A water-saving and mist-eliminating cooling tower device and system based on a micro heat pipe array

Abstract

A water-saving and fog-eliminating cooling tower device and system based on a micro-heat pipe array comprises multiple groups of air-to-water air cooler modules, each module comprising a heat exchange unit and a multi-porous parallel flow pipe. The heat exchange unit comprises a micro-heat pipe array and air-cooled finned ducts attached to the outer wall of the micro-heat pipe array. The multi-porous parallel flow pipes intersect the direction of the micro-heat pipe array, and the walls of the multi-porous parallel flow pipes adhere to the micro-heat pipe array. The portion of the micro-heat pipe array that adheres to the multi-porous parallel flow pipes constitutes the evaporation section, while the remaining portion constitutes the condensation section. The air-cooled finned ducts lead to the dry section of the cooling tower. This invention utilizes the low thermal resistance and high heat exchange efficiency of the flat micro-heat pipe array to effectively combine the high-efficiency micro-heat pipe array assembly with the multi-porous parallel flow pipe assembly, thereby increasing the heat exchange area and enhancing heat transfer. The mixing of dry and wet air reduces unsaturation, achieving the goals of conserving water resources and energy-saving fog elimination.

Description

Technical Field

[0001] The invention relates to a water-saving and mist-eliminating cooling tower heat exchange device and system, belonging to the field of enhanced heat exchange and energy saving. Background Art

[0002] my country's water resources are scarce, and water conservation has become an imperative for social development. However, industrial water consumption is enormous, accounting for approximately a quarter of total societal water consumption, and industrial cooling water accounts for over 80% of total industrial water consumption. Cooling towers are key components of the industrial cooling water circulation process. During this process, cooling water transfers heat and mass with the air within the tower, but evaporation, windblown air, and blowdown are unavoidable physical processes that contribute to significant cooling water losses. Furthermore, water mist contamination at the cooling tower outlet is a major concern for wet cooling towers.

[0003] In addition to the serious waste of water resources in cooling towers mentioned above, existing conventional cooling tower water-saving methods also have various defects such as poor heat exchange performance, complex structural design, large air-side flow resistance, dense fin structure prone to clogging, staggered and dense structure difficult to disassemble and clean, etc. Summary of the Invention

[0004] In order to solve the problems of large cooling water loss, large pollution and unreasonable structure of existing cooling towers, the present invention proposes a water-saving and mist-eliminating cooling tower equipment and system based on a micro heat pipe array.

[0005] The technical solutions of the present invention are as follows:

[0006] A water-saving and mist-eliminating cooling tower device based on a micro heat pipe array includes multiple groups of air-water air cooler modules, each air-water air cooler module includes a heat exchange unit and a multi-porous channel parallel flow pipe, the heat exchange unit includes a micro heat pipe array and an air-cooled fin duct attached to the outer wall of the micro heat pipe array, the multi-porous channel parallel water pipe intersects the direction of the micro heat pipe array, and the wall of the multi-porous channel parallel water pipe attaches to the micro heat pipe array, the part of the micro heat pipe array attached to the multi-porous channel parallel water pipe is the evaporation section, and the remaining part is the condensation section, and the air-cooled fin duct leads to the dry section of the cooling tower.

[0007] Preferably, the multi-porous channel parallel flow pipes are arranged vertically downward, and multiple heat exchange units are attached to the two side walls of each multi-porous channel parallel flow pipe to form a row of heat exchange components. The micro heat pipe array has an upward inclination angle of not less than 2° with the horizontal direction, and the condensing section is higher than the evaporating section. The inlet of the air-cooled fin air duct on the evaporating section side is the air inlet side.

[0008] It is further preferred that the multi-porous channel is a flat tube multi-porous channel formed by integrally extruding parallel flow pipes, and the number of internal channels is 1-23.

[0009] It is further preferred that the parallel flow pipes of the porous channels in each group are connected to the main pipe through branch pipes.

[0010] Preferably, the multi-porous channel parallel flow pipe is arranged horizontally, the micro heat pipe array is arranged vertically, and the bottom end is fitted with the multi-porous channel parallel flow pipe, the fitting part is the evaporation section, the upper unfitted section is the condensation section, and the walls on both sides of the condensation section are horizontally fitted with the air-cooled fin air duct.

[0011] It is further preferred that the parallel flow pipes with porous channels in each group are connected to the main pipe through branch pipes, wherein the branch pipes at the inlet are higher than the branch pipes at the outlet.

