WO2019083080A1

WO2019083080A1 - Solar collector and manufacturing method therefor

Info

Publication number: WO2019083080A1
Application number: PCT/KR2017/013481
Authority: WO
Inventors: 김윤정
Original assignee: 김윤정
Priority date: 2017-10-24
Filing date: 2017-11-24
Publication date: 2019-05-02
Also published as: CN109983283A

Abstract

The present invention relates to a solar collector and a manufacturing method therefor. The solar collector according to the present invention comprises: a flexible heat-collecting part for accommodating a heat-collecting medium therein; a flexible heat-retaining part for encompassing the heat-collecting part and accommodating heat-retaining gas therein; and a reflective part provided to the heat-retaining part so as to reflect sunlight at the heat-collecting part, wherein the heat-retaining part comprises a first member including a material having light transparency, durability and thermal resistance, and a second member stacked on and coupled to the first member and made of a thermally adhesive material, the reflective part is located between the first member and the second member of the heat-retaining part, and the heat-collecting part comprises a third member including a material having durability, thermal resistance and printability, and a fourth member stacked on and coupled to the third member and made of a thermally adhesive material.

Description

Solar collector and manufacturing method thereof

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar collector and a manufacturing method thereof, and more particularly, to a solar collector having improved durability, manufacturability and the like, and a manufacturing method thereof.

Generally, a solar collector is a device that converts direct sunlight or scattered light of the sun into thermal energy, and it is the most important part in constructing a solar heat collection system. (Hereinafter referred to as "fixed type collector") and a collector which is installed in a limited place such as a roof of a building (hereinafter, referred to as "fixed type collector") and a collector Collectors').

Referring to FIG. 1, a conventional fixed type pneumatic collector 100 will be described as follows.

A heat collecting duct 120 through which air as a heating medium flows is arranged inside the case 110, and an inlet and an outlet are provided to allow air to flow in and out. The heat collecting duct 120 is formed in a zigzag fashion inside the case 110 by using a material having a high heat transfer efficiency such as aluminum. The heat collecting surface of the collector 100 is covered with transparent glass or polycarbonate. The collector 100 may be installed to be inclined at an angle with respect to the ground, but it may be installed perpendicular to the ground when the reflector 130 is placed as shown in FIG.

The process of collecting using the fixed type solar collector will be described as follows. When direct sunlight, reflected light, or scattered sun of the sun passes through the glass cover and touches the heat collecting duct 120, it is converted into thermal energy. Also, some of the sunlight heats the inside of the case 110 by the greenhouse effect, and the heat is transferred to the heat collecting duct 120 by the convection and conduction of the heated air. The heat transferred to the heat collecting duct 20 heats the air inside the heat collecting duct 120. The heated air exits the collector 100 through the outlet and is used for heating or hot water production as needed.

However, such a fixed type solar collector has a problem in that it is not free to install the collector in a limited place since the manufacturing cost is high and the shape is fixed, and it is not free to install the collector in a specific place and then move it to another place. Also, the installation and demolition of the collector is not free.

To solve the disadvantage of the fixed type solar collector as described above, it is a non-solid collector. Non-heating type collectors are proposed in Korean Patent Laid-Open Nos. 10-2008-0089954 and 10-2012-0046945.

Referring to Figs. 2 and 3, a conventional non-reciprocating pneumatic solar collector 200 will be described.

The non-heating solar collector 200 is provided with a flexible heat collecting part 210 for housing the heat collecting medium therein. And a warm keeping unit 220 surrounding the heat collecting unit 210 and containing a warming gas therein. A first reflector 230 of flexible material for reflecting sunlight around the heat collecting part 210 to the heat collecting part 210 is provided in a part of the warming part 220. Meanwhile, a protective film 240 of a flexible material surrounding the warming unit 220 and containing a warming gas is provided between the warming unit 220 and the ground. Further, a base film 250 is provided on the ground to prevent moisture penetration from the ground and reduce heat loss. In addition, a part of the base film 250 is provided with a reflection part 260 for reflecting sunlight.

