A heat exchange system based on porous flow guide to realize overall heat transfer enhancement in high wind environment

Abstract

The utility model discloses a kind of based on porous flow guide realizes the heat exchange system of overall heat transfer intensification in high wind environment, including air heat exchange device and porous flow guide plate;Air heat exchange device includes ventilator and air heat exchanger;Porous flow guide plate is arranged in the outer side of air inlet face, and it is the plate type structure of porosity partition design, and its total porosity satisfies 0≤η≤70%.Porous flow guide plate can block and guide flow optimization to its windward side air flow field, reduce air flow velocity, to increase the vertical air intake of air heat exchange device in the windward side area of porous flow guide plate;Air jet is formed through the ventilation jet hole of porous flow guide plate, eliminate the transverse vortex of the leeward side of flow guide plate, reduce the air intake resistance of air heat exchange device in the leeward side area of porous flow guide plate, increase air intake, to improve the air intake uniformity and heat transfer efficiency of air heat exchange device as a whole, realize the overall heat transfer intensification of heat exchange system under high wind environment.

Description

Technical Field

[0001] This utility model relates to the technical field of heat exchangers that improve heat transfer by influencing the flow pattern of the heat exchange medium, and in particular to a heat exchange system that enhances overall heat transfer in windy environments based on porous flow guidance. Background Technology

[0002] Due to the influence of ambient wind, airflow tends to circulate around the air inlet of conventional heat exchange systems. This airflow direction is approximately tangential to the air inlet, and its velocity is relatively high. This causes a greater deflection angle when external air enters the air heat exchanger through the inlet, leading to increased inlet resistance and reduced inlet flow. Furthermore, the varying deflection angles at different inlets result in uneven inlet flow distribution, affecting the overall performance of the air heat exchanger. Therefore, it is necessary to optimize the structure of existing air heat exchangers by implementing flow guidance or rectification measures on the circumferential airflow around the air inlet to improve its flow pattern, thereby enhancing vertical airflow in the affected area and improving overall airflow uniformity.

[0003] Currently, most wind deflectors installed outside the air inlet of air heat exchangers are non-perforated baffles. These baffles effectively increase the airflow into the windward area of ​​the air heat exchanger by blocking and guiding the airflow. However, when the ambient wind is blocked by the non-perforated baffle and flows around its edge, it forms a transverse vortex on the leeward side, increasing the airflow resistance and reducing the vertical airflow in that area. This results in a significant increase in the difference in airflow between the windward and leeward sides of the non-perforated baffle, thus weakening the effect of increasing the airflow on the windward side of the non-perforated baffle on improving the overall cooling performance of the air heat exchanger.

[0004] Therefore, it is necessary to provide a heat exchange system that enhances overall heat transfer in windy environments based on porous guide vanes. When ambient wind interferes with the airflow field of the heat exchange system and causes negative effects, the porous guide vanes regulate the airflow field, forcibly changing the air velocity and direction outside the air inlet of the air heat exchanger. This increases the airflow volume and enhances the overall heat transfer effect on the windward side of the heat exchanger while simultaneously reducing the weakening of the airflow volume and overall heat transfer effect on the leeward side of the heat exchanger through the porous guide vanes' vortex-eliminating properties. This results in an increase in the effective airflow volume of the air heat exchanger, improves the airflow uniformity at different circumferential inlets, and effectively enhances the overall cooling performance of the air heat exchanger. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model proposes a heat exchange system that enhances overall heat transfer in windy environments based on porous flow guidance.

