KR20130077305A

KR20130077305A - Cooling apparatus of solar module

Info

Publication number: KR20130077305A
Application number: KR1020110145942A
Authority: KR
Inventors: 김형중
Original assignee: 주식회사 승원엔지니어링
Priority date: 2011-12-29
Filing date: 2011-12-29
Publication date: 2013-07-09

Abstract

The solar module cooling apparatus of the present invention is installed on the rear of the solar module is installed on the frame and the heat dissipation member having a heat dissipation 휜, a shroud surrounding the heat dissipation member to form a heat dissipation 휜 and a cooling passage, and Installed in the shroud is provided with a blowing fan for blowing air for cooling. This cooling system can increase the cooling efficiency by activating forced and natural convection.

Description

Cooling apparatus of solar module

The present invention relates to a cooling device for a solar module, and more particularly, to a cooling device for a solar module generated by using sunlight.

Generally, the method of using solar energy is divided into a method using solar heat and a method using sunlight. The method of using solar heat is a method of heating and generating electricity by using water heated by the sun, and a method of using sunlight is a method of generating electricity by using sunlight, It is called solar power generation.

In the above-described method, the photovoltaic effect in which photovoltaic power generation is caused by electron-hole electromotive force generated by light energy when irradiating sunlight to a pn junction photovoltaic panel with n-type doping on a silicon crystal. Generate electricity using. For this purpose, a solar cell for collecting sunlight, a photovoltaic module as an aggregate of solar cells, and a solar array for uniformly arranging solar cells are required. For example, when light is incident on the solar module from the outside, electrons in the conduction band of the p-type semiconductor are excited to the valence band by the incident light energy. One electron-hole pair (EHP) is formed inside the p-type semiconductor, and electrons among the electron-hole pairs generated are transferred to the n-type semiconductor by an electric field existing between pn junctions. It passes over and supplies current to the outside.

On the other hand, the efficiency of the photovoltaic module used in the photovoltaic power generation system is the most important factor that determines the economical efficiency of the photovoltaic power generation in the range of about 16 to 18% for the mainstream polycrystalline silicon material. In order to continuously improve such power generation efficiency, maintenance and repair through various devices are essential.

However, solar cells, photovoltaic modules, and photovoltaic arrays for condensing sunlight cause an output degradation of about 0.5% when the temperature rises due to photovoltaic condensation, resulting in about 0.5% reduction in power generation efficiency. In one example, the amount of power generated is higher in spring and autumn than in summer when the amount of solar light is collected. In other words, since the solar module is overheated in summer due to the large amount of insolation, the power generation efficiency is reduced by 20-30% compared to the maximum value.

In view of this, Patent Application No. 2008-45065 discloses a solar module management system using a water jet. The solar module management system using the published water jet has a structure that cools by spraying high-pressure water to the surface of the solar module through the water remaining on the surface of the photovoltaic module is a cause of foreign matter adheres. In addition, since a separate pump and pipe line are required to supply the cooling water, the structure is relatively complicated, and a large installation cost is required.

In the case of the desert in particular, the daytime temperature is high, the efficiency of the solar module is reduced, the configuration as described above has a problem that the supply of cooling water is difficult to receive a lot of restrictions due to the application.

Republic of Korea Patent Publication No. 2011-0053610 discloses a device for improving the efficiency of the solar power plant. The published device has a configuration in which water is injected into the solar module and the water is recovered and recycled.

Patent No. 1097901 discloses a solar module cooling device for cooling by spraying water on a solar module, and Patent Publication No. 2010-0026568 discloses a water-cooled solar position tracking power generation device. 2011-043118 discloses a solar location tracking generator with a water jet.

The above-described solar module cooling device has a problem as described above because the cooling water is directly injected, and the cooling of the sun and the module is limited to the portion to which the cooling water is sprayed, so it is difficult to uniformly cool the solar module.

