KR102154639B1 - Hybrid type collecting solar energy for hot water - Google Patents

Abstract

The present invention relates to a hybrid solar heat collecting device, wherein the positions of the first heat collector and the second heat collector are positioned at the top and bottom to facilitate the movement to the second heat collector using the principle of rising by the buoyancy of heated air. , It is possible to minimize energy loss, and increase heat collection efficiency by forming an insulating coating layer on the heat collecting plate in the first heat collector and the second heat collector.
In addition, it is to provide a hybrid solar heat collecting device capable of producing electric energy together by rotating a propeller by placing a small generator in a moving pipe using the point in which the air heated by the collector rises due to buoyancy.

Description

Hybrid type solar collector {HYBRID TYPE COLLECTING SOLAR ENERGY FOR HOT WATER}

The present invention relates to a hybrid solar heat collecting device, and more particularly, to a hybrid solar heat collecting device capable of producing hot water and electric energy using a small generator using air heat heated by solar heat.

Recently, environmental problems such as depletion of fossil energy, instability in energy supply and demand, and global warming due to greenhouse gas emission are urgently needed to develop clean and abundant renewable energy including solar energy.

In general, as a method of obtaining heat energy, combustible materials are burned or electricity, chemical reactions and reactions are used, and the heat energy obtained by the combustion, action and reaction is stored in a heat storage device or converted into a usable state. It is used as a means for cooling, heating or heating.

However, as described above, the method for obtaining heat energy requires preparing a combustible material that can be burned, and obtaining heat energy while burning the combustible material. In addition to the necessity of a device for burning the combustible material, We cannot help but worry about the harm caused by the generation of environmental pollutants, and in fact, environmental pollution caused by combustion of the combustible substances is reaching a serious state.

In addition, the method of obtaining heat energy by electrical or chemical action significantly reduces the generation of pollutants compared to the method of burning the combustible material, but the aforementioned electrical and chemical methods require materials or devices for these reactions. Therefore, when you want to obtain a large amount of heat energy, there is a disadvantage that the volume of the device becomes enormous, and the device for this has to be equipped with safety, and the device for this has a drawback that it becomes more massive than a device for obtaining heat energy. There is a problem in that there is a lot of difficulty in facility investment because there is not much heat obtained compared to the device.

In general, solar heat is an energy source with low energy density, but its remaining amount is infinite, and its usage cost is not at all, so it is attracting attention along with wind power as a new renewable energy source. It stands out as

In general, solar collectors are largely divided into flat plate type and vacuum tube type.Plate type solar collectors are usually formed in a rectangular plate shape, and absorb the sun's rays as much as possible by a thin metal plate made of copper or aluminum. While forming a heat collecting plate so that the heat collecting plate can be formed, a plurality of thin paper pipes of the same material are welded to one surface of the heat collecting plate at regular intervals, inserted into a rectangular frame, and covered with a transparent cover to form an integrated heat collecting device.

However, although such a conventional flat panel solar collector mainly uses a transparent cover on the top of the heat collecting tube, heat loss to the outside due to convection is largely generated during heat exchange of the heat medium, so that the heat collection efficiency is usually less than 50%. As it is low, there are a number of problems including functional problems such as limited use in the temperature range of 60 to 70°C or higher.

In order to solve the problem of such a flat-type solar heat collector, a vacuum tube-type solar heat collector that can block heat loss due to convection by vacuum processing the closed space in contact with the solar heat collecting surface, or by changing the shape of the heat collecting plate A number of technologies have been developed to ensure the collection performance.

However, many of the technologies that attempt to secure high-efficiency heat collection performance through structural transformation of such a flat-panel solar collector are difficult to secure high-efficiency heat collection performance compared to the theoretical approach when actually manufacturing a solar heat collector. When manufacturing a furnace, manufacturing costs are high, and thus, when using as a solar heat collector, there is a problem that is not suitable for use as a heating means in consideration of manufacturing cost.