[0006] The specific solution of this utility model to solve the above-mentioned existing problems is as follows: a heat exchange system based on porous flow guidance to achieve overall heat transfer enhancement in windy environments, including an air heat exchange device and a porous flow guide plate, characterized in that: the air heat exchange device includes a ventilation device and an air heat exchanger; the porous flow guide plate is a plate structure with porosity partition design, which optimizes the airflow field on the windward side and optimizes the vortex elimination of the airflow field on the leeward side, thereby improving the airflow direction and velocity in the windward and leeward sides of the porous flow guide plate, thereby reducing the air inlet resistance of the air heat exchange device near the windward and leeward sides of the porous flow guide plate, increasing the airflow rate, and achieving overall heat transfer enhancement of the heat exchange system in windy environments.

[0007] The ventilation device includes an air inlet surface, a guide shell, and a ventilation duct; the air heat exchanger is a surface heat exchanger or an evaporative heat exchanger; when the air heat exchanger is a surface heat exchanger, ambient cold air flows sequentially through the air inlet surface, the surface heat exchanger, the guide shell, and the ventilation duct; when the air heat exchanger is an evaporative heat exchanger, ambient cold air flows sequentially through the air inlet surface, the guide shell, the evaporative heat exchanger, and the ventilation duct; the air inlet surface is an empty air inlet or an air inlet louver.

[0008] The porous guide plates are arranged around the air heat exchange device. According to the degree of influence of the ambient wind on the air intake of different areas of the heat exchange system, M porous guide plates are selectively arranged in the areas where the air intake is affected, where M is an integer. When the air heat exchanger is a surface heat exchanger, 2≤M≤10; when the air heat exchanger is an evaporative heat exchanger, 2≤M≤80°. The porous guide plates are arranged on the outside of the air intake surface. The angle between the tangent of the cross-section of the porous guide plate at its leading edge and the horizontal vertical line of the air intake surface is the arrangement angle λ, where 0°≤λ≤15°.

[0009] The height of the air inlet louver is H. K The height of the porous guide plate is H, 0.1H K ≤H≤1.2H K The length of the porous guide plate is L2, and the vertical distance between the porous guide plate and the air inlet surface is L1. When the air heat exchanger is a surface heat exchanger, 4m≤L2≤10m, 0≤L1≤L2 / 3; when the air heat exchanger is an evaporative heat exchanger, 0.6m≤L2≤8m, -L2≤L1≤L2 / 3.

[0010] The perforated baffle is divided into I columns horizontally from far to near according to the distance from the air inlet louvers, where I≥1, and into J rows vertically from bottom to top, where J≥1; the number of partitions of the perforated baffle is N, where N=I×J.

[0011] The porosities of the porous guide plate are η1, η2, ..., η3, respectively. N-1 and ηN ,0≤(eta1,eta2,...,eta N-1 η N ≤70%; the zone porosity is the ratio of the area of ​​the ventilation jet holes in a certain zone to the area of ​​the zone; the total porosity η of the porous guide plate is the average porosity of the N zones, (η1+η2+……+η N ) / N,0≤η≤70%; The porous guide plate adapts to the air velocity differences at different horizontal and height positions by setting partitioned porosity; The porous guide plate achieves partitioned porosity by setting ventilation jet holes with different arrangements.

[0012] The ventilation jet holes are arranged in one or more of the following ways: array arrangement, random arrangement, and gradient arrangement. The array arrangement means that the ventilation jet holes are equally spaced on the left and right and equally spaced on the top and bottom. The random arrangement means that the ventilation jet holes are arranged at non-constant intervals. The gradient arrangement means that the ventilation jet holes are arranged in a way that gradually increases or decreases the interval in the vertical, horizontal or diagonal direction.

[0013] The equivalent diameter of the ventilation jet orifice can be set as either equal diameter or unequal diameter; the equivalent diameter refers to the diameter of a circle with the same area as the ventilation jet orifice; equal diameter means that the equivalent diameter of all ventilation jet orifices is the same; unequal diameter means that the equivalent diameter of each ventilation jet orifice is not exactly the same.

[0014] The porous guide plate is made of one or more of the following materials: galvanized steel, stainless steel, aluminum alloy, fiberglass or plastic; the shape of the porous guide plate is a flat plate or a vertically arranged arc plate; the arc β of the porous guide plate is the ratio of the length L2 to the chord length L3, satisfying 1≤β≤1.2.