[0012] Preferably, the thickness of the micro heat pipe array is 0.3-15 mm, the width is 10 mm-120 mm, and the single hole size of the air-cooling fin air duct is greater than 5 mm.

[0013] Preferably, the micro heat pipe array and the air-cooling fin air duct are connected by thermally conductive silicone gluing or brazing.

[0014] A water-saving and mist-eliminating cooling tower system based on a micro heat pipe array adopts the aforementioned equipment, which is installed on the side wall of the upper dry section of the cooling tower. The lower part of the cooling tower is the wet section. The cooling water in the parallel flow pipes of the porous channels is pre-cooled by the equipment and then enters the wet section for spray cooling.

[0015] Preferably, a three-way regulating valve is installed on the cooling water pipe branches leading to the dry section and the wet section, and / or a louver fence or a rolling door is provided outside the windward side of the equipment.

[0016] The technical effects of the present invention are as follows:

[0017] The present invention utilizes the principles and methods of a combined dry-wet water-saving and mist-eliminating system. First, a modular air-to-water air cooler with a compact, lightweight structure and high-efficiency sensible heat exchange is designed, using a micro-heat pipe array as the core heat transfer element. The air cooler can be configured horizontally or vertically and installed on the side of the upper dry section of the cooling tower tuyere. Under the action of a fan, outdoor cold air exchanges sensible heat with the cooling water in the water pipe, pre-cooling the cooling water to the maximum extent possible. The cooling water is then further cooled by spraying the wet section of the cooling tower, utilizing the lower wet-bulb temperature. While maintaining limited space, enabling long-distance heat transfer, and reducing project costs, the system maximizes sensible heat exchange, increases the cooling temperature difference in the dry section, reduces the cooling ratio in the wet section of the cooling tower, and minimizes water waste. Furthermore, the upper dry air mixes with the lower wet air, and the unsaturated mixed air is discharged, reducing or alleviating the discharge of fog (water vapor rapidly condenses into small droplets at a relative humidity of 100% when discharged upon encountering cold), further achieving energy conservation and emission reduction.

[0018] Multi-hole parallel flow tubes are flat and extruded as a single unit. The number of internal channels ranges from 1 to 23 or more, depending on the heat exchange area and actual needs. They can be made of aluminum, steel, and other materials. The parallel arrangement of multiple channels increases the heat exchange area and reduces the thickness of the boundary layer between the internal water flow and the wall. Furthermore, the walls between the channels act as internal and external pressure bearings. Mixing troughs are installed at the inlet and outlet of the multi-hole parallel flow tubes to ensure even water distribution.

[0019] The air-cooled fins use multi-hole parallel flow fin ducts with an aperture of more than 5mm to ensure that the air flows from the inlet to the outlet in a single flow channel of each hole. The flow resistance is small and the aperture is large, which overcomes the defects of conventional tube-fin and plate-fin heat exchangers such as the disturbance of airflow caused by the staggered arrangement of tubes and the large heat exchange resistance, easy clogging and difficulty in cleaning caused by dense fins.

[0020] Heat exchanger equipment is divided into vertical heat exchange equipment and horizontal heat exchange equipment according to the vertical and horizontal flow directions of water.

[0021] In this vertical heat exchanger, cooling water flows vertically within parallel flow tubes, facilitating water drainage and anti-freezing in cold weather or when the equipment is not in operation. The microheat pipe array must maintain an inclination of +2° or greater with respect to the horizontal, and the working fluid within the microheat pipe array must rely on gravity reflux to achieve reciprocating phase change heat transfer.

[0022] The vertical heat exchange equipment is composed of a flat micro heat pipe array placed obliquely on both sides of the vertical porous channel parallel flow tube, and an air-cooled fin air duct on the outer wall of the micro heat pipe array. The bonded parts are glued and tightly compacted with high thermal conductivity thermal conductive silicone. The above constitutes a row of core heat exchange units. According to the requirements of different heat exchange areas and heat exchange capacities, multiple rows of core heat exchange units are arranged side by side to form the entire heat exchange equipment. The part where the micro heat pipe array of the vertical heat exchange equipment fits into the water pipe is the evaporation section of the micro heat pipe; the part where the micro heat pipe array contacts the air and the part where the micro heat pipe array contacts the fin is the condensation section of the micro heat pipe. The micro heat pipe array transfers the heat of the local water pipe to the entire heat exchange surface in contact with the air to participate in heat exchange. The air flow and water flow are basically vertical cross flow. This method simplifies the water pipe pipeline, reduces the water side resistance and the amount of pipe material used, and at the same time, increases the heat exchange area with the air, achieving lightweight and compact structure for heat exchange. At the same time, the overall flat appearance of the heat exchanger basically does not increase the floor space and appearance size of the cooling tower. The heat exchanger can be divided into modular application and installation according to the area of the side of the cooling tower.

