KR101056911B1 - Dish Solar Collector - Google Patents

Abstract

The present invention provides a dish-shaped reflector for condensing sunlight, a heat collecting module for collecting the sunlight reflected from the reflector and using it as a heat source for the reactor of the reformer, shading means for adjusting the condensing area of the reflector, and the reactor. It provides a dish-type solar heat collecting device comprising a control unit for causing the shading means to adjust the light collecting area of the reflecting plate to maintain the operating temperature in the set temperature range.

Therefore, since the light collecting area of the dish-shaped reflector can be adjusted by the shading means, the operating temperature of the reactor of the reformer can be maintained within the optimum temperature range. From this, the burning phenomenon generated in the reactor of the reformer is reduced, and the production of carbide is also suppressed.

Description

Dish-type solar collector {Dish-type solar collector}

The present invention relates to a dish-type solar heat collecting device, and more particularly to a dish-type solar heat collecting device that can control the amount of heat collected.

In general, solar energy, along with wind and hydropower, serves as a useful alternative to fossil raw materials that are at risk of depletion into an endless energy source of clean nature. In particular, solar energy is easier to use than other energy sources, and due to the usefulness of obtaining abundant energy with high efficiency, various natural friendly products using solar energy have recently appeared one after another. Among them, it is being developed into a technology that collects solar heat and converts it into electrical energy or utilized as a heat source for hot water and heating.

The solar heat collecting device forms a heat collecting plate to a certain standard, forms a conduit through which the fluid is circulated by the heat collecting plate, and heats the fluid by radiant heat of the sun. In general, solar light concentrators include Parabolic Trough Concentrator (PTC), Compound Parabolic Concentrator (CPC), Parabolic Dish (Parabolic Dish), and the like, according to a condensing geometry. The parabolic dish collecting device is a device that can obtain a high temperature due to a high condensing ratio in a two-axis (azimuth, altitude) method that accurately tracks the position of the sun, and can generate power by using the high temperature. The condenser of the parabolic dish-type light collecting device has a parabolic shape formed by rotating the one-dimensional parabolic 360 °, and the sunlight incident on the parabolic surface reflects the sunlight to the focal point of the parabolic surface. Compared to the large parabolic area, the area of the focal area where the reflected light is collected is small, and thus the light collecting ratio is very large and heat loss is smaller than that of other heat collecting devices. In addition, since the plate-type solar heat collecting device is very small compared to other light collecting devices, it is possible to solve the problem of selecting the installation site.

However, when the reactor of the reformer provided in the fuel cell is heated by using a plate-type collector, the operating temperature of the reactor can only be changed according to the amount of heat collected by the plate-type collector, so that the operating temperature of the reactor is increased. It is difficult to maintain the optimum temperature. Therefore, a burning phenomenon (or caulking phenomenon) occurs inside the reactor, and there is a problem that carbide is produced.

An object of the present invention is to provide a dish-type solar heat collecting device that can control the amount of heat collected.

The present invention provides a dish-shaped reflector for condensing sunlight, a heat collecting module that collects sunlight reflected from the reflector and uses it as a heat source for the reactor of the reformer, shading means for adjusting the condensing area of the reflector, and the reactor. It provides a dish-type solar heat collecting device comprising a control unit for causing the shading means to adjust the light collecting area of the reflecting plate to maintain the operating temperature in the set temperature range.

In the present invention, the reflecting plate may include a plurality of reflecting mirrors spaced apart in the circumferential direction. The sunshade means includes sunshade films provided on the plurality of reflectors, respectively, and a driver for adjusting the area in which the sunshade films cover the reflectors. In this case, the driving unit may roll up or spread the sunscreens in a roll blind manner. However, the driving unit may fold or unfold the sunscreens in a bellows manner.

According to another aspect of the present invention, the present invention, a plate-shaped reflector for condensing sunlight, and a heat collecting module for collecting the light reflected from the reflecting plate to use as a heat source of the reactor of the reformer, and the solar incident to the collecting module It provides a dish-type solar heat collecting device comprising a shading means for adjusting the incident area of the light, and a control unit for causing the shading means to adjust the incident area of the heat collecting module to maintain the operating temperature of the reactor in a set temperature range. .

