KR102170058B1 - Thermal dissipation characteristics sensing device - Google Patents

Abstract

The apparatus for measuring heat dissipation characteristics according to the present invention is provided between a heat source chamber of vacuum accommodating a heat source unit irradiating a light source, a convection chamber accommodating an air injection port for adjusting convection conditions, the heat source chamber and the convection chamber connected in series. And a sensor unit for measuring heat dissipation characteristics of a heat dissipating member disposed on the transmissive plate. According to the apparatus for measuring heat dissipation characteristics according to the present invention, it is possible to control convection conditions and high-speed heat sources, and may be applied to various types of new materials to measure heat dissipation characteristics.

Description

Heat dissipation characteristic measurement device {THERMAL DISSIPATION CHARACTERISTICS SENSING DEVICE}

The present invention relates to an apparatus for measuring heat dissipation characteristics, and more particularly, to a device for measuring heat dissipation characteristics that can control a convection condition and a high-speed heat source, and is applicable to various types of new materials.

While the use and purpose of heat dissipation members (heat sinks) attached to electronic equipment, LEDs, and air conditioners are becoming more diverse, heat dissipation in a different form than before due to the recent integration of electronic equipment, the increase in high-power equipment, and the emergence of wearable devices. The demand for materials is on the rise.

Among them, from heat dissipation members (MCPCB, etc.) that diffuse heat by air cooling, heat dissipation fins that maximize convection area, heat transfer pads that transfer heat to the case, micro grooves formed on the surface, radiant heat dissipation materials using heat dissipation paint or radiation film, and thin films Various types of heat dissipation materials such as convection/radiation heat dissipation film in the form, heat dissipation material composed of carbon and nano (fine) materials, heat dissipation material having physical characteristics such as flexibility, or unique in implementation methods such as coating, patterning, and surface treatment Is being utilized.

In contrast, there is no clear standard for measuring heat dissipation characteristics, so a method of measuring or relatively comparing heat dissipation characteristics with its own standard was mainly used. However, such a measurement criterion differs according to the performance method or environment, and there is a problem that it is difficult to compare objectively. Furthermore, the method of experimentally measuring using individual measuring elements based on the heat transfer theory has a problem that it is difficult to apply directly in the heat dissipation industry because a person with expert knowledge needs to make elaborate measurements using very precise equipment.

In addition, since the conventional air-cooled heat dissipation measurement method mainly targets flat plates, fluids, heat sinks, etc., it has structural difficulties in applying it to new materials having various characteristics such as very thin or particulate characteristics.

On the other hand, in addition to the method of obtaining the convective/radiative heat transfer coefficient or the amount of heat released, various methods of obtaining the thermal conductivity of the member are also used. A typical method is to measure the temperature difference between both ends of the sample using a hot disk, measure the thermal diffusion coefficient using a method such as LFA, and measure the temperature of the sample in contact with an actual hot plate or fluid heat source. Various indicators such as heat transfer coefficient, heat flux, thermal diffusion coefficient, thermal resistance, temperature of heat source and heat dissipating material can be obtained.

However, these measurement technologies also have problems in that it is difficult to simulate a convective environment, or radiative heat dissipation is neglected, or measurement errors according to material deformation and size (including measurement impossible situations), and control of the measurement environment are difficult. (Heat diffusion) may be non-uniform, and in the case of a porous material, an error may occur due to voids, and the effect of the residual heat source of the heat source may interfere with the characteristics of the heat dissipating material.

In recent research literature on new material heat dissipation materials, various measurement methods for heat dissipation properties have been suggested, but in the case of fibrous heat dissipation materials, measurement of a single line or the characteristics of each particle in the case of particulate heat dissipation materials (graphene, carbon coating, etc.) It was evaluated as a measurement technology that did not take into account the actual use environment. The characteristics in the actual use environment mainly use actual heat sources (hot plate, IC chip, etc.) to present the heat dissipation effect, but these results are difficult to consistently compare in various environments, so research and development on objective measurement technology is required.

Korean Patent Publication No. 10-1337225B1 (announced on November 29, 2013)

The present invention has been conceived in view of the above technical requirements, and an object of the present invention is to provide a heat dissipation characteristic measuring apparatus capable of controlling a convection condition and a high-speed heat source, and applicable to various types of new materials.