[0015] The total porosity η, length L2, vertical spacing L1, height H, arc β, and arrangement tilt angle λ of the porous guide plate can all be set according to the different degrees of influence of environmental wind in different areas.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention effectively guides the circumferential airflow on the windward side of the porous guide plate, significantly increasing the vertical airflow in the windward region. Simultaneously, the airflow ejected from the ventilation jet holes effectively disrupts and eliminates the lateral vortex on the leeward side of the porous guide plate, greatly reducing the airflow resistance in this area and increasing the airflow on the leeward side. This design not only improves the overall airflow of the air heat exchange device but also effectively improves the uniformity of airflow at different circumferential positions of the air inlets, thereby enhancing the overall heat transfer performance of the system in windy conditions. Furthermore, the porous guide plate adopts a zoned design and an adjustable parameter structure, which can flexibly adapt to different environmental wind speeds and directions, possessing the advantages of reasonable structure, strong applicability, and significant effects. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a porous guide plate structure.

[0018] Figure 2 This is a schematic diagram showing the locations of surface heat exchangers, ventilation ducts, etc.

[0019] Figure 3 This is a schematic diagram of the porous guide plate in Example 1.

[0020] Figure 4 This is a schematic diagram of the arrangement of the perforated guide plate in Example 2.

[0021] Figure 5 This is a partially enlarged schematic diagram of the perforated guide plate arrangement in Example 2.

[0022] Figure 6 This is a schematic diagram of a perforated guide plate (flat plate, radius = 1).

[0023] Figure 7 This is a schematic diagram of the arrangement of the perforated guide plate in Example 3.

[0024] Figure 8 This is a partially enlarged schematic diagram of the perforated guide plate arrangement.

[0025] Figure 9 This is a schematic diagram of a perforated guide plate (arc-shaped plate, curvature > 1).

[0026] Figure 10 This is a schematic diagram showing the locations of the evaporative heat exchanger, ventilation duct, etc.

[0027] Figure 11 This is a schematic diagram showing the arrangement of multiple perforated guide plates in an evaporative heat exchanger.

[0028] In the diagram: 1—Air inlet louvers; 2—Flow guide shell; 3—Surface heat exchanger; 4—Air inlet; 5—Perforated flow guide plate; 6—Ventilation jet hole; 7—Ventilation cylinder; 8—Evaporative heat exchanger. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0030] The structures, proportions, and sizes shown in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Similarly, terms such as "upper," "lower," "left," and "right" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0031] Working principle: such as Figure 1 , Figure 2 As shown, in order to solve the adverse effects of the transverse vortex generated on the leeward side of the non-perforated baffle on the cooling performance of the air heat exchanger under strong wind conditions, a perforated guide plate (5) is added to the outside of the air heat exchanger. Under crosswind conditions, the flow direction and flow speed of the circumferential flow outside the air inlet (4) are adjusted. The ventilation jet holes (6) of the perforated guide plate (5) can allow some air to flow from the windward side of the guide plate into the leeward side, forming an air jet to eliminate the transverse vortex on the leeward side and reduce the air velocity on the leeward side. This reduces the air inlet resistance of the air heat exchanger in the leeward side area of ​​the perforated guide plate, increases the air inlet volume and optimizes the airflow organization and air inlet uniformity, ultimately improving the overall cooling performance of the air heat exchanger.

[0032] Example 1: A basic configuration suitable for medium-sized industrial heat exchange systems.

