Indoor simulation test device and method for soaking performance of cooling material containing internal heat source

Abstract

The invention relates to the technical field of cooling material performance testing, and particularly discloses an internal heat source-containing cooling material soaking performance indoor simulation testing device, which comprises an equipment shell, a movable light source, a temperature sensing acquisition system and a heat source heating system, the equipment shell comprises a sunny side and a shady side, the movable light source is located obliquely above the sunny side, and the temperature sensing and collecting system comprises a sunny side wireless temperature measuring sensor arranged on the inner side of the sunny side and a shady side wireless temperature measuring sensor arranged on the inner side of the shady side. And the sunny side wireless temperature measurement sensor and the nightside wireless temperature measurement sensor are wirelessly connected to a wireless temperature collector. The invention makes up the defects of outdoor performance test experiments, fills the blank in the aspect of soaking performance test of the existing cooling material, can provide support for the aspects of power grid engineering construction material selection, cooling material performance design, evaluation, life prediction and the like, prolongs the full life cycle of power grid equipment, and provides guarantee for safe and reliable operation of a power grid.

Description

Technical Field

[0001] The present invention relates to the technical field of cooling material performance testing, and in particular to an indoor simulation testing device and method for the heat-averaging performance of a cooling material containing an internal heat source. Background Art

[0002] Heat dissipation is related to the safe and stable operation of power equipment and the continuous and reliable power supply of the power grid. Overheating of power equipment is an important cause of its failure and shortened life. The insulation and structure of power equipment are closely related to its heat dissipation performance. Excessive operating temperature will accelerate the aging of insulation materials, thereby shortening the service life of the equipment. In addition to affecting its operating load capacity, heat dissipation of power equipment will also affect the structure of the equipment. Strong sunshine and internal heating of the equipment cause the shell temperature of power equipment such as transformers to rise, forming a temperature difference between the sunny and shady sides of the shell, causing local overheating and expansion of the shell to produce cracks, causing asymmetric thermal expansion to cause shell deformation, and then rupture. At the same time, frequent alternation of thermal expansion and contraction causes component wear and produces metal particles. These metal particles move freely under the action of the electromagnetic field inside the equipment, which has a great impact on the insulation of the equipment. Therefore, the development of efficient heat dissipation and cooling materials for power equipment and the rapid and effective performance testing of them are important topics in the operation and maintenance of power equipment.

[0003] In the process of research and development of cooling materials, outdoor simulation experiments are mostly used to test the heat dissipation performance of cooling materials. Outdoor simulation experiments simulate the actual service status of the cooling materials by placing the cooling materials outdoors, so as to test and evaluate the heat dissipation performance of the cooling materials. This method requires a relatively long time period and is significantly affected by factors such as sunshine duration and weather changes. At the same time, outdoor simulation tests cannot effectively reproduce the actual operating service status of equipment such as transformers, making it impossible for such simulation tests to quickly and effectively comprehensively evaluate the heat dissipation performance of cooling materials and predict their lifespan. Therefore, how to quickly and effectively evaluate the heat dissipation performance of cooling materials in the laboratory is the key to the rapid development of cooling materials, and efficient cooling and heat dissipation materials are the key to ensuring the safe, stable and reliable operation of power equipment. Therefore, it is urgent to study the indoor simulation test plan for the heat dissipation performance of cooling materials. Summary of the invention

[0004] The purpose of the present invention is to provide an indoor simulation test device and method for the heat-averaging performance of a cooling material containing an internal heat source, so as to overcome the defects of the prior art. The present invention makes up for the shortcomings of outdoor performance test experiments and fills the gap in the existing heat-averaging performance test of cooling materials. It can provide support for material selection for power grid engineering construction, performance design, evaluation and life prediction of cooling materials, improve the full life cycle of power grid equipment, and provide guarantee for the safe and reliable operation of the power grid.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: Indoor simulation test device for heat-dissipating performance of cooling materials with internal heat sources, including equipment housing, movable light source, temperature sensing collection system and heat source heating system; The device housing includes a sun-facing side and a shade-facing side, the movable light source is located obliquely above the sun-facing side, the temperature sensing collection system includes a sun-facing wireless temperature sensor arranged on the inner side of the sun-facing side and a shade-facing wireless temperature sensor arranged on the inner side of the shade-facing side, and the sun-facing wireless temperature sensor and the shade-facing wireless temperature sensor are wirelessly connected to a wireless temperature collector; The heat source heating system includes a heat source disposed inside the device housing, the heat source being connected to a temperature controller; The wireless temperature collector and the temperature controller are both powered by a power supply; When in use, the cooling material to be tested is fixed on the surface of the device casing.