(Patent Document 1) KR 10-2013-0083706 A1

It is an object of the present invention to provide a hybrid solar heat collecting device.

Another object of the present invention is to position the first and second collectors at the top and bottom to facilitate movement to the second collector by using the rising principle by the buoyancy of heated air, thereby minimizing energy loss. It is to provide a hybrid solar heat collecting device.

Another object of the present invention is to provide a hybrid solar heat collecting device capable of increasing heat collection efficiency by forming an insulating coating layer on a heat collecting plate in a first heat collector and a second heat collector.

Another object of the present invention is to provide a hybrid solar heat collecting device capable of producing electric energy together by rotating a propeller by placing a small generator in a moving pipe using a point in which the air heated by the collector rises due to buoyancy. .

In order to achieve the above object, a hybrid solar heat collecting device according to an embodiment of the present invention includes: a first heat collector configured to heat internal air by collecting solar heat; A first small generator positioned above the first collector and connected to a first moving pipe; A second collector connected to the first small generator and a second moving pipe, and collecting solar heat to heat internal air; A second small generator located above the second collector and connected to a third moving pipe; And a contraction heat tank connected to the second small generator and a fourth moving pipe to exchange heat with water by heated air heat, wherein the first and second heat collectors include a main body of a heat collector; A transmissive body formed on an uppermost end of one surface of the body to allow solar heat to pass through the body; A heat collecting plate formed to be spaced apart from the bottom of the transmission body and disposed horizontally to collect solar energy; And a heat insulating material formed inside the body.

The first moving pipe formed on the top of the first collector is connected to the first small generator, and the first small generator is connected to the lower part of the second collector by forming a second moving pipe, thereby facilitating the flow of heated air. In order to do so, the second collector is positioned on the top of the first collector.

The heat collecting plate may be formed by combining a plurality of copper plates or copper tubes.

The heat collecting plate is formed by combining a plurality of copper plates and copper tubes, and an insulating coating layer may be formed to increase heat collection efficiency.

The heat collecting coating layer is formed of an insulating coating composition, and the insulating coating composition includes ceramic particles having fine pores; And an organic binder, and may be selected from the group consisting of the ceramic stabilized zirconia (YSZ, Yttria stabilized zircornia), NiO-YSZ, LaMnO, and mixtures thereof.

The transmissive body is formed of a glass material, and the transmissive body may have a coating layer formed on the inner and outer surfaces thereof to increase light transmittance and increase reflectivity.

The heat insulator is attached to all of the other side of the heat collector body except for one side on which the permeable body is formed, and the heat insulator is a non-woven fabric or foamed synthetic resin.

A hybrid solar heat collecting system according to another embodiment of the present invention includes: a first heat collecting unit configured to heat internal air by collecting solar heat; A first small power generation unit positioned above the first heat collecting unit and connected to a first moving pipe; A second heat collecting part connected to the first small power generating part and a second moving pipe and collecting solar heat to heat internal air; A second small power generation unit positioned above the second heat collecting unit and connected to a third moving pipe; And a contraction heat tank part connected to the second small power generation part and a fourth moving pipe to exchange heat with water by heated air heat, wherein the first heat collecting part and the second heat collecting part include a main body part of the heat collecting part; A transmission body portion formed at the top of one surface of the body portion to allow solar heat to pass through the body; A heat collecting plate part formed to be spaced apart from the bottom of the transmission body and disposed horizontally to collect solar energy; And it may include a heat insulating material formed inside the body.

In the present invention, the first and second collectors are positioned at the top and bottom to facilitate movement to the second collector by using the rising principle by buoyancy of heated air, thereby minimizing energy loss, and Heat collection efficiency can be increased by forming an insulating coating layer on the heat collecting plate in the 1 heat collector and the second heat collector.

In addition, by using the point in which the air heated by the collector rises due to buoyancy, electric energy can be produced together by placing a small generator in the moving pipe and rotating the propeller.

