KR101603782B1 - Solar power system with the snow melting and cooling function - Google Patents

Abstract

The present invention relates to a solar power generation system including a cooling and snow melting function. The solar power generation system includes: a solar cell module; a temperature measurement unit measuring a temperature of the solar cell module by being installed in the solar cell module; a cooling unit supplying cooling water to prevent the solar cell module from being overheated; a snow removing unit supplying hot water to remove snow laid on the solar cell module; a spray unit spraying the cooling water or the hot water supplied from the cooling unit or the snow removing unit to the solar cell module; and a control unit individually controlling a motion of the cooling unit and the snow removing unit according to the temperature measured in the temperature measurement unit. According to the present invention, the solar power generation system including the cooling and snow melting function efficiently emits heat accumulated in the solar cell module in summer and rapidly removes snow laid in the solar cell module in winter, thereby efficiently maintaining and improving efficiency of power generation of the solar cell module.

Description

[0001] The present invention relates to a solar power system having cooling and snow-

The present invention relates to a solar power generation system having a cooling and snow-melting function, and more particularly, to a solar power generation system having a cooling and snow-melting function, and more particularly, To a solar power generation system having a cooling and snow-melting function.

Generally, the method of using solar energy is divided into a method using solar heat and a method using sunlight. Solar power is a method of heating and generating power by using water heated by solar heat. Solar power is a method of using solar light. Electricity is produced and produced by using solar light. Solar power generation "is called" solar power generation ".

Among the above methods, photovoltaic power generation is a photovoltaic effect (photovoltaic effect) in which photovoltaic power is generated by photovoltaic energy when photovoltaic cells are irradiated with solar cells having n / ), It is a clean energy source that does not have any danger such as greenhouse gas emission, noise and environmental destruction which cause global warming unlike existing energy sources such as fossil raw materials and there is no fear of depletion. Unlike other types of wind and seawater, solar power generation facilities are free from installation and maintenance costs.

Solar power generation requires solar cells for collecting sunlight, photovoltaic modules for collecting solar cells, and solar arrays for uniformly arranging solar cells.

However, in the case of the most widely used silicon solar cell, when the temperature of the solar cell module is increased, a power reduction of 0.5% per 1 ° C occurs. According to these characteristics, the output of photovoltaic power is highest in spring and autumn, not the longest summer. Such a temperature rise is a major cause of deterioration of the power generation efficiency of the photovoltaic power generation. In addition, the solar cell module has a disadvantage in that it can easily accumulate dirt due to weather phenomena such as yellow dust and bad weather. When dirt accumulates on the solar cell module, the power transmission efficiency and the light absorption rate are significantly lowered, so that the power generation efficiency is lowered. When rain or snow falls on the solar panel in the winter, the power generation efficiency is lowered.

Therefore, a solar power generation facility maintenance apparatus is used to prevent the power generation efficiency from being lowered due to such dirt, snow, and rain.

Facilities for improving the efficiency of solar power generation include cooling function to cool the temperature of the solar cell module, washing and snow removal of the accumulated dirt, snow, and rain in the solar cell module, so that the solar cell module can generate a constant output And to maintain the solar power generation facility to be able to do.

In order to improve the efficiency of the photovoltaic power generation system, cooling water and washing water are used for cooling and cleaning the solar cell module. Depending on location, underground water, tap water, and river water are used as cooling water. However, there are many areas where it is difficult to supply sufficient cooling water. Electricity used for supplying and discharging cooling water also reduces the efficiency of the PV system as a whole , And the efficient use of cooling water is one of the most important factors in the design of PV power plant maintenance equipment.

Accordingly, there is an urgent need to develop facilities for efficiently maintaining and improving the efficiency of solar power generation, and for improving the efficiency of solar power generation that can efficiently utilize cooling water.

A conventional technology related to cooling of a solar cell module is to cool cooling water through the surface of the solar cell module or by radiating cooling water toward the air and spraying the cooling water on the surface of the solar cell module. In addition, in connection with the cooling of the solar cell module, there is also a method of enhancing the heat dissipation of the solar cell module by injecting coolant in the radiation structure into the solar cell module.

