KR20120113631A - Condenser for solar heat absorber of vacuum tube type for concentrating sunlight having curvature type reflector - Google Patents

Abstract

The present invention is a vacuum tube; A heat medium pipe installed inside the vacuum tube and providing a movement path of the heat medium; A reflection plate disposed around the heat medium pipe by having a curvature on a portion of the inner surface of the vacuum tube and reflecting light for condensing; And an absorbing plate positioned between the reflecting plate and the heat medium pipe, the light collecting plate having a curvature-type reflecting plate arranged to collect heat by the reflecting plate so as to transfer heat to the heat medium pipe.
According to the present invention, it is possible to realize high temperature and high efficiency by increasing the endothermic efficiency, and furthermore, the structure is simple to reduce the manufacturing cost, and to reduce the installation cost by minimizing the number or area of installation to improve efficiency and performance Can be.

Description

Condenser for solar heat absorber of vacuum tube type for concentrating sunlight having curvature type reflector}

The present invention is a technology applying a reflector formed with a curvature inside the vacuum tube, a product that adopts a method that improves the problem when installing the reflector on the outside as a light-condensing vacuum tube solar collector having a curvature type reflector to facilitate assembly and maintenance It is about.

In general, vacuum tube solar collectors are classified into two types, the non-collecting collector and the condenser, depending on whether the collector is collected.

In addition, the light collecting collector is divided into a light collecting collector with a tracking system and a light collecting collector without a tracking system.

A condenser with a tracking system is a system in which a reflector automatically tracks the sun through the cooperation of a professional system and collects solar radiation on the endothermic body of a vacuum tube. Condensing collectors with such tracking systems have been applied, for example, to condensing collectors of solar thermal power plants in California, USA, which consist of a parabolic reflector, a direct tube and an automatic tracking system.

However, the light collecting collector having such a conventional tracking system has a problem that it is difficult to spread and use on a large scale because of its complicated structure and very high manufacturing cost.

In addition, a condenser without a tracking system consists of a kind of non-imaging optical system to focus the solar radiation projected from various directions on a fixed heat sink without the need to track the sun.

However, the light collecting collector without the conventional tracking system has a problem in that the manufacturing cost is low due to the relatively simple structure, and there is a limit in increasing the endothermic efficiency. Therefore, there is a need for the development of a light collecting collector without a tracking system that can increase efficiency.

In addition, it is necessary to develop a light collecting collector capable of maximizing performance improvement in the case of a tracking type as well as a non-tracking light collecting collector.

In order to solve the conventional problems as described above, the present invention can realize a high temperature and high efficiency by increasing the endothermic efficiency, furthermore, the structure is simple to lower the manufacturing cost.

In addition, the present invention is to reduce the installation cost by minimizing the number or area of installation to improve efficiency and performance.

Other objects of the present invention will be readily understood through the following description of the embodiments.

In order to achieve the above object, according to an aspect of the present invention, in the solar collector, a vacuum tube; A heat medium pipe installed inside the vacuum tube and providing a movement path of the heat medium; A reflecting plate positioned around the heat pipe to reflect the light for condensing by being installed to have a curvature on the inner surface of the vacuum tube; And an absorption plate positioned between the reflecting plate and the heat medium pipe, the absorbing plate being collected by the reflecting plate to transfer heat to the heat medium pipe.

The heat medium pipe may be formed of a heat pipe inserted in the longitudinal direction of the vacuum tube.

The heat medium pipe may be formed of a heat exchange pipe passing through the vacuum tube in a longitudinal direction.

The heat medium pipe may be inserted into a lengthwise direction of the vacuum tube and formed of a double tube including an inner tube and an outer tube, and the inner tube and the outer tube may be connected to the inner tube inside.

The heat medium pipe is made of a U-shaped tube inserted in the longitudinal direction of the vacuum tube, the reflecting plate is provided in plurality so as to correspond to each side of the side of the U-shaped tube, respectively, the absorbing plate is each of the reflecting plate and the U-shaped tube The side by side may be made of a plurality so as to be installed between each side.

The reflective plate may be made of any one of a polished aluminum sheet, a stainless steel sheet, and a copper sheet.

The absorbing plate may be made of any one of an aluminum plate, a stainless steel plate, and a copper plate, and may be coated with oxygen nitride.