[0006] Furthermore, the movable light source includes a slide rail, a simulated light source capable of sliding on the slide rail, and a light source controller for controlling the simulated light source, and the light source controller is powered by a power supply.

[0007] Furthermore, the simulated light source is located obliquely above the device housing, forming an angle of 30° to 60° with the horizontal plane, and the vertical straight-line distance between the center point of the simulated light source and the device housing is 0.5 to 0.8 m.

[0008] Furthermore, the simulated light source is composed of 9 xenon lamps arranged in a 3×3 linear array, the spectrum adopts the AM1.5G standard solar spectrum, and the irradiance intensity is adjusted in the range of 600-1200W / m 2 , the effective spectral band is 400-1100nm.

[0009] Furthermore, the sliding speed of the simulated light source on the slide rail is 0-10 m / h.

[0010] Furthermore, the device shell is a cube shell, and fixing clamps for fixing the cooling material to be tested are arranged at the four corners of the sun-facing side and the shade-facing side of the cube shell, and the center of the fixing clamp is 5 cm away from the boundary of the square where the sun-facing side and the shade-facing side are located.

[0011] Furthermore, when the cooling material to be tested is a film, the cooling material to be tested is applied to the surface of the device housing and fixed by a fixing fixture; When the cooling material to be tested is a coating, the cooling material to be tested is sprayed on the surface of the square sample. After the coating is cured, the legitimate sample is fixed to the surface of the device housing by a fixing fixture.

[0012] Furthermore, there are five wireless temperature measuring sensors on the sun side and five wireless temperature measuring sensors on the shady side, which are arranged on the inner sides of the sun-facing side and the shady side respectively using a five-point method.

[0013] Indoor simulation test method for heat dissipation performance of cooling materials with internal heat sources, including: The cooling material to be tested is placed on the surface of the device housing, and a movable light source is turned on to simulate the target lighting conditions; The temperature data monitored by the wireless temperature sensors on the sunny side and the shady side are stored and analyzed, and the temperature change curves of the sunny side and the shady side over time and the average temperature difference curve of the sunny side and the shady side over time are plotted respectively.

[0014] Furthermore, during the test, the indoor temperature was controlled at 20~25°C, and the indoor humidity was controlled at 40%~70%.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention proposes an indoor simulation test device for the heat-dissipating performance of cooling materials containing an internal heat source. The device can be used to quickly and effectively test the heat-dissipating performance of the cooling material to be tested. The operation is relatively simple, and the comparative study, rapid evaluation, and prediction study of the life of the cooling material can be achieved in the laboratory under simulated conditions of different outdoor lighting and internal heating. The heat source heating system includes a heat source arranged inside the device housing, and the heat source is connected to a temperature controller. The temperature controller can adjust the heating temperature of the internal heat source, so that the heat source generates heat evenly inside the device and the outer surface of the device reaches a set temperature, thereby simulating the internal heating state of the power equipment during actual service. The present invention has good simulation, acceleration, and reproducibility, and provides support for material selection, cooling material performance design, evaluation, and life prediction in power grid engineering construction, improves the full life cycle of power grid equipment, and provides guarantee for safe and reliable operation of the power grid.

[0016] Furthermore, the purpose of the movable light source is to simulate outdoor lighting conditions (the outdoor sun will be in different positions and produce different intensities of solar radiation due to the change of time). By adjusting the light intensity of the simulated light source and setting the lighting time, it is possible to simulate the strong light at noon on a sunny day outdoors (1000W / m 2 ) environment or cloudy weather (600W / m 2 ) environment, and can also flexibly adjust the light intensity and illumination time according to the specific service environment of the cooling material to be tested, and adjust the illumination angle of the simulated light source by moving the slide rail.

[0017] Furthermore, the presence of the fixing fixture makes the device of the present invention highly compatible with the form of the cooling material to be tested and the serving substrate, and the cooling material to be tested can be flexibly placed on the surface of the cube device shell; after the test is completed, the cooling material can be easily removed, and the entire testing process is simple, convenient, efficient and has good repeatability.

[0018] Furthermore, the arrangement of the temperature collection points on the shady side is consistent with that on the sunny side. After the temperature data collection is completed, the difference between the average temperature of the five temperature collection points on the sunny side and the average temperature of the shady side is finally used to evaluate and characterize the heat uniformity performance of the cooling material.