[0033] The heat exchange system includes an air heat exchange device and a porous guide plate (5); the air heat exchange device includes a ventilation device and an air heat exchanger. The ventilation device consists of an air inlet louver (1), a guide shell (2), and a ventilation duct (7). The air heat exchanger is a surface heat exchanger (3), which is composed of 12 (Z=12) cooling triangles arranged circumferentially to form a dodecagonal air-cooling platform. The system uses the natural suction force formed by the air density difference to drive the airflow. The ambient cold air enters from the air inlet louver (1), flows through the tube bundle of the surface heat exchanger (3) for heat exchange, becomes hot air, and then is collected by the guide shell (2) and finally discharged through the ventilation duct (7).

[0034] To address the adverse effects of strong winds on the air intake volume on the windward side of the air-cooled platform, five perforated baffles (5) were selectively installed around the perimeter of the system. These baffles were arranged vertically to the outside of the air intake louvers (1) in the crosswind area of ​​the ambient wind direction.

[0035] like Figure 3The porous guide plate (5) is a vertically arranged rectangular flat plate (β=1), made of weather-resistant galvanized steel. Its height H is the same as the height H of the air inlet louver. K The relationship is H = 0.8H K The porous guide plate (5) uses only one partition (I=1, J=1, N=I×J), and the total porosity is set to 45% (η=η1=45%). The vertical distance L1 between the porous guide plate (5) and the air inlet louver (1) is set to 0 meters, and its own length L2 is 1.8 meters.

[0036] The angle between the tangent at the leading edge of the cross section of the porous guide plate (5) and the horizontal vertical line of the air inlet surface is the arrangement tilt angle λ, which is adjusted according to its specific position and curvature β: taking into account the curvature β=1 of the porous guide plate (5), the arrangement tilt angle of the porous guide plate located in the crosswind area of ​​the ambient wind direction is larger (λ=15°), while the arrangement tilt angle of the porous guide plate located in the leeward area of ​​the ambient wind direction is smaller (λ=0°), so as to form a guide surface that is more in line with aerodynamics.

[0037] This basic configuration, through the flow guidance and vortex elimination effect of the porous guide plate (5), increases the air intake of the heat exchanger on the windward side of the porous guide plate and enhances the overall heat transfer effect. At the same time, the vortex elimination effect reduces the weakening of the air intake of the heat exchanger on the leeward side of the porous guide plate and the overall heat transfer effect, reduces the air intake resistance, effectively improves the air intake flow field of the heat exchange system, and significantly improves the air intake and heat exchange efficiency of the system when the ambient wind speed is high.

[0038] Example 2: Based on Example 1, the porous guide plate was designed with more refined partitioning and variable porosity. The vertical distance L1 between the porous guide plate (5) and the air inlet louver (1) was set to 0.5 meters to better adapt to the wind speed differences at different heights and positions.

[0039] like Figure 4 , Figure 5 and Figure 6 As shown, the heat exchange system in this embodiment is larger in scale, and the air heat exchanger is a surface heat exchanger (3), which is composed of 24 (Z=24) cooling triangles arranged circumferentially. A total of 7 (M=7) porous guide plates (1) are arranged around the air-cooled platform, covering a wider range.

[0040] Taking one of the perforated guide vanes (5) located in the crosswind direction of the ambient wind as an example: the perforated guide vane (5) is divided into 2 columns (I=2) in the horizontal direction according to the distance from the air inlet louver (1) from far to near; and into 3 rows (J=3) in the vertical direction from the bottom to the top. Therefore, the guide vane is divided into N=2×3=6 zones.

[0041] Considering the lower wind speed and susceptibility to interference near the ground, while the wind speed is more stable and the kinetic energy is greater at higher altitudes, the porosity of each zone is differentiated: Row J=1 (lowest row, near the ground): Higher porosity is set to reduce resistance, η1=55%, η2=50% (from the far heat exchanger side of column I=1 to the near heat exchanger side of column I=2). Row J=2 (middle row): Moderate porosity, η3=45%, η4=40%. Row J=3 (upper row): This area has the greatest wind energy, so a lower porosity is used to provide stronger flow guidance and equalization effects, η5=35%, η6=30%. The total porosity η of the plate is (55%+50%+45%+40%+35%+30%) / 6 = 42.5%, satisfying the requirement of 0≤η≤70%.

