Heat exchanger, aerospace radiation angle model and heat exchange efficiency evaluation method

Abstract

The invention discloses a heat exchanger, an aerospace radiation angle model and a heat exchange efficiency evaluation method. The heat exchanger comprises a main body part and fins. The main body part is provided with a hollow cavity, a flow guide channel is arranged in the hollow cavity, and the main body part is provided with an inlet and an outlet which are communicated with the flow guide channel. The fins are connected to the two opposite sides of the main body part and protrude out of the main body part in the opposite directions. In the protruding direction of the fins, the thickness of the sides, away from the main body part, of the fins is smaller than that of the sides, close to the main body part, of the fins. Natural convection and aerospace radiation refrigeration can be coupled, the heat dissipation efficiency is improved, and the urban heat island effect is relieved.

Description

Technical Field

[0001] The present invention relates to the fields of building energy management and thermal energy utilization, and in particular to a heat exchanger, an air-space radiation angle model, and a heat exchange efficiency evaluation method. Background Art

[0002] As the power density of modern industrial equipment and electronic devices continues to increase, efficient heat dissipation has become a key factor in ensuring stable equipment operation. Currently, widely used heat dissipation devices, such as air-cooled heat exchangers, finned heat exchangers, and fan-assisted cooling systems, primarily rely on natural or forced convection to dissipate heat directly into the surrounding environment. However, these traditional heat dissipation methods have many limitations.

[0003] Traditional heat exchangers rely primarily on convection to dissipate heat, releasing large amounts of waste heat directly into the atmosphere. This creates significant thermal pollution in localized areas, exacerbating the urban heat island effect and impacting the ecological environment and residents' quality of life. Furthermore, due to factors such as the low thermal conductivity of air and limited heat transfer efficiency, conventional convection cooling methods struggle to meet the growing demand for heat dissipation in high-heat flux density applications, leading to increased equipment temperatures, decreased stability, and even safety hazards. Summary of the Invention

[0004] The main purpose of this invention is to propose a heat exchanger, an air-space radiation angle model and a heat exchange efficiency evaluation method, which can couple natural convection and air-space radiation cooling to improve heat dissipation efficiency and alleviate the urban heat island effect.

[0005] To achieve the above objectives, some embodiments of the present invention provide a heat exchanger, comprising: The main body has a hollow chamber, a flow guide channel is provided in the hollow chamber, and the main body is provided with an inlet and an outlet, both of which are connected to the flow guide channel; Fins are connected to opposite sides of the main body and protrude from the main body in opposite directions; Wherein, along the protruding direction of the fin, the thickness of the side of the fin away from the main body is smaller than the thickness of the side close to the main body.

[0006] In some embodiments, the fins are spaced apart in the vertical direction.

[0007] In some embodiments, the fins protrude from the main body in a horizontal direction.

[0008] In some embodiments, along the vertical direction, the thickness of the fin gradually increases from the side of the fin away from the main body to the side close to the main body.

[0009] In some embodiments, the area of ​​the fin cut by the vertical plane is an isosceles triangle; and / or, The fins are conical with a slope ranging from 2.7 to 3.7.

[0010] In some embodiments, the length of the fin along the protruding direction is y, the distance from the fin to the adjacent fin below it is d, and the relationship between y and d satisfies: y=pd, where p is in the range of 0.8≤p≤1.2.

[0011] In some embodiments, the outlet is located vertically below the inlet.

[0012] In some embodiments, a plurality of isolation modules are provided in the hollow chamber at intervals, and the plurality of isolation modules divide the diversion channel into a plurality of diversion branches, and the plurality of diversion branches are interconnected.

[0013] In some embodiments, the cross section of the main body cut by a vertical plane is rectangular, the fin protrudes along the thickness direction of the main body, and the relationship between the length a, width b, and thickness c of the main body satisfies: 70c≤b≤a.

[0014] The embodiment of the second aspect of the present invention provides a heat dissipation system, comprising any of the above-mentioned heat exchangers, wherein the heat dissipation system comprises at least two heat exchangers distributed opposite to each other, wherein the distance between the main bodies of the two heat exchangers along the direction from one heat exchanger to the other heat exchanger is 2l The vertical height of the main body is h , the length of the fin along the protruding direction is y satisfy: y=q[h / (lm)x-hm / (1-m)] , q The range is 0.8≤q≤1.2 .

[0015] An embodiment of the third aspect of the present invention provides a calculation model of a heat exchanger system and a sky-sky radiation angle, which is used for a heat exchanger system in which the sun partially irradiates the heat exchanger system. The embodiment is characterized in that the heat exchanger system includes the heat dissipation system of claim 10, and the calculation model of the heat exchanger system and the sky-sky radiation angle has S3 and S5 surfaces corresponding to two adjacent heat exchangers, and S1 and S2 surfaces parallel to and spaced apart from each other and sandwiched between the S3 and S5 surfaces. The S6 surface is coplanar with the S2 surface, and the S6 surface is located between the S3 and S2 surfaces. The S6 surface and the S3 surface are suitable for being irradiated by the sun. The S3, S1, S5, S2 and S6 surfaces are connected end to end in sequence, and their outlines cut by vertical planes form a parallelogram. The calculation model of the heat exchanger system and the sky-sky radiation angle includes at least one of the following relationships: X 1,2 is the percentage of heat radiated from surface S1 that falls on surface S2, ; and / or, X 1,3is the percentage of heat radiated from surface S1 that falls on surface S3, ; and / or, X 1,5 is the percentage of heat radiated from surface S1 that falls on surface S5, ; and / or, X 1,6 is the percentage of heat radiated from surface S1 that falls on surface S6, ; and / or, X 2,3 is the percentage of heat radiated from surface S2 that falls on surface S3, ; and / or, X 2,5 is the percentage of heat radiated from surface S2 that falls on surface S5, ; and / or, X 3,5 is the percentage of heat radiated from surface S3 that falls on surface S5, ; and / or, X 3,6 is the percentage of heat radiated from surface S3 that falls on surface S6, ; and / or, X 5,6 is the percentage of heat radiated from the S5 surface falling on the S6 surface, ; in, is the spacing of the heat exchanger 2l and height h The ratio of .

