JP2022187846A - Heat sensor, thermal effect evaluation system, and thermal effect evaluation method - Google Patents

Abstract

To provide a heat sensor, a thermal effect evaluation system and a thermal effect evaluation method which perform thermal effect evaluation simply and accurately.SOLUTION: A heat insulating material 140 is planar. A thermal reaction film 130 is arranged on one plane of the heat insulating material 140. A light shielding film 120 comes into contact with the surface of the thermal reaction film 130 that is reverse to the heat insulating material 140 to cover the thermal reaction film 130 and reduces the received amount of heat of the thermal reaction film 130. A heat insulating material 110 is arranged on the side of the light shielding film 120 that is reverse to the thermal reaction film 130 and comes in a planar shape having an opening 111 where the thermal reaction film 130 is seen through the light shielding film 120, sandwiching the thermal reaction film 130 and the light shielding film 120 together with the heat insulating material 140.SELECTED DRAWING: Figure 3

Description

Application for application of Article 30, Paragraph 2 of the Patent Act is filed Date of mail: May 11, 2021 The Institute of Electrical Engineers of Japan

The present invention relates to a thermal sensor, a thermal impact assessment system and a thermal impact assessment method.

In the electric power distribution industry, there is a demand for safe and secure facility formation that does not lead to a public disaster even in the event of a short-circuit failure. For example, in various electric power facilities, if a flashover occurs due to a lightning strike, deterioration of insulation performance due to deterioration of materials, Newman's error, etc., there is a possibility that a short circuit failure will occur. Arcs generated by short-circuit faults have a high temperature of several thousand to tens of thousands of degrees at the center, and instantaneously emit a large amount of energy and strong radiant light, so damage to equipment and thermal effects from the arc to the surroundings are minimized. Concerned. Therefore, it is important to evaluate the thermal effects of the arc generated by the short circuit fault on the surroundings.

For example, conventionally, test methods for switchgears, lightning arresters, etc. have been stipulated for the purpose of ensuring public safety when an arc occurs inside electric power equipment. In addition, in order to evaluate the arc resistance performance of protective equipment, test methods have been established for work clothes, protective masks, high-pressure rubber gloves, and the like worn by workers. In these tests, a calorimeter using a black cotton cloth indicator and a thermocouple is used as a method of estimating the thermal effect of the arc.

Indicators are stipulated in standards for internal arcs in equipment such as switchgear. Indicators are arranged in a checkerboard pattern around the equipment. Thermal effects are determined.

JP 2019-087111 A

IEC 62271-200:2011, High-voltage switchgear and controlgear Part 200: AC metal-enclosed switchgear and controlgear for rated voltages about 1kV and up to and including 52kV. IEC 61482-1-1:2019, Live working-Protective clothing against the thermal hazards of an electric arc-Part 1-1: Test methods-Method 1: Determination of the arc rating (ELIM, ATPV and/or EBT) of clothing Materials and of protective clothing using an open arc.

However, with the conventional evaluation method, it is difficult to easily and accurately evaluate the thermal effects in a wide space, multiple points, or a closed space in an electrical equipment facility. For example, indicators are difficult to measure quantitatively. In addition, there is a risk that the indicator may ignite due to the melted and scattered matter, making it difficult to accurately evaluate the thermal effects. In addition, although the calorimeter is excellent in quantitative performance, it is required to prepare a waveform recorder or the like to measure electric power using a thermocouple, which complicates the measurement operation. In addition, a thermocouple is laid from the calorimeter main body to the waveform recorder, which makes it difficult to work in closed spaces such as electrical equipment facilities.

The disclosed technology has been made in view of the above, and aims to provide a thermal sensor, a thermal effect evaluation system, and a thermal effect evaluation method that perform thermal effect evaluation simply and accurately.