[0042] The arrangement angle λ of the porous guide plate (5) is adjusted according to its specific position and arc β: taking into account the arc β=1 of the porous guide plate (5), the arrangement angle of the porous guide plate located in the crosswind area of ​​the ambient wind direction is larger (λ=15°), while the arrangement angle of the porous guide plate located in the leeward area of ​​the ambient wind direction is smaller (λ=0°), so as to form a guide surface that is more in line with aerodynamics.

[0043] The ventilation jet holes (6) are arranged in an array in all zones, with equal spacing between the holes on the left and right and up and down, making them easy to process. All ventilation jet holes are set with equal diameter, with an equivalent diameter of 50mm.

[0044] Through this "sparse at the bottom and dense at the top" variable porosity design, the porous guide plate (5) can more intelligently guide the airflow at different heights, while reducing the negative impact of strong winds at high altitudes and promoting air intake in the bottom area. This achieves the balance and enhancement of the airflow on the windward side of the entire porous guide plate (5), and the overall heat transfer enhancement effect is better than that of the uniform porosity design.

[0045] Example 3: An arc-shaped guide vane optimized by combining multiple parameters.

[0046] like Figure 7 , Figure 8 and Figure 9 As shown, the air heat exchanger of this system is a surface heat exchanger (3), which consists of 280 (Z=280) cooling triangles arranged circumferentially. In the crosswind side area of ​​the ambient wind direction, 4 (M=4) porous guide plates (5) are symmetrically arranged.

[0047] In this example, the perforated guide vane (5) adopts an arc-shaped plate design (β=1.03). This arc-shaped structure can guide the crosswind to the leeward side of the guide vane more smoothly, producing a more significant guiding and vortex-eliminating effect.

[0048] The arrangement angle λ of the perforated guide plate (5) is adjusted according to its specific position and arc β: taking into account the arc β of the perforated guide plate (5) = 1.03, the arrangement angle λ of the perforated guide plate (5) is set to λ = 8° to form a guide surface that is more in line with aerodynamics.

[0049] In terms of pore design, a gradual arrangement is adopted. The ventilation jet holes are arranged with a gradually decreasing spacing (i.e., a gradually increasing pore density) in the vertical direction, transitioning from a sparse arrangement at the bottom of the plate to a dense arrangement at the top, achieving a variable porosity effect similar to Example 2, but with a more continuous processing technology. Simultaneously, the ventilation jet holes are set with varying diameters, using larger diameter holes (equivalent diameter 60mm) in the central region of the plate to ensure flow capacity, and smaller diameter holes (equivalent diameter 40mm) in the edge region to optimize the flow field.

[0050] The porous guide plate (5) is made of lightweight and corrosion-resistant aluminum alloy.

[0051] This embodiment optimizes the curvature (β), tilt angle (λ), pore arrangement (gradual change), and aperture (different diameter) of the guide vane. While increasing the air intake and enhancing the overall heat transfer effect of the heat exchanger on the windward side of the perforated guide vane, it also reduces the weakening of the air intake and overall heat transfer effect of the heat exchanger on the leeward side of the perforated guide vane by eliminating vortices through the perforation. This maximizes the utilization and conversion of ambient wind energy and achieves the ultimate enhancement of the overall heat transfer performance of the heat exchange system in windy conditions, demonstrating optimal comprehensive performance.

[0052] Example 4: An evaporative heat exchange system with enhanced heat transfer achieved by a flat plate porous guide plate.