However, in the conventional cleaning method of the conventional solar cell module, the conventional method using the brush has a possibility of damaging the surface of the solar cell module during long-term operation and damaging the amount of condensed light. Further, when the brush roller is operated for a long time in a rough external environment, the wear of the brush and the durability of the driving part for driving the brush may become a problem. In addition, the conventional method of scattering cooling water into the air can simultaneously perform cleaning and cooling. However, when the airflow rate is above a certain level, it is difficult to spray the entire solar cell module, and the cleaning effect and the snow removing function of the solar cell module are weak There are disadvantages.

KR 20-2007-0001305 U JP 2002-273351 A

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems as described above, and it is an object of the present invention to effectively remove heat accumulated in a solar cell module in summer and to rapidly remove snow accumulated in a solar cell module in winter, And to provide a solar power generation system having cooling and snow-melting function that can be improved.

According to an aspect of the present invention, there is provided a solar power generation system having a cooling and snow-melting function, including: a solar cell module; A temperature measuring unit installed in the solar cell module and measuring the temperature of the solar cell module; A cooling unit for supplying cooling water for preventing overheating of the solar cell module; A snow removing unit for supplying hot water for removing snow accumulated in the solar cell module; A jetting unit for jetting cooling water or hot water supplied from the cooling unit or the snow remover to the solar cell module; And a controller for controlling the operation of the cooling unit and the snow remover according to the temperature measured by the temperature measuring unit.

The cooling unit may include a storage tank for storing cooling water, a pumping unit for sucking and discharging the cooling water of the storage tank, and a cooling unit for supplying cooling water discharged from the pumping unit to the spraying unit, And a control unit for controlling the temperature of the cooling water in the storage tank, wherein the control unit controls the pumping unit when the temperature measured by the temperature measuring unit is higher than a set upper limit temperature, Wherein the control unit controls the first heater to be activated when the temperature measured by the temperature measuring unit is lower than a predetermined lower limit temperature to control the first heater to operate in the storage tank, The cooling water is warmed up and the pumping part is controlled to be actuated to cool the cooling water heated by the first heater And the hot water in the storage tank is injected to the solar cell module through the jetting unit.

A second supply pipe extending from the blower to the first supply pipe so as to supply air from the blower to the spray unit; a second supply pipe installed in the second supply pipe to heat the air supplied to the spray unit; Wherein the control unit controls the first heater, the second heater, and the blower to operate when the temperature measured by the temperature measuring unit is lower than the set lower limit temperature, And the hot water is sprayed through the sprayer for a predetermined period of time, and then the hot air is sprayed.

And a collecting unit collecting cooling water or hot water sprayed from the spraying unit and supplying the recovered cooling water or warm water to the storage tank, wherein the collecting unit is installed on one side of the solar cell module and falls down along the solar cell module A filter for filtering cooling water or hot water recovered in the recovery tank, and a recovery pipe extending to supply cooling water or hot water passing through the filter to the storage tank.

The solar power generation system having the cooling and snow-melting function according to the present invention efficiently dissipates the heat accumulated in the solar cell module in summer and effectively removes snow accumulated in the solar cell module in the winter, thereby effectively maintaining the power generation efficiency of the solar cell module And has the advantage that it can be improved.

1 is a schematic diagram of a solar power generation system having cooling and snow-melting functions according to a first embodiment of the present invention.
2 is a schematic view of a solar power generation system having a cooling and snow-melting function according to a second embodiment of the present invention;
3 is a schematic view of a solar power generation system having a cooling and snow-melting function according to a third embodiment of the present invention.
Fig. 4 is an exploded perspective view of the injection part shown in Figs. 1 to 3. Fig.

Hereinafter, a solar power generation system having a cooling and snow-melting function according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a solar power generation system having a cooling and snow-melting function according to a first embodiment of the present invention. Referring to FIG. 1, a solar power generation system having a cooling and snow-melting function according to a first embodiment of the present invention includes a solar cell module 10, a temperature measurement unit 20, a cooling unit 30, A snow removing unit 40, a jetting unit 50, and a control unit 60. [

The temperature measuring unit 20 is installed on the solar cell module 10 to measure the temperature of the solar cell module 10 in real time and can transmit the measured temperature to a control unit 60 So that it can communicate with the control unit 60 in a wired or wireless manner.