The heat dissipation characteristic measuring apparatus according to the present invention for achieving the above object comprises: a heat source chamber of a vacuum accommodating a heat source portion for irradiating a light heat source; A convection chamber accommodating an air injection port for adjusting convection conditions; A transmission plate provided between the heat source chamber and the convection chamber connected in series; And a sensor unit for measuring heat dissipation characteristics of the heat dissipation member disposed on the transmission plate.

And, a medium of a metal or non-metal material disposed under the heat radiation member; And a thermocouple for measuring a heat flux during a temperature increase process by sensing a temperature difference between the upper and lower surfaces of the medium.

In addition, the heat dissipation member and the heat insulating material is disposed on the side of the medium to block heat transfer; may further include.

In addition, the lower surface of the medium may be formed with a light-absorbing coating for promoting light absorption, and the lower surface of the insulating material may be formed with a light-reflective coating for reflecting light.

In addition, a vacuum chamber accommodated in the convection chamber and disposed on the medium and the heat dissipating member to perform radiant heat radiation may further include.

In addition, the convection chamber further includes a curved guide groove into which one end of the air injection port is inserted, and the direction of the air applied to the heat dissipating member is changed by moving one end of the air injection port along the curved guide groove. can do.

In addition, a lens unit disposed between the transmission plate and the heat source unit to control a moving direction of light generated from the heat source unit may further include.

In addition, the sensor unit may include at least one of a thermometer, a hygrometer, a thermal imaging camera, and a wind vane.

In addition, the convection chamber may further include an air conditioning unit for controlling atmospheric pressure and humidity in the chamber.

According to the apparatus for measuring heat dissipation characteristics according to the present invention, it is possible to control convection conditions and high-speed heat sources, and to measure heat dissipation characteristics by applying to various types of new materials.

1 is a schematic diagram of an apparatus for measuring heat dissipation characteristics according to the present invention.
2 shows another embodiment of an apparatus for measuring heat dissipation characteristics according to the present invention.
3 shows another embodiment of the device for measuring heat dissipation characteristics according to the present invention.
4 is an enlarged view of an internal configuration accommodated in two chambers of the apparatus for measuring heat dissipation characteristics according to the present invention.
5 shows a first measurement method of the device for measuring heat dissipation characteristics according to the present invention.
6 shows a second measurement method of the device for measuring heat dissipation characteristics according to the present invention.
7 shows a configuration for performing heat flux measurement in the heat dissipation characteristic measuring apparatus according to the present invention.
8 shows a coating method for improving measurement reliability of the device for measuring heat dissipation properties according to the present invention.
9A and 9B show examples of implementation of the heat dissipation characteristic measuring apparatus 100 according to the present invention.
10A to 10F are graphs showing various measurement values measured by the heat dissipation characteristic measuring apparatus 100 according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms different from each other, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention belongs. It is provided to completely inform the scope of the invention to those who have it, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

Although the first, second, etc. are used to describe various elements, components and/or sections, of course, these elements, components and/or sections are not limited by these terms. These terms are only used to distinguish one element, component or section from another element, component or section. Therefore, it goes without saying that the first element, the first element, or the first section mentioned below may be a second element, a second element, or a second section within the technical scope of the present invention.

The terms used in the present specification are for describing exemplary embodiments and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, "comprises" and/or "made of" a referenced component, step, operation and/or element is one or more of the other elements, steps, operations and/or elements. It does not exclude presence or addition.

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings that can be commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries are not interpreted ideally or excessively unless explicitly defined specifically.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of a heat dissipation characteristic measuring apparatus 100 according to the present invention. As shown in FIG. 1, the heat dissipation characteristic measuring apparatus 100 according to the present invention includes a convection chamber 110 and a heat source chamber 120.

The convection chamber 110 is controlled so that proper radiative/convective heat transfer proceeds, and the heat source chamber 120 is controlled to minimize the effect of residual heat caused by the heat transfer medium.

The heat dissipation characteristic measuring apparatus 100 according to the present invention is separated into a convection chamber 110 and a heat source chamber 120 to thoroughly control heat transfer. Specifically, the existing measurement system uses metal or air as a heat transfer medium, and since the heat remaining in the medium is continuously released, a constant amount of heat is supplied and the temperature distribution in a steady state can be obtained. It was very limited to be used in various conditions such as cooling/heating, repeated thermal loads, and materials with high thermal conductivity compared to media. On the other hand, since the heat dissipation characteristic measuring apparatus 100 according to the present invention performs direct heating without a medium by irradiating a light heat source, it is possible to uniformly and accurately supply heat amount, and fast heat transfer control is possible by blocking the light heat source.