In one aspect of the thermal sensor, the thermal impact assessment system, and the thermal impact assessment method disclosed in the present application, the first heat insulating material is flat. A heat-reactive film is disposed on one surface of the first heat insulating material. A light-shielding film covers the heat-reactive film in contact with the surface opposite to the first heat insulating material of the heat-reactive film, thereby reducing the amount of heat received by the heat-reactive film. The second heat insulating material is disposed on the opposite side of the heat-reactive film of the light-shielding film, and has a flat plate shape having an opening through which the heat-reactive film can be seen through the light-shielding film. is sandwiched with the first heat insulating material.

In one aspect, the present invention can easily and accurately evaluate thermal effects.

FIG. 1 is a block diagram of a thermal effect assessment system according to an embodiment. FIG. 2 is a perspective view of a thermal sensor according to an embodiment. FIG. 3 is a cross-sectional view of a thermal sensor according to an embodiment. FIG. 4 is a diagram showing the relationship between the CMY values of a heat-responsive film and the amount of heat received in a test using a quartz heater. FIG. 5 is a diagram showing the relationship between the amount of heat received and the MY/C value in a test using a quartz heater. FIG. 6 is a diagram showing the CMY values of the reaction colors of the heat-reactive film in the arc test. FIG. 7 is a diagram showing the relationship between the amount of heat received and the MY/C value in an arc test. FIG. 8 is a flowchart of thermal effect evaluation processing.

Embodiments of the thermal sensor, the thermal effect evaluation system, and the thermal effect evaluation method disclosed in the present application will be described in detail below with reference to the drawings. It should be noted that the thermal sensor, the thermal effect evaluation system, and the thermal effect evaluation method disclosed in the present application are not limited to the following examples.

FIG. 1 is a block diagram of a thermal effect assessment system according to an embodiment. The thermal effect evaluation system 1 evaluates the amount of heat generated by the arc generated in the power equipment 10 . The thermal effect evaluation system 1 has a heat sensor 100 and a received heat amount calculation device 20 .

Thermal sensor 100 has a thermally responsive film 130 . The thermal sensor 100 is installed 300 mm away from the arc source 11 . This distance is the distance specified by the standards for evaluating the arc resistance performance of work clothes. If another evaluation standard is used, the distance between thermal sensor 100 and arc source 11 is preferably adjusted according to the standard. Thermal sensor 100 receives heat from an arc generated from arc source 11 installed in power equipment 10 . The heat reaction film 130 reacts and develops color by receiving heat from the arc.

FIG. 2 is a perspective view of a thermal sensor according to an embodiment. Also, FIG. 3 is a cross-sectional view of the thermal sensor according to the embodiment. FIG. 3 shows an A-A' section of the thermal sensor 100 shown in FIG.

The thermal sensor 100 has a thermal insulator 110 as shown in FIG. Furthermore, the thermal sensor 100 has a light shielding film 120, a heat responsive film 130 and a heat insulating material 140, as shown in FIGS.

Thermal insulator 110 has openings 111 . A ceramic plate can be used for the heat insulating material 110 . The heat insulating material 110 according to this embodiment has a square shape with a side of 80 mm and a thickness of 12 mm. The opening 111 is circular with a diameter of 60 mm in this example. The opening 111 is a through hole penetrating the heat insulating material 110 . However, it is preferable that the size and shape of the heat insulating material 110 and the size and shape of the opening 111 are determined according to the usage conditions.

In the heat sensor 100 in which the heat insulating material 110 and the heat insulating material 140 are arranged side by side as shown in FIG. get heat. In the following description, the side of each layer that receives the heat of the arc will be referred to as the heat-receiving side. This heat insulating material 110 corresponds to an example of a "second heat insulating material".

Heat-reactive film 130 is sandwiched between heat insulating material 110 and heat insulating material 140 . The heat-reactive film 130 is a film that reacts with heat to develop color. The thickness of the heat-reactive film 130 according to this embodiment is about 100 μm. The heat-reactive film 130 receives the heat of the arc that has passed through the openings 111 of the heat insulating material 110 and the light-shielding film 200, and develops a color according to the amount of received heat.

The heat-responsive film 130 is a film that develops different colors according to the amount of heat received. The heat-reactive film 130 is formed, for example, by mounting a heat-sensitive coloring agent on a film made of transparent PEN (polyethylene naphthalate) resin as a support, and then covering the film with a protective layer. The thermally responsive film 130 represents heat distribution with color changes.