It is preferable to use water or air that can be easily obtained from the surroundings as the current collecting body accommodated in the collecting part 210. It is preferable that the insulated gas accommodated in the insulating part 220 uses air. The sunlight passes through the protective film 240 and the warming portion 220 and directly goes to the heat collecting portion 210 or A to the collecting portion 210 to reach the collecting portion 210.

The heat collecting part 210 and the heat retaining part 220 are made of a flexible material so that they can swell when the heat collecting body or the heat insulating body is inserted. For this purpose, a vinyl resin is used as a flexible material in a conventional non-vacuum type collector. However, the use of a vinyl resin alone is not easy to manufacture. Also, as shown in FIG. 4, the heat collecting part 210 and the warming part 220 using a simple vinyl resin are easily broken (peeled off) during use, installation, or disassembly, resulting in insufficient durability. Therefore, there is a demand for development of a solar collector and a manufacturing method with improved manufacturability and durability.

An object of the present invention is to provide a solar collector which is excellent in heat collection performance and excellent in fabrication, durability, and the like, and a method of manufacturing the same.

In order to achieve the above object, according to an embodiment of the solar collector according to the present invention, there is provided a solar collector according to the present invention, comprising: a flexible heat collecting part for containing a heat collecting medium therein; And a reflector provided on the heat preservation unit and reflecting solar light to the heat collecting unit, wherein the heat preservation unit includes a first member made of a material having light permeability, durability and heat resistance, ; And a second member that is laminated to the first member and is made of a material having thermal adhesiveness, and the reflective portion is located between the first member and the second member of the thermal insulating portion, and the heat collecting portion has a durability, A third member made of a material having heat resistance and printability; And a fourth member laminated to the third member and made of a material having heat adhesion property.

Wherein the first member and the second member of the heat retaining portion are in the form of a thin plate and both side portions of the second member are positioned to face each other so that both side portions of the second member are thermally adhered to each other, . Alternatively, the warming units may be provided as a pair, and one of the pair may be provided with a reflecting unit, and both side portions of the second member of the pair of warming units may be positioned to face each other, The both side portions are thermally adhered to each other in a state of being in contact with each other, so that the insulating portion may have a predetermined shape.

The third member and the fourth member of the heat collecting portion are in the form of a thin plate, both side portions of the fourth member are positioned to face each other, and both side portions of the fourth member are thermally adhered to each other, Is preferably a predetermined shape.

The first member, the second member, the third member, and the fourth member are preferably plastic films. The first member of the heat retaining portion is a PET film, the second member is one of a PP film and a PE film, and the reflective portion is an aluminum thin film, and the third member of the heat collecting portion is made of the same material as the first member of the heat retaining portion More preferably, the fourth member is made of the same material as the second member of the heat retaining portion.

It is preferable that at least one of a portion of the first member of the heat preservation portion that is in contact with the reflective portion and a third member of the heat collection portion is a colored PET film.

Meanwhile, a fifth member made of a material having an air barrier property is provided between the first member and the second member of the heat retaining portion, and between the third member and the fourth member of the heat collecting portion, Six members may be provided. Preferably, the fifth member of the heat retaining portion and the sixth member of the heat collecting portion are nylon films.

According to another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising the steps of positioning a reflective portion between a first member made of a material having durability, heat resistance, and printability and a second member made of a material having thermal adhesiveness, A first step of laminating the first member and the second member by an adhesive; A second step of causing both side portions of the second member to be opposed to each other; And a third step of thermally adhering the second member in a state in which both side portions of the second member are in contact with each other to form a warming portion having a predetermined shape.

According to another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising the steps of: laminating a third member made of a material having durability, heat resistance, and printability, and a fourth member made of a material having thermal adhesiveness; A fifth step of causing both side portions of the fourth member to be opposed to each other; And a sixth step of forming a heat collecting part having a predetermined shape by thermally adhering both sides of the fourth member in contact with each other.