It is preferable that the heat source chamber 120 is maintained in a vacuum state for accurate heat control. To this end, the heat source chamber 120 may be provided with a vacuum pump (reference numeral 125 in FIGS. 9A and 9B) for maintaining a constant vacuum state.

The heat source chamber 120 includes a light heat source unit 160 for irradiating a light heat source, and the light heat source unit 160 may be implemented as a device capable of irradiating a light heat source with a laser or a halogen lamp.

The convection chamber 110 may be implemented as a vacuum in order to measure the heat capacity of a medium disposed on the lower surface of the heat dissipating member, but it may not be a vacuum. The convection chamber 110 accommodates an air injection port 115 for adjusting convection conditions. For simulation of convection conditions, convection intensity, convection direction, Reynolds number, temperature/humidity, gas component ratio, etc. must be properly controlled. The air injection port 115 is injected into the air compressor while the temperature and humidity of the injected air are controlled, and the injected air is injected through the air injection port 115 by controlling the pressure and air volume of the air compressor using a regulator or the like.

The air injection port 115 is basically arranged to inject air toward the heat dissipating member. That is, the air injection port 115 is basically disposed in a direction perpendicular to the arrangement surface of the heat dissipating member.

One end of the air injection port 115 is provided to be movable along the cylindrical guide hole P. Accordingly, the angle between the injection direction of the air injection port 115 and the heat dissipation member may be changed. In the state where the heat dissipating member is disposed vertically with respect to the mounting surface, the air injection port 115 sends air in a direction perpendicular to the heat dissipating member. However, when the air injection port 115 moves along the guide hole P, the heat dissipating member is disposed. Since the angle with respect to the surface changes, the angle of air delivery to the heat dissipating member changes.

The air injection port 115 transmits air whose injection intensity, temperature, humidity, etc. are controlled by a compressor or a regulator while controlling the injection angle of the air.

As shown in FIG. 1, the convection chamber 110 and the heat source chamber 120 may take a hexahedral shape having an accommodation space therein, but may have different shapes. The convection chamber 110 and the heat source chamber 120 are connected in series, and a transmission plate 170 is provided therebetween. That is, between the two chambers is blocked by the transmission plate 170. The transmission plate 170 may be made of a material (eg, glass) having a very high transmittance.

A heat radiation material HS is disposed on the upper surface of the transmission plate 170. That is, the upper part of the heat dissipation material HS belongs to the inside of the convection chamber 110 for simulating the convective condition, and the lower part of the transmission plate 170 is a heat source chamber provided with a heat light source unit 160 for generating a heat light source. It belongs to the inside of 120.

On the other hand, the heat dissipation characteristic measuring apparatus 100 according to the present invention may be provided with various sensor units for measuring the heat dissipation characteristics of the heat dissipation member (HS) disposed on the transmission plate 170, sensing sensed by the sensor unit An analysis unit (not shown) for analyzing information, a display (not shown) for displaying the analyzed information, and the like may be further included. The sensor unit may include at least one of a thermometer, a hygrometer, a thermal imaging camera, and a wind vane, and may include various sensing devices necessary for measuring heat dissipation characteristics.

FIG. 2 shows another embodiment of the heat dissipation characteristic measuring apparatus 100 according to the present invention, and FIG. 3 shows another embodiment of the heat dissipation characteristic measuring apparatus 100 according to the present invention.

As shown in FIG. 2, in the apparatus 100 for measuring heat dissipation characteristics according to the present invention, the lens unit 150 is disposed between the transmission plate 170 and the heat source unit 160. The lens unit 150 has a function of guiding a moving direction of a light heat source generated and supplied from the heat source unit 160.

Meanwhile, as shown in FIG. 2, a thermal imaging camera 140 may be disposed on an upper surface of the convection chamber 110 (a surface facing the surface on which the heat dissipating member HS is disposed). The thermal imaging camera 140 visually measures the temperature change of the parallel member HS in order to measure the heat dissipation characteristics of the heat dissipation member HS.

As shown in FIG. 3, the apparatus 100 for measuring heat dissipation characteristics according to the present invention may further include an air conditioning unit 130 for controlling atmospheric pressure and humidity in the chamber on the sidewall of the convection chamber 110. The air conditioning unit 130 may be configured with a fan for exhausting internal air or introducing external air, or a window that can be opened or closed.