1 is a diagram of a hybrid solar heat collecting device according to an embodiment of the present invention.
2 is a diagram of a hybrid solar heat collecting device according to an embodiment of the present invention.
3 is a diagram illustrating a cross section of a collector according to an embodiment of the present invention.
4 is a view of a small generator according to an embodiment of the present invention.

Hereinafter, with reference to the drawings of a vehicle filter according to an embodiment of the present invention will be described in detail. The following embodiments are provided as examples in order to sufficiently convey the idea of the present invention to ordinary practitioners. Accordingly, the present invention is not limited to the embodiments described below and may be embodied in other forms. In addition, in the drawings, the size and thickness of the device may be exaggerated for convenience. Throughout the specification, the same reference numbers indicate the same elements.

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 a variety of different forms, only the present embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention pertains. 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 elements throughout the specification. In the drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity of description.

The terms used in this specification are for describing exemplary embodiments, and therefore, 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, "comprise" and/or "comprising" refers to the presence of one or more other components, steps, actions and/or elements, and/or elements, steps, actions and/or elements mentioned. Or does not exclude additions.

1 is a diagram of a hybrid solar heat collecting device according to an embodiment of the present invention. More specifically, as a hybrid solar heat collecting device according to an embodiment of the present invention, a first heat collector 100, a second heat collector 200, a contraction heat tank 300, a first small generator 400, a second It includes a small generator 410 and moving pipes (510, 520, 530, 540, 550).

Referring to FIG. 1, the first and second collectors 100 and 200 are located at the upper and lower sides, and when heated air is moved by buoyancy, energy loss can be prevented.

That is, air is heated by the first heat collector 100, and the heated air rises due to buoyancy. At this time, in order to move the rising air without energy loss, the first moving pipe 510 and the second moving pipe 520 are moved to the second collector 200 located at the top, compared to the first collector 100. .

At this time, the first moving pipe 510 and the second moving pipe 520 are configured to pass through the first small generator 400 and configured to rotate the propeller 410 in the small generator by the flow of hot air, Electricity may be generated by rotation of the propeller 410.

The high-temperature air that has passed through the first small generator 400 passes through the second moving pipe 520 and moves to the second collector 200, and the air is secondarily heated in the second collector 200 by solar heat. Thus, the air that is first heated by the first heat collector 100 may be secondarily heated, thereby generating higher temperature air.

The air heated by the second heat collecting pipe 200 moves to the second small generator 410 through the third moving pipe, and at this time, the second small generator 410 is located at the upper end of the second heat collecting pipe 200 Thus, by minimizing energy loss due to the movement of heated air due to buoyancy, electricity may be generated by rotating the propeller in the second small generator 410.

The high-temperature air that has passed through the second small generator 410 moves to the contraction heat tank 300 through the fourth moving pipe 540 and exchanges heat with water inside the tank to produce hot water.

Air used for the manufacture of hot water is converted into low temperature air again by heat exchange with water inside the tank, and the low temperature air is moved to the first heat collector 100 again by the fifth moving pipe 550.

As in the above embodiment, hot water can also be generated in the contraction heat tank 300 by one cycle, and electricity is generated by rotating the propeller 410 in the first small generator 400 and the second small generator 410. It also makes it possible to create.

That is, if the conventional solar heat collecting device was used only for generating hot water simply by using air heated by solar heat, the present invention locates the small generators 400 and 410 to generate hot water, as well as the small generator 400, 410) can also be used to generate electricity.

Unlike the conventional solar heat collecting device, the solar heat collecting device according to the embodiment of the present invention is composed of a first heat collecting device 100 and a second heat collecting device 200, and the first heat collecting device 100 and the second heat collecting device 200 ) Position at the top and bottom, it is possible to minimize the energy loss of heated air.