[0016] An embodiment of the fourth aspect of the present invention proposes a calculation model of a heat exchanger system and a sky-sky radiation angle, which is used for the sun to fully illuminate the heat exchanger system, and is characterized in that it includes the heat dissipation system of claim 10, and the calculation model of the heat exchanger system and the sky-sky radiation angle has two corresponding adjacent heat exchangers, one of which corresponds to the S5 surface, and the other corresponds to the S3 surface and the S4 surface, the S3 surface and the S4 surface are coplanar, wherein the S3 surface can be illuminated by the sun, and the S4 surface is not illuminated by the sun, the S1 surface is sandwiched between the S3 surface and the S5 surface, and the S2 surface is sandwiched between the S4 surface and the S5 surface, and the S4 surface, the S3 surface, the S1 surface, the S5 surface and the S2 surface are connected end to end in sequence, and their outlines cut by vertical planes form a parallelogram, and the calculation model of the heat exchanger system and the sky-sky radiation angle includes at least one of the following relationships: X 1,2 is the percentage of heat radiated from surface S1 that falls on surface S2, ; and / or, X 1,3 is the percentage of heat radiated from surface S1 that falls on surface S3, ; and / or, X 1,4 is the percentage of heat radiated from surface S1 that falls on surface S4, ; and / or, X 1,5 is the percentage of heat radiated from surface S1 that falls on surface S5, ; and / or, X 2,3 is the percentage of heat radiated from surface S2 that falls on surface S3, ; and / or, X 2,4 is the percentage of heat radiated from surface S2 that falls on surface S4, ; and / or, X 2,5 is the percentage of heat radiated from surface S2 that falls on surface S5, ; and / or, X 3,5 is the percentage of heat radiated from surface S3 that falls on surface S5, ; and / or, X 4,5 is the percentage of heat radiated from the S4 surface falling on the S5 surface, ; in, is the spacing of the heat exchanger 2l and height h The ratio of ; ; ; .

[0017] An embodiment of the fifth aspect of the present invention provides a method for evaluating the efficiency of a heat dissipation system, comprising a calculation model of the heat exchanger system and the sky-to-sky radiation angle according to any one of the above items.

[0018] According to the above embodiments, the beneficial effects of the present invention are: The heat exchanger of the present invention includes a main body and fins. The main body serves as the base of the heat exchanger and is used to set the guide channel and connect the fins. The main body can be made of aluminum alloy material, which has good thermal conductivity and lightweight characteristics. In some embodiments, the main body is a thinner plate, such as a plate with a length of 1m, a width of 1m, and a thickness of 1cm. The main body has a hollow chamber, and a guide channel is provided in the hollow chamber to promote the flow of fluid inside and improve the heat exchange efficiency. The main body is provided with an inlet and an outlet, and the inlet and the outlet are both connected to the guide channel. Specifically, the inlet and the outlet are connected to the guide channel and the external environment to ensure that the fluid can enter and exit smoothly, so as to facilitate the heat exchange of the heat exchanger.

[0019] The fins are connected to opposite sides of the main body and protrude from the main body in opposite directions. Along the protruding direction of the fins, the thickness of the fins on the side away from the main body is thinner than the thickness on the side closer to the main body. The thinner fins on the side away from the main body help heat transfer to the external surface more quickly, improving surface temperature uniformity and thus enhancing radiation capacity. Furthermore, this design not only increases the structural stability of the heat exchanger but also optimizes the heat transfer path, allowing heat to be more evenly distributed across the fin surface, thereby achieving efficient heat dissipation through natural convection and radiation cooling.

[0020] In summary, the heat exchanger of the present invention realizes the efficient coupling of natural convection and air-space radiation cooling through the coordinated structural design of the main body and the fins. A guide channel is set inside the main body to promote the natural flow of air in the hollow chamber and enhance the convective heat transfer efficiency. At the same time, the fins are designed to be gradiently thinned in the vertical direction, which not only increases the heat dissipation surface area, but also optimizes the heat transfer path to the surface, so that the heat is more evenly distributed on the outer surface of the fins, thereby improving its ability to emit infrared radiation to the sky and enhancing the air-space radiation cooling effect. The combination of the two enables the heat exchanger to significantly improve the overall heat dissipation efficiency without the need for additional energy consumption. In addition, when the device is applied to a building, it can effectively reduce the surface temperature of the building and reduce the heat emission to the environment, thereby alleviating the heat island effect caused by dense buildings on an urban scale, and has good ecological benefits. Therefore, the heat exchanger of the present invention has a simple and reliable structure, a small unit footprint, can effectively utilize the air-space radiation cooling process, does not require additional energy consumption, significantly reduces building energy consumption and environmental heat hazards, and has good economy and practicality.

[0021] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 A schematic structural diagram of a heat dissipation system according to an embodiment of the present invention, comprising two correspondingly arranged heat exchangers; Figure 2 is a schematic diagram of the three-dimensional structure of a heat exchanger observed along a first viewing angle in one embodiment of the present invention; Figure 3 is a schematic diagram of the three-dimensional structure of a heat exchanger observed from a second viewing angle in one embodiment of the present invention; Figure 4 is a schematic diagram of the three-dimensional structure of a heat exchanger observed from a third viewing angle in one embodiment of the present invention; Figure 5 is a schematic diagram of the three-dimensional structure of a heat exchanger observed along a fourth viewing angle in one embodiment of the present invention; Figure 6 is a schematic diagram of a cross-sectional structure of a heat exchanger cut by a first plane in one embodiment of the present invention; Figure 7is a schematic diagram of a cross-sectional structure of a heat exchanger cut by a second plane in one embodiment of the present invention; Figure 8 is a schematic diagram of a cross-sectional structure of a heat exchanger cut by a third plane in one embodiment of the present invention; Figure 9 To observe from another perspective Figure 8 Schematic diagram of the cross-section structure of the heat exchanger; Figure 10 Schematic diagram of different operating conditions corresponding to the calculation model of the heat exchanger system and the sky-space radiation angle in one embodiment of the present invention.

