CN215003031U - Compound closed cooling tower - Google Patents
Compound closed cooling tower Download PDFInfo
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- CN215003031U CN215003031U CN202120776501.4U CN202120776501U CN215003031U CN 215003031 U CN215003031 U CN 215003031U CN 202120776501 U CN202120776501 U CN 202120776501U CN 215003031 U CN215003031 U CN 215003031U
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Abstract
The utility model discloses a compound closed cooling tower relates to the cooling arrangement field, pack etc. including vertical coil pipe heat exchanger, fan, spray pump, finned heat exchanger, spraying system, water catch bowl and manger plate. The vertical coil pipe type heat exchanger is connected with the finned tube heat exchanger in series through an outlet header and mainly comprises a plurality of vertical coil pipes. The vertical coil type heat exchanger has the advantages that the wind and water on the surface are in the same direction, the flowing speed of the water film is accelerated, a turbulent flow state is easily formed on the surface of the heat exchange tube, the boundary layer of spray water on the surface of the heat exchange tube is thin, the spray water is used for evaporation and heat absorption, and the fin type heat exchanger further cools process fluid to meet the use requirement of equipment on the process fluid.
Description
Technical Field
The utility model belongs to the technical field of the cooling arrangement and specifically relates to a compound closed cooling tower is related to.
Background
The cooling tower is a high-efficiency cooling device, and mainly utilizes the evaporation latent heat of water to take away the heat of process fluid (usually circulating water), so as to complete the cooling of the process fluid and realize the cyclic utilization of spray water. For closed cooling towers, the process fluid flows within the coil, conducting heat out of the tube through the wall of the tube; meanwhile, spray water is sprayed outside the pipe, a water film is formed on the outer wall of the pipe, and a heat exchange process of heat transfer and mass transfer is carried out outside the pipe through spray evaporation under the action of air, so that heat transfer is realized. The closed cooling tower can ensure that the water quality is not polluted, well protects the high-efficiency operation of the main equipment and prolongs the service life.
The tubular evaporative cooling coil is used as a core component of the closed cooling tower, and the performance of the tubular evaporative cooling coil directly influences the cooling effect of the closed cooling tower. Current closed cooling tower adopts horizontal coil heat exchanger as indirect heating equipment mostly, and the coil pipe adopts smooth metal pipe mostly, but its heat exchange efficiency is lower relatively and material consumption is more, and the cost is higher, and these factors make its use and popularization receive the restriction to a certain extent.
The water spraying filler is used as an important part in a common cooling tower, and has the effects of further cooling the water spraying which is heated by exchanging heat with fluid in the coil pipe by increasing the contact surface area of water and air and prolonging the contact time, and improving the efficiency of the cooling tower. However, the common material is PVC, which is easy to be damaged and not easy to be cleaned, has short service life, needs to be replaced frequently, and has high replacement cost. If the water spraying filler can be eliminated, the operating cost of the closed cooling tower can be reduced.
In addition, in a horizontal coil closed cooling tower, spray water collides with a smooth circular pipe for heat exchange, when the spray water flow is large, the coil is easy to vibrate, and the collision noise is large; moreover, the spray water flows from top to bottom, the cooling water in the pipe flows horizontally, and the spray water and the cooling water flow in a staggered manner; in addition, because the coil pipes are mostly arranged in a regular triangle staggered mode, air flow channels are small, resistance is large, scaling is easy to occur on the windward side, and the heat exchange effect is affected.
The closed cooling tower is widely applied to circulating water systems in various industry fields, and is used as important equipment of the system, and the selection of the scheme directly influences the overall performance and energy consumption of the system. The requirements of small size, light weight, large capacity and high efficiency on the cooling tower are increasingly emphasized.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a compound closed cooling tower, the flow direction of spray water and circulating air is consistent, the spray water film flows along the axis direction of the heat exchange tube, because the circulating air and the spray water flow through the heat exchange tube in the same direction, the spray water can well cover the surface of the heat exchange tube, the surface of the heat exchange tube is ensured to be completely wet, and the possibility of scaling caused by the dry spot formed on the windward surface of the heat exchange tube by the wind and water in the reverse direction is reduced by the same-direction flow; in addition, the spraying water film and the circulating air are consistent in flowing direction and driven by the circulating air, the flowing speed of the water film is accelerated, a turbulent state is easily formed on the surface of the heat exchange tube, so that the boundary layer of the spraying water on the surface of the heat exchange tube is thin, the heat exchange effect of the spraying water and a cooling medium in the tube is better, the using amount of the spraying water can be saved, the power of the spraying water pump can be reduced, the closed cooling tower is integrally economical, the heat exchange effect is better, and the size, the weight and the material consumption of the heat exchanger are saved.