[0023] In the horizontal heat exchange equipment, cooling water flows horizontally in parallel flow pipes, and the parallel flow pipes are only arranged at the bottom of the heat exchanger. The water flow is short and the resistance is small. At the same time, the inlet and outlet branches of the parallel flow pipes can be set with height differences to facilitate exhaust and emptying to prevent freezing.

[0024] Horizontal heat exchange equipment consists of a single-sided wall surface of a horizontal, porous, parallel flow tube, with a vertically placed flat microheat pipe array attached. Air-cooled finned ducts are attached to the walls of both sides of the microheat pipe array. The attached portions are bonded and tightly compacted using high-thermal-conductivity thermally conductive silicone. These components form a core heat exchange unit. Multiple columns of these units are arranged side by side to form the entire heat exchanger, depending on the required heat exchange area and heat exchange capacity. The parallel flow pipes of horizontal heat exchange equipment are short, and the heat exchanger has a small water storage capacity. The portion that attaches to the bottom of the microheat pipe array is the evaporation section of the microheat pipe, while the upper portion in contact with the air and fins is the condensation section. The heat of the cooling water is transferred upward through the microheat pipes to the entire air duct, where convection between the fins and the air achieves efficient heat exchange. At the same time, heat transfer is enhanced by ensuring that the air flow and water flow directions remain in countercurrent.

[0025] When vertical heat exchange equipment and horizontal heat exchange equipment are modularly applied to the side wall of the cooling tower, ensure that the main pipe water channel and each heat exchanger module are connected in the same way to avoid the problem of poor local heat exchange effect caused by uneven water flow distribution.

[0026] The integrated water-saving and mist-eliminating cooling tower system based on a micro-heat pipe array, with respect to the water system, is based on the two different types of heat exchange equipment described above. Under the action of the overall pump group, the cooling water first passes through the dry section heat exchanger, and then is sprayed to the wet section of the cooling tower, utilizing the lower wet-bulb temperature to continue cooling. On this basis, a three-way regulating valve can be preferably installed on the branch lines to the dry and wet sections, and with respect to the air system, a louvered fence or rolling shutter door can be installed on the windward side of the overall dry section heat exchanger. The above-mentioned air system and water system are linked together, automatically adjusting the three-way water flow switch and louvered fence opening according to different weather conditions, ambient temperature, and cooling water temperature. When the outdoor temperature is high, the louvered fence and the water flow switch in the dry section are directly closed; when the outdoor temperature is low, the louvered fence and the water flow switch in the dry section are opened.

[0027] The advantages of the present invention are as follows:

[0028] The flat micro heat pipe array with capillary microgrooves provides high local heat flux density and efficient long-range heat transfer. The micro heat pipe array is tightly bonded to the base of the parallel flow air-cooling fins, increasing the heat transfer area of the heat pipe while minimizing the thermal resistance between the fins and the heat pipe.

[0029] The multi-porous channel parallel flow tube solves the problem of low heat transfer capacity of conventional circular water pipes due to size factors by connecting multiple channels in parallel. The inner wall is covered with capillary microgrooves, which greatly increases the heat exchange area.

[0030] The heat of the cooling water in the water pipe is quickly transferred through the micro heat pipe array, and the parallel flow air cooling fins are used to expand the convection heat exchange area with the air side to quickly dissipate heat.

[0031] The heat exchanger equipment based on the sensible heat exchange of the dry section of the cooling tower is designed by combining three types of heat exchange components: micro heat pipe array, parallel flow air cooling fins, and porous channel parallel flow tubes. It maximizes the sensible heat exchange temperature difference of the cooling water, effectively improves the cooling and pre-cooling capacity of the dry section of the cooling tower, and reduces the processing ratio of the wet section of the cooling tower. At the same time, the mixing of dry air and wet air reduces the degree of unsaturation, achieving the purpose of saving water resources and energy-saving defogging. On the basis of the above, the number of water pipes used is reduced and the water pipe lines are simplified. On the basis of improving heat exchange performance, reducing flow resistance, not easy to clog, simple and easy to clean structure, the cooling tower can achieve the maximum water saving and defogging, energy saving and emission reduction.