That is, as shown in FIG. 2, the results of comparing the efficiency of hot water generation and electricity generation by placing the positions of the first heat collector 100' and the second heat collector 200' side by side and circulating air in the same way. , It was confirmed that the difference in the efficiency of hot water generation and electricity generation occurs from a maximum of 20% to a minimum of 10% depending on the energy loss of the heated air.

3 is a cross-sectional view of a collector according to an embodiment of the present invention, wherein the first collector 100 and the second collector 200 include a main body 110, a transmission body 120, a heat collecting plate 130, and a heat insulating material. Includes 140.

More specifically, the main body 110 of the collector; A transmission body 120 formed on an uppermost end of one surface of the body to allow solar heat to be transmitted into the body; A heat collecting plate 130 formed to be spaced apart from the bottom of the transmission body and disposed horizontally to collect solar energy; And an insulating material 140 formed inside the body.

The heat collecting plate 130 is formed by combining a plurality of copper plates or copper tubes, and an insulating coating layer is formed in order to increase heat collection efficiency.

Compared to the heat collecting plate 130 in which a plurality of copper plates and copper tubes are simply combined, when the heat insulating coating layer is formed, it will be said to be more effective in increasing the temperature of the air inside the collector.

In other words, when the copper plate and the copper tube are heated by solar heat and the air inside is heated by radiant heat generated in a heated state, when the heat insulating coating layer is formed, the generation of radiant heat becomes easier, and the temperature of the internal air is increased. It would be more effective.

The heat collecting coating layer is formed of an insulating coating composition, and the insulating coating composition includes ceramic particles having fine pores; And an organic binder, wherein the ceramic particles are selected from the group consisting of stabilized zirconia (YSZ, Yttria stabilized zircornia), NiO-YSZ, LaMnO, and mixtures thereof.

Preferably, the ceramic particles are stabilized zirconia (YSZ, Yttria stabilized zircornia), and the heat insulating coating composition includes stabilized zirconia and carbon fibers. Compared to the case of forming the heat insulating coating composition including only ceramic particles as described above, when the carbon fiber is included, radiation heat is easily generated due to the solar heat absorption effect by the carbon fiber, and the effect of increasing the temperature of the internal air is further increased. Is done.

The carbon fibers are Rayon based carbon fiber, PAN based carbon fiber, pitch based carbon fiber, and gas phase grown carbon fiber on Vapor grown. carbon fiber), but is not limited to any one or more selected from the group consisting of.

The organic binder is a mixture of a polymer resin and a solvent, and the polymer resin is at least one selected from the group consisting of acrylic resin, epoxy resin, urethane resin, and vinyl ester (VE, vinyl ester) resin, but preferably high rigidity As an acrylic resin of, it includes a polymer resin represented by the following Formula 1 and Formula 2:

[Formula 1]

[Formula 2]

The solvent is water or an organic solvent, and more specifically water, n-hexane, n-hexanol, xylene, n-octane, n-butanol, carbon tetrachloride, cyclohexanone, benzene, n-butanol, ethanol, Any one or more selected from the group consisting of methanol, dimethylformaldehyde, acetone, toluene and dioxane may be used, but the present invention is not limited thereto.

As described above, an organic binder was prepared by mixing n-hexane as a solvent with a polymer resin represented by Formulas 1 and 2, and stabilized zirconia (YSZ, Yttria stabilized zircornia) and PAN-based carbon fiber were added to the organic binder. fiber) can be mixed to prepare an insulating coating composition.

Preferably, the heat insulating coating composition is 100 parts by weight of a solvent, 40 to 60 parts by weight of a polymer resin represented by Formula 1, 40 to 60 parts by weight of a polymer resin represented by Formula 2, and stabilized zirconia (YSZ, Yttria stabilized zircornia) 20 To 40 parts by weight and 5 to 10 parts by weight of PAN-based carbon fiber.

Within the above range, the adhesion of the heat collecting plate 130 in which a plurality of copper plates and copper tubes are combined is high, and the heat insulating effect is excellent, so that a difference in the temperature increase effect of the internal air occurs compared to the heat collecting plate without the heat insulating coating layer.