4 is an enlarged view of the internal configuration accommodated in two chambers of the heat dissipation characteristic measuring apparatus 100 according to the present invention.

A hole H having a predetermined size is formed on an upper surface of the heat source chamber 120 (a surface adjacent to or in contact with the convection chamber 110), and a transmission plate 170 is disposed in the hole H. A heat dissipation member HS is disposed thereon, and heat dissipation characteristics may be determined by measuring a temperature change due to the light heat source generated in the heat source chamber 120 while adjusting the convection condition of the convection chamber 110.

Meanwhile, the heat dissipation member HS is mounted on the transmission plate 170 and is blocked by an insulating material HI except for a certain area to be exposed. The heat insulating material HI uses a cylindrical acrylic material and exposes only a certain area to the atmosphere.

The heat dissipation characteristic measuring apparatus 100 according to the present invention includes a method of measuring heat dissipation characteristics by directly applying heat to the heat dissipating member HS through the heat source unit 160 and applying heat to a medium to which the heat dissipating member is attached to You can use a method of measuring.

5 shows a method of measuring heat dissipation characteristics by directly applying heat to the heat dissipating member HS through the heat source unit 160, and FIG. 6 is a method for measuring heat dissipation characteristics by applying heat to a medium to which the heat dissipating member is attached. Shows how.

As shown in FIG. 5, the heat dissipation member HS is directly placed on the transmission plate 170, and a heat insulator HI is provided on the side (periphery) of the heat dissipation member HS. The heat dissipation member HS directly receives the light heat source supplied from the heat source unit 160 and changes in temperature. At this time, since the heat insulating material HI surrounds the heat dissipating member HS, only the light heat source directly contacting the heat dissipating member HS is used to cause a temperature change of the heat dissipating member HS, and thus more precise measurement is possible.

Meanwhile, as shown in FIG. 6, a light heat source may be supplied to the heat dissipating member HS in a state in which it is in contact with, adhered to, or attached to the medium 185. More specifically, the medium 185 may contact, adhere or be attached to the lower surface (lower) of the heat dissipation member HS. In addition, an insulating material HI may be disposed on the side (periphery) of the heat dissipating member HS and the medium 185 to block heat transfer.

As the medium 185, a specimen (metal or non-metal) of which physical properties are known may be used. By using the target material (object) that the heat dissipation member HS, which is the target of the heat dissipation characteristic measurement, as the medium 185, it is possible to perform various measurements in a form similar to the actual use condition.

Through the temperature measurement at both ends of the medium 185, heat flux can be measured during the heating process. In other words, it is possible to measure the heat flux by measuring a temperature change between the upper surface of the medium 185 that the heat dissipating member HS contacts and the lower surface of the medium 185 facing the heat source unit 160.

7 shows a configuration for performing heat flux measurement in the heat dissipation characteristic measuring apparatus 100 according to the present invention. In the heat dissipation characteristic measuring apparatus 100 according to the present invention, the temperature difference (temperature change) between the upper surface of the medium 185 in contact with the heat dissipation member HS and the lower surface of the medium 185 facing the heat source 160 is a medium ( It includes a thermocouple 180 connected to the upper surface of 185 and the lower surface of the medium 185.

Since the thermal interface adhesion between the medium 185 and the heat dissipation member HS may affect the measurement result, it is preferable that the heat dissipation member HS is adhered in the same or similar manner as the form actually used. In addition, when attaching the heat dissipating member HS to the medium 185, it is preferable to form a thermal interface having a higher thermal conductivity than the thermal conductivity of each member.

8 shows a coating method for improving the measurement reliability of the heat dissipation characteristic measuring apparatus 100 according to the present invention. The lower surface of the medium 185 is formed with a light-absorbing coating (C1) to promote light absorption and uniformly absorb the light, and the lower surface of the insulating material (HI) has a light-reflective coating (C2) that promotes light reflection. It is preferably made.

Specifically, the lower surface of the medium 185 may be coated with carbon so that the medium 185 can efficiently absorb light. On the other hand, areas other than the area where the medium 185 absorbs light (the area where the insulating material HI is located) may be subjected to surface polishing or coated with a reflective material to reduce light absorption. This blocking is to effectively prevent the medium 185 from changing the temperature only by the heat supplied from the heat source unit 160 and transferring heat from other places.