[0024] Description of Figure Numbers: Heat exchanger 10; Main body 100; guide channel 110; isolation module 120; outlet 130; inlet 140; Fin 200; Vertical direction Y; horizontal direction X.

[0025] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or", "and / or" or "and / or" appear in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0029] In the related art, the heat exchanger 10 mainly relies on convection heat dissipation, directly discharging the building waste heat into the environment, resulting in an aggravated urban heat island effect, and the heat exchanger 10 structural design fails to effectively couple air-space radiation cooling with natural convection.

[0030] Reference below Figures 1 to 10 The heat exchanger 10, the heat dissipation system, the calculation model of the heat exchanger system and the sky-space radiation angle, and the heat dissipation system efficiency evaluation method according to the embodiment of the present invention are described. The present invention belongs to the field of building energy management and thermal energy utilization, and in particular relates to the structural design of the heat exchanger 10 that combines natural convection with sky-space radiation cooling. Figures 1 to 9 In some embodiments, the heat exchanger 10 of the present invention includes a main body 100 and fins 200. The main body 100 serves as the base of the heat exchanger 10 and is used to set the guide channel 110 and connect the fins 200. The main body 100 can be made of aluminum alloy material, which has good thermal conductivity and lightweight characteristics. In some embodiments, the main body 100 is a thinner plate, for example, a plate with a length of 1m, a width of 1m, and a thickness of 1cm. The main body 100 has a hollow chamber, and the guide channel 110 is provided in the hollow chamber to promote the flow of fluid inside and improve the heat exchange efficiency. The main body 100 is provided with an inlet 140 and an outlet 130, and the inlet 140 and the outlet 130 are both connected to the guide channel 110. Specifically, the inlet 140 and the outlet 130 connect the guide channel 110 and the external environment to ensure that the fluid can enter and exit smoothly, so as to facilitate the heat exchange of the heat exchanger 10.

[0031] The fins 200 are connected to opposite sides of the main body 100 and protrude from the main body 100 in opposite directions. Among them, along the protruding direction of the fins 200, the thickness of the side of the fins 200 away from the main body 100 is less than the thickness of the side close to the main body 100. Regarding the thickness of the fins 200, it can be understood that the protruding direction of the fins 200 is its length direction, and the direction perpendicular to this direction is the thickness direction of the fins 200. The side of the fins 200 away from the main body 100 is thinner, which helps to transfer heat to the outer surface faster, improve the uniformity of the surface temperature, and thus enhance the radiation capacity. In addition, this design not only increases the structural stability of the heat exchanger 10, but also optimizes the heat transfer path, so that the heat can be more evenly distributed to the surface of the fins 200, thereby achieving efficient heat dissipation through natural convection and radiation cooling.

[0032] In summary, the heat exchanger 10 of the present invention realizes the efficient coupling of natural convection and air-space radiation cooling through the coordinated structural design of the main body 100 and the fins 200. A guide channel 110 is provided inside the main body 100 to promote the natural flow of air in the hollow chamber and enhance the convective heat transfer efficiency. At the same time, the fins 200 are designed to be gradiently thinned along the vertical direction Y, which not only increases the heat dissipation surface area, but also optimizes the heat transfer path to the surface, so that the heat is more evenly distributed on the outer surface of the fins 200, thereby improving its ability to emit infrared radiation to the sky and enhancing the air-space radiation cooling effect. The combination of the two enables the heat exchanger 10 to significantly improve the overall heat dissipation efficiency without the need for additional energy consumption. In addition, when the device is applied to a building, it can effectively reduce the surface temperature of the building and reduce the heat emission to the environment, thereby alleviating the heat island effect caused by dense buildings on an urban scale, and has good ecological benefits. Therefore, the heat exchanger 10 of the present invention has a simple and reliable structure, a small unit footprint, can effectively utilize the air-space radiation cooling process, does not require additional energy consumption, significantly reduces building energy consumption and environmental thermal hazards, and has good economy and practicality.

[0033] It is understandable that, in some embodiments, in order to further enhance the heat dissipation effect, the main body 100 can be made of copper, which has a higher thermal conductivity than aluminum alloy. For example, when using a copper main body 100, the internal guide channel 110 can be designed to be spiral, which not only increases the path length of the fluid flow, but also improves the heat exchange efficiency between the fluid and the inner wall of the main body 100. For the fin 200 part, in some embodiments, tiny protrusions or textures can be added to its surface to disrupt the air flow and form more turbulent areas, thereby enhancing the heat exchange between the air and the fin 200. For example, a series of parallel grooves can be machined on the surface of the fin 200. The direction of these grooves is perpendicular to the direction of fluid flow. When air passes through, local vortices are formed, which effectively improves the heat dissipation efficiency.

[0034] Reference Figures 2 to 5 In some embodiments, the fins 200 are designed to be distributed at intervals when viewed along the vertical direction Y. This layout not only helps to optimize the air circulation path, but also ensures that each fin 200 can obtain sufficient air flow, maximizing the use of natural convection for heat dissipation. Specifically, since there is a certain distance between the fins 200, this allows the air to form an effective airflow channel when entering between adjacent fins 200, promoting the rapid dissipation of heat from the surface of the fins 200. In addition, this spacing arrangement also helps to prevent the problem of increased air flow resistance caused by the fins 200 being too dense, thereby ensuring the working efficiency of the entire heat exchanger 10. Combined with the design of the guide channel 110 inside the main body 100, this spaced fin 200 structure significantly improves the overall performance of the heat exchanger 10, achieves a high-efficiency heat dissipation effect, and maintains low operating costs and maintenance requirements.