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
a composite closed cooling tower comprises a cooling tower main body, wherein a spraying system and a fan are arranged on the outer side surface of the upper part of the cooling tower main body, a water collecting tray is arranged in the lower part of the cooling tower main body, the water collecting tray is connected with the spraying system through a pipeline with a spraying water pump, the fan is used for guiding gas in the cooling tower main body to flow, a vertical coil type heat exchanger and a fin type heat exchanger are arranged in the cooling tower main body, wherein,
the vertical setting of vertical coil heat exchanger just fin type heat exchanger level sets up, vertical coil heat exchanger's upper end orientation the delivery port of spraying system just vertical coil heat exchanger's lower extreme with fin type heat exchanger's one end is connected, the vapor and the shower water syntropy flow on vertical coil heat exchanger's surface to make the velocity of flow of the water film on surface accelerate and form the torrent state, the shower water is in the boundary layer on vertical coil heat exchanger's surface is thinner, utilizes the shower water evaporation heat absorption, fin type heat exchanger then further cools down to the process fluid.
The composite closed cooling tower further comprises a first water retaining filler and a second water retaining filler, wherein the first water retaining filler and the second water retaining filler are arranged at the air inlet of the fan in a surrounding and shielding manner so as to block liquid drops carried in water vapor of the vertical coil type heat exchanger and the finned heat exchanger.
The composite closed cooling tower further comprises an inlet collecting pipe and an outlet collecting pipe, wherein a plurality of vertical serpentine coils are vertically arranged between the inlet collecting pipe and the outlet collecting pipe, an inlet and an outlet of each vertical serpentine coil are respectively connected with the inlet collecting pipe and the outlet collecting pipe, and the vertical coiled pipe heat exchanger and the fin heat exchanger are connected in series through the outlet collecting pipe.
The combined closed cooling tower as described above, further, the vertical coil heat exchanger includes a first inlet header, a second inlet header and an outlet header, the outlet header is disposed at a lower portion of the heat exchanger, the first inlet header and the second inlet header are disposed at an upper portion of the vertical coil heat exchanger, a first vertical serpentine coil is disposed between the first inlet header and the outlet header, a second vertical serpentine coil is disposed between the second inlet header and the outlet header, the first vertical serpentine coil and the second vertical serpentine coil are symmetrically disposed and are respectively connected to left and right sides of the outlet header, and the vertical coil heat exchanger and the fin heat exchanger are connected in series through the outlet header.
In the above composite closed cooling tower, a water spraying filler is disposed between the first vertical serpentine coil and the second vertical serpentine coil.
In the above composite closed cooling tower, a water spraying filler is disposed on the outer sides of the first vertical serpentine coil and the second vertical serpentine coil.
According to the composite closed cooling tower, each vertical serpentine coil is formed by a plurality of twisted tubes in a disc shape, the center distance between two adjacent twisted tubes is equal to the distance between the long axes of the two adjacent twisted tubes, and a plurality of contact points are arranged between the two twisted tubes.
In the combined closed cooling tower, the inlet header, the outlet header and the vertical serpentine coil may be made of any one of stainless steel, copper and carbon steel.
According to the composite closed cooling tower, further, a distance exists between two adjacent vertical serpentine coils, and the distance range is 20-200 mm.
According to the composite closed cooling tower, the vertical serpentine coil can be any one of a smooth round pipe, a low-rib pipe, an oval pipe or a twisted pipe.
Compared with the prior art, the utility model, its beneficial effect lies in: the flow direction of the spray water and the circulating air of the utility model is consistent, the spray water film flows along the axis direction of the heat exchange tube, and the spray water can well cover the surface of the heat exchange tube because the circulating air and the spray water flow through the heat exchange tube in the same direction, so as to ensure that the surface of the heat exchange tube is completely wet, and the homodromous flow reduces the possibility of scaling because the wind water reversely forms dry spots on the windward side of the heat exchange tube; in addition, the spraying water film and the circulating air are consistent in flowing direction and driven by the circulating air, the flowing speed of the water film is accelerated, a turbulent state is easily formed on the surface of the heat exchange tube, so that the boundary layer of the spraying water on the surface of the heat exchange tube is thin, the heat exchange effect of the spraying water and a cooling medium in the tube is better, the using amount of the spraying water can be saved, the power of the spraying water pump can be reduced, the closed cooling tower is integrally economical, the heat exchange effect is better, and the size, the weight and the material consumption of the heat exchanger are saved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a preferred structure of an embodiment of a composite closed cooling tower according to the present invention;
fig. 2 is a schematic diagram of a preferred structure of a second embodiment of the composite closed cooling tower of the present invention;
fig. 3 is a schematic diagram of a preferred structure of a third embodiment of the composite closed cooling tower of the present invention;
illustration of the drawings:
1. a vertical coil heat exchanger; 2. a fan; 3. a spray water pump; 4. a finned heat exchanger; 5. a spray system; 6. a water collection tray; 7. the upper layer of water-retaining filler; 8. lower water retaining filler; 9. water spraying and filling; 11. a vertical serpentine coil; 12. an inlet header; 13. an outlet header; 14. a first inlet header; 15. a second inlet header; 16. a first vertical serpentine coil; a second vertical serpentine tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Example (b):
it should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, of embodiments of the present invention are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing and simplifying the invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.