On the other hand, the convection chamber 110 is also made into a vacuum, and the heat capacity of the measurement object (the medium 185 and/or the heat dissipation member HS) can be measured. In order to measure the amount of radiant heat of the measurement object (the medium 185 and/or the heat dissipation member HS), the area excluding the emission area is blocked with a reflector, and the measurement object (medium The heat capacity of 185 and/or the heat dissipation member HS can be measured. To this end, a vacuum chamber (not shown) which is accommodated in the convection chamber 110 and is disposed on the measurement object (the medium 185 and/or the heat dissipation member HS) to perform radiant heat radiation may be further included. have.

If the heat dissipation characteristics of the heat dissipation material HS can be confirmed by the medium 185, the measurement object (the medium 185 or the heat dissipation member HS, or the heat dissipation attached to the medium 185) through a vacuum chamber (not shown) It is possible to check the heat capacity of the member (HS). In order to calculate various physical properties by substituting the identified parameters required for heat transfer calculation, a vacuum is created through a vacuum chamber (not shown) to block energy inflow and outflow. In this case, it is desirable to minimize the heat radiated by plating the inside of the vacuum chamber (not shown) with a material having a reflectivity. However, in the case of measuring only radiant heat, the radiant heat emitted from a certain area of the heat dissipating member (HS) may be radiated to the outside by taking into account the view factor. It is preferable that it is made of a material having light transmittance.

9A and 9B show examples of implementation of the device 100 for measuring heat dissipation characteristics according to the present invention. 9A, the heat dissipation characteristic measuring apparatus 100 according to the present invention includes a convection chamber 110 and a heat source chamber 120, and a vacuum for maintaining a vacuum state inside the heat source chamber 120 A pump 125 is disposed.

Meanwhile, an air injection port 115 for simulating a convection condition is installed inside the convection chamber 110, and the air injection port 115 has one end inserted into and fixed to a curved (cylindrical) guide groove, and an air injection port ( As one end of 115) moves along the guide groove, the direction of air applied to the heat dissipating member is changed.

In the simulation of convection conditions, convection intensity, convection direction, Reynolds number, temperature/humidity, gas component ratio, etc. should be appropriately controlled, and the heat dissipation characteristic measuring apparatus 100 according to the present invention controls the temperature/humidity of the injected air. The furnace is injected through an air compressor, and is injected through the air injection port 115 by adjusting the pressure and air volume of the injected air compressor with a regulator or the like. The position of the air injection port 115 can be adjusted at the top of the heat dissipating member as shown in FIGS. 9A and 9B, and is configured to adjust a specific distance and a specific angle with the heat dissipating member. An air conditioning unit may be further included to prevent the air injected from the air injection port 115 and in contact with the heat dissipating member from affecting the measured environmental temperature. As described above, the air conditioning unit may include a fan for exhausting internal air or introducing external air, or a window that can be opened or closed.

Since the heat dissipation characteristic measuring apparatus 100 according to the present invention aims to accurately investigate, control, and measure the amount of heat, various measurements may be performed according to a measurement location, a sensor type, and a method of use. The controller for controlling the driving of the heat dissipation characteristic measuring device 100 according to the present invention is a'time-specified' method of measuring a temperature change by applying a specific amount of heat for a specified time, and a change in time reaching a specified temperature with a specific amount of heat. 'Temperature-specific' method, a method of measuring the maximum temperature/reach time, etc. in a steady state, a method of evaluating the pattern of the temperature time series and the deformation of a substance during repetitive thermal loads of a certain period, according to convection conditions. There are ways to measure changes, etc.

10A to 10F are graphs showing various measurement values measured by the heat dissipation characteristic measuring apparatus 100 according to the present invention.

The convection model of the convection chamber 110 in the heat dissipation characteristic measuring apparatus 100 according to the present invention includes the following three models.

① Natural convection

② Forced: Adjusts wind speed, air volume, spray angle, temperature and humidity, and air composition

③ Vacuum: measure the amount of heat absorbed, specific heat, and radiant heat

Meanwhile, the temperature control method in the heat dissipation characteristic measuring apparatus 100 according to the present invention is an example of the following three control methods, and various other methods exist.

① Steady state: A certain amount of energy is continuously irradiated to reach an equilibrium state without temperature change. After that, the characteristics are evaluated at that temperature or the cooling pattern is evaluated by blocking the heat source.