[0035] It will be appreciated that in some embodiments, the spacing between fins 200 can be adjusted based on actual application requirements. For example, in applications requiring higher heat dissipation efficiency, the distance between fins 200 can be reduced while simultaneously increasing the height or width of fins 200 to maintain sufficient airflow. Another expansion solution is to introduce fins 200 with different shapes, such as wavy fins 200. This design not only increases the surface area but also further disrupts the air flow, creating more turbulent areas, thereby improving heat dissipation efficiency.

[0036] It is understandable that in some embodiments, a high reflectivity coating may be applied to the surface of the fin 200 to enhance the effect of space radiation cooling, thereby reducing heat absorption by reflecting solar radiation and achieving a better cooling purpose.

[0037] Reference Figures 2 to 5 In some embodiments, the fins 200 of the heat exchanger 10 are designed to protrude from the main body 100 along the horizontal direction X. This structural design not only maximizes space utilization and increases air contact area, thereby improving heat dissipation efficiency, but also allows multiple heat exchangers 10 to work in coordination.

[0038] In some embodiments, different materials are used to manufacture different parts of the fin 200. For example, a copper alloy with high thermal conductivity is used on the side close to the main body 100, while a lightweight aluminum alloy with good mechanical strength is used on the side away from the main body 100. This ensures efficient heat conduction while reducing overall weight. In some embodiments, a high-thermal-conductivity ceramic material is used for the core of the fin 200, while a metal shell with good corrosion resistance is used on the outside. This not only improves heat conduction efficiency but also extends service life.

[0039] Reference Figures 2 to 5 In some embodiments, the fins 200 of the heat exchanger 10 are designed to have a gradually increasing thickness along the vertical direction Y. That is, the thickness of the fins 200 gradually increases from the side away from the main body 100 to the side close to the main body 100. This design helps to optimize the heat transfer path so that heat can flow more concentratedly to the thicker part of the fins 200, thereby achieving efficient heat dissipation through natural convection and radiation cooling. Specifically, when heat diffuses from the main body 100 to both sides, due to the change in the thickness of the fins 200, the heat will tend to be concentrated in the position close to the main body 100, where the temperature is higher, which is conducive to accelerating the dissipation of heat. At the same time, the thinner end portion of the fin 200 also helps to reduce air resistance, promote air circulation, and further improve the heat dissipation efficiency. This structural design not only enhances the heat dissipation capacity but also maintains good economy.

[0040] It is understood that in some embodiments, to further enhance heat dissipation, the thickness variation pattern of the fins 200 can be adjusted. For example, in addition to a linearly increasing thickness variation, a nonlinear thickness distribution pattern, such as a parabolic or exponential growth pattern, can be employed to more precisely control the heat transfer path. Such a design can optimize heat distribution based on specific heat dissipation requirements, allowing heat to be dissipated more evenly.

[0041] Reference Figures 2 to 5 In some embodiments, the area of ​​the fin 200 of the heat exchanger 10 that is intercepted by the vertical plane is an isosceles triangle. This design not only increases the air circulation area, but also maximizes the heat dissipation efficiency within a limited space. Specifically, when air flows through the fin 200, due to its isosceles triangle shape, the air will form a relatively uniform flow path on the surface of the fin 200, reducing air resistance and allowing heat to be dissipated more effectively through natural convection and radiation cooling. In addition, the isosceles triangle design can also enable the fin 200 to achieve a gradual change in thickness from thin to thick, which helps to guide heat to concentrate on the thicker part, thereby improving the overall heat dissipation performance.

[0042] The main body 100 is internally provided with a flow channel 110, which connects to the inlet 140 and outlet 130, ensuring smooth flow of a medium (such as coolant). After entering the main body 100, the medium is distributed to various parts through the flow channel 110, removing heat and transferring it to the surface of the fins 200 for dissipation. The isosceles triangle structure of the fins 200 further enhances the heat dissipation effect. The thicker side, closer to the main body 100, better conducts heat, while the thinner side facilitates air circulation and reduces thermal resistance.

[0043] Reference Figures 2 to 5The fin 200 is conical, and its slope range is 2.7~3.7, for example, 2.7, 3.0, 3.125, 3.3, 3.7, preferably 3.125, to achieve the best heat dissipation effect.

[0044] It is understood that in some embodiments, in addition to using isosceles triangles, other geometric shapes can also be considered to further optimize heat dissipation performance. For example, the fins 200 can be designed to be trapezoidal or fan-shaped. For the trapezoidal fins 200, the larger base is located on the side close to the main body 100. This design also helps to concentrate heat conduction and can provide more surface area for heat dissipation. For example, for the fan-shaped fins 200, the heat dissipation efficiency can be adjusted by changing the angle of the fan, which is particularly advantageous in application scenarios where directional heat dissipation is required.