According to the present invention, the light-condensing vacuum tube solar collector having the curvature-type reflector according to the present invention can realize high temperature and high efficiency by increasing the endothermic efficiency, and furthermore, the structure is simple and the manufacturing cost can be reduced, and the efficiency and performance are improved. Installation costs can be reduced by minimizing the number and area of installation.

1 is a front view showing a light collecting vacuum tube solar collector having a curvature type reflecting plate according to a first embodiment of the present invention,
2 is a perspective view of FIG. 1,
3 is a cross-sectional view showing a light collecting vacuum tube solar collector having a curvature type reflector according to a second embodiment of the present invention;
4 is a perspective view of FIG. 3,
5 is a cross-sectional view showing a light-collecting vacuum tube solar collector having a curvature-type reflector according to a third embodiment of the present invention;
6 is a perspective view of FIG. 5,
7 is a cross-sectional view showing a light-collecting vacuum tube solar collector having a curvature-type reflector according to a fourth embodiment of the present invention;
8 is a perspective view of FIG. 7,
9 is a cross-sectional view showing a light-collecting vacuum tube solar collector having a curvature-type reflector according to a fifth embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention, And the scope of the present invention is not limited to the following examples.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and redundant explanations thereof will be omitted.

1 is a front view showing a light-collecting vacuum tube solar collector having a curvature-type reflector according to a first embodiment of the present invention, and FIG. 2 is a perspective view of FIG.

1 and 2, the light-collecting vacuum tube solar collector 100 having the curvature-type reflector according to the first embodiment of the present invention is installed inside the vacuum tube 110 and the vacuum tube 110 The heat medium pipe 120, the reflection plate 130 provided on the inner surface of the vacuum tube 110, and the curvature-shaped absorption plate 140 provided between the reflection plate 130 and the heat medium pipe 120 may be included. .

The vacuum tube 110 is made of a vacuum tube to maintain a vacuum inside, for example, may be made of tempered glass as rod silicate glass, thereby minimizing the risk of damage caused by natural disasters, such standards and materials are collected It can be determined differently according to the area.

The heat medium pipe 120 is installed inside the vacuum tube 110 and provides a movement path of the heat medium heated by the condensation of sunlight. For example, the heat medium pipe 120 may be made of an oxygen-free copper tube, or may be made of a composite material of copper and steel. . Here, the heat medium may start evaporation at low temperature and generate high temperature even in winter solar radiation.

The heat medium pipe 120 may achieve various methods. The heat pipe method may be used by forming a heat pipe inserted in the longitudinal direction of the vacuum tube 110 as in the present embodiment, and the vacuum pipe 110 may be arranged side by side in a large number. When the end of each heat pipe 120 of the vacuum tube 110 may be connected to a manifold (not shown) for the heat medium distribution.

The reflecting plate 130 is installed along the longitudinal direction of the vacuum tube 110 to have a curvature on the inner surface of the vacuum tube 110 to be partially positioned on the circumference of the heat medium pipe 120, for example, the circumference of the heat medium pipe 120. It can be made of any one of the aluminum sheet, the polished aluminum sheet, the stainless steel sheet copper sheet to reflect light for condensing, maximize the reflectivity, and in addition to various materials such as metal for reflecting light Can be done.

Reflector 130 may be installed to be spaced apart from the inner surface of the vacuum tube 110, as in the present embodiment, may be fixed to be in close contact with the inner surface of the vacuum tube 110, if necessary, the shape of the curvature, further, The composite parabolic surface may be formed, and may be formed, for example, in a semi-circular shape so as to be located on a part of the inner surface of the vacuum tube 110 to allow light to be irradiated into the vacuum tube 110.

Absorber plate 140 is located between the reflecting plate 130 and the heat medium pipe 120, the light is collected by the reflecting plate 130 is installed along the longitudinal direction of the vacuum tube 110 to transfer heat to the heat medium pipe 120 , As in the present embodiment, may be fixed to contact the heat medium pipe 120 on the reflector plate 130, or alternatively, may be fixed to contact the heat medium pipe 120 through the reflector plate 130 from the inner side of the vacuum tube 110. have. In addition, the fixing of the absorbing plate 140 and the heat medium pipe 120 or the vacuum tube 110 may be sealed and bonded using a bonding technique such as pressing or welding.