② Temperature designation method (Temp): A certain amount of energy is irradiated from a certain low temperature to a certain high temperature and the required time is measured. After that, the characteristics are evaluated at that temperature or the cooling pattern is evaluated by blocking the heat source.

③ Time setting method: At a specific low temperature, the maximum temperature is measured by irradiating constant energy for a certain period of time. After that, the characteristics are evaluated at that temperature or the cooling pattern is evaluated by blocking the heat source.

FIG. 10A is a graph calculated by dividing a temperature difference from a specified specific high temperature to a specific low temperature by a required time, and measured by changing the model of the convection chamber 110.

FIG. 10B is a graph in which heat flux passing through the medium 185 is measured by measuring the temperature at both ends of the medium 185 having a clear thermal conductivity and a structure through the thermocouple 180. At this time, the amount of heat conducted (heat transfer amount) calculated through the heat flux is the same as the amount of heat released into the atmosphere.

10C is a graph measuring the calorific value. During the cooling process, since there is no temperature difference between both ends of the workpiece (medium 185 and/or heat dissipation member (HS)), it is measured through the calculation formula of the heat quantity (Q=mCΔt), and the mass (m) is a measurable value, and Δt is It can be calculated by considering the internal temperature change. Since one side of the heat dissipation characteristic measuring apparatus 100 according to the present invention is insulated, the average temperature of the insulated side and the side exposed to the atmosphere may be used. In addition, the specific heat (C) can be obtained using other thermal property test methods.

10D and 10E are graphs measuring the maximum temperature through a thermal balance control method and a time designation control method. The maximum temperature reached when a certain amount of thermal energy is irradiated (equilibrium temperature in thermal equilibrium) is measured.

10F is a graph measuring the time to reach the high point through a temperature-designated control method. The time to reach the peak can also be measured by a steady state control method, and represents the time lapse when a certain amount of thermal energy is continuously irradiated until a certain high temperature is reached.

According to the heat dissipation characteristic measuring apparatus 100 according to the present invention, it is possible to control convection conditions and a high-speed heat source, and it is possible to measure heat dissipation characteristics by applying to various types of new materials.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can be implemented in other specific forms without changing the technical spirit or essential features. You can understand. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting.

100: heat dissipation characteristic measuring device
110: convection chamber
115: air nozzle
120: heat source chamber
130: air conditioning department
140: thermal imager
150: lens unit
160: heat source
170: transmission part
180: thermocouple
185: medium
HS: heat dissipation member
HI: insulation

Claims (9)

A vacuum heat source chamber accommodating a heat source unit irradiating a light heat source;
A convection chamber connected in series to the heat source chamber, having a space separated from the space of the heat source chamber, and accommodating an air injection port for adjusting a convection condition;
A transmission plate installed in a hole formed between the heat source chamber and the convection chamber to block spaces on both sides of the heat source chamber and the convection chamber, and a heat dissipating member disposed on an upper surface thereof; And
Including; a sensor unit for measuring the heat radiation characteristics of the heat radiation member disposed on the transmission plate,
A medium of a metal or non-metal material disposed under the heat dissipating member;
A thermocouple for measuring a heat flux during a temperature raising process by sensing a temperature difference between the upper and lower surfaces of the medium; And
It is installed on the transmission plate and is disposed on the side of the heat dissipation member and the medium to block heat transfer, and a cylindrical acrylic heat insulating material; further includes,
An apparatus for measuring heat dissipation properties in which a lower surface of the medium is formed with a light-absorbing coating of a carbon coating agent for promoting absorption of light, and a lower surface of the insulating material is surface-polished or a light-reflective coating for reflecting light. delete delete delete The method of claim 1,
The heat dissipation characteristic measuring apparatus further comprises a vacuum chamber accommodated in the convection chamber and disposed on the medium and the heat dissipation member so as to achieve radiant heat dissipation. The method of claim 1,
The convection chamber further includes a curved guide groove into which one end of the air injection port is inserted, wherein one end of the air injection port moves along the curved guide groove so that the direction of air applied to the radiating member is changed. Characteristic measurement device. The method of claim 1,
A lens unit disposed between the transmission plate and the heat source unit to control a moving direction of the light generated from the heat source unit. The method of claim 1,
The sensor unit heat dissipation characteristic measuring apparatus including at least one of a thermometer, a hygrometer, a thermal imaging camera, and a wind vane. The method of claim 1,
The convection chamber further comprises an air conditioning unit for controlling atmospheric pressure and humidity in the chamber.

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