Cyan and magenta colors are used as color formers for receiving heat in the heat-reactive film 130 according to this embodiment. Then, the heat-reactive film 130 develops reaction colors such as cyan and magenta according to the amount of heat received.

A light-shielding film 120 is provided between the heat insulating material 110 and the heat-reactive film 130 . In other words, the light shielding film 120 is provided on the heat receiving surface side of the heat reaction film 130 . The light shielding film 120 is a polyimide film. The light shielding film 120 has a thickness of 50 μm, for example. The light shielding film 120 is a protective film with high heat resistance. The light-shielding film 120 protects the heat-reactive film 130 from arc heat and the like. The light-shielding film 120 and the heat-reactive film 130 are arranged in contact with each other. By bringing the light-shielding film 120 and the heat-reactive film 130 into close contact with each other in this way, it is possible to suppress changes in the reaction color of the heat-reactive film 130 due to the state of the space between the heat-reactive film 130 and the light-shielding film 120 .

For the heat insulating material 140, for example, Lumiboard, which is made mainly of calcium silicate and contains special reinforcing fibers, can be used. The heat insulating material 140 according to this embodiment has a square shape with a side of 80 mm and a thickness of 12 mm. The heat insulating material 140 is provided with a concave portion 141 at a position facing the opening 111 of the heat insulating material 110, that is, on the side where the heat-reactive film 130 is arranged. The recess 141 is, for example, a space having a circular opening with a diameter of 40 mm and a depth of 9.5 mm. Since the heat insulating material 140 has a large specific heat, the temperature rise is small. Therefore, when the heat-insulating material 140 and the heat-reactive film 130 are in contact with each other, the temperature rise of the heat-reactive film 130 is reduced, resulting in poor color development. Therefore, by forming a space between the heat-reactive film 130 and the heat-insulating material 140 by the concave portion 141, the temperature of the heat-reactive film 130 can be reliably increased and appropriate color development can be performed. This heat insulating material 140 corresponds to an example of the "first heat insulating material".

Here, if the temperature of the heat-reactive film 130 is sufficiently increased even without the recesses 141, the heat insulating material 140 does not need to be provided with the recesses 141. FIG. It is preferable that the size and shape of the heat insulating material 140 and the presence/absence, size and shape of the recess 141 are determined according to the usage conditions. However, if the shape of the heat insulating material 140 is different, the color development of the heat-reactive film 130 with respect to the amount of heat received will be different. Must be avoided.

Returning to FIG. 1, the description continues. The received heat amount calculation device 20 calculates the amount of received heat using the heat reaction film 130 held by the thermal sensor 100 that receives the heat generated by the arc. The received heat calculation device 20 is implemented by, for example, a computer having a processor, memory and hard disk.

The received heat calculation device 20 will be described below. The received heat calculation device 20 includes a reading unit 21, a conversion unit 22, a cutting unit 23, a received heat calculation unit 24, a notification unit 25, and a function storage unit 26, as shown in FIG. The functions of the reading unit 21, the conversion unit 22, the extraction unit 23, the received heat amount calculation unit 24, and the notification unit 25 are realized by, for example, a processor. Also, the function of the function storage unit 26 is implemented by, for example, a hard disk.

The heat-responsive film 130 colored by receiving heat is removed from the heat sensor 100 . The reading unit 21 reads the color of each position of the heat reaction film 130 as RGB (Red Green Blue) values. The reading unit 21 then outputs the RGB values of the colors at each position on the heat reaction film 130 to the converting unit 22 . Here, each position is the position of each pixel of the read image, or the position of a predetermined point when the read image is arranged in a predetermined coordinate system.

The conversion unit 22 receives input of the RGB values of the colors at each position on the heat reaction film 130 from the reading unit 21 . Next, the conversion unit 22 converts the RGB values of the colors at each position on the thermal reaction film 130 into CMY (Cyan Magenta Yellow) values. The conversion unit 22 then outputs the CMY values of the colors at each position on the heat reaction film 130 to the cutout unit 23 .