Absorber plate 140 may be made of any one of an aluminum plate, stainless steel plate, copper plate, for example, and may be selectively coated with oxygen nitride, coating, deposition, coating, plating, etc. to increase the absorption efficiency of solar heat Metal ceramic composite mesoselective absorbent coating layers may be formed, thereby maximizing solar heat collection efficiency.

3 and 4, the light-collecting vacuum tube solar collector 200 having the curvature-type reflector according to the second embodiment of the present invention is a light-collecting vacuum tube type having the curvature-type reflector according to the first embodiment. Like the solar collector 100, a light-collecting vacuum tube solar collector including a vacuum tube 210, a heat medium pipe 220, a reflector 230, and an absorber plate 240, and having a curvature type reflector according to the first embodiment. The difference from 100 is as follows.

In the heat-condensing vacuum tube solar collector 200 having the curvature-type reflector according to the second embodiment, the heat medium pipe 220 is formed of a heat exchange pipe penetrating the vacuum tube 210 in the longitudinal direction, thereby forming a header method. At this time, when the vacuum tube 210 is installed side by side in a large number, both ends of the heat medium pipe 220 of each of the vacuum tube 210 may be connected to a manifold for distributing the heat medium.

5 and 6, the light-collecting vacuum tube solar collector 300 having the curvature-type reflector according to the third embodiment of the present invention is a light-collecting vacuum tube type having the curvature-type reflector according to the first embodiment. Like the solar collector 100, a light-collecting vacuum tube solar collector comprising a vacuum tube 310, a heat medium pipe 320, a reflector plate 330, and an absorber plate 340, and having a curvature type reflector according to the first embodiment. The difference from 100 is as follows.

In the light-condensing vacuum tube solar collector 300 having the curvature-type reflector according to the third embodiment, the heat medium pipe 320 is inserted in the longitudinal direction of the vacuum tube 310 to constitute an inner tube 321 and an outer tube 322. It consists of a double tube, the inner tube 321 and the outer tube 322 and the inner tube 321 inside the inner tube 321 is connected to each other, the heat medium moves along the inner side of the inner tube 321 to the inner tube 321 and the outer The heating medium moves between the tubes 322 or in the reverse direction.

As shown in FIGS. 7 and 8, the light-collecting vacuum tube solar collector 400 having the curvature-type reflector according to the fourth embodiment of the present invention is a light-collecting vacuum tube type having the curvature-type reflector according to the first embodiment. Like the solar collector 100, a heat-collecting vacuum tube solar collector including a vacuum tube 410, a heat pipe 420, a reflector 430, and an absorber plate 440, and having a curvature-type reflector according to the first embodiment. The difference from 100 is as follows.

The heat medium pipe 420 of the light-collecting vacuum tube solar collector 400 having the curvature-type reflector according to the fourth embodiment may be formed of a U-shaped tube inserted in the longitudinal direction of the vacuum tube 410. Here, the reflecting plate 430 is provided by forming a plurality, for example, a pair so as to correspond to both sides of the U-shaped tube that is the heat pipe 420, respectively. In addition, the absorbing plate 440 may be formed in a plurality so as to be installed between each of the reflecting plate 430 and each side of the U-tube that is the heat pipe 420, respectively, a pair may be formed to be integral with each other.

As shown in FIG. 9, the light-collecting vacuum tube solar collector 500 having the curvature-type reflector according to the fifth embodiment of the present invention is a light-collecting vacuum tube solar collector having the curvature-type reflector according to the first embodiment ( Like the 100, the vacuum tube 510, the heat medium pipe 520, the reflector plate 530, and the absorber plate 540 are formed, and the absorber plate 540 is zigzag from the reflector plate 530 toward the heat medium pipe 520. By forming to achieve, it is possible to maximize the heat collecting area. In this case, the absorbing plate 540 may be zigzag at a right angle than a right angle to maximize the heat collecting area.

In addition, the absorbing plate 540 in the present embodiment may be applied to all of the absorbing plates 140, 240, 340, and 440 of the light collecting vacuum tube solar collector 100, 200, 300, and 400 having the curvature type reflecting plates according to the first to fourth embodiments.