In the dish-type solar heat collecting apparatus according to the present invention, since the light collecting area of the dish-shaped reflector can be adjusted by the shading means, the operating temperature of the reactor of the reformer can be maintained within the optimum temperature range. Therefore, the burning phenomenon generated in the reactor of the reformer is reduced, and the production of carbide is also suppressed.

1 to 3 illustrate a dish-type solar heat collecting apparatus 100 according to an embodiment of the present invention. 1 is a schematic perspective view of the dish-type solar collector 100, and FIG. 2 is a block diagram showing the control flow of the dish-type solar collector 100.

1 and 2, the dish-type solar heat collecting device 100 includes a dish-shaped reflecting plate 110, a collecting module 120, a shading means 130, a control unit 140, and a memory unit 150. Include. The dish reflector 110 is a dish type and performs a function of condensing sunlight. The dish-shaped reflector 110 includes a frame 111 having a dish structure and a plurality of reflectors 112 spaced apart along the circumferential direction of the frame 111. The dish-shaped reflector 110 is provided with a driving means (not shown) to track the sun.

The heat collecting module 120 is fixed to the auxiliary frame 125 rotatably coupled to the frame 111. The collecting module 120 includes a reactor of a reformer therein, and uses heat collected from the dish-shaped reflector 110 as a heat source of the reactor of the reformer. However, the present invention is not limited thereto, and the reactor of the reformer may have a separate configuration from the heat collecting module 120. At this time, the collecting module 120 has a function of supplying the collected heat to the reactor of the reformer.

The reactor of the reformer generates hydrogen gas using methane gas and carbon dioxide gas. At this time, thermal energy is required for generation of the hydrogen gas. The reactor of the reformer uses solar heat collected as the thermal energy. In this embodiment, although methane gas and carbon dioxide gas are used as the feed gas of the reactor, the present invention is not limited thereto, and various feed gases may be used. That is, steam gas may be used instead of carbon dioxide gas as the feed gas of the reactor, and methanol or ethanol may be used instead of the methane gas.

The shading means 130 performs a function of adjusting the light collecting area of the reflecting plate 110. FIG. 3 is a schematic partial cross-sectional view showing a state in which the shading means 130 is installed in the dish-shaped reflecting plate 110. The shading means 110 includes shading films 135 and a driver 139. The sunshade films 135 are provided on the reflectors 112, respectively. The driving unit 139 independently controls each of the shade films 135. The driving unit 139 may include a driving motor (not shown) installed at an outer portion of each reflector 112 and a roll unit rotating or spreading the sunscreen 112 in a roll blind manner by rotating by the driving motor (not shown). 131, guide parts 132 installed along both sides of the awning film 112, and the awning film 135 while being fixed to an end of the awning film 135 and both ends thereof move along the guide parts 132. ) Includes a guide member 133 for advancing or reversing. The guide member 133 may include a hollow first link (not shown), a second link inserted into the first link (not shown), and an inner end portion of the first link and the second link. And a spring member (not shown) disposed between the outer ends of the links to stretch the length of the guide member 133. By the structure as described above, when the driving motor (not shown) is rotated forward, the sunshade film 135 is unfolded, and when the drive motor (not shown) is rotated reversely, the sunshade film 135 is rolled.

The shading means 130 may have various structures. 4 is a schematic partial plan view showing a state in which the shading means 230 according to the modification is installed in the dish-shaped reflecting plate 210. Referring to FIG. 4, the shading means 230 includes a shading film 235 and a driver 239. The driving part 239 is guide parts 232 installed along both sides of the awning film 235, and the awning film is fixed to an end of the awning film 235 and both ends thereof move along the guide parts 232. And a guide member 233 for advancing or reversing 235 and a cylinder portion 234 for advancing or reversing the guide member 233. By the structure as described above, when the cylinder portion 234 pushes the guide member 233, the sunshade membrane 235 is unfolded, and when the cylinder portion 234 pulls the guide member 233, the sunshade membrane 235 ) Is folded in a Javascript way. In this modification, the cylinder portion 234 has a simple forward and backward structure, but the cylinder portion 234 may have a robot arm structure using a link mechanism.