[0032] In summary, the present invention is a water-saving and defogging cooling tower device and system based on a micro-heat pipe array. It utilizes the characteristics of low thermal resistance and high heat exchange efficiency of the flat micro-heat pipe array to effectively combine the high-efficiency micro-heat pipe array component with the multi-hole channel parallel flow pipe component, thereby increasing the heat exchange area and enhancing heat transfer. At the same time, the parallel flow air-cooled fins are used to expand the convection heat exchange area with the air side, reduce the number of water pipes used and simplify the water pipe pipeline. By installing it on the side wall of the upper dry section of the cooling tower, the cooling water is pre-cooled by sensible heat exchange. On the basis of improving heat exchange performance, reducing flow resistance, not easy to clog, simple and easy to clean structure, the cooling and pre-cooling capacity of the dry section of the cooling tower is effectively improved, and the processing ratio of the wet section of the cooling tower is reduced. At the same time, combined with the wet section spray cooling, low resistance, low energy consumption and high efficiency heat dissipation are achieved, while saving water resources and eliminating fog to meet environmental protection requirements. The dry air and wet air are mixed to reduce the unsaturation, thereby achieving the purpose of saving water resources and energy saving and defogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Shown is a schematic diagram of a heat exchange unit of a vertical heat exchanger;

[0034] Figure 2 Shown is a schematic diagram of the heat exchange components of a vertical heat exchanger;

[0035] Figure 3 Shown is a schematic diagram of a heat exchange module of a vertical heat exchanger;

[0036] Figure 4 The figure shows the overall schematic diagram of vertical heat exchanger applied to water saving and mist elimination in the dry section of cooling tower;

[0037] Figure 5 Shown is a schematic diagram of a heat exchange unit of a horizontal heat exchanger;

[0038] Figure 6 Shown is a schematic diagram of the heat exchange components of a horizontal heat exchanger;

[0039] Figure 7 Shown is a schematic diagram of a heat exchange module of a horizontal heat exchanger;

[0040] Figure 8 The figure shows the overall schematic diagram of the horizontal heat exchanger applied to the dry section of the cooling tower to save water and eliminate mist;

[0041] The reference numbers in the figure are listed as follows:

[0042] 1—Micro heat pipe array; 2—Air-cooled fin duct; 3—Heat exchange unit of vertical heat exchanger; 4—Parallel flow pipe with porous channels; 5—Branch and trunk pipes; 6—Heat exchange components of vertical heat exchanger; 7—Trunk pipe; 8—Vertical heat exchanger module; 9—Cooling tower; 10—Cooling tower dry section; 11—Cooling tower wet section; 12—Fan; 13—Heat exchange unit of horizontal heat exchanger; 14—Heat exchange components of horizontal heat exchanger; 15—Horizontal heat exchanger module. DETAILED DESCRIPTION

[0043] In order to better understand the present invention, the following Figures 1 to 8 The present invention will be further explained.

[0044] Example 1

[0045] This embodiment is a vertical heat exchanger device and system based on the dry section of a water-saving and mist-eliminating cooling tower with a micro heat pipe array. The heat exchange unit of the vertical heat exchanger is as follows: Figure 1 As shown, the air-cooled finned air duct 2 is bonded to the outer wall of the micro heat pipe array 1. The thickness of the micro heat pipe array is 5mm and the width is 30mm. According to the use requirements, the thickness of the micro heat pipe array is 0.3-15mm, and the width can also be adjusted between 10mm-120mm. The single hole size of the finned air duct is above 5mm, which reduces the flow resistance on the air side and reduces the risk of blockage. The bonded part is pasted and tightly compacted with thermal conductive silicone with high thermal conductivity. According to the process requirements, it can also be directly welded together using a brazing process. The above-mentioned micro heat pipe array 1 and a single-sided bonded air-cooled finned air duct 2 form a heat exchange unit 3.