The first member, the second member, the third member, and the fourth member are preferably plastic films. Wherein the first member of the heat retaining portion is a PET film, the second member is one of a PP film and a PE film, the reflective portion is an aluminum thin film, the third member of the heat collecting portion is made of the same material as the first member of the heat retaining portion, More preferably, the four members are made of the same material as the second member of the heat retaining portion.

On the other hand, at least one of the first member of the heat insulating portion and the third member of the heat collecting portion is preferably a colored PET film.

The solar collector of the present invention and its manufacturing method have the following effects.

First, according to the present invention, the durability of the solar collector is increased, thereby preventing the collector from being damaged during use.

Second, according to the present invention, since a collector having a desired shape can be formed by thermal bonding at the time of manufacturing a solar collector, it is advantageous in that the collector can be easily manufactured. Further, according to the present invention, since the heat retaining portion and the heat collecting portion can be manufactured by using substantially the same manufacturing method, there is an advantage that manufacturing is easier.

Third, according to the present invention, there is an advantage that an inexpensive solar heat collector can be manufactured while maintaining the heat collection performance.

1 is a perspective view showing a conventional fixed type solar collector.

2 is a perspective view showing a conventional non-fixed solar collector.

3 is a sectional view of Fig. 2;

FIG. 4 is a photograph showing a state in which the heat collecting part and the thermal insulating part of the collector of FIG. 2 are broken.

5 is a sectional view showing a preferred embodiment of the solar collector according to the present invention.

FIG. 6 is a perspective view showing an embodiment of the insulating section of FIG. 5; FIG.

FIG. 7 is a perspective view showing another embodiment of the insulating section of FIG. 5; FIG.

FIG. 8 is a perspective view showing an embodiment of the collector portion of FIG. 5; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a solar collector and a method of manufacturing the same according to the present invention will be described with reference to the accompanying drawings. Hereinafter, specific embodiments of the present invention will be described with reference to drawings and embodiments, which are merely used to facilitate understanding of the present invention. Also, in the following embodiments, certain components may be shown or described exaggeratedly or reduced for convenience of explanation, but this is also intended to assist in understanding the present invention. Accordingly, the present invention is not limited to the embodiments described below or illustrated in the drawings, and various changes and modifications may be made thereto by those skilled in the art. Is a category of the present invention.

Hereinafter, a preferred embodiment of the solar collector according to the present invention will be described with reference to FIG. Since the present embodiment is an invention relating to the heat retaining portion and the heat collecting portion in the heat collector, the heat retaining portion and the heat collecting portion will be described in the following embodiments, and description of other portions of the heat collector will be omitted.

The solar collector according to the present embodiment also includes a collecting part 21 and a warming part 22 similar to a conventional non-reciprocating solar collector. The heat collecting portion 21 houses a heat collecting medium therein, and the heat retaining portion 22 accommodates a warming gas therein. Since the solar collector according to the present embodiment is non-fixed, it is preferable that the heat retaining portion and the heat collecting portion are made of a flexible material so that they can be installed and disassembled.

First, the warming unit 22 will be described in detail.

It is preferable that the heat preservation portion 22 has light permeability so that sunlight can be transmitted and has flexibility so that it can be inflated by a warming gas. For this purpose, in the conventional non-solid type collector, it is proposed to manufacture the warming unit by using a vinyl resin or rubber. However, as a result of research conducted by the inventor of the present invention, the use of only vinyl-based resin or rubber at the time of manufacturing the warming portion has been problematic in terms of production, durability, and the like.

In the case of using only vinyl-based resin, light permeability is satisfactory, but there is a problem in fabrication and durability. In addition, the durability is satisfactory for making the warming portion using rubber, but it is difficult to manufacture and there is a problem in light transmittance and the like. Particularly, as can be seen from Fig. 4, in the case of using a vinyl-based resin, when a specific portion of the heat insulating portion is damaged, a peeling phenomenon that the paper is torn as a whole is generated. Especially, in the non-solid solar collector, the warming part is repeatedly installed and dismantled, and this phenomenon is intensified.

