KR100662230B1 - A solar photovoltaic cooling system - Google Patents

Abstract

The present invention relates to a photovoltaic generator cooling system, and more particularly, to a tracking photovoltaic generator that tracks the position of the sun and absorbs sunlight to produce electricity, the sun generating the electricity by absorbing the concentrated sunlight A light collecting unit for generating power by solar light by arranging batteries in series or in parallel, and is installed around an outer circumferential surface of the light collecting unit to cool heat accumulated in the light collecting unit, and the light collecting unit corresponds to the left and right sides of one side surface. An exothermic cooling unit including a plurality of spray nozzles for injecting cooling water toward the front and rear surfaces of the solar cell, a cooling water supply pipe for supplying cold water into the exothermic cooling unit, and a solar cell temperature for measuring a temperature accumulated in the solar cell of the light collecting unit. Temperature sensing unit including a sensor and an ambient temperature sensor for measuring the ambient temperature around the light collecting unit, the solar cell temperature sensor and the outside temperature The control unit which transmits a cooling water supply signal when the temperature value of any one of the temperature values measured by the sensor is higher than the temperature value stored in the memory by comparing with the predetermined temperature value stored in the memory, and the cooling water supply sent by the control unit. Receiving a signal to open the valve to pump the cooling water stored in the reservoir with a pump and includes a reservoir operation unit for supplying the cooling water to the cooling water supply pipe.

Description

Solar generator cooling system {A solar photovoltaic cooling system}

1 is an overall configuration diagram of a tracking photovoltaic generator cooling system according to a first embodiment of the present invention.

2 is an overall configuration diagram of a stationary solar generator cooling system according to a second embodiment of the present invention.

3 is an operation flowchart of a cooling system for cooling the accumulated heat of the light collecting unit in the solar generator cooling system of FIGS.

<Explanation of symbols for the main parts of the drawings>

100: tracked solar generator cooling system

110: light collecting unit 120: heat cooling unit

130: cooling water supply pipe 140: temperature detection unit

150: control unit 160: reservoir operation unit

170: reservoir

200: fixed solar generator cooling system

210: condenser 220, 222: support

230: support line 240: piping

250: temperature detection unit 260: control unit

270: reservoir operation unit 280: reservoir

The present invention relates to a photovoltaic generator cooling system, and more particularly, to a photovoltaic generator cooling system that prevents the efficiency of a solar cell from dropping due to heat accumulated in the solar panel.

In general, a solar cell used in a photovoltaic generator generates an electromotive force due to the photovoltaic effect when solar light is irradiated to a solar cell composed of a semiconductor PN junction, and current flows to a load connected to the outside. These solar cells have been commercially used and used in the solar cell panels that can withstand the impact of the solar cells put in a certain structure by connecting in series and parallel with the required unit capacity.

However, solar cells have a disadvantage in that electricity is not generated on days and nights where sunlight does not shine in rain, snow or clouds.

Therefore, since the solar cell generates electricity by using sunlight, the amount of power generated increases as the amount of incident light increases.

Therefore, in order to maximize the amount of power generation as well as to make the amount of power that changes every moment according to the position of the sun, a solar generator with a solar tracking device that changes the position of the solar cell according to the position of the sun was developed. .

In order to efficiently collect light, the solar power generator equipped with a solar tracking device divides a predetermined time into sections to determine the location of the light collecting plate, and when the time interval is reached, the light collecting plate efficiently condenses the solar beam by moving the light collecting plate to a preset position. To make it work.

However, although the sunlight can be efficiently collected, as described above, when the temperature of the solar cell rises too high, the resistance value of the current flowing inside the solar cell increases, causing a loss of power.

Therefore, due to such a problem, the power generation efficiency is lowered, and the power produced is lost and at the same time, the life of the solar cell is shortened.

An object of the present invention devised to solve the above-mentioned problems is to provide a solar generator cooling system that prevents the efficiency of solar cells from dropping by cooling the overheated solar cells due to heat accumulated in the solar cells.