The cutout unit 23 receives input of the CMY values of the colors at each position on the heat reaction film 130 from the conversion unit 22 . Then, the cutting part 23 cuts out a 2 cm square area in the center of the heat reaction film 130 . Here, the 2 cm square area at the center is a square area of 2 cm on a side where the point corresponding to the center of the opening 111 is the intersection of the diagonal lines. For example, the cutout unit 23 can determine the area by receiving input of information on the position corresponding to the center of the opening 111 . However, the method of cutting out the region is not limited to this, and the shape to be cut out may be any other shape as long as it can be cut out so that the portion where the color reacts extends over the entire region that has been cut out. The cutout unit 23 outputs the CMY values of the color at each position of the cutout region to the received heat amount calculation unit 24 .

The function storage unit 26 is, for example, a hard disk. The function storage unit 26 stores in advance a heat-receiving amount calculation function representing the relationship between the CMY values of the reaction colors of the heat-reactive film 130 and the heat-receiving amount.

Here, a heat reception amount calculation function representing the relationship between the CMY values of the reaction colors of the heat reaction film 130 and the heat reception amount used by the heat reception amount calculation device 20 according to the present embodiment will be described. The relationship between the CMY values of the heat-responsive film 130 and the amount of heat received will be described in the case of conducting a test using a quartz heater, which is easy to control heat, in order to specify the function for calculating the amount of heat received.

In this case, the heat-reactive film 130 is exposed to heat from a quartz heater that outputs a constant amount of heat, so that the heat-receiving film 130 develops color. Further, the amount of heat received by the heat-reactive film 130 is determined by installing a calorimeter in place of the heat-reactive film 130 and evaluating the amount of heat with the calorimeter. That is, the amount of heat received here is the amount of heat before passing through the light shielding film 120 .

FIG. 4 is a diagram showing the relationship between the CMY values of a heat-responsive film and the amount of heat received in a test using a quartz heater. In FIG. 4, the horizontal axis represents the amount of heat received, and the vertical axis represents the CMY values. Graph 201 represents changes in C values, which are cyan values, graph 202 represents changes in M values, which are magenta values, and graph 203 represents changes in Y values, which are yellow values.

As shown in FIG. 4, in the test using the quartz heater, the CMY values of the reaction colors of the heat-responsive film 130 depend on the amount of heat received. Since the test sample develops color in a region where the amount of heat received is small, the C value increases. As the amount of heat received increases, the M value increases as magenta color develops.

As a result, the C value has a maximum with respect to the amount of heat received, the M value increases as the amount of heat received increases and has a saturation region, and the Y value increases gently with the increase in the amount of heat received. The measurement range of the amount of heat received by the heat sensor 100 under the measurement conditions using the quartz heater as the heat source is 50 kJ/m ² to 162 kJ/m ² in which the coloring of the heat-reactive film 130 can be recognized.

In this way, the CMY values of the reaction colors of the heat-responsive film 130 have maximum and saturated regions with respect to the amount of heat received. Therefore, the following parameters are introduced so that the relationship between the reaction color of the heat-responsive film 130 and the amount of heat received becomes unique and increases monotonously.

Specifically, a parameter of M value×Y value/C value is introduced. In the following, this parameter will be referred to as the MY/C value. FIG. 5 is a diagram showing the relationship between the amount of heat received and the MY/C value in a test using a quartz heater. In FIG. 5, the horizontal axis represents the amount of heat received, and the vertical axis represents the MY/C value.

A graph 210 in FIG. 5 is a curve obtained by plotting the MY/C values obtained from the measurement results corresponding to each amount of heat received on a coordinate space and approximating them with a sigmoid function. Graph 210 is represented by the following equation (1). where K ₀ =2.90, K ₁ =242.7, K ₂ =123.5 and K ₃ =13.0.

As shown in graph 210, the MY/C value can be approximated accurately by a sigmoid function. A curve approximated using this sigmoid function can uniquely represent the reaction color of the heat-responsive film 130 with respect to the amount of heat received.