[0045] Reference Figure 1 In some embodiments, the length of the fin 200 of the heat exchanger 10 along the protruding direction is y, and the distance from the fin 200 to the adjacent fin 200 below it is d. The relationship between y and d satisfies: y=pd, where the range of p is 0.8≤p≤1.2, for example, p is 0.8, 0.9, 1.0, 1.1, 1.2, and preferably p is 1, that is, the length y of the fin 200 of the heat exchanger 10 along the protruding direction is equal to the distance d from the fin 200 to the adjacent fin 200 below it. This design ensures that the spacing between the fins 200 is moderate, neither too dense to obstruct air circulation nor too sparse to affect heat dissipation efficiency. Specifically, when the p value is close to 1, a balance is reached between the length and spacing of the fins 200, which helps to form an optimal air circulation path and promote effective heat dissipation. When the p value is less than 1, the distance between the fins 200 is larger, which is suitable for occasions that require rapid heat dissipation; when the p value is greater than 1, the distance between the fins 200 is smaller, which is suitable for applications where space is limited but a higher heat dissipation density is required. The guide channel 110 inside the main body 100 cooperates with the fins 200 to work together to achieve efficient heat dissipation. During the flow of the medium in the guide channel 110, the heat is brought to the surface of the fins 200, and then heat is exchanged with the surrounding environment through the fins 200. The reasonable layout and size ratio of the fins 200 ensure that the heat can be dissipated quickly and evenly, thereby effectively utilizing the air-space radiation cooling process to reduce building energy consumption and environmental heat hazards.

[0046] It will be appreciated that in some embodiments, the ratio of fin length y to fin spacing d can be adjusted to suit different application scenarios. For example, in high-temperature environments, the value p can be appropriately increased to reduce the spacing between fins 200, thereby increasing the heat dissipation capacity per unit area. Conversely, in low-temperature environments, the value p can be reduced and the spacing between fins 200 can be increased to reduce air resistance and improve heat dissipation efficiency.

[0047] It is understood that in some embodiments, an adjustable fin 200 design is introduced, whereby the length or spacing of the fins 200 is dynamically adjusted based on actual operating conditions. For example, a mechanical device or intelligent control system can monitor ambient temperature and heat dissipation requirements in real time, automatically adjusting the position or configuration of the fins 200 to achieve optimal heat dissipation. For example, in certain high-performance computing devices, the state of the heat exchanger 10 can be dynamically adjusted based on the processor workload to ensure that it always remains within the optimal operating temperature range.

[0048] Reference Figure 2 as well as Figures 6 to 8 In some embodiments, the main body 100 of the heat exchanger 10 is provided with an inlet 140 and an outlet 130, wherein the outlet 130 is located below the inlet 140 along the vertical direction Y. This layout design helps to utilize the principle of natural convection so that the cooling medium flows naturally under the action of gravity. Specifically, when the cooling medium enters the main body 100 through the inlet 140, it first contacts the top area. As heat is absorbed, the temperature rises, the density decreases, and the cooling medium gradually rises and eventually flows to the outlet 130 at the bottom. Since the outlet 130 is located below the inlet 140, this layout enables the cooling medium to flow naturally downward along the guide channel 110 inside the main body 100, without the need for an additional power device to drive the medium circulation, thereby achieving energy-free and efficient heat dissipation.

[0049] The design of the guide channel 110 inside the main body 100 and the fins 200 cooperate with each other to jointly improve the heat dissipation efficiency. The thickness of the side of the fin 200 away from the main body 100 is less than the side close to the main body 100, forming a gradient structure from thin to thick. This design not only increases the air circulation area, but also improves the heat conduction efficiency. When the cooling medium passes through the guide channel 110, it transfers heat to the fins 200, and the fins 200 dissipate the heat through natural convection and air-to-space radiation cooling. Therefore, the entire heat dissipation system can effectively reduce building energy consumption and environmental heat hazards without consuming additional energy, and has good economy and practicality.

[0050] It will be appreciated that in some embodiments, the specific location and shape of inlet 140 and outlet 130 can be adjusted to further optimize heat dissipation. For example, inlet 140 can be designed in a trumpet or funnel shape to increase air intake and reduce fluid resistance. Furthermore, a sump or collection pipe can be provided at outlet 130 to facilitate the recovery and reuse of the cooling medium. This improvement not only improves the overall heat dissipation performance of the system but also reduces resource waste.

[0051] It is understood that in some embodiments, an intelligent temperature control system is incorporated. This intelligent temperature control system can monitor temperature changes within the heat exchanger 10 and its surroundings in real time through sensors, and automatically adjust the openings of the inlet 140 and outlet 130 as needed. For example, in high-temperature environments, the system can automatically increase the opening of the inlet 140 to speed up the flow of cooling medium, thereby improving heat dissipation efficiency; whereas in low-temperature environments, the opening can be appropriately reduced to save energy.

[0052] Reference Figure 8 and Figure 9 In some embodiments, a plurality of isolation modules 120 are provided in the hollow chamber of the heat exchanger 10 at intervals. These isolation modules 120 divide the flow channel 110 into a plurality of flow branches, and the plurality of flow branches are interconnected. On the one hand, this design is conducive to the flow of fluid in the hollow chamber. On the other hand, it effectively increases the contact area between the cooling medium and the wall surface of the heat exchanger 10, thereby improving the heat exchange efficiency. Each isolation module 120 plays a role in separation and guidance, ensuring the uniform distribution of the cooling medium on different paths. In this way, the cooling medium can effectively exchange heat in a wider area, thereby improving the overall heat dissipation effect.

[0053] It is understood that in some embodiments, different designs for the isolation module 120 may be employed to further optimize heat dissipation performance. For example, the isolation module 120 may be designed with microporous structures. This ensures connectivity between the various flow branches while increasing the turbulence effect of the medium flow, thereby improving heat exchange efficiency. Alternatively, the isolation module 120 may be manufactured using multilayer composite materials, such as using a high thermal conductivity material in the core and a layer of corrosion-resistant material on the outside. This ensures efficient heat conduction while extending service life.

[0054] It is understandable that in some embodiments, an adjustable isolation module 120 is introduced. Through mechanical devices or intelligent control systems, the position or shape of the isolation module 120 can be dynamically adjusted according to the actual operating conditions to adapt to different heat dissipation requirements. For example, in some high-performance computing devices, the state of the isolation module 120 can be automatically adjusted according to the workload of the processor to ensure that it is always in the best heat dissipation state. For example, when the processor load is high, the system can automatically increase the number or width of the diversion branches to improve the heat dissipation capacity; while in a low-load state, the number or width of the diversion branches can be appropriately reduced to save space and cost.