In addition, another object of the present invention is to produce a power by a plurality of supports, which are each erected at a considerable distance and at least one or more overhead support lines coupled with the plurality of supports and the processing support lines continuously arranged in the It is possible to install large capacity solar power while reducing initial investment cost, and to increase economics by reusing land for agricultural use, and to easily install on mountainous terrain where the terrain is not flat. The present invention provides a solar generator cooling system that can be installed on a river or sea, and can easily remove snow accumulated in a solar cell module in winter and protect the solar cell module when hail falls.

The solar generator cooling system according to the present invention for achieving the above object, in the tracking solar generator that tracks the position of the sun to absorb the sunlight to produce electricity, to generate electricity by absorbing the concentrated sunlight A light collecting unit for generating power by solar light by arranging solar cells in series or in parallel, and is installed around an outer circumferential surface of the light collecting unit to cool heat accumulated in the light collecting unit, and corresponds to the left and right sides of one side surface. An exothermic cooling unit including a plurality of spray nozzles for injecting cooling water toward the front and rear surfaces of the miner, a cooling water supply pipe for supplying cooling water into the exothermic cooling unit, and a solar cell measuring a temperature accumulated in the solar cell of the condenser. Temperature sensing unit including a temperature sensor and an outside temperature sensor for measuring the ambient temperature around the light collecting unit, the solar cell temperature sensor and the outside air The control unit which transmits a coolant supply signal when the temperature value of any one of the temperature values measured by the sensor is higher than the temperature value stored in the memory, and the coolant sent by the controller. Receiving a supply signal to open the valve to pump the cooling water stored in the reservoir with a pump and includes a reservoir operation unit for supplying the cooling water to the cooling water supply pipe.

In addition, the cooling water supply pipe is provided to be connected to the center of the lower surface of the one side of the heating cooling unit, it may include a flexi ball hose.

The temperature sensing unit may include the solar cell temperature sensor as a contact temperature sensor and the outside air temperature sensor may further include a non-contact temperature sensor.

Still another solar generator cooling system according to the present invention is a fixed solar generator for producing power using the solar light, the first support and the second support which is set at a predetermined distance spaced apart, the first support and At least one support line connected between the two supporters, a light concentrating unit arranged in series or in parallel to generate a plurality of solar cells that generate electricity by absorbing the collected solar light continuously arranged on the support line, and producing power by sunlight; A pipe part penetrating through the left and right sides of the first support and communicating with the left and right sides of the second support; Solar cell temperature sensor for measuring the temperature accumulated in the solar cell of the air and the outside air to measure the ambient temperature around the light collecting unit A temperature sensing unit including a degree sensor, and compares any one of temperature values measured by the solar cell temperature sensor and the outside temperature sensor with a predetermined temperature value stored in the memory, It includes a control unit for transmitting a coolant supply signal when the high and a reservoir operation unit for receiving the coolant supply signal sent from the control unit to open the valve to pump the coolant stored in the reservoir with a pump and to supply the coolant to the pipe.

The temperature sensing unit may include the solar cell temperature sensor as a contact temperature sensor and the outside air temperature sensor may further include a non-contact temperature sensor.

Hereinafter, with reference to the accompanying drawings will be described in detail a first preferred embodiment of the present invention.

1 is an overall configuration diagram of a solar generator cooling system according to a first embodiment of the present invention.

Referring to FIG. 1, the solar generator cooling system 100 according to the second embodiment of the present invention includes a light collecting unit 110, a heat cooling unit 120, a cooling water supply pipe 130, a temperature sensing unit 140, and a controller. 150, the reservoir operation unit 160 and the reservoir 170.

The condenser 110 supports the solar cell 112, and the solar cell 112 is configured to produce power by sunlight by arranging in series or parallel to absorb the collected solar light and generate electricity. It is.

At this time, the solar cell 112 provided in the light collecting unit 110 is generally made of a semiconductor compound so that it is possible to convert the solar energy directly into electricity, the solar cell 112 is composed of a semiconductor PN junction solar cell ( When the sunlight is irradiated to the 112, the electromotive force is generated by the photovoltaic effect so that the current flows to the load connected to the light collecting unit 110.