Next, a case where an arc test in which an arc is generated and heat is received by the thermal sensor 100 is performed as a test assuming the electric power equipment 10 will be described. FIG. 6 is a diagram showing the CMY values of the reaction colors of the heat-reactive film in the arc test. Graph 221 represents the C value of the reaction color of the heat responsive film 130 , graph 222 represents the M value of the reaction color of the heat responsive film 130 , and graph 223 represents the Y value of the reaction color of the heat responsive film 130 . In graphs 221 to 223, the horizontal axis represents the amount of heat received, and the vertical axis represents the C value, M value, and Y value.

As shown in FIG. 6, in the arc test, the tendency of the amount of heat received, such as the increase and decrease of the CMY values, and the peak and saturation regions, is the same as in the test using the quartz heater. However, the relationship between the CMY values of the reaction colors of the heat reaction film 130 and the amount of heat received differs quantitatively. For example, the maximum value and the state of the maximum, such as whether it is steep or calm, are different for each.

FIG. 7 is a diagram showing the relationship between the amount of heat received and the MY/C value in an arc test. In FIG. 7, the horizontal axis represents the amount of heat received, and the vertical axis represents the MY/C value.

Graph 230 in FIG. 7 approximates points obtained by calculating MY/C values from the C value, M value, and Y value shown in FIG. curve. In this case, K ₀ =4.68, K ₁ =1084, K ₂ =346.2 and K ₃ =47.5. In this way, even in the case of the arc test, by using a curve that approximates the MY/C value of the reaction color of the heat-reactive film 130 obtained by the test using a sigmoid function, the MY/C value and the amount of heat received are A monotonically increasing function can be obtained that uniquely associates with . However, the curve calculated here is an example of values for approximating the plotted points of the C value, M value, and Y value obtained this time. Therefore, the shape and coefficients of the fitting function are preferably determined so as to appropriately approximate points obtained by plotting the measured C, M, and Y values on the coordinate space.

Therefore, by using the function shown by the graph 230 in FIG. 7, for example, when an arc occurs inside the power equipment 10 in which the thermal sensor 100 is installed, the amount of heat received by the arc can be calculated. Therefore, the function storage unit 26 stores a monotonically increasing function that uniquely associates the MY/C value shown in the graph 230 with the received heat amount as a received heat amount calculation function.

Returning to FIG. 1, the description continues. The received heat amount calculation unit 24 receives input of the CMY values of the colors at each position of the cut-out region from the cut-out unit 23 . Then, the heat-receiving amount calculation unit 24 takes the values obtained by averaging the C, M, and Y values at each position as the CMY values of the reaction color of the heat-reactive film 130 developed by receiving heat. Here, the received heat amount calculation unit 24 can perform averaging, for example, by calculating the average values of the C value, the M value, and the Y value.

After that, the heat reception amount calculation unit 24 acquires from the function storage unit 26 a heat reception amount calculation function representing the relationship between the MY/C value of the reaction color of the heat-reactive film 130 and the heat reception amount stored in the function storage unit 26 . Then, the received heat amount calculation unit 24 obtains the amount of heat received by the heat sensor 100 using the CMY values of the colors of the heat-reactive film 130 for the received heat amount calculation function.

Specifically, the received heat calculation unit 24 calculates the MY/C values of the reaction colors of the heat reaction film 130 from the CMY values of the reaction colors of the heat reaction film 130 . Next, the received heat amount calculation unit 24 obtains the received heat amount corresponding to the calculated MY/C value from the received heat amount calculation function indicated by the graph 230 in FIG. Thereby, the received heat amount calculation unit 24 can obtain the amount of heat received by the arc generated from the arc source 11 of the power equipment 10 . After that, the received heat amount calculation unit 24 outputs the obtained information on the received heat amount of the heat sensor 100 to the notification unit 25 .

The notification unit 25 receives input of information on the amount of heat received by the heat sensor 100 from the heat amount calculation unit 24 . Then, the notification unit 25 notifies the administrator of the power equipment 10 of the thermal effect evaluation result by displaying the calculation result of the amount of heat received by the thermal sensor 100 on a display device (not shown) such as a monitor.