The cooling unit 30 supplies cooling water for preventing the overheating of the solar cell module 10 and includes a storage tank 31 for storing cooling water, And a first supply pipe (35) extending between the pumping part (33) and the spray part (50) to supply the cooling water discharged from the pumping part (33) to the spray part (50) .

The storage tank 31 may be provided with a thermal insulating material or a thermal insulating material (not shown) on its outer side or may be buried in the ground in order to prevent the cooling water of summer from being frosted by outside light in the winter without being heated by direct sunlight.

The pumping part 33 is installed between the storage tank 31 and a jetting part 50 to be described later so as to suck the inside cooling water and supply it to the jetting part 50.

The first supply pipe 35 extends to supply the cooling water sucked from the storage tank 31 to the spraying unit 50 by the pumping unit 33 and the cooling water moves And provides a path through which hot water flows when the snow remover 40 operates. The first supply pipe (35) can be provided with a heat insulating material and a heat insulating material to prevent freezing of winter water or water remaining in the inside.

The snow removing unit 40 supplies hot water for removing snow accumulated in the solar cell module 10 and the snow removing unit 40 is installed in the storage tank 31, And a first heater (41) for heating the cooling water.

The jetting section 50 injects cooling water or hot water supplied from the cooling section 30 or the snow remover section 40 to the solar cell module 10, Respectively.

The jetting section 50 extends along the longitudinal direction of the solar cell module 10 and is provided with a plurality of jetting nozzles 51A for jetting cooling water or hot water to the upper surface of the solar cell module 10 . The jetting section 50 is supported on the solar cell module 10 by a first supporting bracket 50A formed in a letter shape.

The control unit 60 controls the operation of the cooling unit 30 and the snow remover 40 according to the temperature measured by the temperature measuring unit 20, The pumping unit 33 is controlled to be actuated to cause the cooling water in the storage tank 31 to be sprayed to the solar cell module 10 through the jetting unit 50. [

If the temperature measured by the temperature measuring unit 20 is lower than the set lower limit temperature, the controller 60 controls the first heater 41 to warm the cooling water in the storage tank 31, So that the hot water in the storage tank 31 heated by the first heater 41 is sprayed onto the solar cell module 10 through the jetting unit 50. [

The control unit 60 includes a timer for setting the upper limit temperature and the lower limit temperature information in advance and a timer for setting the time. The temperature measured by the temperature measuring unit 20 is compared with the upper limit temperature in summer The comparison between the temperature measured by the temperature measuring unit 20 and the lower limit temperature is set to be performed in the winter season and is set so as not to perform the above-described control during the night without sunlight.

For example, the controller 60 controls the pumping unit 33 to be activated when the temperature of the solar cell module 10 measured by the temperature measuring unit 20 is 35 ° C or more, Is supplied to the solar cell module (10), the solar cell module (10) can be cooled.

If the temperature of the solar cell module 10 measured by the temperature measuring unit 20 is less than 0 占 폚, the controller 60 activates the first heater 41 of the snow remover 40 to store The cooling water in the tank 31 is heated to supply the heated cooling water or hot water to the spraying unit 50 through the pumping unit 33 and the first supply pipe 35 to be sprayed onto the solar cell module 10, It is possible to remove the gender or snow that occurs on the module 10.

The solar power generation system having the cooling and snow-melting function according to the present embodiment as described above prevents overheating of the solar cell module 10 during summer by selectively injecting cooling water and hot water, It is possible to increase the solar light transmittance and to improve the power generation efficiency of the solar cell module 10 by eliminating the snow on the surface of the solar cell module 10 during winter or the property occurring on the surface.

 FIG. 2 shows a solar power generation system having a cooling and snow-melting function according to a second embodiment of the present invention. 2, a solar power generation system having a cooling and snow-melting function according to a second embodiment of the present invention includes a solar cell module 10, a temperature measurement unit 20, a cooling unit 30, A snow removing unit 40, a jetting unit 50, and a control unit 60. [

The solar power generation system having the cooling and snow-melting function according to the present embodiment includes a solar cell module 10, a temperature measurement unit 20, a cooling unit 30, a snow removing unit 40, 50, and a control unit 60, and the snow remover 40 is capable of supplying warm air.

The solar cell module 10, the temperature measuring unit 20, the cooling unit 30, and the jetting unit 50 have the same configurations as those described with reference to FIG.