The transmissive body 120 is formed of a glass material, and the transmissive body 120 may have a coating layer formed on inner and outer surfaces to increase light transmittance and increase reflectance.

The coating layer is a glass material, and a coating composition that a person skilled in the art can use to increase light transmittance and reflectance may be used without limitation.

The heat insulator 140 is attached to all surfaces of the heat collector body except for one surface on which the permeable body is formed, and the heat insulator 140 is a nonwoven fabric or foamed synthetic resin.

The heat insulator 140 is to prevent heat from leaking to the outside when the internal temperature increases due to solar heat, and all surfaces of the body 110 except for the surface on which the transmission body 120 through which solar heat is transmitted is formed. It is formed in, can increase the heat insulation effect.

A hybrid solar heat collecting system according to another embodiment of the present invention includes: a first heat collecting unit configured to heat internal air by collecting solar heat; A first small power generation unit positioned above the first heat collecting unit and connected to a first moving pipe; A second heat collecting part connected to the first small power generating part and a second moving pipe and collecting solar heat to heat internal air; A second small power generation unit positioned above the second heat collecting unit and connected to a third moving pipe; And a contraction heat tank part connected to the second small power generation part and a fourth moving pipe to exchange heat with water by heated air heat, wherein the first heat collecting part and the second heat collecting part include a main body part of the heat collecting part; A transmission body portion formed at the top of one surface of the body portion to allow solar heat to pass through the body; A heat collecting plate part formed to be spaced apart from the bottom of the transmission body and disposed horizontally to collect solar energy; And it may include a heat insulating material formed inside the body.

Manufacturing example

Manufacturing of pneumatic collector

An organic binder was prepared by mixing n-hexane as a solvent with a polymer resin represented by the following Formulas 1 and 2, and stabilized zirconia (YSZ, Yttria stabilized zircornia) and PAN based carbon fiber were added to the organic binder. Mixing to prepare an insulating coating composition:

[Formula 1]

[Formula 2]

After the main body of the collector was manufactured, and a transmission body was manufactured using tempered glass on one side, an insulating material was formed using a foamed synthetic resin inside. Thereafter, a heat collecting plate was prepared by forming a 0.5 to 1 mm heat insulating coating layer on the copper plate using the heat insulating coating composition, and then attached to the heat collector body to manufacture a heat collector.

Specific contents of the heat insulating coating composition are shown in Table 1 below.

DC1 DC2 DC3 DC4 menstruum 100 100 100 100 Formula 1 30 40 60 70 Formula 2 30 40 60 70 Zirconia 10 20 40 50 Carbon fiber One 5 10 15

(Unit weight part)

Experimental example

Experiment on the effect of increasing the internal air temperature

In order to test the effect of increasing the temperature on the heat collector, a heat collector coated with a heat collecting plate with a coating composition of DC 1 to DC4 was installed on the roof of the building from August 6 to August 9, 2018, and at 9:00 a.m. The air temperature was measured, and the internal temperature was measured at 4 pm, and the temperature change of the internal air was tested. On the date of the experiment, the maximum temperature was 34℃ and the minimum was 32℃.

The experimental results are shown in Table 2 below, and the degree of temperature rise by subtracting the temperature measured at 9 am from the temperature measured at 4 pm was measured, and the average value of the temperature change for 4 days was recorded.

August 6 Aug 7 August 8 Aug 9 DC1 45℃ 44℃ 46℃ 46℃ DC2 70℃ 69℃ 71℃ 68℃ DC3 68℃ 72℃ 70℃ 71℃ DC4 48℃ 52℃ 49℃ 50℃

(Measure the degree of temperature change)

According to Table 2, in the case of DC1 and DC4, it was confirmed that the temperature of the internal air was increased in the afternoon compared to the morning (9 am), but it was confirmed that the degree of temperature increase was insufficient compared to DC2 and DC3.