[0019] The method of the present invention mainly performs radiant heating and internal heating of the device casing surface for a fixed time by an external movable light source and an internal heat source, and then obtains the temperature difference between the sunny side and the shady side of the device casing to evaluate and characterize the heat-averaging performance of the cooling material to be tested, thereby making up for the shortcomings of outdoor performance test experiments and filling the gap in the existing heat-averaging performance testing of cooling materials. It can provide support for material selection for power grid engineering construction, performance design, evaluation and life prediction of cooling materials, improve the full life cycle of power grid equipment, and provide guarantee for the safe and reliable operation of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of an indoor simulation test device for the heat-dissipating performance of a cooling material containing an internal heat source according to the present invention.

[0021] Figure 2 It is a side schematic diagram of an indoor simulation test device for the heat-averaging performance of a cooling material containing an internal heat source according to the present invention.

[0022] Figure 3 This is a schematic diagram of the distribution of fixing fixtures on the sunny and shady sides of the cube shell.

[0023] Figure 4 Schematic diagram of the distribution of temperature sensors inside the sunny and shady sides of the cube shell.

[0024] Figure 5 These are the results of an accelerated simulation test of the heat-dissipating performance of a cooling material under conditions of constant illumination and internal heat source intensity.

[0025] Figure 6 These are the accelerated simulation test results of the heat-averaging performance of different cooling materials under conditions of constant illumination and internal heat source intensity.

[0026] Figure 7 These are the accelerated simulation test results of the heat-averaging performance of cooling materials under conditions of constant internal heat source intensity and different light intensities.

[0027] Figure 8These are the accelerated simulation test results of the heat-averaging performance of cooling materials under constant light intensity and different internal heat source intensities.

[0028] In the figure, 1. slide rail; 2. simulated light source; 3. light source controller; 4. wireless temperature sensor on the sunny side; 5. wireless temperature sensor on the shady side; 6. wireless temperature collector; 7. heating wire; 8. temperature controller; 9. power supply; 10. equipment casing; 10-1. sunny side; 10-2. shady side; 11. fixing fixture. DETAILED DESCRIPTION

[0029] The present invention is described in further detail below: An indoor simulation test device for the heat-dissipating performance of a cooling material containing an internal heat source comprises: a movable light source, a temperature sensing and collecting system, an internal heat source heating system and a device housing 10 (the present invention specifically adopts a cubic device housing).

[0030] like Figure 1 As shown, the movable light source is composed of a slide rail 1, a simulated light source 2 and a light source controller 3. The light source controller 3 can adjust the heating temperature of the simulated light source 2, set the illumination time of the simulated light source 2 and the moving speed of the simulated light source 2 on the slide rail 1, so as to realize the adjustable illumination intensity and illumination time of the simulated light source 2 and the movable position of the simulated light source 2. The simulated light source 2 is composed of 9 xenon lamps arranged in a 3×3 linear array. The spectrum adopts the AM1.5G standard solar spectrum, and the irradiation intensity can be adjusted in the range of 600-1200W / m 2 , the effective spectral band is 400-1100nm; the adjustable circulation speed of the slide rail 1 is 0-10m / h. Figure 2 As shown, the movable light source is located 30°-60° above the cube device housing and 0.5-0.8m away from the cube device housing. The purpose of the movable light source is to simulate outdoor lighting conditions (the outdoor sun will be in different positions and produce solar radiation of different intensities due to the change of time). By adjusting the light intensity of the simulated light source 2 and setting the lighting time, it is possible to simulate strong outdoor midday sunny light (1000W / m 2 ) environment or cloudy weather (600W / m 2 ) environment, the illumination intensity and illumination time can be flexibly adjusted according to the specific service environment of the cooling material to be tested, and the illumination angle of the simulated light source 2 can be adjusted by moving the slide rail 1.

[0031] The internal heat source heating system is composed of a heat source evenly distributed inside the device (the present invention specifically adopts a heating wire 7) and a temperature controller 8. The temperature controller 8 can adjust the heating temperature of the internal heat source, allowing the heating wire 7 to evenly generate heat inside the device and make the outer surface of the device reach a set temperature, thereby achieving the purpose of simulating the internal heating state of the power equipment during actual service.