2, the snow removing unit 40 includes a first heater 41 installed in the storage tank 31 to heat the cooling water in the storage tank 31, a blower 43, A second supply pipe 45 extending from the blower 43 to the first supply pipe 35 so as to supply air from the first supply pipe 43 to the spray unit 50, A second heater 47 for heating the air supplied to the jetting unit 50 and a valve 49 provided on the second supply pipe 45.

The air blower 43 supplies air to the jetting unit 50 through a second supply pipe 45 connected to an end of the first supply pipe 35 so that air can be jetted from the jetting unit 50 .

The second heater 47 is installed on the second supply pipe 45 so that hot air can be blown from the jetting unit 50 and is supplied to the first supply pipe 35 and the jetting unit 50 Heat the air. The blower 43 and the second heater 47 may be integrally formed with a dryer capable of supplying hot air.

The controller 60 controls the first heater 41, the second heater 47, and the blower 43 to be operated, if the temperature measured by the temperature measuring unit 20 is lower than the set lower limit temperature . The control unit 60 may control the first heater 41 and the pumping unit 33 to be actuated and may control the jetting unit 50 when the temperature measured by the temperature measuring unit 20 is less than the set lower limit temperature, The blower 43 and the second heater 47 are controlled to be actuated so that the moisture remaining on the surface of the solar cell module 10 It is possible to prevent the surface of the solar cell module 10 from being frozen or damaged due to removal through hot air.

While the hot water is being injected first, the valve 49 provided in the second supply pipe 45 is locked to block the supply of hot water to the blower 43, and a separate auxiliary valve (not shown) is connected to the first supply pipe 35 It is possible to prevent the hot air from being supplied to the pumping part 33 while the warm air is being supplied.

If the temperature measured by the temperature measuring unit 20 is equal to or higher than a set upper limit temperature, the control unit 60 controls the blower 43 to move the cooling water and the air through the spraying unit 50 It may be sprayed.

Meanwhile, FIG. 3 shows a solar power generation system having a cooling and snow-melting function according to a third embodiment of the present invention. 3, a solar power generation system having a cooling and snow-melting function according to a third embodiment of the present invention includes a solar cell module 10, a temperature measurement unit 20, a cooling unit 30, A snow removing unit 40, a jetting unit 50, and a control unit 60. [

The solar power generation system having the cooling and snow-melting function according to the present embodiment includes a solar cell module 10, a temperature measurement unit 20, a cooling unit 30, a snow removing unit 40, 50, and a control unit 60, and further includes a separate recovery unit 70.

The solar cell module 10, the temperature measuring unit 20, the cooling unit 30, the snow removing unit 40, the jetting unit 50, and the control unit 60 are the same as the second embodiment The solar battery system according to the present invention is the same as that described in the solar power generation system having the cooling and snow-melting function according to the present invention.

The recovery unit 70 recovers the cooling water or hot water sprayed from the spray unit 50 and supplies the recovered cooling water or hot water to the storage tank 31. The recovery unit 71 includes a filter 73 and a recovery pipe 75, .

The collecting box 71 is installed at one side of the solar cell module 10 so that the upper part thereof is opened to collect cooling water or hot water falling down along the solar cell module 10, And the lower portion is sealed. Although not shown in the drawing, water can be passed through the opened upper portion of the collection box 71, and a net-shaped cover can be further provided to prevent foreign substances such as branches and leaves from being introduced into the inside.

The collecting box 71 is disposed below the solar cell module 10 which is injected from the jetting unit 50 and is inclined to receive cooling water or hot water flowing along the solar cell module 10. [ The recovery tube 71 is supported on the solar cell module 10 by a second support bracket 70A formed in a '?' Shape.

The filter 73 filters cooling water or hot water collected in the recovery container 71 and removes foreign matter such as dust and dirt adhering to the solar cell module 10 while flowing along the solar cell module 10 .

The return pipe (75) extends to supply cooling water or hot water that has passed through the filter (73) to the storage tank (31). Although it is not shown in the drawing, it is preferable to further provide a pump on the return pipe 75.

The photovoltaic power generation system having the cooling and snow-melting function according to the present invention including the above-described collecting unit 70 can collect the cooling water or hot water sprayed to the solar cell module 10 through the collecting unit 70 It is possible to reduce the frequency of charging the cooling water separately in the tank 31, which is advantageous in that the maintenance can be easily performed.