[0053] like Figure 10 As shown, the heat exchange system includes an air heat exchange device and a porous guide plate (5); the air heat exchange device includes a ventilation device and an air heat exchanger. The ventilation device consists of an air inlet surface, a guide shell (2) and a ventilation duct (7); the air heat exchanger is an evaporative heat exchanger (8). The air inlet surface is an empty air inlet (4). The system uses the natural suction force formed by the air density difference to drive the airflow. The ambient cold air enters from the air inlet, flows through the evaporative heat exchanger (8) for heat exchange, and becomes hot air before being discharged through the ventilation duct (7).

[0054] To address the adverse effects of strong winds on the windward air intake, two perforated baffles (5) were selectively installed around the perimeter of the system (M=2). These baffles were arranged vertically to the ground on the outer side of the air intake surface in the crosswind area of ​​the ambient wind direction.

[0055] The perforated guide plate (5) is a vertically arranged rectangular flat plate (β=1), made of weather-resistant galvanized steel. Its height H is the same as the height H of the air inlet (4). KThe relationship is H = 1.2H K The porous guide plate (5) is divided into 6 sections (I=3, J=2, N=I×J=6), and the total porosity is set to (15%+10%+15%+5%+10%+5%) / 6=10%. The vertical distance L1 between the porous guide plate (5) and the air inlet surface is set to -0.45 meters (that is, the leading edge of the porous guide plate (5) is located inside the outer edge of the guide shell (2), and its own length L2 is 1.5 meters.

[0056] The angle between the tangent at the leading edge of the cross section of the porous guide plate (5) and the horizontal vertical line of the air inlet surface is the arrangement angle λ, and the arrangement angle of the two porous guide plates (5) is 0°.

[0057] Example 5: Heat exchange system of evaporative heat exchanger with multiple porous guide plates.

[0058] Based on Example 4, such as Figure 11 As shown, the structure of the perforated guide plate (5) is rearranged, and a smaller size is selected. 720 perforated guide plates are arranged around the air inlet (4). The perforated guide plate (5) has L2=0.6m and L1=-0.6m. That is, the perforated guide plate is completely arranged below the guide shell (2), and its outermost edge is flush with the outer edge of the guide shell (2).

[0059] The porous guide plates (5) are all single-zoned with a porosity of 5% and an arrangement angle of 0°.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to encompass all variations falling within the meaning and scope of equivalents of the claims within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heat exchange system for enhancing overall heat transfer in high-wind environments based on porous flow guides, comprising an air heat exchange device and a porous flow guide plate, characterized in that: The air heat exchange device includes a ventilation device and an air heat exchanger; the porous guide plate is a plate structure with a porosity partition design. The plate structure with a porosity partition design optimizes the airflow field on the windward side and optimizes the airflow field on the leeward side, thereby improving the airflow direction and velocity in the windward and leeward sides of the porous guide plate. This reduces the air inlet resistance of the air heat exchange device near the windward and leeward sides of the porous guide plate, increases the airflow, and achieves overall heat transfer enhancement of the heat exchange system under high wind conditions.

2. The heat exchange system for enhancing overall heat transfer in high-wind environments based on porous flow guidance according to claim 1, characterized in that: The ventilation device includes an air inlet surface, a guide shell, and a ventilation duct; the air heat exchanger is a surface heat exchanger or an evaporative heat exchanger; when the air heat exchanger is a surface heat exchanger, ambient cold air flows sequentially through the air inlet surface, the surface heat exchanger, the guide shell, and the ventilation duct; when the air heat exchanger is an evaporative heat exchanger, ambient cold air flows sequentially through the air inlet surface, the guide shell, the evaporative heat exchanger, and the ventilation duct; the air inlet surface is an empty air inlet or an air inlet louver.

3. A heat exchange system for enhancing overall heat transfer in high-wind environments based on porous flow guidance, as described in claim 2, is characterized in that: The porous guide plates are arranged around the air heat exchange device. According to the degree of influence of the ambient wind on the air intake of different areas of the heat exchange system, M porous guide plates are selectively arranged in the areas where the air intake is affected, where M is an integer. When the air heat exchanger is a surface heat exchanger, 2≤M≤10; when the air heat exchanger is an evaporative heat exchanger, 2≤M≤80°. The porous guide plates are arranged on the outside of the air intake surface. The angle between the tangent of the cross-section of the porous guide plate at its leading edge and the horizontal vertical line of the air intake surface is the arrangement angle λ, where 0°≤λ≤15°.