[0055] Reference Figures 1 to 5 as well as Figure 9In some embodiments, the cross-section of the main body 100 of the heat exchanger 10 cut by a vertical plane is rectangular. A hollow chamber is provided inside the main body 100, and a guide channel 110 is provided therein. The inlet 140 and the outlet 130 are both connected to the guide channel 110 to ensure that the cooling medium can flow smoothly. The fins 200 protrude along the thickness direction of the main body 100, so that heat can be effectively dissipated through natural convection and air-space radiation cooling. The relationship between the length a, width b, and thickness c of the main body 100 satisfies 70c≤b≤a. For example, the main body 100 is a rectangular parallelepiped with a length of 1m, a width of 1m, and a thickness of 1cm. This proportional design ensures sufficient heat dissipation area without taking up too much space.

[0056] In some embodiments, a temperature sensor is added to the interior of the main body 100 to monitor the temperature of the cooling medium in real time. Based on this data, the intelligent control system can automatically adjust the opening of the inlet 140 and outlet 130 to optimize heat dissipation. For example, in high-temperature environments, the system can automatically increase the opening of the inlet 140 to speed up the flow of cooling medium, while in low-temperature environments, the opening can be appropriately reduced to save energy.

[0057] The embodiment of the second aspect of the present invention provides a heat dissipation system. Figure 1 In some embodiments, the heat dissipation system includes at least two heat exchangers 10 arranged opposite to each other. Each heat exchanger 10 includes a main body 100, a flow guide channel 110, and fins 200 connected to both sides thereof. The distance between the main bodies 100 of the two heat exchangers 10 is 2l, the height of the main body 100 is h, and the length of the fins 200 along the protruding direction is y. The relationship between y, h, and l satisfies y=q[h / (lm)x-hm / (1-m)] , where q is in the range of 0.8≤q≤1.2, for example, q is 0.8, 1.0, 1.2, and preferably 1.0. This layout design fully utilizes the principles of natural convection and space radiation cooling, creating a good air flow path between the two heat exchangers 10, thereby improving the overall heat dissipation efficiency.

[0058] In practical applications, the distance 2l between the two heat exchangers 10 can be adjusted according to specific needs to achieve optimal heat dissipation. For example, if efficient heat dissipation is required, the distance 2l can be appropriately reduced to allow the two heat exchangers 10 to be arranged more closely together, thereby enhancing the turbulent effect of air flow. Conversely, if space is limited, the distance 2l can be appropriately increased to accommodate different installation environments. By properly adjusting these parameters, the heat dissipation system can effectively reduce building energy consumption and environmental heat hazards without consuming additional energy, achieving excellent economic and practical benefits.

[0059] The heat exchanger 10 and the heat dissipation system of the present application are exemplified below with a specific embodiment. Figure 1 When the vertical heat exchanger 10 main body 100 spacing is 2l, the height is h, the heat dissipation fin 200 length should meet y=h / (lm)x-hm / (1-m) . It has been demonstrated that this arrangement can make the heat exchanger 10 have a better sky radiation angle, thereby enhancing the radiation heat dissipation effect. Parallel pipes are used inside the heat exchanger 10, that is, the branches of the guide channel 110 are interconnected. It has been verified that this arrangement has better heat transfer efficiency. If h is 2, 4, and 8 times l respectively, m should meet 0.207h, 0.061h, and 0.0158h. Under this condition, the heat exchanger 10 itself and the bottom roof have a better sky radiation angle. The fin 200 is a cone with a wider bottom and gradually decreasing height, and its slope should be 3.125. The spacing between the fins 200 is equal to the height of the nearest fin 200 above. The guide pipes are arranged in parallel, and the inlet 140 and outlet 130 are designed diagonally to make the internal fluid flow evenly.

[0060] Furthermore, when the heat exchanger 10 needs to be installed at a certain angle due to installation requirements, the calculation of radiation heat transfer needs to take into account the influence of the solar radiation incident angle. Figure 10 A more common installation method is given (the heat exchanger 10 is arranged vertically. Sometimes the incident angle of the sun is different, so the inventor proposes to divide the area of ​​the entire board into different spaces. See the Figure 10 In the first figure on the left, the S3 surface and the S6 surface can be illuminated by sunlight, so the temperatures of these areas are different, which is used to divide the areas. The S3 surface can radiate to the S6 surface, S2 surface, S5 surface, and S1 surface. The radiation angle coefficient is mainly used to calculate how much heat is transferred from the S3 surface to the S5 surface, etc. See the middle figure in the figure. The sunlight only shines on the S3 surface. In this case, there are only the S1 surface, S3 surface, S2 surface, and S5 surface, but no S6 surface. See the figure on the far right of the figure. The area of ​​the S3 surface becomes smaller again, and a part of the heat exchanger 10 is not illuminated by sunlight. In this case, there is an additional S4 surface. The calculation formula for the entire radiation angle in the following text takes all three different working conditions into account, thereby obtaining the percentage of radiation between different surfaces. ), as well as the calculation area of ​​the radiation angle between the heat exchangers 10 under this installation condition. According to the law of conservation of energy, this patent provides a calculation model for the aerospace radiation angle matching the heat exchanger 10 under different working conditions, see Figure 10 ( Figure 10 Condition 1 means that at noon, some sunlight will hit the roof, and there will be S6 surface. Condition 2 means that in the morning or afternoon, the sunlight can only hit some of the panels, and no sunlight will hit the roof, which will be blocked by the panels. a,bIt represents the percentage of heat radiated from surface a that falls on surface b, that is, how much heat falls from surface a to surface b. a,b The calculation result is a decimal, such as 0.7 or 0.5, and the maximum is 1. This calculation model can assist in rapid efficiency evaluation of specific projects.