FIG. 8 is a flowchart of thermal effect evaluation processing. Next, a method of calculating the CMY values of the heat-responsive film 130 when the heat sensor 100 receives heat will be described with reference to FIG.

The operator removes and acquires the heat-reactive film 130 colored by receiving heat from the heat sensor 100 (step S1).

The reading unit 21 reads the color of each position of the heat reaction film 130 as RGB values (step S2).

Next, the conversion unit 22 converts the read RGB values into CMY values (step S3).

Next, the cutout section 23 cuts out a color-reacted region of the read thermal reaction film 130 (step S4).

Next, the received heat amount calculation unit 24 acquires the CMY values at each position in the cut out region from the cutout unit 23 (step S5).

Next, the received heat amount calculation unit 24 calculates values obtained by averaging the C value, M value, and Y value at each position, and calculates the CMY values of the reaction color of the heat-reactive film 130 that develops color due to the heat reception. (step S6).

Next, the received heat amount calculator 24 calculates the MY/C values of the reaction color of the heat reaction film 130 from the CMY values of the reaction color of the heat reaction film 130 (step S7).

Next, the received heat amount calculation unit 24 acquires the received heat amount calculation function from the function storage unit 26 . Then, the received heat amount calculation unit 24 calculates the received heat amount corresponding to the MY/C value of the reaction color of the heat reaction film 130 using the received heat amount calculation function (step S8).

The notification unit 25 displays the amount of heat received by the heat sensor 100 calculated by the heat reception amount calculation unit 24 on a monitor or the like, and notifies the evaluation result of the thermal influence (step S9).

As described above, the heat sensor according to this embodiment has a structure in which the heat-reactive film whose heat-receiving surface side is covered with a light-shielding film is sandwiched between heat insulating materials having openings on the heat-receiving surface side. . This makes it possible to determine the amount of heat received from the reaction color of the heat-reactive film in the heat sensor that received heat when an arc was generated. Therefore, thermal effect evaluation can be performed simply.

In addition, the thermal effect evaluation system according to the present embodiment uses a heat-receiving amount calculation function that monotonically increases and uniquely expresses the relationship between the MY/C value and the heat-receiving amount. Calculate the amount of heat received. As a result, the thermal effect evaluation system can accurately calculate the amount of heat received, and can perform the thermal effect evaluation accurately.

(Modification)
Next, a modified example will be described. As the heat generated by the arc passes through the light shielding film 120, the amount of heat received by the heat reaction film 130 is reduced. Therefore, the heat sensor 100 can adjust the range of the amount of heat received by the heat reaction film 130 by changing the thickness of the light shielding film 120 to adjust the amount of light shielding.

For example, when the thickness of the heat-reactive film 130 is 50 μm, the amount of heat received by the heat-reactive film 130 is 50% of the amount of heat generated by the arc. may be 25% of the

That is, at a location where the amount of heat from the generated arc is assumed to be high, the amount of light shielding by the light shielding film 120 can be increased to suppress the amount of heat received by the heat reaction film 130 . Also, at locations where the amount of heat from the generated arc is assumed to be low, the amount of light shielding by the light shielding film 120 can be reduced so that the amount of heat received by the heat reaction film 130 is not increased or decreased. As a result, the CMY values of the reaction colors of the heat reaction film 130 can be appropriately distributed within the measurable range, and the calculation accuracy of the heat reception amount can be improved.

However, in this case, the received heat amount calculation function representing the relationship between the MY/C value and the received heat amount shown in FIG. It is preferable to obtain the amount of received heat using a received heat amount calculation function corresponding to the amount of light shielded by the light shielding film 120 .

Therefore, the function storage unit 26 stores in advance a heat reception amount calculation function representing the relationship between the MY/C value and the heat reception amount, which are obtained according to the light shielding amount of the light shielding film 120 and illustrated in FIG.

The received heat calculation unit 24 acquires information on the light shielding film 120 used in the heat sensor 100 to be evaluated. Then, the received heat amount calculation unit 24 acquires the received heat amount calculation function corresponding to the amount of light shielding of the light shielding film 120 used from the function storage unit 26 and calculates the amount of received heat.