In addition, the thermostat has to have a specific shape, for example a long cylindrical shape, in order to confine the insulated gas therein, and therefore a specific portion of the vinyl-based resin material must be bonded. However, when a durable material is used to solve the above-described peeling problem, bonding (adhesion) is not easy.

However, as a result of research conducted by the inventors of the present invention, by using a plastic film having different physical properties, the durability of the warming portion, the ease of manufacture, and the like can be achieved at the same time. That is, the warming unit 22 according to the present embodiment mainly comprises a first member 224 selected from the viewpoint of durability and a second member 222 mainly selected from the viewpoint of thermal adhesiveness. Of course, the first member 224 and the second member 222 should have light transparency and flexibility.

Here, the thermal adhesiveness refers to a property that when a pressure is applied at a predetermined temperature in a state that they are in contact with each other without any additional adhesive, they are bonded to each other. As a result of the study, even if the first member 224 alone does not satisfy the durability, the first member 224 and the second member 222, which is a material having heat adhesiveness, Satisfaction. That is, when the second member 222 is selected from the viewpoint of heat adhesion, not from the durability side, both the durability and the manufacturing convenience are satisfied at the same time by the combination of the first member 224 and the second member 222.

The warming portion 22 should be made in a predetermined shape, preferably a cylindrical shape, and therefore, a predetermined portion of the warming portion 22 must be joined thereto. However, if an adhesive or the like is used for a predetermined portion of the warming portion 22, the manufacturing process is complicated and causes a rise in cost. However, if the second member 222 is made of a thermally adhesive material, the second member 222 is bonded to each other when pressure is applied at a predetermined temperature in a state in which the second member 222 is in contact with each other.

As described above, the first member 224 of the warming portion 22 is mainly selected from the viewpoint of durability. The durability will be described in detail as follows. Inside the warming portion 22, a warming gas, for example, air is received, and the air is expanded by solar heat. Therefore, the warming portion 22 also expands outwardly. Therefore, the heat retaining portion 22 is mainly subjected to a tensile force and is stretched outward. Therefore, the durability of the first member 224 should be considered particularly in terms of tensile strength and elongation. That is, the first member 224 is preferably made of a material having a large tensile strength and a small elongation. In addition, the first member 224 must have heat resistance so as not to be melted by solar heat. Of course, the first member 224 should have light transmittance to transmit sunlight, and have a predetermined strength and flexibility so as not to be damaged at the time of installing and separating the warming portion 22.

Therefore, in summary, it is preferable that the first member 224 is made of a material preferable in terms of light transmittance, elongation, tensile strength, heat resistance, strength and flexibility. Although the first member 224 can be made of any material as long as this property is satisfied, it is preferable to use a relatively inexpensive and easy-to-obtain plastic film such as a PET film (Polyethylene Terephthalate Film).

On the other hand, the second member 222 of the warming section 22 is mainly selected from the viewpoint of thermal adhesiveness. It is preferable to use a plastic film similar to the first member 224 although it is possible to use any material as long as the second member 222 satisfies thermal adhesiveness. This is because the use of members of the same kind is advantageous to mutual bonding. As the second member 222, for example, a PP film (Polypropylene Film), a PE film (Polyethylene Film) or the like is preferably used. Since the melting temperature of the PET film is about 230 degrees, it is possible to thermally adhere the PP film to each other without melting the PET film by applying the temperature of 130-160 degrees, which is the melting point of the selected PP in terms of heat adhesion .