In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, fig. 1 is a more preferred structural schematic diagram of an embodiment of a composite closed cooling tower according to the present invention; fig. 2 is a schematic diagram of a preferred structure of a second embodiment of the composite closed cooling tower of the present invention; fig. 3 is a schematic diagram of a preferred structure of a third embodiment of the composite closed cooling tower of the present invention.
The utility model aims at providing a compound closed cooling tower, the flow direction of spray water and circulating air is unanimous, and the spray water film flows along the heat exchange tube axis direction, because circulating air and spray water flow through the heat exchange tube in the same direction, the spray hydroenergy covers the heat exchange tube surface well, guarantees that the heat exchange tube surface is totally moist, and this kind of syntropy flow reduces because the geomantic omen is reverse to form the possibility of dry spot and scale deposit at the heat exchange tube windward side; in addition, the spraying water film and the circulating air are consistent in flowing direction and driven by the circulating air, the flowing speed of the water film is accelerated, a turbulent state is easily formed on the surface of the heat exchange tube, so that the boundary layer of the spraying water on the surface of the heat exchange tube is thin, the heat exchange effect of the spraying water and a cooling medium in the tube is better, the using amount of the spraying water can be saved, the power of the spraying water pump can be reduced, the closed cooling tower is integrally economical, the heat exchange effect is better, and the size, the weight and the material consumption of the heat exchanger are saved.
A composite closed cooling tower comprises a cooling tower main body, wherein a spraying system 5 and a fan 2 are arranged on the outer side surface of the upper part of the cooling tower main body, a water collecting tray 6 is arranged in the lower part of the cooling tower main body, the water collecting tray 6 is connected with the spraying system 5 through a pipeline with a spraying water pump 3, the fan 2 is used for guiding gas in the cooling tower main body to flow, a vertical coil type heat exchanger and a fin type heat exchanger 4 are arranged in the cooling tower main body,
the vertical coil type heat exchanger is vertically arranged, the fin type heat exchanger 4 is horizontally arranged, the upper end of the vertical coil type heat exchanger faces the water outlet of the spraying system 5, the lower end of the vertical coil type heat exchanger is connected with one end of the fin type heat exchanger 4, water vapor and spray water on the surface of the vertical coil type heat exchanger 1 flow in the same direction, so that the flow speed of a water film on the surface is accelerated to form a turbulent flow state, the boundary layer of the spray water on the surface of the vertical coil type heat exchanger 1 is thin, the spray water is evaporated to absorb heat, and the fin type heat exchanger further cools process fluid.
As an optional implementation manner, in some embodiments, the heat exchanger further includes a first water retaining filler and a second water retaining filler, and the first water retaining filler and the second water retaining filler are arranged to cover the air inlet of the fan 2 to retain liquid droplets entrained in the water vapor of the vertical coil type heat exchanger 1 and the finned type heat exchanger 4.
As an alternative implementation manner, in some embodiments, the vertical coil heat exchanger 1 includes an inlet header 12 and an outlet header 13, a plurality of vertical coils 11 are vertically disposed between the inlet header 12 and the outlet header 13, an inlet and an outlet of each vertical coil 11 are respectively connected to the inlet header 12 and the outlet header 13, and the vertical coil heat exchanger 1 and the fin heat exchanger 4 are connected in series through the outlet header 13.
As an alternative embodiment, in some embodiments, the vertical coil heat exchanger 1 includes a first inlet header 14, a second inlet header 15 and an outlet header 13, the outlet header 13 is disposed at a lower portion of the heat exchanger, the first inlet header 14 and the second inlet header 15 are disposed at an upper portion of the vertical coil heat exchanger 1, a first vertical serpentine coil 16 is disposed between the first inlet header 12 and the outlet header 13, the second inlet header 15 and the outlet header 13 are supported by a second vertical serpentine coil, the first vertical serpentine coil 16 and the second vertical serpentine coil 11 are symmetrically disposed and connected to left and right sides of the outlet header 13, respectively, and the vertical coil heat exchanger 1 is connected in series with the fin heat exchanger 4 through the outlet header 13.