In this case, when the temperature accumulated in the light concentrator 110 is too high, the resistance value of the current flowing inside the solar cell 112 is increased to accumulate on the surface of the light concentrator 110 to prevent power loss. The exothermic cooling unit 120 for cooling the heat is installed around the outer circumferential surface of the light collecting unit 110.

The exothermic cooling part 120 is provided to correspond to the left and right side surfaces of the light collecting part 110, and includes a plurality of spray nozzles 122 that spray cooling water toward the front and rear surfaces of the light collecting part 110.

The spray nozzle 122 is configured to eject a high pressure liquid or gas, but provided with a nozzle having a plurality of through-holes so as to spray a large amount of liquid in a wide range even with a small amount of the front of the solar cell 112 and It is configured to spray coolant which is water or gas on the rear side.

 The cooling water supply pipe 130 is provided to supply the cooling water into the heating cooling unit 120 and is provided to be connected to the center of one lower surface of the heating cooling unit 120.

In this case, the coolant supply pipe 130 is driven by a motor (not shown) of the condenser 110 so that the condenser 110 is connected to the exothermic cooling part 120 when the condenser 110 changes in angle depending on the sun position. In the case where the supply pipe 130 may be broken or the condenser 110 may operate smoothly, the flexible ball hose may be used.

On the other hand, the light collecting unit 110 is provided with a temperature sensing unit 140 to measure the temperature accumulated in the solar cell 112.

In this case, the temperature sensing unit 140 includes a solar cell temperature sensor 142 for measuring the temperature of the solar cell 112 and an outside temperature sensor 144 for measuring the ambient temperature around the condenser 110.

The solar cell temperature sensor 142 is installed on the surface of the solar cell 112 to measure the surface temperature of the solar cell 112 is provided as a contact type temperature sensor for measuring the temperature through contact with the measurement object Preferably, the solar cell temperature sensor 142 is any one of a (platinum) resistance temperature sensor, thermistor, thermocouple, and bimetal.

In addition, the outside air temperature sensor 144 is preferably a non-contact digital temperature sensor so as to measure the ambient temperature around the condenser 110.

At this time, the temperature value data of the atmosphere measured by the outside air temperature sensor 144 measures the temperature using the minute voltage difference generated by the temperature difference to amplify the minute voltage generated through the thermocouple (not shown). Transfer to 150.

On the other hand, a predetermined program for comparing the temperature value measured by the solar cell temperature sensor 142 and the outside air temperature sensor 144 with a predetermined temperature value stored in the memory 152 of the controller 150 It is preferable to provide.

At this time, the controller 150 is a temperature value measured by any one of the temperature sensor of the solar cell temperature sensor 144 and the outside temperature sensor 144 and a predetermined temperature value stored in the memory 152 and In comparison, when the temperature is higher than the temperature value stored in the memory 152, the cooling water supply signal is transmitted to the reservoir operation unit 160 which will be described later.

At this time, when the reservoir operation unit 160 receives the cooling water supply signal (wireless or wired) sent from the control unit 150, the pump 166 operates and the reservoir is connected to the cooling water supply signal sent from the control unit 150. In response, the pump 166 pumps the coolant stored in the reservoir 170 and the coolant is pulled up via the pump 166.

At this time, the valve 162 is opened by the coolant supply signal sent from the controller 150, and the coolant passes through the open valve 162 by the pressure of the automatic pressure control tank 164 to pass through the pipe 132. The gas is supplied to the exothermic cooling part 120 via the cooling water supply pipe 130 by the pressure of the automatic pressure regulating tank 164.

At this time, the cooling water supplied to the exothermic cooling unit 120 is injected into the spray nozzle 122 by the pressure of the pressure control tank.

2 is an overall configuration diagram of a solar generator cooling system according to a second embodiment of the present invention.