Referring again to FIGS. 1 and 2, the controller 140 controls the driving unit 139 to maintain an operating temperature of the reactor of the reformer in a set temperature range. The operating temperature of the reactor of the reformer is 870 to 1400 ℃, this information is stored in the memory unit 150. When the operating temperature of the reactor of the reformer is 870 ° C. or less, the control unit 140 increases the light collecting area of the reflector 110 by causing the driving unit 139 to roll the shade films 135. However, when the operating temperature of the reactor of the reformer is 1400 ° C. or more, the control unit 140 causes the driving unit 139 to spread the shading films 135 to reduce the light collecting area of the reflecting plate 110.

As described above, since the light collecting area of the reflector 110 may be adjusted, the operating temperature of the reactor of the reformer may be maintained within an optimum temperature range. From this, the burning phenomenon generated in the reactor of the reformer is reduced, and the production of carbide is also suppressed.

5 is a schematic configuration diagram of a dish-type solar heat collecting device 300 according to another embodiment of the present invention. Referring to FIG. 5, the dish type solar heat collecting device 300 includes a dish type reflecting plate 310, a collecting module 320, a shading means 330, a controller (not shown), and a memory unit (not shown). do.

The dish reflection plate 310 focuses sunlight. The heat collecting module 320 collects sunlight reflected from the reflecting plate 310 and uses the heat source of the reactor of the reformer provided in the heat collecting module 320. The shading means 330 adjusts an incident area of sunlight incident on the heat collecting module 320. The sunshade means 330 may move to the sunshade 335 and the sunshade 335 disposed on a portion where the sunlight is received from the heat collecting module 320, and cover or open the portion where the sun is received. The driver 339 is included.

The memory unit (not shown) stores the operation set temperature of the reactor of the reformer, the control unit (not shown) controls the drive unit 339 so that the operating temperature of the reactor of the reformer maintains the set temperature range. do. That is, when the operating temperature of the reactor of the reformer is below the set temperature, the controller (not shown) operates the drive unit 339 to move the sunscreen 335 to further open the portion where the sunlight is received. When the operating temperature of the reactor of the reformer is greater than or equal to the set temperature, the driving unit 339 is operated to move the sunscreen 335 to further cover a portion where the sunlight is received.

As described above, in the present embodiment by controlling the solar light incident area of the heat collecting module 320 is relatively small compared to the dish-shaped reflector 310, to maintain the operating temperature of the reactor of the reformer in an optimal state Can be.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1 is a schematic perspective view of a dish-type solar heat collecting device according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a control flow of the dish-type solar heat collecting device shown in FIG. 1.

3 is a schematic partial cross-sectional view showing a state in which the shading means shown in FIG.

FIG. 4 is a schematic partial plan view of a modification of the shading means shown in FIG. 1, showing a state in which the shading means is installed in the dish-shaped reflector.

5 is a schematic configuration diagram of a dish-type solar heat collecting device according to another embodiment of the present invention.

<Brief description of symbols for the main parts of the drawings>

100, 300: dish type solar collector

110, 210, 310: dish reflector 120, 320: heat collecting module

130, 230, 330: Shading means 135, 235, 335: Shading screen

139, 239 and 339: drive unit 140: control unit

150: memory

Claims (6)

Dish type reflector for condensing sunlight; A heat collecting module for collecting solar light reflected from the reflecting plate and using the heat source of the reactor of the reformer; Shading means for adjusting a light collecting area of the reflecting plate; And And a control unit for causing the shading means to adjust the light collecting area of the reflecting plate to maintain the operating temperature of the reactor in a set temperature range. The method according to claim 1, The reflector is a plate-type solar heat collecting device including a plurality of reflectors are arranged spaced apart in the circumferential direction. The method according to claim 2, The shading means, Sunshade films provided on the plurality of reflectors, respectively; And Dish-type solar heat collecting device including a drive unit for adjusting the area covering the reflector film the reflector. The method of claim 3, The driving unit is a plate-type solar heat collecting device for rolling or spreading the sunshade film in a roll blind manner. The method of claim 3, The driving unit is a dish-type solar heat collecting device for folding or spreading the sunshade in a bellows manner. Dish type reflector for condensing sunlight; A heat collecting module for collecting solar light reflected from the reflecting plate and using the heat source of the reactor of the reformer; Shading means for adjusting an incident area of sunlight incident on the heat collecting module; And And a control unit for causing the shading means to adjust the incident area of the heat collecting module so as to maintain the operating temperature of the reactor in a set temperature range.

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