 15 as described above. Effects specific to the embodiment are as follows.

That is, even if the downstream liquid slowing section 31a becomes clogged during use, the circulating cooling water will not overflow from the supply section 35, and a portion of the circulating cooling water will flow over the base 39 to the overflow channel 3.
After flowing into 8, it flows down.

It can be discharged to the outside from the discharge part 36 together with the remaining circulating cooling water flowing down in the flowing liquid slowing part 31a, and can be sprayed onto the wet heat exchanger below.

The dry exchanger 11 can be constructed by simply arranging a plurality of hollow bodies 40 adjacent to each other, and circulating cooling water is supplied into each hollow body 40 from each supply port, and the circulating cooling water flowing down passage 31 is supplied from the supply section 35. The circulating cooling water can be uniformly spread over the wet heat exchanger 10 below by sequentially flowing down the flowing liquid slowing part 31a and being discharged to the outside from the discharge part 36. There is no need to unnecessarily wet the area around the outside air intake port of type cooling tower A.

The curved flowing liquid slowing section 31a is divided into two to four series of fluid passages by an overlapping section sealing section 31b at its central portion. The circulating cooling water can be distributed and flowed down along the four series of passages, and the circulating cooling water is indirectly brought into contact with the air passing through the air passage 30 on the entire surface of the hollow body 40 to cool it, thereby eliminating temperature unevenness. Lower wet heat exchanger in condition 1
Can be sprayed on 0.

The effects of this embodiment in the dry heat exchanger 11 shown in FIG. 4 are unique as follows.

That is, the two adjacent heat exchange partition plates 51 and 52 forming both walls of one air passage 50 are formed integrally with each other over the entire width of the upper end 56, and constitute a single heat exchanger unit 53. In this case, a plurality of heat exchanger units 53 are arranged parallel to each other and stand upright in the same case part, and one downstream passage 54 is formed between adjacent heat exchanger units 53. A predetermined heat exchanger can be obtained by simply arranging heat exchanger units 53 in parallel in the number corresponding to the heat exchange and interlocking them with each other, and when changing the heat exchange rate, the number of heat exchanger units 53 can be changed. This can be easily adjusted by increasing or decreasing the amount.

Further, one downstream passage 54 is formed between the adjacent heat exchanger units 53, and the adjacent heat exchanger units 53 are connected and arranged so as to be able to engage and separate from each other on the surface where this downstream passage 54 is formed. Therefore, even if dust and microorganisms adhere to the walls of the downstream passageway 54 and the clogging becomes severe enough to impede the flow of circulating water, the clogged downstream passageway 54 can be cleaned. By disengaging the adjacent heat exchanger units 53 that are formed, the connection of these heat exchanger units 53 is released,
By exposing the uneven surfaces of the heat exchange partition plates 51 and 52 of the adjacent heat exchanger units 53, which formed the inner surface of the downstream passage 54, to the outside and cleaning them, clogging of the liquid downstream passage can be easily eliminated. can.

[Brief explanation of the drawing]

The drawings relate to this invention: Fig. 1 is a partially cutaway schematic diagram of this embodiment, Fig. 2 is a plan view of the main part thereof, Fig. 3 is a front view showing an example of a dry heat exchanger, and Fig. 4 is a front view of another example, FIG. 5 is a side view showing the arrangement state of the one in FIG. 3, and FIG.
Figures 7 and 7 are cross-sectional views taken along lines 6-6 and 7-7 in Figure 3, and Figures 8 and 9 are cross-sectional views taken along lines 8-8 and 9-9 in Figure 4. , FIG. 10 is an enlarged sectional view showing the guide vane. Main symbol B in the figure: Cylindrical body.

Claims (1)

[Claims] 1) Synthetic resin dry heat exchangers are hierarchically arranged above the wet heat exchanger, and humid air that has passed through the wet heat exchanger and dry air that has passed through the dry heat exchanger. A cross-flow type cooling tower having a white smoke prevention function, in which a blower is installed at the exhaust port for exhausting the mixed air of , a plurality of cylinders for mixing wet and dry air are arranged at intervals and project horizontally below the exhaust port, and the air intake height of the cylinders corresponds to the total height of the air outlet. The tip of each cylinder is a closed end, and an air discharge port is opened in the upper wall of the cylinder from the air outlet side to the tip side, and the inside of the cylinder is dry and air discharge guide. This air outlet has several louver-shaped guide plates arranged in parallel at intervals from the cylindrical air intake to the tip to guide dry air toward the tip. A cross-flow cooling tower with a white smoke prevention function. 2) The cross-flow type cooling tower with a white smoke prevention function as set forth in claim 1, wherein each of the guide plates is an air volume-adjustable guide vane. 3) A cross-flow type cooling tower with a white smoke prevention function, wherein the cylindrical body according to claim 1 is made of synthetic resin. 4) The upper wall of the cylindrical body in which the air outlet of the cylindrical body according to claim 1 is perforated extends from the upper end of the air outlet of the dry heat exchanger to the lower part of the blower. The bottom of the cylindrical body is tilted downward in a direction opposite to the upper wall from the lower end of the air outlet toward the bottom of the blower, and serves as a water droplet receptacle. A cross-flow cooling tower with a white smoke prevention function. 5) The dry heat exchanger according to claim 1 has an air passage through which air flows in a horizontal direction, and a circulating cooling water flow passage formed between the air passages and through which circulating cooling water flows downward. , these two passages are partitioned by a partition plate made of synthetic resin, and a circulating cooling water supply section opened to the outside is formed on the upstream side of the circulating cooling water flow passage, and a circulating cooling water supply section opened to the outside is formed on the downstream side of the liquid flow passage. There is also a discharge part that opens to the outside.
A cross-flow type cooling tower having a white smoke prevention function, characterized in that most of the width of this liquid flow passage is a flowing liquid slowing section.