2, the solar generator cooling system 200 according to the second embodiment of the present invention includes a light collecting unit 210, supports 220 and 222, support lines 230, a piping unit 240, and a temperature sensing unit. 250, a controller 260, a reservoir operation unit 270, and a reservoir 280.

The support 220 is provided to face at positions parallel to each other at a position spaced a predetermined distance.

In addition, the support line 230 is provided with at least one connected between the first support 220 and the second support (222).

In this case, the light collecting unit 210 is arranged to be continuously arranged on the support line, the light collecting unit 210 by arranging a plurality of solar cells 212 in series or in parallel to absorb the collected solar light to generate electricity. It is provided on the front to produce power by sunlight.

In this case, since the condensing unit 210 and the solar cell 212 have the same structure and operation as the condensing unit 110 and the solar cell 112 described above, description thereof will be omitted.

On the other hand, the pipe part 240 is provided to pass through the left and right sides of the first support 220 to pass through the left and right sides of the second support (222).

In addition, one side of the pipe part 240 is provided with a plurality of spray nozzles 242 for spraying liquid or gas on the front and rear of the solar cell 212.

On the other hand, the light collecting unit 210 is provided with a temperature sensing unit 250 to measure the temperature accumulated in the solar cell (212).

At this time, the temperature detector 250 is provided with a solar cell temperature sensor 252 for measuring the temperature of the solar cell 212 and the outside temperature sensor 254 for measuring the ambient temperature around the light collecting unit 210.

The solar cell temperature sensor 252 is provided on the surface of the solar cell 212 to measure the surface temperature of the solar cell 212 is provided as a contact type temperature sensor for measuring the temperature through contact with the measurement object Preferably, the solar cell temperature sensor 252 is any one of a (platinum) resistance temperature sensor, thermistor, thermocouple, and bimetal.

In addition, the outside air temperature sensor 254 is preferably provided as a non-contact digital temperature sensor so as to measure the ambient temperature around the condenser 210.

At this time, the temperature value measured by the temperature detector 250 amplifies the minute voltage generated through the thermocouple by measuring the temperature using the minute voltage difference generated by the temperature difference (not shown) the control unit 260 to be described later To send.

On the other hand, a predetermined program that can compare the temperature value measured by the solar cell temperature sensor 252 and the outside air temperature sensor 254 with a predetermined temperature value stored in the memory 262 of the controller 260 It is preferable to provide.

At this time, the controller 260 is a temperature value measured by any one of the solar cell temperature sensor 252 and the outside temperature sensor 254 and a predetermined temperature value stored in the memory 262 and In comparison, when the temperature is higher than the temperature value stored in the memory 262, the cooling water supply signal is transmitted to the water tank operating unit 270 which will be described later.

At this time, when the reservoir operation unit 270 receives the cold water supply signal (wireless or wired) sent from the control unit 260, the pump 276 operates and the reservoir 280 is transmitted from the control unit 260. The pump 276 pumps the cooling water stored in the water storage tank 280 in response to the cooling water supply signal and is pulled up via the pump 276.

At this time, the valve 272 is opened by the coolant supply signal sent from the control unit 260, and the coolant passes through the pipe 244 through the open valve 272 by the pressure of the automatic pressure control tank 274. It passes through and is supplied to the pipe part 240 by the pressure of the automatic pressure regulation tank 274.

At this time, the cooling water supplied to the pipe part 240 is injected into the spray nozzle 242 by the pressure of the automatic pressure control tank 274.

3 is an operation flowchart of a cooling system for cooling the accumulated heat of the light collecting unit in the solar generator cooling system of FIGS.

3, the solar generator cooling system of the present invention, the flow of the operation of the cooling system for cooling the accumulated heat of the light collecting unit, the light collecting unit including the solar cells 112, 212 ( The solar cells 112 and 212 are arranged in series or in parallel so as to generate electricity by absorbing sunlight collected from the 110 and 210.