According to the light-condensing vacuum tube solar collector having the curvature-type reflector according to the present invention (100,200,300,400,500), the reflector plate (130,230,330,430,530) is installed in the vacuum tube (110,210,310,410,510), so that the solar heat is absorbed (140,540,340) inside the circular vacuum tube (110,210,310,410,510) Heat is transferred to the absorber plates 140, 240, 340, 440 and 540, and is transferred to the heat medium pipes 120, 220, 320, 420 and 520 at the ends of the absorber plates 140, 240, 340, 440 and 540 to increase the endothermic efficiency, and is easy to assemble and maintain. Can be generated.

In addition, the light-collecting vacuum tube solar collector 100, 200, 300, 400, 500 having the curvature-type reflector according to the present invention may form a metal as the absorber plates 140, 240, 340, 440, 540, thereby reaching a relatively high operating temperature under conditions that do not track the sun. It has excellent pressure bearing capacity and excellent heat shock performance. In addition, the reflector plates 130, 230, 330, 430, 530 are not contaminated by being installed in the vacuum tubes 110, 210, 310, 410, and 510, thereby extending the service life of the light-condensing vacuum tube solar collectors 100, 200, 300, 400, and 500 having a curvature type reflector.

As such, the light-condensing evacuated tube solar collector (100,200,300,400,500) having the curvature-type reflector according to the present invention has a simple structure compared to the conventional one because the tracking system is unnecessary, and the manufacturing cost is low, and the prospect of diffusion and application is high, and the reflector plate (130,230,330,430,530) This composite parabolic reflector can act as a mirror, thereby concentrating the solar radiation on the heat medium pipes (120,220,320,420,520), so that the operating temperature can reach a higher temperature than the products of the prior art even when the sun is not tracked. In addition, the light-collecting vacuum tube solar collector having the curvature-type reflector according to the present invention may be applied to both a rotating parabolic reflector collecting collector, a parabolic reflector collecting collector, and the like.

As described above, the present invention has been described with reference to the accompanying drawings, but various modifications and changes can be made without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the following claims.

110,210,310,410,510: vacuum tube
120,220,320,420,520: Heat pipe
130,230,330,430,530: Reflector
140,240,340,440,540: Absorber Plate
321: inner tube
322: outer tube

Claims (7)

In solar collectors,
tube;
A heat medium pipe installed inside the vacuum tube and providing a movement path of the heat medium;
A reflecting plate positioned around the heat pipe to reflect the light for condensing by being installed to have a curvature on the inner surface of the vacuum tube; And
Located between the reflecting plate and the heat medium pipe, the absorption plate is installed by the reflecting plate to transfer heat to the heat medium pipe
Condensing vacuum tube solar collector having a curvature-type reflector, characterized in that it comprises a.
The method of claim 1, wherein the heat medium pipe,
A heat-collecting vacuum tube solar collector having a curvature-type reflector, characterized in that the heat pipe is inserted in the longitudinal direction of the vacuum tube.
The method of claim 1, wherein the heat medium pipe,
A heat-collecting vacuum tube solar collector having a curvature-type reflector, characterized in that the heat exchange pipe penetrates the vacuum tube in a longitudinal direction.
The method of claim 1, wherein the heat medium pipe,
A light condensing vacuum tube having a curvature type reflecting plate, which is inserted into a length direction of the vacuum tube and consists of a double tube composed of an inner tube and an outer tube, and between the inner tube and the outer tube and the inner tube inside. Solar collector.
The method of claim 1,
The heat medium pipe is made of a U-shaped tube inserted in the longitudinal direction of the vacuum tube,
The reflector is installed in plurality so as to correspond to each side of the side of the U-shaped tube, respectively,
The absorbing plate is a light-collecting vacuum tube solar collector having a curvature-type reflecting plate, characterized in that a plurality of so as to be installed between each of the reflecting plate and each side of the U-tube side by side.
The method of claim 1, wherein the reflecting plate,
A light-collecting vacuum tube solar collector having a curvature-type reflector, characterized in that it comprises one of a polished aluminum sheet, a stainless steel sheet, and a copper sheet.
The method of claim 1, wherein the absorbing plate,
An anti-condensing vacuum tube solar collector having a curvature-type reflecting plate, which is made of any one of an aluminum plate, a stainless steel plate, and a copper plate, and is coated with oxygen nitride.

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