4. A heat exchange system for enhancing overall heat transfer in high-wind environments based on porous flow guidance, as described in claim 2, is characterized in that: The height of the air inlet surface is H. K The height of the porous guide plate is H, 0.1H K ≤H≤1.2H K The length of the porous guide plate is L2, and the vertical distance between the porous guide plate and the air inlet surface is L1. When the air heat exchanger is a surface heat exchanger, 4m≤L2≤10m, 0≤L1≤L2 / 3; when the air heat exchanger is an evaporative heat exchanger, 0.6m≤L2≤8m, -L2≤L1≤L2 / 3.

5. A heat exchange system for enhancing overall heat transfer in high-wind environments based on porous flow guidance, as described in claim 2, is characterized in that: The porous guide plate is divided into I columns horizontally from far to near according to the distance from the air inlet surface, where I≥1, and into J rows vertically from bottom to top, where J≥1; the number of partitions of the porous guide plate is N, where N=I×J.

6. A heat exchange system for enhancing overall heat transfer in high-wind environments based on porous flow guidance, as described in claim 5, is characterized in that: The porosities of the porous guide plate are η1, η2, ..., η3, respectively. N-1 and η N ,0≤(eta1,eta2,...,eta N-1 η N ≤70%; the zone porosity is the ratio of the area of ​​the ventilation jet holes in a certain zone to the area of ​​the zone; the total porosity η of the porous guide plate is the average porosity of the N zones, (η1+η2+……+η N ) / N,0≤η≤70%; The porous guide plate adapts to the air velocity differences at different horizontal and height positions by setting partitioned porosity; The porous guide plate achieves partitioned porosity by setting ventilation jet holes with different arrangements.

7. A heat exchange system for enhancing overall heat transfer in high-wind environments based on porous flow guidance, as described in claim 6, is characterized in that: The ventilation jet holes are arranged in one or more of the following ways: array arrangement, random arrangement, and gradient arrangement. The array arrangement means that the ventilation jet holes are equally spaced on the left and right and equally spaced on the top and bottom. The random arrangement means that the ventilation jet holes are arranged at non-constant intervals. The gradient arrangement means that the ventilation jet holes are arranged in a way that gradually increases or decreases the interval in the vertical, horizontal or diagonal direction.

8. A heat exchange system for enhancing overall heat transfer in high-wind environments based on porous flow guidance, as described in claim 6, is characterized in that: The equivalent diameter of the ventilation jet orifice can be set as either equal diameter or unequal diameter; the equivalent diameter refers to the diameter of a circle with the same area as the ventilation jet orifice; equal diameter means that the equivalent diameter of all ventilation jet orifices is the same; unequal diameter means that the equivalent diameter of each ventilation jet orifice is not exactly the same.

9. A heat exchange system for enhancing overall heat transfer in high-wind environments based on porous flow guidance, as described in claim 4, characterized in that: The porous guide plate is made of one or more of the following materials: galvanized steel, stainless steel, aluminum alloy, fiberglass or plastic; the shape of the porous guide plate is a flat plate or a vertically arranged arc plate; when the porous guide plate is an arc plate, its arc β is the ratio of length L2 to chord length L3, satisfying 1≤β≤1.

2.

10. A heat exchange system for enhancing overall heat transfer in high-wind environments based on porous flow guidance, as described in claim 9, characterized in that: The total porosity η, length L2, vertical spacing L1, height H, arc β, and arrangement tilt angle λ of the porous guide plate can all be set according to the different degrees of influence of environmental wind in different areas.

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