As an alternative embodiment, in some embodiments, a trickle packing 9 is disposed between the first vertical serpentine coil 16 and the second vertical serpentine coil.
As an alternative, in some embodiments, the outer sides of the first vertical serpentine coil 16 and the second vertical serpentine coil are provided with the water-spraying packing 9.
As an alternative, in some embodiments, each of the vertical serpentine coils 11 is formed by a plurality of twisted tubes in a disc shape, and when the center distance between two adjacent twisted tubes is equal to the distance between the long axes of the twisted tubes, there are several contact points between the two twisted tubes.
As an alternative embodiment, in some embodiments, the inlet header 12, the outlet header 13, and the vertical serpentine coil 11 may be made of any one of stainless steel, copper, or carbon steel.
As an alternative embodiment, in some embodiments, there is a spacing between two adjacent vertical serpentine coils 11, and the spacing is in the range of 20-200 mm.
As an alternative embodiment, in some embodiments, the vertical serpentine coil 11 can be any one of a smooth round tube, a low-rib tube, an oval tube, or a twisted tube.
The technical solution of the present invention is clearly and completely described below by way of examples.
Example one
Referring to fig. 1, the utility model provides a pair of compound closed cooling tower mainly includes: the device comprises a vertical coil type heat exchanger 1, a fan 2, a spray water pump 3, a finned heat exchanger 4, a spray system 5, a water collecting tray 6, a first water retaining filler 7, a second water retaining filler 8 and the like. Cooling water in the water collecting tray 6 is driven by the spray water pump 3 to flow through the spray system 5 and be uniformly sprayed on the surface of the vertical coil type heat exchanger, the heat of process fluid in the pipe is absorbed to be heated, spray water flowing out of the heat exchanger is subjected to heat-mass exchange with air on the surface of the fin type heat exchanger, part of water vapor is taken away by the air, the temperature of the spray water is reduced, and finally the spray water returns to the water collecting tray to complete a cycle. The liquid drops entrained in the air are blocked by the water retaining filler and then return to the water collecting tray.
The process fluid flows through the vertical coil type heat exchanger 1 and the finned heat exchanger 4 in sequence and is supplied to the equipment again for use.
The vertical coil pipe type heat exchanger mainly comprises an inlet header pipe 12, an outlet header pipe 13 and a plurality of vertical serpentine coil pipes 11 between the inlet header pipe and the outlet header pipe, wherein the inlet and the outlet of the vertical serpentine coil pipes 11 are connected with the header pipes 12 and 13 in a welding mode, and the vertical serpentine coil pipes 11 can adopt smooth round pipes, low-rib pipes, oval pipes, twisted pipes and the like; this embodiment preferentially adopts the twisted tube, because the twisted tube cross section is oval shape, when centre-to-centre spacing between the adjacent twisted tube is equal mutually rather than the outer major axis of pipe, can have a plurality of contact point between the adjacent twisted tube, plays the effect of mutual support through these contact points, can effectively prevent the heat exchange tube because the vibration that produces is skipped over to spray water and high velocity air to can improve the velocity of flow of outside of tubes air.
A plurality of vertical serpentine coil 11 parallel arrangement, according to the quantity of vertical serpentine coil 11 of closed cooling tower heat transfer volume size rational design, the distance between two adjacent is the same, designs according to air flow rate, when above-mentioned distance is great, can insert a small amount of filler between the two, prevents during the direct drip water collector of shower water, can also increase shower water and circulating air's area of contact simultaneously, effectively cools off its temperature.
Example two
Referring to fig. 2, for the utility model provides a compound closed cooling tower preferred embodiment two, can see from the drawing that its difference with embodiment one lies in this vertical tube heat exchanger and has two coolant entry, and this kind of structure is suitable for the great occasion of coolant flow, is favorable to reducing the coolant velocity of flow in single heat exchange tube through setting up two entries to reduce frictional resistance.
Set up one deck trickle and pack 9 in two coil pipes about, increase the area of contact of shower water and air, effectively reduce the shower water temperature, improve cooling tower heat transfer effect. In addition, two rows of heat exchange tubes are arranged in a bilateral symmetry mode, so that the length of the whole heat exchanger is reduced, the external dimension of the closed cooling tower is reduced, and the occupied area is reduced.