[0061] Specifically, refer to Figure 1 and Figure 10 The third embodiment of the present invention proposes a calculation model of a heat exchanger system and a space-sky radiation angle, see Figure 10 Related content of working condition 1. Specifically, this embodiment is used for a system in which the sun partially shines on the heat exchanger 10, including any of the above-mentioned heat dissipation systems. The calculation model of the heat exchanger system and the sky-sky radiation angle has S3 and S5 surfaces corresponding to two adjacent heat exchangers 10, and S1 and S2 surfaces parallel to and spaced between the S3 and S5 surfaces. The S6 surface is coplanar with the S2 surface, and the S6 surface is located between the S3 and S2 surfaces. The S6 surface and the S3 surface are suitable for being illuminated by the sun. The S3, S1, S5, S2 and S6 surfaces are connected end to end in sequence, and their outlines cut by vertical planes form a parallelogram. The calculation model of the heat exchanger system and the sky-sky radiation angle includes at least one of the following relationships: X 1,2 is the percentage of heat radiated from surface S1 that falls on surface S2, ; and / or, X 1,3 is the percentage of heat radiated from surface S1 that falls on surface S3, ; and / or, X 1,5 is the percentage of heat radiated from surface S1 that falls on surface S5, ; and / or, X 1,6 is the percentage of heat radiated from surface S1 that falls on surface S6, ; and / or, X 2,3 is the percentage of heat radiated from surface S2 that falls on surface S3, ; and / or, X 2,5 is the percentage of heat radiated from surface S2 that falls on surface S5, ; and / or, X 3,5 is the percentage of heat radiated from surface S3 that falls on surface S5, ; and / or, X 3,6 is the percentage of heat radiated from surface S3 that falls on surface S6, ; and / or, X 5,6 is the percentage of heat radiated from the S5 surface falling on the S6 surface, ; in, is the spacing of the heat exchanger 2l and height h The ratio of .

[0062] Reference Figure 1 and Figure 10 The fourth embodiment of the present invention proposes a calculation model of a heat exchanger system and a space radiation angle, see Figure 10 Related content of working condition 2. Specifically, this embodiment is used for a system in which the sun is completely irradiated on the heat exchanger 10, including any of the above-mentioned heat dissipation systems. The calculation model of the heat exchanger system and the sky-sky radiation angle has two corresponding adjacent heat exchangers 10, one of which corresponds to the S5 surface, and the other corresponds to the S3 surface and the S4 surface. The S3 surface and the S4 surface are coplanar, wherein the S3 surface can be irradiated by the sun, and the S4 surface is not irradiated by the sun. The S1 surface is sandwiched between the S3 surface and the S5 surface, and the S2 surface is sandwiched between the S4 surface and the S5 surface. The S4 surface, the S3 surface, the S1 surface, the S5 surface and the S2 surface are connected end to end in sequence, and their outlines cut by vertical planes form a parallelogram. The calculation model of the heat exchanger system and the sky-sky radiation angle includes at least one of the following relationships: X 1,2 is the percentage of heat radiated from surface S1 that falls on surface S2, ; and / or, X 1,3 is the percentage of heat radiated from surface S1 that falls on surface S3, ; and / or, X 1,4 is the percentage of heat radiated from surface S1 that falls on surface S4, ; and / or, X 1,5 is the percentage of heat radiated from surface S1 that falls on surface S5, ; and / or, X 2,3 is the percentage of heat radiated from surface S2 that falls on surface S3, ; and / or, X 2,4 is the percentage of heat radiated from surface S2 that falls on surface S4, ; and / or, X 2,5 is the percentage of heat radiated from surface S2 that falls on surface S5, ; and / or, X 3,5 is the percentage of heat radiated from surface S3 that falls on surface S5, ; and / or, X 4,5 is the percentage of heat radiated from the S4 surface falling on the S5 surface, ; in, is the spacing of the heat exchanger 2l and height h The ratio of ; ; ; .

[0063] Note: Regarding the above-mentioned embodiments of the third aspect and the fourth aspect, X ab is the ratio of the energy radiated from surface a to surface b.

[0064] The fifth aspect of the present invention provides a method for evaluating the efficiency of a heat dissipation system, including any of the above-mentioned heat exchanger systems and the calculation model of the sky-sky radiation angle. This method collects and analyzes the heat radiation ratio of each surface of the heat dissipation system (such as X 1,2 、X 1,3 The cooling efficiency of the entire system can be evaluated by combining specific environmental conditions (such as the angle of solar incidence). This method helps to gain a deeper understanding of the actual performance of each component and make optimization adjustments accordingly.

[0065] In practical applications, the heat transfer ratio between each surface can be calculated based on these parameters to determine the optimal design of the specific layout and size parameters of the heat dissipation system. 1,2This represents the percentage of heat radiated from surface S1 that falls on surface S2. By measuring and calculating this value, we can understand the heat distribution within the system. This approach not only improves the overall efficiency of the cooling system but also significantly reduces building energy consumption and environmental heat hazards. For example, in large data centers or industrial plants, appropriate cooling system design and assessment methods can help maintain optimal equipment operation while reducing energy consumption and carbon emissions.

[0066] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields, within the scope of the present invention are included in the patent protection scope of the present invention.

Claims

1. A heat exchanger, characterized in that: include: The main body has a hollow chamber, a flow guide channel is provided in the hollow chamber, and the main body has an inlet and an outlet, both of which are connected to the flow guide channel; Fins are connected to opposite sides of the main body and protrude from the main body in opposite directions; Wherein, along the protruding direction of the fin, the thickness of the side of the fin away from the main body is smaller than the thickness of the side close to the main body.

2. The heat exchanger according to claim 1, characterized in that Along the vertical direction, the fins are distributed at intervals.