FIG. 4 shows in detail a jetting unit 50 of a solar power generation system having a cooling and snow-melting function according to the first to third embodiments of the present invention.

Referring to FIG. 4, the jetting unit 50 includes a partition wall 54 having a space therein and partitioning the space into a first space 52 and a second space 53 in the vertical direction, And a spray nozzle 51A provided on the body 51. The spray nozzle 51A includes a spray nozzle 51A,

The partition wall 54 includes a first space 52 in which the space portion of the body 51 receives the cooling water or hot water supplied from the storage tank 31 and a second space 52 in which the air or warm air supplied from the blower 43 is received As shown in Fig.

The first supply pipe 35 and the second supply pipe 45 are coupled to one end of the body 51 and the first supply pipe 35 is connected to the first space 52 through which cooling water or hot water is supplied And the second supply pipe 45 is coupled to the lower side of the body 51 so as to supply hot air or air to the second space portion 53. [

A plurality of spray nozzles 51A are installed on the outer side of the body 51. More specifically, on the outer side of the body 51 corresponding to the first space 52, a first injection nozzle 51A (not shown) coupled to the outside to discharge cooling water or hot water accommodated in the first space 52, Are arranged at predetermined intervals along the longitudinal direction of the body 51 and on the outer side of the body 51 corresponding to the second space 53, The second injection nozzles 51A are spaced apart from each other along the longitudinal direction of the body 51. [

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that various modifications and equivalent embodiments are possible.

Therefore, the scope of the true technical protection of the present invention should be determined by the technical idea of the appended claims.

10: Solar module
20: Temperature measuring unit
30: cooling section
31: Storage tank
33:
35: first supply pipe
40: snow removing section
41: First heater
43: blower
45: second supply pipe
47: second heater
50:
51: Body
54:
60:
70:
71:
73: Filter
75: Recovery pipe

Claims (4)

A solar cell module;
A temperature measuring unit installed in the solar cell module and measuring the temperature of the solar cell module;
A cooling unit for supplying cooling water for preventing overheating of the solar cell module;
A snow removing unit for supplying hot water for removing snow accumulated in the solar cell module;
A jetting unit for jetting cooling water or hot water supplied from the cooling unit or the snow remover to the solar cell module;
A controller for controlling operations of the cooling unit and the snow remover according to the temperature measured by the temperature measuring unit;
And a recovery unit for recovering cooling water or hot water jetted from the jetting unit and supplying the recovered cooling water or warm water to the storage tank,
The cooling unit may include a storage tank for storing cooling water, a pumping unit for sucking and discharging the cooling water of the storage tank, and a cooling unit for supplying cooling water discharged from the pumping unit to the spraying unit, 1 supply tube,
And a second supply pipe extending from the blower to the first supply pipe so as to supply air from the blower to the spray unit, and a second supply pipe extending from the blower to the first supply pipe, A second heater installed in the second supply pipe to heat the air supplied to the sprayer, and a valve installed on the second supply pipe,
Wherein the control unit controls the pumping unit to be actuated to cause the cooling water in the storage tank to be injected into the solar cell module through the injection unit when the temperature measured by the temperature measurement unit is not less than the set upper limit temperature, The controller controls the first heater to be activated to warm the cooling water in the storage tank and to control the pumping unit so as to move the hot water in the storage tank heated by the first heater to the injection unit The first heater, the second heater, and the blower are controlled to be actuated when the temperature measured by the temperature measuring unit is lower than the set lower limit temperature, For a predetermined period of time,
The solar cell module according to any one of claims 1 to 3, wherein the solar cell module further comprises a solar cell module, And a return pipe extended to supply the passing cooling water or hot water to the storage tank,
The storage tank is further provided with a heat insulating material for preventing freezing in the winter while preventing warming by direct sunlight in summer,
The first supply pipe is further provided with a heat insulating material for preventing freezing during winter,
The upper part of the recovery cylinder is further provided with a cover for allowing water to pass therethrough and preventing foreign matter from flowing into the upper part,
The jetting unit is provided with a body having a space inside thereof and a space part of the body divided into a first space part in which cooling water or hot water supplied from the storage tank is received and a second space part in which air supplied from the blower or warm air is received Wherein the cooling and snowing function comprises a partition wall.
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