EXAMPLE III
Referring to fig. 3, in order to provide a third preferred embodiment of the heat exchanger for a composite closed cooling tower of the present invention, it can be seen from the figure that the difference between the third preferred embodiment and the second preferred embodiment is that the outlets of the left and right vertical coils are all located at the highest position of the outlet header 13, and the gap existing in the second preferred embodiment is not available, so the width of the heat exchanger is smaller. Because the width of the heat exchanger is reduced, two groups of smaller water spraying fillers 9 can be arranged on two sides, the contact area of the water spraying and the air is increased, the temperature of the water spraying is effectively reduced, and the heat exchange effect of the cooling tower is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. A composite closed cooling tower comprises a cooling tower main body, and is characterized in that a spraying system and a fan are arranged on the outer side surface of the upper part of the cooling tower main body, a water collecting tray is arranged in the lower part of the cooling tower main body, the water collecting tray is connected with the spraying system through a pipeline with a spraying water pump, the fan is used for guiding gas in the cooling tower main body to flow, a vertical coil type heat exchanger and a finned heat exchanger are arranged in the cooling tower main body, wherein,
the vertical setting of vertical coil heat exchanger just fin type heat exchanger level sets up, vertical coil heat exchanger's upper end orientation the delivery port of spraying system just vertical coil heat exchanger's lower extreme with fin type heat exchanger's one end is connected, the vapor and the shower water syntropy flow on vertical coil heat exchanger's surface to make the velocity of flow of the water film on surface accelerate and form the torrent state, the shower water is in the boundary layer on vertical coil heat exchanger's surface is thinner, utilizes the shower water evaporation heat absorption, fin type heat exchanger then further cools down to the process fluid.
2. The compound closed cooling tower according to claim 1, further comprising a first water retaining filler and a second water retaining filler, wherein the first water retaining filler and the second water retaining filler are arranged at the air inlet of the fan in a shielding manner so as to retain liquid drops entrained in the water vapor of the vertical coil type heat exchanger and the finned type heat exchanger.
3. The compound closed cooling tower according to claim 1, wherein the vertical coil type heat exchanger comprises an inlet header and an outlet header, a plurality of vertical coil type pipes are vertically arranged between the inlet header and the outlet header, an inlet and an outlet of each vertical coil type pipe are respectively connected with the inlet header and the outlet header, and the vertical coil type heat exchanger and the fin type heat exchanger are connected in series through the outlet header.
4. A compound closed cooling tower according to claim 1, wherein the vertical coil heat exchanger comprises a first inlet header, a second inlet header and an outlet header, the outlet header is disposed at a lower portion of the heat exchanger, the first inlet header and the second inlet header are disposed at an upper portion of the vertical coil heat exchanger, a first vertical serpentine coil is disposed between the first inlet header and the outlet header, a second vertical serpentine coil is disposed between the second inlet header and the outlet header, the first vertical serpentine coil and the second vertical serpentine coil are symmetrically disposed and are respectively connected at left and right sides of the outlet header, and the vertical coil heat exchanger and the fin heat exchanger are connected in series through the outlet header.
5. The compound closed cooling tower of claim 4, wherein a trickle packing is disposed between the first vertical serpentine coil and the second vertical serpentine coil.
6. The compound closed cooling tower according to claim 4, wherein the first vertical serpentine coil and the second vertical serpentine coil are provided with water spray packing on the outer sides thereof.
7. A composite closed cooling tower according to any one of claims 3 to 6, wherein each of the vertical serpentine coils is formed by a plurality of twisted tubes in a disc shape, and a plurality of contact points exist between two adjacent twisted tubes when the center distance between the two twisted tubes is equal to the distance between the long axes of the two twisted tubes.
8. A combined closed cooling tower according to any one of claims 3 to 6, wherein the inlet header, the outlet header and the vertical serpentine coil are made of any one of stainless steel, copper or carbon steel.
9. A composite closed cooling tower according to claim 3, wherein a spacing exists between two adjacent vertical serpentine coils, and the spacing is in a range of 20-200 mm.
10. A composite closed cooling tower according to any one of claims 3 to 6, wherein the vertical serpentine coil is any one of a smooth round tube, a low-rib tube, an oval tube or a twisted tube.
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| CN202120776501.4U CN215003031U (en) | 2021-04-15 | 2021-04-15 | Compound closed cooling tower |
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| CN115218684A (en) * | 2021-04-15 | 2022-10-21 | 中国科学院广州能源研究所 | Compound closed cooling tower |
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| CN115218684A (en) * | 2021-04-15 | 2022-10-21 | 中国科学院广州能源研究所 | Compound closed cooling tower |
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