It is also possible to heat the warming body to about 130 degrees in the warming section 22 using the PET film and the PP film. On the other hand, since the softening temperature of the PE film is about 80 degrees, when the PE film is used, it is possible to heat the warming gas to about 80 degrees. As a result of the experiment, when the length of the warming unit 22 was 50 m and the diameter was 0.6 m, the temperature inside the warming unit 22 rose to about 70-80 degrees. Therefore, it is possible to use a PE film or a PP film.

On the other hand, the reflector 230 is provided at a predetermined position of the warming unit 22, for example, in the left half. The reflective portion 230 is positioned between the first member 224 and the second member 222. The reflective portion 230 may be formed by painting, coating, laminating, adhering, or depositing a reflective material on the first member 224 or the second member 222, preferably the first member 224. Preferably, the aluminum foil is used as the reflecting portion 230 and the aluminum foil is placed between the first member 224 and the second member 222, The two members 222 can be joined by an adhesive.

A material having good air barrier properties is disposed between the first member 224 and the second member 222 and between the first member 224 and the first member 224 so that the heated air inside the warming section 22 can not leak to the outside, And between the reflective portion 230 and the second member 222. [0159] As shown in FIG. For example, a nylon film can be used. Since nylon has high tensile strength and impact resistance, it is also helpful in terms of durability of the warming section 22. [

A manufacturing method of the warm keeping unit 22 will be described with reference to FIG. A PET film, a PP film, and an aluminum thin film are used as the first member 224, the second member 222, and the reflection portion 230, respectively, and a cylindrical heat preservation portion is made as an example.

An adhesive is applied to a predetermined portion of the PET film 224, for example, about half the size of the PET film, and then the aluminum thin film 230 is placed thereon. And approximately half is the aluminum foil 230 and approximately half is the adhesive applied over the surface of the PET film 224. The PP film 222 is laminated on the surface of which the aluminum film 230 is approximately half the surface of the PET film 224, and the pressure is applied to the surfaces of the PP film 222 (lamination bonding step).

Next, in order to make the heat preservation portion 22 substantially cylindrical, a heat preservation portion 22a (hereinafter, referred to as a 'laminated warm preservation portion') in which the PET film 224, the aluminum thin film 230, ) To round. At this time, the side (edge) 222a of the laminated thermal insulating portion 22a is bent outward in a cylindrical shape so that the PP films of the side portions 222a are brought into contact with each other (predetermined shape forming step). In this state, heat is applied to both side portions 222a of the PP film 222 and a predetermined pressure is applied. Then, both side portions 222a of the PP film 222 are thermally adhesive materials, so they are bonded to each other without an adhesive (heat bonding step). When the thermal bonding is completed, a cylindrical warm keeping part is finally made.

On the other hand, a predetermined portion of the first member 224 of the heat preservation portion 22, for example, a portion where the reflective portion 230 is provided may be colored black. This is because the amount of sunlight is not so great, but scattered light incident on the reflecting portion 230 is absorbed into the inside of the warming portion 22 without being reflected by the reflecting portion 230.

7, another embodiment of the warming unit 22 according to the present invention will be described.

This embodiment is substantially the same as the above-described embodiment. However, in the above-described embodiment, a cylindrical warm keeping unit was finally manufactured by using one laminated warm keeping unit. Incidentally, in this embodiment, a cylindrical warm keeping unit is manufactured by using a pair of the

laminate warming units

220L and 220R. That is, the warm keeping unit 22 is finally made using the laminated warm keeping unit 220L having the reflecting unit 230 and the laminated warm keeping unit 220R having no reflecting unit. Side portions 224La and 224Ra of the laminated thermal insulating

portions

220L and 220R are bent outward in a cylindrical shape and thermally adhered to each other so that the side portions 224La and 224Ra of the PP film are in contact with each other. Therefore, in the above-described embodiment, there is only one heat-bonding portion, but in this embodiment, there are two heat-bonding portions.

