KR20030012754A - Solar Compound parabolic concentrator having a flat plate glass - Google Patents

Abstract

PURPOSE: A solar condensing device having a planar glass is provided to absorb the incident solar light into a circular absorbing pipe by a plane of the reflection, thereby minimizing the light loss. CONSTITUTION: A solar condensing device having a planar glass(22) is characterized in that the planar glass(22) is installed at a plane of the reflection(23) and an outer portion of an absorbing pipe(25) at a solar heat condenser unit and the working fluid flows by using the plane of the reflection(23) having a large reflection factor. The circular absorbing pipes(25) are connected with each other in series to make the working fluid to flow in one direction. The temperature of the working fluid rises according to the solar light reflected from the plane of the reflection(22).

Description

Solar compound parabolic concentrator having a flat plate glass}

The present invention relates to a solar heat collecting device having a flat glass.

In general, solar collectors are divided into natural type and equipment type system as the system application field, and can be classified into low temperature, medium temperature, and high temperature by temperature application. In order to use it, it is essential to collect solar energy.

Since the current collector performance of the existing flat plate collector is not suitable for the application of the high-temperature application, the development of the condenser collector is essential. Most concentrating collectors must track the sun to increase the concentration ratio, so a tracking device is essential. However, CPC type solar collectors are most suitable for medium temperature because they can be designed by selecting the condensing ratio for the application temperature range without tracking solar heat.

The present invention provides a reflective surface design of a device for condensing sunlight in a fixed form and converting it into useful thermal energy without tracking the sun and using a circular glass tube to reduce the heat loss of the tubular absorber. It relates to the shape of a solar collector collector consisting of such components.

To condense solar energy, a reflecting surface is needed to direct sunlight coming into the absorber to the area that receives sunlight. The condenser collects the condensing ratio by the area absorbed by the area receiving sunlight, and the higher the condensing ratio, the higher the heat energy can be obtained without heat loss. However, if the condensation ratio is too high, there is a limit to the fixed type installation and use, and the tracking device must be tracked.

CPC type collector is a collector that collects solar heat without a tracking device and can be fixedly installed like a flat plate collector.

In order to solve the above problems, the present invention is a device that can be fixedly installed like a conventional flat type but can increase the heat collecting temperature to a temperature higher than the medium temperature, which is higher than the flat type. In terms of installation, maintenance, and maintenance, it can be handled in the same way as a flat plate type, and its purpose is to manufacture a device that can raise the condensing temperature by reducing heat loss.

1 is a cross-sectional view of a solar collector using a flat glass

2 is a cross-sectional view of the reflecting surface of a complex solar collector using a tubular absorber

3 is a unit solar concentrator consisting of a combination of an inner circular glass tube, a cylindrical absorber and a reflecting surface;

Figure 4 is a solar collecting collector module using a flat glass

Referring to the drawings made in connection with the invention in order to achieve the above object is as follows.

FIG. 1 shows a cross-sectional view of a solar collecting collector, and the configuration of the apparatus is a flat glass 22, a reflecting surface 23 reflecting sunlight to an absorber, and a circular absorbing tube 25 absorbing reflected sunlight. , A combination of a circular glass tube 26 for reducing heat loss in the absorption tube and a heat insulating portion 24 for blocking heat to the back of the reflective surface.

FIG. 2 shows a single solar condenser, which is composed of a reflecting surface 23, a circular glass tube 26, and a circular absorbing tube 25.

3 is a cross-sectional view of FIG. 2 and the device configuration is the same as FIG.

FIG. 4 illustrates a modular solar condenser configured by combining a plurality of external flat plate glass, a circular absorber tube, a reflective surface, and a circular glass tube surrounding the circular absorber tube.

The light collecting device to which the technique of the present invention is applied uses a reflective surface with high reflectance, and a flat glass has a high transmittance, and the absorption tube absorbing sunlight from the reflective surface maximizes the absorption rate to maximize the absorption of solar energy. Install a copper pipe plated with black chrome to allow the working fluid to flow.

The present invention is to install the plate-shaped glass 22 on the front to prevent heat loss and to fix the parabolic reflector (23) inside to reflect the sunlight to absorb the sunlight from the absorption tube (25) outside the absorption tube The circular glass tube 26 to reduce the heat loss of the furnace is a structure to surround the absorption tube. The glass plate uses glass with good transmittance, and the reflecting surface is made of high reflectance material (98%) and the absorbing tube increases the absorption rate of solar energy by plating black chromium on the surface so that the working fluid flows through the absorption tube. By increasing the temperature of the high temperature can be produced.

This type of module connects circular absorption tubes in series to each other so that the working fluid, which is a heat transfer medium, can flow in one direction, and the working fluid is heated by the sunlight reflected from the reflecting surface. This module form is configured in the form of a module in order to facilitate the connection between the module and the module and to easily correspond to the desired heat collecting area.

The present invention is configured to absorb the incident sunlight to the circular absorption tube by the reflecting surface to minimize the light loss while uniformly distributing the concentrated solar light in the circular absorption tube to produce a temperature above the middle temperature that can not be obtained in the flat plate type have. This type of solar collector is operated as a fixed installation, so there is no need to track the sun and the heat absorption can be reduced by installing a circular absorption tube in the glass tube to solve the heat loss problem. Since it can be manufactured in the form of unit module, it is easy to install and has the advantage of being easy to manufacture as module. It uses solar heat to increase the temperature of working fluid to above the middle temperature to increase the condensing efficiency and can be utilized for hot water hot water supply and air conditioner.

Claims (2)

The solar collector collector shape and structure manufactured by installing flat glass on the reflecting surface and the absorption pipe outside of the unit solar collector, and the unit reflecting surface and the reflecting surface are connected to allow the flow of working fluid. Solar Condenser with Flat Glass According to claim 1, The shape of the circular solar tube outside the circular absorption tube of the unit solar collector and the reflection surface and the unit solar connection collector combined with the external flat glass plate or the unit solar condenser without the internal circular glass tube Solar light concentrator with flat glass, characterized by its structure