The present invention is to solve the problems described above, it is possible to uniformly cool each part of the solar module, and to provide a cooling device of the solar module that can improve the power generation efficiency by increasing the cooling efficiency. There is a purpose.

Another object of the present invention is to provide a cooling device for a solar module that can increase the degree of freedom of design, it is suitable for a place where it is difficult to secure the cooling water for cooling the solar module.

The cooling device of the solar module of the present invention for achieving the above object is installed on the back of the photovoltaic module to be installed on the frame and the heat dissipation member having a heat dissipation fan, the heat dissipation member and the heat dissipation fan and cooling passages And a shroud to be formed and a blower fan installed in the shroud to blow air for cooling.

In the present invention, the heat radiation of the heat dissipation member is installed in parallel to each other so as to guide the flow of air from the bottom of the photovoltaic module to form a cooling passage.

In the present invention, the heat dissipation member is provided with a heat dissipation side by side from the top side to cause a chimney effect, the shroud is combined with the heat dissipation member to form a partitioned cooling passage. And the blowing fan is composed of a sirocco fan that can uniformly supply cold air to the partitioned passage installed in the lower portion of the shroud.

The cooling method of the solar module and the cooling device of the solar module of the invention for the development of the present invention can lower the temperature of each part of the solar module uniformly to maximize the cooling efficiency of the solar module to improve the power generation efficiency In addition, it is possible to reduce the variation in the amount of power generation of solar modules according to the season.

1 is a side view of a photovoltaic device equipped with a solar module cooling device according to the present invention.
Figure 2 is an exploded perspective view showing a solar module cooling device in the present invention,
3 is a cross-sectional view of the solar module shown in FIG.
4 is an enlarged perspective view showing a part of the heat dissipation member according to the present invention;
Figure 5 is an exploded perspective view showing another embodiment of the solar module cooling device in the present invention,
6 is a cross-sectional view of the solar module shown in FIG.

The solar module cooling apparatus according to the present invention is for cooling by cooling cold air in a solar module, an embodiment of which is shown in FIGS. 1 to 4.

Referring to the drawings, the photovoltaic module cooling device 10 is a rear surface of the photovoltaic module 100 installed on the main frame 11 installed on the ground or a building and the subframe 12 fixed to the main frame 11. It is provided on the heat dissipation member 20 for dissipating heat. And a shroud 30 coupled to the heat dissipation member to form a cooling passage, and a blower 40 installed at the shroud 30 to blow outside air to the heat dissipation member 20 side.

The heat dissipation member 20 includes a base part 21 fixed to the rear surface of the solar module 100, and heat dissipation beams 22 formed outwardly from the base part 21. The heat dissipation fans are formed parallel to each other from the lower side to the upper side of the base plate 21 to form a plurality of cold air passages. Guide collars 23 for guiding the flow of wind in the up and down direction may be formed on both side surfaces of the heat dissipation fan formed on the base plate 21. It is preferable to allow the air supplied from the blower 40 to be discharged through the upper and lower passages 24 and 25 formed by partitioning by the shroud 30. The guide feather 23 is concentrated in a portion corresponding to the blower. The heat dissipation member 22 of the heat dissipation member may further include a separate heat transfer unit such as a heat pipe. And both sides of the photovoltaic module may be further provided with an auxiliary heat dissipation member 26 having an auxiliary cooling passage (26a) that can cause the flow of air by the chimney effect. A heat sink fin may be formed on the upper surface of the auxiliary cooling passage 26 to easily heat air in the auxiliary cooling passage 26 by solar heat.

The heat dissipation member is not limited to the above-described embodiment and may be any structure that can easily transfer heat from the solar module 100 to the outside.