In view of these circumstances, compared to DC1 and DC4, when the heat collecting plate is coated by using the coating composition of DC2 and DC3, the effect of increasing the temperature of the heat collector will be maximized.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention defined in the following claims are also present. It belongs to the scope of rights of

100: first collector
110: collector body
120: transmission
130: collecting plate
140: insulation
200: second collector
300: shrink heat tank
400: first small generator
410: second small generator
510: first moving pipe
520: second moving tube
530: 3rd moving tube
540: fourth moving tube
550: 5th moving pipe

Claims (8)

A first collector to heat the internal air by collecting solar heat;
A first small generator positioned above the first collector and connected to a first moving pipe;
A second collector connected to the first small generator and a second moving pipe, and collecting solar heat to heat internal air;
A second small generator located above the second collector and connected to a third moving pipe; And
The second small-sized generator and the fourth moving pipe includes a heat shrinkage tank for heat exchange with water by the heated air heat,
The first and second collectors include a main body of a collector;
A transmissive body formed on an uppermost end of one surface of the body to allow solar heat to pass through the body;
A heat collecting plate formed to be spaced apart from the bottom of the transmission body and disposed horizontally to collect solar energy; And
Including a heat insulating material formed inside the body,
The heat collecting plate is formed by combining a plurality of copper plates and copper tubes,
In order to increase heat collection efficiency, an insulating coating layer is formed,
The heat insulating coating layer is formed of a heat insulating coating composition,
The insulating coating composition comprises a solvent, a polymer resin represented by Formula 1, a polymer resin represented by Formula 2, stabilized zirconia (YSZ, Yttria stabilized zircornia), and PAN based carbon fiber.
Hybrid Solar Collector:
[Formula 1]

[Formula 2]

The method of claim 1,
The first moving pipe formed on the top of the first collector is connected to the first small generator,
The first small generator is connected to the lower portion of the second collector is formed with a second moving tube,
In order to facilitate the flow of heated air, a second collector is placed on top of the first collector.
Hybrid solar collector. The method of claim 1,
The heat collecting plate is formed by combining a plurality of copper plates or copper tubes
Hybrid solar collector. delete delete The method of claim 1,
The transmission body is formed of a glass material,
The transmissive body has a coating layer formed on the inner side and the outer side to increase light transmittance and increase reflectance.
Hybrid solar collector. The method of claim 1,
The insulating material is attached to all of the other surfaces except for the one surface of the heat collector body on which the transmission body is formed,
The insulating material is non-woven fabric or foamed synthetic resin
Hybrid solar collector. A first heat collecting unit that heats the internal air by collecting solar heat;
A first small power generation unit positioned above the first heat collecting unit and connected to a first moving pipe;
A second heat collecting part connected to the first small power generating part and a second moving pipe and collecting solar heat to heat internal air;
A second small power generation unit positioned above the second heat collecting unit and connected to a third moving pipe; And
It includes a shrinkage heat tank for heat exchange with water by the heat of air connected to the second small power generation unit and the fourth moving pipe,
The first heat collecting part and the second heat collecting part may include a main body of the heat collecting part;
A transmission body portion formed at the top of one surface of the body portion to allow solar heat to pass through the body;
A heat collecting plate part formed to be spaced apart from the bottom of the transmission body and disposed horizontally to collect solar energy; And
Including a heat insulating material portion formed inside the body,
The heat collecting plate part is formed by combining a plurality of copper plates and copper tubes,
In order to increase heat collection efficiency, an insulating coating layer is formed,
The heat insulating coating layer is formed of a heat insulating coating composition,
The insulating coating composition comprises a solvent, a polymer resin represented by Formula 1, a polymer resin represented by Formula 2, stabilized zirconia (YSZ, Yttria stabilized zircornia), and PAN based carbon fiber.
Hybrid solar collection system:
[Formula 1]

[Formula 2]

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