As described above, the heat sensor according to the present embodiment can adjust the range of the amount of heat received by the heat-responsive film by changing the light shielding amount of the light shielding film. This makes it possible to adjust the range of the amount of heat received by the heat-reactive film according to the assumed arc, and to accurately calculate the amount of heat received regardless of the amount of heat received from the arc, and accurately evaluate the thermal effects. can be done.

REFERENCE SIGNS LIST 1 thermal effect evaluation system 10 electric power equipment 11 arc source 20 received heat calculation device 21 reading unit 22 conversion unit 23 extraction unit 24 received heat calculation unit 25 notification unit 26 function storage unit 100 heat sensor 110 heat insulating material 111 opening 120 light shielding Film 130 Heat Reactive Film 140 Heat Insulating Material 141 Recess

Claims (8)

a flat first heat insulating material; a heat-reactive film disposed on one surface of the first heat insulating material;
a light-shielding film that covers the heat-reactive film in contact with the surface of the heat-reactive film opposite to the first heat insulating material to reduce the amount of heat received by the heat-reactive film;
The heat-reactive film is disposed on the side opposite to the heat-reactive film of the light-shielding film, and has a flat plate shape having an opening through which the heat-reactive film can be seen through the light-shielding film. and a second heat insulating material sandwiched between and. 2. The thermal sensor according to claim 1, wherein the first heat insulating material has a recess forming a space with the heat-reactive film at a position facing the opening of the second heat insulating material. 3. The thermal sensor according to claim 1, wherein the heat-responsive film develops cyan and magenta colors according to the amount of heat received. 4. The thermal sensor according to any one of claims 1 to 3, wherein a reduction rate of the amount of heat received by said heat-responsive film by said light-shielding film is adjustable. A thermal effect evaluation system having a heat sensor and a heat receiving amount calculation device,
The thermal sensor is
a flat first heat insulating material; a heat-reactive film disposed on one surface of the first heat insulating material;
a light-shielding film that covers the heat-reactive film in contact with the surface of the heat-reactive film opposite to the first heat insulating material;
The heat-reactive film is disposed on the side opposite to the heat-reactive film of the light-shielding film, and has a flat plate shape having an opening through which the heat-reactive film can be seen through the light-shielding film. and a second heat insulating material sandwiched between
The received heat calculation device is
and a heat reception amount calculation unit that acquires the CMY values of the reaction colors of the heat reaction film and calculates the heat reception amount corresponding to the CMY values of the reaction color of the heat reaction film from a heat reception amount calculation function. thermal impact assessment system. The heat-reactive film develops cyan and magenta colors according to the amount of heat received,
The heat-receiving amount calculation unit calculates the MY/C value of the heat reaction film based on the MY/C value obtained by dividing the value obtained by multiplying the C value and the M value in the CMY values of the reaction colors of the heat reaction film by the Y value. 6. The thermal effect evaluation system according to claim 5, wherein the received heat amount corresponding to the CMY values of the reaction color is calculated using the received heat amount calculation function. 7. The thermal effect evaluation system according to claim 6, wherein the received heat amount calculation function is a monotonically increasing function that uniquely associates the MY/C value and the received heat amount. a flat plate-shaped first heat insulating material; a heat-reactive film disposed on one surface of the first heat-insulating material; a light-shielding film covering a film, and a flat plate-shaped light-shielding film disposed on a side opposite to the heat-reactive film and having an opening through which the heat-reactive film can be seen through the light-shielding film, wherein the heat-reactive film and the light-shielding A thermal effect evaluation method using a thermal sensor including a second heat insulating material sandwiching a film with the first heat insulating material,
causing the heat-reactive film to develop a color by the heat passing through the opening and the light-shielding film;
obtaining the CMY values of the reaction colors of the heat reaction film;
A thermal effect evaluation method, wherein the amount of heat received corresponding to the CMY values of the reaction colors of the heat-reactive film is calculated from a heat-receiving amount calculation function.

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