3. The heat exchanger according to claim 1, characterized in that The fins protrude from the main body along a horizontal direction.

4. The heat exchanger according to claim 3, characterized in that Along the vertical direction, the thickness of the fin gradually increases from the side of the fin away from the main body to the side close to the main body.

5. The heat exchanger according to claim 4, characterized in that The area of ​​the fin cut by the vertical plane is an isosceles triangle; and / or, The fins are conical, and the slope thereof ranges from 2.7 to 3.

7.

6. The heat exchanger according to claim 5, characterized in that The length of the fin along the protruding direction is y The distance from the fin to the adjacent fin below it is d,y and d The relationship satisfies: y=pd ,in, p The range is 0.8≤p≤1.2 .

7. The heat exchanger according to claim 1, characterized in that In the vertical direction, the outlet is located below the inlet.

8. The heat exchanger according to claim 1, characterized in that A plurality of isolation modules are arranged at intervals in the hollow chamber, and the plurality of isolation modules divide the diversion channel into a plurality of diversion branches, and the plurality of diversion branches are interconnected.

9. The heat exchanger according to claim 1, characterized in that The cross section of the main body cut by a vertical plane is rectangular, the fin protrudes along the thickness direction of the main body, and the length of the main body is a ,width b ,thickness c The relationship satisfies: 70c≤b≤a 。 10. A heat dissipation system, characterized in that: The heat exchanger according to any one of claims 1 to 9, wherein the heat dissipation system comprises at least two heat exchangers distributed opposite to each other, wherein the distance between the main bodies of the two heat exchangers along the direction from one of the heat exchangers to the other heat exchanger is 2l , the height of the main body in the vertical direction is h , the length of the fin along the protruding direction is y satisfy: y=q[h / (lm)x-hm / (1-m)] , q The range is 0.8≤q≤1.2 .

11. A calculation model of a heat exchanger system and sky-sky radiation angle, used for a heat exchanger system where the sun partially shines on it, characterized in that: The heat dissipation system according to claim 10 is included, wherein the calculation model of the heat exchanger system and the sky-sky radiation angle has S3 and S5 surfaces corresponding to two adjacent heat exchangers, and S1 and S2 surfaces parallel to and spaced apart from each other and sandwiched between the S3 and S5 surfaces, the S6 surface is coplanar with the S2 surface, the S6 surface is located between the S3 and S2 surfaces, the S6 surface and the S3 surface are suitable for being exposed to sunlight, the S3 surface, the S1 surface, the S5 surface, the S2 surface and the S6 surface are connected end to end in sequence, and their outlines cut by vertical planes form a parallelogram, and the calculation model of the heat exchanger system and the sky-sky radiation angle includes at least one of the following relationships: X 1,2 is the percentage of heat radiated from the S1 surface falling on the S2 surface, ； and / or, X 1,3 is the percentage of heat radiated from the S1 surface falling on the S3 surface, ； and / or, X 1,5 is the percentage of heat radiated from the S1 surface falling on the S5 surface, ； and / or, X 1,6 is the percentage of heat radiated from the S1 surface falling on the S6 surface, ； and / or, X 2,3 is the percentage of heat radiated from the S2 surface falling on the S3 surface, ； and / or, X 2,5 is the percentage of heat radiated from the S2 surface falling on the S5 surface, ； and / or, X 3,5 is the percentage of heat radiated from the S3 surface falling on the S5 surface, ； and / or, X 3,6 is the percentage of heat radiated from the S3 surface falling on the S6 surface, ； and / or, X 5,6 is the percentage of heat radiated from the S5 surface falling on the S6 surface, ； in, is the spacing of the heat exchanger 2l and height h The ratio of 。 12. A calculation model of a heat exchanger system and sky-sky radiation angle, used when the sun completely shines on the heat exchanger system, characterized in that: The heat dissipation system according to claim 10 is included, wherein the heat exchanger system and the calculation model of the sky-sky radiation angle have corresponding two adjacent heat exchangers, wherein one of the heat exchangers corresponds to the S5 surface, and the other heat exchanger corresponds to the S3 surface and the S4 surface, the S3 surface and the S4 surface are coplanar, wherein the S3 surface can be exposed to sunlight, and the S4 surface is not exposed to sunlight, the S1 surface is sandwiched between the S3 surface and the S5 surface, and the S2 surface is sandwiched between the S4 surface and the S5 surface, and the S4 surface, the S3 surface, the S1 surface, the S5 surface and the S2 surface are connected end to end in sequence, and their outlines cut by vertical planes form a parallelogram, and the calculation model of the heat exchanger system and the sky-sky radiation angle includes at least one of the following relationships: X 1,2 is the percentage of heat radiated from the S1 surface falling on the S2 surface, ； and / or, X 1,3 is the percentage of heat radiated from the S1 surface falling on the S3 surface, ； and / or, X 1,4 is the percentage of heat radiated from the S1 surface falling on the S4 surface, ； and / or, X 1,5 is the percentage of heat radiated from the S1 surface falling on the S5 surface, ； and / or, X 2,3 is the percentage of heat radiated from the S2 surface falling on the S3 surface, ； and / or, X 2,4 is the percentage of heat radiated from the S2 surface falling on the S4 surface, ； and / or, X 2,5 is the percentage of heat radiated from the S2 surface falling on the S5 surface, ； and / or, X 3,5 is the percentage of heat radiated from the S3 surface falling on the S5 surface, ； and / or, X 4,5 is the percentage of heat radiated from the S4 surface falling on the S5 surface, ； in, is the spacing of the heat exchanger 2l and height h The ratio of ； ； ； 。 13. A method for evaluating the efficiency of a heat dissipation system, characterized in that: A calculation model of the heat exchanger system and the sky-space radiation angle including any one of claim 11 or claim 12.

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