[0032] The cubic device shell is made of aluminum alloy with good thermal conductivity, and the side length of the cubic device shell is fixed at 80cm. Figure 3 As shown, there is a fixing fixture 11 at each of the four corners of the sunny side 10-1 and the shady side 10-2 of the cube device shell, and the distance between the fixing fixture 11 and the boundary of the cube device shell is 5 cm. If the cooling material to be tested is a film, the film can be directly applied to the outer surface of the cube device shell and fixed by the fixing fixture 11; if the cooling material to be tested is a coating, the coating can be sprayed on the surface of a square sample with a side length of 70cm×70cm, and after the coating is cured, the square sample is fixed to the outer surface of the cube device shell by the fixing fixture 11. Considering the thermal conductivity of the square sample, it is recommended that the thickness of the square sample be 1-3mm, and the material is determined by the requirements of the cooling material to be tested. The presence of the fixing fixture 11 makes the cooling material heat-averaging performance testing device highly compatible with the form of the cooling material and the serving substrate, and the cooling material to be tested can be flexibly placed on the surface of the cube device shell; after the test is completed, the cooling material can be easily removed, and the entire testing process is simple, convenient, efficient and has good repeatability.

[0033] The temperature sensing and acquisition system consists of a wireless temperature sensor (including a positive side wireless temperature sensor 4 and a negative side wireless temperature sensor 5) and a wireless temperature collector 6. The wireless temperature sensor and the wireless temperature collector 6 are connected via a wireless signal. After the wireless temperature sensor collects the temperature data, it is transmitted to the wireless temperature collector 6 in real time for data storage and processing.

[0034] During the test of the cooling material to be tested, the cooling material to be tested is fixed on the surface of the cube device shell 10, and the wireless temperature sensors are evenly distributed at different positions on both sides of the inner shell of the cube device. During the experiment, the temperature data on both sides of the cube device shell are collected by the wireless temperature sensors, and then the data is output and summarized to the wireless temperature collector 6 for data storage and analysis, and the temperature change curve over time and the average temperature difference curve between the sunny side and the shady side are drawn to evaluate the heat-dissipating performance of the cooling material. The light source controller 3, the wireless temperature collector 6 and the temperature controller 8 are all connected to the power supply 9. This device mainly uses an external movable light source and an internal heat source to perform fixed-time irradiation heating and internal heating on the surface of the cube device shell, and then obtains the temperature difference between the sunny side 10-1 and the shady side 10-2 of the cube device shell to evaluate and characterize the heat-dissipating performance of the cooling material.

[0035] In the present invention, the cube device housing is as follows Figure 1 As shown, it is placed flat on the test bench, and the movable light source is placed on one side of the cube device housing. The moving trajectory of the simulated light source 2 is parallel to the horizontal direction, as shown in FIG. Figure 2 As shown, one side of the cube device shell on the same side as the simulated light source 2 is the illuminated surface (i.e., the sunny side 10-1), and five sunny side wireless temperature sensors 4 are evenly distributed inside the cube device shell in the manner of up, down, left, right, and center. The other side is the backlit surface (i.e., the shady side 10-2), and five shady side wireless temperature sensors 5 are also evenly distributed inside the cube device shell. The wireless temperature sensors are arranged using a five-point method (i.e., up, down, left, right, and center), with five sensing points arranged on each side of the cube device shell. For example, for the sunny side, the layout position of the wireless temperature collector 6 should avoid dead angles, boundaries, and corners to reduce test errors. The plan view of the sunny side or shady side of the cube device shell is shown in FIG. Figure 4 As shown in the figure, the first temperature collection point is at the center of the sunny side; the second and third temperature collection points are 20 cm horizontally from the center point to the left and right sides; the fourth and fifth temperature collection points are 20 cm vertically from the center point to the top and bottom sides. The arrangement of the temperature collection points on the shady side is the same as that on the sunny side. After completing the temperature data collection, the difference between the average temperature of the five temperature collection points on the sunny side and the average temperature of the shady side is used to evaluate and characterize the heat uniformity performance of the material.

[0036] The test method of the present invention requires that the test experiment be carried out in a laboratory, with the room temperature of the laboratory controlled between 20-25° C. and the humidity controlled between 40%-70%.