In the above-described embodiment, since the cylindrical warm keeping part 22 is manufactured by using a single laminated warm keeping part, there is an advantage that the warm keeping part 22 is stably installed on the flat surface because there is no bent part at the bottom, Because it needs to deal with a wide range of materials, manufacturability is poor. In this embodiment, since the cylindrical warm keeping unit 22 is manufactured by using a pair of laminated warm keeping units, the manufacturing process is improved by using a material having a relatively small width in the manufacturing process.

5 and 8, a preferred embodiment of the heat collecting portion 21 according to the present invention will be described.

Basically, the collecting portion 21 also has a structure and a manufacturing method similar to the above-described preserving portion 22. However, there is no reflecting portion in the heat collecting portion 21, unlike the warming portion 22.

The structure of the heat collecting portion 21 will be described. The heat collecting part 21 includes a third member 214 made of a material having durability, heat resistance and printability, a fourth member laminated to the third member 214 and made of a material having heat adhesion property 212).

The durability and heat resistance of the heat collecting portion 21 is similar to the durability and heat resistance of the above-described warming portion 22, and thus a detailed description thereof will be omitted. However, it is preferable to use a material having excellent printability in addition to the durability and heat resistance that the heat retaining portion 22 should have. This is because the heat collecting part 22 is a part that ultimately absorbs solar heat, so it is preferable that the heat collecting part 22 is black so as to absorb solar heat well. For this purpose, a black member may be used in addition to the third member 214 and the fourth member 212 constituting the heat collecting portion 21. However, rather than using a separate black member, it is convenient to manufacture the third member 214 in black, for example, in black. Therefore, it is preferable that the third member 214 color the third member 214 black, preferably black, using a material having further printability.

As described above, it is preferable that the third member 214 is selected from materials in terms of flexibility, durability, and printability. Similar to the first member 224 of the warming section 22, the durability of the third member 214 of the heat collecting section 21 is elongation, tensile strength, heat resistance, strength, and the like. It is preferable that the third member 214 of the heat collecting part 21 has printability rather than light permeability unlike the first member 224 of the warming part 22. [ Although it is possible to use any material as long as the third member 214 satisfies this property, it is preferable to use a plastic film, such as a PET film, in the same manner as the first member 224 of the warming portion 22. PET film is light-permeable, but it is easy to color PET film in black because it is good in printing suitability.

The fourth member 212 of the heat collecting portion 21 is mainly selected from the viewpoint of heat adhesion. It is preferable to use a plastic film similar to the second member 222 of the heat preservation portion 22 although any material can be used if the fourth member 214 satisfies the thermal adhesiveness. As the fourth member 212 of the heat collecting portion 21, for example, a PP film or a PE film is preferably used. The length of the heat collecting part 21 is equal to the length of the warming part 22 and the diameter of the heat collecting part 21 is half the diameter of the warming part 22, And the diameter was 30 cm, the temperature inside the heat collecting portion 21 rose to about 100 degrees. It is therefore preferable to use a PP film rather than a PE film.

As described above, the material of the first member 214 and the second member 212 of the warm keeping unit 21 and the material of the third member 224 and the fourth member 222 of the heat collecting unit 22 The heat preservation section 21 and the heat collecting section 22 can be manufactured in substantially the same manner. Therefore, it is easier to manufacture the heat keeping portion 21 and the heat collecting portion 22, and the manufacturing cost can be reduced.

A sixth member (not shown), for example, a nylon film having air barrier properties may be included between the third member 224 and the fourth member 222 of the heat collecting part 22. [

A manufacturing method of the heat collecting portion 22 will be described with reference to Fig.

The heat collecting portion 22 can also be manufactured in substantially the same manner as the warming portion 21. That is, the cylindrical heat collecting part 22 can be manufactured through the lamination bonding step, the predetermined shape forming step, and the heat bonding step. Since the method of manufacturing the heat collecting portion is substantially the same as the manufacturing method of the heat preserving portion except for the reflective film, a detailed description thereof will be omitted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. That is, the present invention is not limited to the above-described embodiments, and various modifications and changes may be made thereto by those skilled in the art to which the present invention belongs.