[0046] The heat exchange components of the vertical heat exchanger are as follows: Figure 2As shown, based on the requirements for different heat exchange areas and heat exchange capacities, multiple heat exchange units 3 are attached to the side walls of a multi-porous parallel flow pipe 4 in parallel to form a heat exchange assembly 6. In this embodiment, there are 15 heat exchange units 3. The microheat pipe array 1 of this heat exchange assembly maintains a 5° inclination with the horizontal. The working fluid within the microheat pipe array 1 relies on gravity reflux to achieve reciprocating phase change heat transfer. The portion of the microheat pipe array 1 that adheres to the multi-porous parallel flow pipe 4 is the evaporation section of the microheat pipe array, while the portion in contact with the fins and air is the condensation section of the microheat pipe array. The multi-porous parallel flow pipe 4 is extruded as a whole, and the number of internal channels ranges from 1 to 23 or more, depending on the heat exchange area and actual requirements. The material can be aluminum profiles, steel, or other materials. The multi-porous parallel connection increases the heat exchange area, solving the problem of low heat transfer capacity caused by the size of conventional circular water pipes. The partition walls between each small square hole channel provide structural support and reinforcement, greatly increasing its pressure-bearing capacity. The small channel flat tube has a flat shape and can be easily fitted with the heat exchange surface, reducing the interface contact thermal resistance. The vertical water flow can solve the emptying and anti-freezing problems.

[0047] The heat exchange module of the vertical heat exchanger is as follows Figure 3 As shown, multiple rows of heat exchange components are arranged side by side and compacted to form a complete heat exchange module 8. The parallel water pipe side of the porous channels serves as the air inlet, and air flows along the length of the micro heat pipe array to exchange heat. A main trunk pipe 7 connects the branch pipes 5 of each row of heat exchange components. This same design ensures even water distribution within each row of water pipes.

[0048] The overall system diagram of vertical heat exchanger applied to cooling tower dry section water saving and mist elimination is as follows Figure 4 As shown, a modular vertical heat exchanger module 8 with a compact structure, lightweight and efficient sensible heat exchange designed with a micro heat pipe array as the core heat transfer unit is installed on the side wall of the upper dry section of the cooling tower according to the heat exchange requirements. The dry-wet combined water-saving and mist elimination principle and method are adopted. Under the action of the fan, sensible heat exchange is achieved between the outdoor cold air and the cooling water in the water pipe, and the cooling water is pre-cooled to the maximum extent. Then, the cooling water is further cooled by spraying in the wet section of the cooling tower using a lower wet-bulb temperature.

[0049] Example 2

[0050] This embodiment is a horizontal heat exchanger device and system based on the dry section of a water-saving and mist-eliminating cooling tower with a micro heat pipe array. The heat exchange unit of the horizontal heat exchanger is as follows: Figure 5As shown, air-cooled finned ducts 2 are bonded to the two side walls of the vertically placed micro heat pipe array 1. According to the use requirements, the thickness of the micro heat pipe array is 0.3-15mm, and the width can be adjusted between 10mm-120mm. The single hole size of the finned duct is above 5mm, which reduces the flow resistance on the air side and reduces the risk of blockage. The bonded part is pasted and tightly compacted using thermal conductive silicone with high thermal conductivity. According to the process requirements, it can also be directly welded together using a brazing process. The above-mentioned one micro heat pipe array 1 and multiple air-cooled finned ducts 2 are bonded on both sides to form a heat exchange unit 13.

[0051] The heat exchange components of the horizontal heat exchanger are as follows: Figure 6 As shown, based on the requirements for different heat exchange areas and heat exchange capacities, multiple heat exchange units 13 are attached to a single side wall of a multi-porous parallel flow pipe 4 and arranged side by side to form a heat exchange assembly 14. The portion of the microheat pipe array 1 that mates with the multi-porous parallel flow pipe 4 constitutes the evaporation section of the microheat pipe array, while the portion in contact with the fins and air constitutes the condensation section. The multi-porous parallel flow pipe 4 is extruded integrally, with the number of internal channels ranging from 1 to 23 or more, depending on the heat exchange area and actual requirements. The material can be aluminum, steel, or other materials. The multi-porous parallel connection increases the heat exchange area, resolving the issue of low heat transfer capacity associated with conventional circular water pipes due to their size. The partitions between each small square hole channel provide structural support and reinforcement, significantly increasing its pressure-bearing capacity. The flat shape of the small channel flat tube facilitates contact with the heat exchange surface, reducing interfacial contact thermal resistance. The inlet and outlet branch pipes 5 are arranged with a certain height difference to facilitate venting and emptying during water flow to prevent freezing.

[0052] The heat exchange module of the horizontal heat exchanger is as follows Figure 7 As shown, multiple rows of heat exchange components are arranged side by side, tightly compacted, to form the entire heat exchanger module 15. Cooling water flows only in the lower portion of the module, while heat is completely transferred to the upper portion through the micro-heat pipe array, where it is enhanced with heat exchange with the micro-heat pipe array and air-cooled fins. This streamlines the flow path and reduces resistance. A main pipe connects the branch pipes of each row of heat exchange components. This uniform design ensures even water distribution within each row.