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1 Accelerated simulation test of the heat dissipation performance of the cooling material under constant light and internal heat source intensity In the laboratory environment required by the test method, according to the light intensity data of a certain area, the light intensity of the simulated light source 2 is set to 600W / m 2 , the illumination duration is 10h to simulate the illumination conditions under outdoor cloudy conditions and the moving speed of the simulated light source 2 is given to be 1m / h, the heating temperature of the internal heat source heating system is set to 45°C, and then the cooling film to be tested is fixed on the surface of the outer shell of the cube device as the experimental group for heat uniformity performance test. After the test is completed and the heat uniformity performance test data of the cooling material is obtained, the cooling film to be tested in the experimental group is removed, and the same test is carried out on the blank control group where there is no cooling material on the surface of the outer shell of the cube device. After the test is completed, the heat uniformity performance of the cooling material is characterized and evaluated by comparing the change curve of the average temperature difference between the sunny side and the shady side obtained by the blank group and the experimental group. The experimental results are as follows Figure 5 shown.

[0039] Example 2 Accelerated simulation test of heat-absorbing performance of different cooling materials under constant light and internal heat source intensity In the laboratory environment required by the test method, according to the light intensity data of a certain area, the light intensity of the simulated light source 2 is set to 600W / m 2 , the illumination duration is 10h to simulate the strong light conditions of a sunny noon outdoors, and the moving speed of the simulated light source 2 is given to be 1m / h, and the heating temperature of the internal heat source heating system is set to 45°C, and then the cooling film A to be tested is fixed on the surface of the outer shell of the cube device as the experimental group 1 for the heat uniformity performance test. After the test is completed and the heat uniformity performance test data of the cooling material is obtained, the cooling film A to be tested in the experimental group is removed, and the cooling film B to be tested is fixed on the surface of the outer shell of the cube device as the experimental group 2 for the heat uniformity performance test. By analogy, the heat uniformity performance of a variety of cooling materials can be tested and the test data can be obtained. After the experiment is completed, the heat uniformity performance of different cooling materials is characterized and evaluated by comparing the change curves of the average temperature difference between the sunny side and the shady side obtained from different control group tests over time. The experimental results are as follows Figure 6 shown.

[0040] Example 3 Accelerated simulation test of the heat-averaging performance of the cooling material under constant internal heat source intensity and different light intensities In the laboratory environment required by the test method, according to the light intensity data of a certain area, the light intensity of the simulated light source 2 is set to 600W / m 2 , the illumination duration is 10h to simulate outdoor cloudy conditions and the moving speed of the simulated light source 2 is set to 1m / h, the heating temperature of the internal heat source heating system is set to 45℃, and then the cooling paint sample A to be tested is fixed on the surface of the equipment shell as the experimental group 1 for the heat distribution performance test. After the test is completed and the heat distribution performance test data of the cooling material is obtained, the cooling paint sample A to be tested that has been tested in the experimental group is removed and replaced with a new cooling paint sample A to be tested that has not been tested, and the light intensity of the simulated light source is changed to 1000W / m 2 To simulate the strong light conditions at noon on a sunny day outdoors, other conditions remain unchanged, and the heat distribution performance test of experimental group 2 is carried out. By analogy, the heat distribution performance test data of the same cooling material under constant internal heat source intensity and different light intensities can be obtained. After the test, the influence of different light intensities on the heat distribution performance of the same cooling material under constant internal heat source intensity is characterized and evaluated by comparing the change curves of the average temperature difference between the sun-facing side and the shaded side obtained by different control group tests over time. The experimental results are shown in the figure. Figure 7 shown.

[0041] Example 4 Accelerated simulation test of the heat-dissipating performance of the cooling material under constant light intensity and different internal heat source intensities In the laboratory environment required by the test method, according to the light intensity data of a certain area, the light intensity of the simulated light source 2 is set to 600W / m 2 , the illumination duration is 10h to simulate the strong light conditions of a sunny day outdoors at noon, and the moving speed of the simulated light source 2 is given to be 1m / h, and the heating temperature of the internal heat source heating system is set to 45℃, and then the cooling paint sample A to be tested is fixed on the surface of the equipment shell as the experimental group 1 for the heat distribution performance test. After the test is completed and the heat distribution performance test data of the cooling material is obtained, the cooling paint sample A to be tested that has been tested in the experimental group is removed, and a new cooling paint sample A to be tested that has not been tested is replaced. According to the characteristics of different internal heating temperatures generated by different load levels of power equipment such as transformers, the heating temperature of the internal heat source heating system is changed to 60℃, and other conditions remain unchanged, and the heat distribution performance test of experimental group 2 is carried out. By analogy, the heat distribution performance test data of the same cooling material under constant light intensity and different internal heat source intensities can be obtained. After the test is completed, the influence of different internal heat source heating intensities on the heat distribution performance of the same cooling material is characterized and evaluated by comparing the change curves of the average temperature difference between the sunny side and the shady side obtained from different control group tests over time. The experimental results are as follows Figure 8 shown.