Claims

A flexible heat collecting part surrounding the heat collecting part and accommodating a warming gas therein; and a reflector provided in the heat retaining part to reflect sunlight to the collecting part, 1. A solar collector comprising:

The warming unit may include a first member made of a material having light permeability, durability, and heat resistance; And a second member laminated on the first member and made of a material having thermal adhesiveness, the reflective portion being located between the first member and the second member of the warming portion,

Wherein the heat collecting part comprises: a third member made of a material having durability, heat resistance and printability; And a fourth member laminated on the third member and made of a material having heat adhesion property.
2. The apparatus according to claim 1, wherein the first member and the second member of the heat retaining portion are in the form of a thin plate, both side portions of the second member are positioned facing each other, and both side portions of the second member are thermally adhered to each other, Wherein the warming unit has a predetermined shape.
[3] The apparatus according to claim 2, wherein the pair of the warming units are provided in a pair, one of the pair is provided with a reflecting unit, both side portions of the second member of the pair of warming units are positioned facing each other, And both side portions of the second member are thermally adhered to each other in a state of being in contact with each other, and the insulating portion has a predetermined shape.
The heat sink according to claim 2, wherein the third member and the fourth member of the heat collecting portion are in the form of a thin plate, both side portions of the fourth member are positioned facing each other, and both side portions of the fourth member are thermally bonded Wherein the heat collecting part has a predetermined shape.
The solar collector according to claim 3 or 4, wherein the first member, the second member, the third member, and the fourth member are plastic films.
The heat sink according to claim 5, wherein the first member of the heat insulating portion is a PET film, the second member is one of a PP film and a PE film, the reflecting portion is an aluminum foil, And the fourth member is made of the same material as the second member of the heat retaining portion.
The solar collector according to claim 6, wherein at least one of a portion of the first member of the heat preservation portion in contact with the reflective portion and a third member of the heat collection portion is a colored PET film.
The air conditioner according to claim 7, wherein a fifth member having an air barrier property is provided between the first member and the second member of the heat retaining portion, and an air barrier property is provided between the third member and the fourth member of the heat collecting portion And a sixth member made of a metal material.
The solar collector according to claim 8, wherein the fifth member of the heat retaining portion and the sixth member of the heat collecting portion are nylon films.
Placing a reflective portion between a first member made of a material having durability, heat resistance and printability and a second member made of a material having heat adhesion property, and the first member and the second member are laminated A first step of combining;

A second step of causing both side portions of the second member to be opposed to each other;

And a third step of thermally adhering the second member in a state where both side portions of the second member are in contact with each other to thereby form a warming portion having a predetermined shape.
[10] The method of claim 10, further comprising: a fourth step of laminating a third member made of a material having durability, heat resistance, and printability and a fourth member made of a material having thermal adhesiveness;

A fifth step of causing both side portions of the fourth member to be opposed to each other;

And a sixth step of making a heat collecting part having a predetermined shape by thermally adhering with both sides of the fourth member in contact with each other.
12. The method of claim 11, wherein the first member, the second member, the third member, and the fourth member are plastic films.
The method as claimed in claim 12, wherein the first member of the heat preservation portion is a PET film, the second member is one of a PP film and a PE film, the reflective portion is an aluminum thin film, And the fourth member is made of the same material as the second member of the heat retaining portion.
The method of manufacturing a solar collector according to claim 12, wherein at least one of a portion of the first member of the heat preservation portion in contact with the reflective portion and a third member of the heat collection portion is a colored PET film.
15. The air conditioner of claim 14, wherein a fifth member having an air barrier property is provided between the first member and the second member of the heat retaining portion, and an air barrier property is provided between the third member and the fourth member of the heat collecting portion And a sixth member made of a metal material.
The method of manufacturing a solar collector according to claim 15, wherein the fifth member of the heat retaining portion and the sixth member of the heat collecting portion are nylon films.