Meanwhile, in the solar module cooling apparatus, as illustrated in FIGS. 5 and 6, the heat dissipation beams 22 and the shroud 35 of the heat dissipation member 20 are in close contact with each other, and thus the cold air may individually cause the chimney effect. A plurality of cooling passages are formed, and the sirocco fan 52 is installed to activate the flow of air flowing from the lower side to the upper side of the cooling passage 51 by the chimney effect. The inlet side on which the sirocco fan 52 is installed is large enough to cause sufficient air flow during the installation of the sirocco fan 52. The sirocco fan 52 is provided with a separate controller to be operated when heated above the temperature set by the temperature sensor installed in the solar module.

Further, the upper side of the cooling passage 51 formed in the heat dissipation member 20 is further provided with an induction heating member 60 for heating the air at the upper side of the passage by solar heat to cause the chimney effect. The induction heating member 60 has a connection passage 61 in communication with each cooling passage 51, protrudes toward the upper side of the solar module 100 is heated by the sun. Reference numeral 70 is a temperature detection sensor for driving a blowing fan (sirocco fan) by detecting the temperature of the solar module or the ambient temperature.

Referring to the operation of the solar module cooling apparatus according to the present invention configured as described above are as follows.

In order to cool the photovoltaic module 10 that is being generated using the photovoltaic module cooling device 10 according to the present invention, the temperature of the photovoltaic panel detected by the temperature detection sensor 70 installed in the photovoltaic module 100. When is raised above the set temperature, the blower 40 or the sirocco fan 52 is operated.

As shown in FIGS. 2 and 3, when the blower 40 is operated, air supplied from the blower is guided by the guide vane 23 and moved along the cooling passage, and is transferred from the solar module to heat. 22) to cool. At this time, when the driving of the blower 40 discharges the air inside the shroud to the outside, air is introduced from the guide passages located at both sides, and then guided by the guide vane 23 to the blower side. In addition, since the auxiliary heat dissipation member formed on the side of the sun and the module 100 is heated by sunlight, the air inside the cooling passage is heated. Therefore, the heated air is discharged through the upper portion of the cooling passage and the outside air flows into the lower portion of the cooling passage so that the air is continuously circulated.

4 and 5, when the heat dissipation passages are separately formed by the heat dissipation member 20 and the shroud 35, the air supplied from the sirocco fan 52 is radiated while passing through the respective passages. Cooling efficiency of 22 can be improved. In particular, since the induction heating member 60 is installed on the upper side of the heat dissipation member 20, the induction heating member 60 is heated by solar heat, so that air flow to the cooling passage 51 can be smoothly generated by the chimney effect. To help.

The solar module using the cooling device of the solar module as described above is easy to install, can be installed regardless of the installation area of the solar module, it is possible to improve the power generation efficiency according to the cooling of the solar module.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

Cooling and leaving of the solar module of the present invention can be widely applied to various industrial machines such as air modules as well as solar modules.

20; heat radiating member
21; base member
22; heat dissipation
30; shroud
40; Blower fan
60; induction member

Claims

A heat dissipation member installed on a rear surface of the photovoltaic modules installed in the frame and having a heat dissipation beam, a shroud surrounding the heat dissipation member to form a heat dissipation fan and a cooling passage, and air installed in the shroud for cooling Cooling device of a solar module, characterized in that it has a blowing fan for blowing.

The method of claim 1,
The heat dissipation fan of the heat dissipation member is installed in parallel with each other so as to guide the flow of air from the lower portion of the solar module, the solar module cooling apparatus, characterized in that to form a cooling passage.

The method of claim 1,
The heat dissipation member has a heat dissipation fan which is parallel from the top to the bottom so as to cause the chimney effect, and the shroud partitions the cooling passage which is partitioned with the heat dissipation member, and the blowing fan uniformly cools the divided passage. Solar module cooling device, characterized in that installed in the lower portion of the shroud to supply.

The method of claim 3,
The heat dissipation member is connected to the cooling passage and the solar module cooling apparatus further comprises an induction heating member which is heated by sunlight to allow air to flow by the chimney effect.

The method of claim 1,
The solar module cooling device, characterized in that the auxiliary heat dissipation member formed in the longitudinal direction partitioned on both sides of the solar module is formed.