[0042] As an embodiment of the present invention, it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention, which is also the protection scope of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An indoor simulation test device for the heat dissipation performance of a cooling material containing an internal heat source, characterized in that: It comprises a device housing (10), a movable light source, a temperature sensing collection system and a heat source heating system; The device housing (10) comprises a sun-facing surface (10-1) and a shady surface (10-2); the movable light source is located obliquely above the sun-facing surface (10-1); the temperature sensing and collecting system comprises a sun-facing wireless temperature measuring sensor (4) arranged on the inner side of the sun-facing surface (10-1) and a shady surface wireless temperature measuring sensor (5) arranged on the inner side of the shady surface (10-2); the sun-facing wireless temperature measuring sensor (4) and the shady surface wireless temperature measuring sensor (5) are wirelessly connected to a wireless temperature collector (6); The heat source heating system comprises a heat source arranged inside the device housing (10), and the heat source is connected to a temperature controller (8); The wireless temperature collector (6) and the temperature controller (8) are both powered by a power supply (9); When in use, the temperature-reducing material to be tested is fixed on the surface of the device housing (10).

2. The indoor simulation test device for heat dissipation performance of cooling materials with internal heat source according to claim 1, characterized in that: The movable light source comprises a slide rail (1), a simulated light source (2) capable of sliding on the slide rail (1), and a light source controller (3) for controlling the simulated light source (2); the light source controller (3) is powered by a power source (9).

3. The indoor simulation test device for heat dissipation performance of cooling materials containing internal heat sources according to claim 2, characterized in that: The simulated light source (2) is located obliquely above the device housing (10) and forms an angle of 30° to 60° with the horizontal plane. The vertical straight-line distance between the center point of the simulated light source (2) and the device housing (10) is 0.5 to 0.8 m.

4. The indoor simulation test device for heat dissipation performance of cooling materials with internal heat source according to claim 2, characterized in that: The simulated light source (2) is composed of 9 xenon lamps arranged in a 3×3 linear array, the spectrum adopts the AM1.5G standard solar spectrum, and the irradiance intensity is adjustable in the range of 600-1200W / m 2 , the effective spectral band is 400-1100nm.

5. The indoor simulation test device for heat dissipation performance of cooling materials containing internal heat sources according to claim 2, characterized in that: The sliding speed of the simulated light source (2) on the slide rail (1) is 0-10 m / h.

6. The indoor simulation test device for heat dissipation performance of cooling materials with internal heat source according to claim 1, characterized in that: The device housing (10) is a cubic housing, and fixing fixtures (11) for fixing the cooling material to be tested are arranged at the four corners of the sun-facing side and the shade-facing side of the cubic housing, and the distance between the center of the fixing fixture (11) and the boundary of the square where the sun-facing side and the shade-facing side are located is 5 cm.

7. The indoor simulation test device for heat dissipation performance of cooling materials with internal heat source according to claim 6, characterized in that: When the cooling material to be tested is a thin film, the cooling material to be tested is applied to the surface of the device housing (10) and fixed by a fixing fixture (11); When the cooling material to be tested is a coating, the cooling material to be tested is sprayed onto the surface of the square sample, and after the coating is cured, the legitimate sample is fixed to the surface of the device housing (10) by means of a fixing fixture (11).

8. The indoor simulation test device for heat dissipation performance of cooling materials with internal heat source according to claim 1, characterized in that: There are five sun-side wireless temperature measurement sensors (4) and five shade-side wireless temperature measurement sensors (5), which are arranged on the inner sides of the sun-facing side (10-1) and the shade-facing side (10-2) respectively using a five-point method.

9. An indoor simulation test method for the heat-dissipating performance of a cooling material containing an internal heat source, using the device according to any one of claims 1 to 8, characterized in that: include: The cooling material to be tested is arranged on the surface of the device housing (10), and a movable light source is turned on to simulate target lighting conditions; The temperature data monitored by the sun-side wireless temperature sensor (4) and the shade-side wireless temperature sensor (5) are stored and analyzed, and curves showing the change of the temperature of the sun-side and the shade-side over time and the change of the average temperature difference of the sun-side and the shade-side over time are drawn respectively.

10. The indoor simulation test method for heat dissipation performance of a cooling material containing an internal heat source according to claim 9, characterized in that: During the test, the indoor temperature was controlled at 20~25℃ and the indoor humidity was controlled at 40%~70%.

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