[0053] The overall system diagram of horizontal heat exchanger applied to cooling tower dry section water saving and mist elimination is as follows Figure 8 As shown, a modular horizontal heat exchanger module 15 with a compact structure, lightweight and efficient sensible heat exchange designed with a micro heat pipe array as the core heat transfer unit is installed on the side wall of the upper dry section of the cooling tower according to the heat exchange requirements. The dry-wet combined water-saving and mist elimination principle and method are adopted. Under the action of the fan, sensible heat exchange is achieved between the outdoor cold air and the cooling water in the water pipe, and the cooling water is pre-cooled to the maximum extent. Then, the cooling water is further cooled by spraying in the wet section of the cooling tower using a lower wet-bulb temperature.

[0054] In Examples 1 and 2, a water-saving, mist-eliminating cooling tower system based on a micro-heat pipe array, based on the two different types of dry-side heat exchange equipment described above, is equipped with three-way regulating valves on the pipe branches to the dry and wet sections, driven by a cooling water pump. Furthermore, louvers or rolling shutters are installed on the windward side of the main dry-side heat exchanger to address the windage. These two systems are linked to automatically adjust the three-way water flow switch and louver opening according to varying weather conditions, ambient temperature, and cooling water temperature. When the outdoor temperature is high, the louver and dry-side water flow switch are directly closed; when the outdoor temperature is low, the louver and dry-side water flow switch are opened.

[0055] The above is only a preferred embodiment of the present invention. For those skilled in the art, the present invention can still be modified or replaced with equivalents based on the present invention, which should be included in the scope of protection of the patent for the present invention.

Claims

1. A water-saving and mist-eliminating cooling tower device based on a micro heat pipe array, characterized in that The air-water cooler comprises a plurality of groups of air-water cooler modules, each of which comprises a heat exchange unit and a multi-porous channel parallel flow pipe. The heat exchange unit comprises a micro heat pipe array and an air-cooled fin duct attached to the outer wall of the micro heat pipe array. The multi-porous channel parallel flow pipe intersects the direction of the micro heat pipe array, and the wall of the multi-porous channel parallel flow pipe attaches to the micro heat pipe array. The portion where the micro heat pipe array attaches to the multi-porous channel parallel flow pipe is the evaporation section, and the remaining portion is the condensation section. The air-cooled fin duct leads to the dry section of the cooling tower. The multi-porous channel parallel flow pipes are arranged vertically downward, and multiple heat exchange units are attached to the side walls of each multi-porous channel parallel flow pipe and arranged side by side to form a row of heat exchange components. The micro heat pipe array is inclined upward at an angle of not less than 2° to the horizontal direction, and the condensation section is higher than the evaporation section. The inlet of the air-cooled fin duct on the evaporation section side is the air inlet side; or the multi-porous channel parallel flow pipes are arranged horizontally, the micro heat pipe array is arranged vertically, and the bottom end is attached to the multi-porous channel parallel flow pipes, the attached part is the evaporation section, and the upper unattached section is the condensation section. The walls on both sides of the condensation section are horizontally attached to the air-cooled fin ducts, and each group of multi-porous channel parallel flow pipes is collected into the main pipe through branch pipes, wherein the branch pipes at the inlet are higher than the branch pipes at the outlet; The thickness of the micro heat pipe array is 0.3-15 mm, the width is 10 mm-120 mm, and the single hole size of the air-cooling fin air duct is greater than 5 mm.

2. The device according to claim 1, characterized in that The multi-porous channel is a flat tube multi-porous channel formed by integrally extruding the parallel flow pipe, and the number of internal channels is 1-23.

3. The device according to claim 1, characterized in that The parallel flow pipes of each group of porous channels are collected into the main pipe through branch pipes.

4. The device according to claim 1, characterized in that The micro heat pipe array and the air-cooling fin air duct are connected by thermally conductive silica gel pasting or brazing.

5. A water-saving and mist-eliminating cooling tower system based on a micro heat pipe array, characterized in that The device described in any one of claims 1 to 4 is used, and the device is installed on the side wall of the upper dry section of the cooling tower. The lower part of the cooling tower is the wet section. The cooling water in the parallel flow pipes of the porous channels is pre-cooled by the device and then enters the wet section for spray cooling.

6. The system according to claim 5, characterized in that Install three-way regulating valves on the cooling water pipe branches leading to the dry section and the wet section, and / or set louver fences or rolling doors on the outside of the windward side of the equipment.

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