At this time, the solar cell temperature sensor 142, 252 and the outside temperature sensor 144, 254 to measure the surface temperature of the solar cells 112, 212 and the ambient air temperature of the solar cell ( It is provided on one side of 112, 212, but measures the temperature and the ambient temperature accumulated in contact with the solar cells 112, 212 (step S110).

Next, amplify the minute voltage generated through the thermocouple (not shown) and transmit the measured temperature value to the control unit 150 or 260 to transmit the solar cell temperature sensor 142 of the temperature sensing unit 140 or 250. 252 and the temperature values measured by the outside temperature sensors 144 and 254 are stored in the memory 152 and 262 of the controller 150 and 260, and the temperature value data measured by the temperature sensor. Are compared (step S120).

Next, when the measured temperature value data is lower than the temperature value data stored in the memory 152, 262, the controller 150, 260 returns to the beginning again and measures the temperature again and the memory 152, 262. If the temperature value is higher than the data stored in the wireless or wired communication to the reservoir operation unit 160, 270 transmits the cooling water supply signal (step S130).

Next, the reservoir operation unit 160 or 270 that receives the coolant supply signal operates the pumps 166 and 276, and the reservoirs 170 and 280 supply the stored coolant to the pumps 166 and 276. Cooling water stored in the reservoirs 170 and 280 is pumped up through the pump 166 by pumping.

At this time, the valves 162 and 272 are opened and the coolant drawn up by the pressure of the automatic pressure regulating tanks 164 and 274 is supplied to the cooling water supply pipe 130 by the pressure via the pipe 242. Via the pipe 244 is supplied to the heat-cooling unit 130 or the pipe unit 240 (step S140).

Then, the supplied cooling water fills the exothermic cooling unit 130 or the piping unit 240 and the spray nozzles 122 and 242 by the pressure of the automatic pressure control tank 164,274. It is injected into the light collecting unit (110) (210).

At this time, the memory 152, 262 of the control unit 150, 260 stores the spraying time for spraying the cooling water, and when the spraying time has elapsed, the valves 162 and 272 which are opened are controlled by the control unit ( It is locked by the operation control signal of 150 and 260 to stop the cooling water supply (step S150).

The present invention can prevent the power generation efficiency is reduced and the life is shortened due to the accumulated heat of the solar cell of the tracking solar generator or the fixed solar generator, and also because the installation is simple in a simple configuration, the existing solar It is also possible to install it again in an optical generator.

The present invention is not limited to the above-described preferred embodiments and can be easily modified by anyone of ordinary skill in the art without departing from the gist of the invention claimed in the claims, Such changes are intended to fall within the scope of the claims.

According to the present invention as described above, by cooling the overheated solar cell due to the heat accumulated in the solar panel to prevent the efficiency of the solar cell to fall more efficiently produce electricity produced by photovoltaic power generation and the life of the solar cell Extendable solar generator cooling system can be provided.

In addition, according to the present invention, a plurality of supports that are erected at positions spaced at a considerable distance, and at least one or more processing support lines combined with the plurality of support and the sun is continuously arranged on the processing support line to produce power by sunlight By including the panel, large-scale photovoltaic power generation is possible while reducing the initial investment cost, land can be reused for agricultural use, and the economic efficiency can be increased, and it can be easily installed on mountainous terrain where the terrain is not flat. In addition, it can be installed at sea, can easily remove snow accumulated in the solar cell module in winter, and can provide a solar generator cooling system that can protect the solar cell module when hail falls.

Claims (5)

In the tracking solar generator that tracks the location of the sun to absorb sunlight to produce electricity, A light collecting unit for generating power by solar light by arranging solar cells generating electricity by absorbing the collected solar light in series or in parallel; Exothermic cooling is provided around the outer circumferential surface of the light collecting portion to cool the heat accumulated in the light collecting portion, and includes a plurality of spray nozzles for spraying cooling water toward the front and rear surfaces of the light collecting portion in correspondence to the left and right sides of one side surface. part; A cooling water supply pipe for supplying cooling water into the exothermic cooling unit; A temperature sensing unit including a solar cell temperature sensor measuring a temperature accumulated in the solar cell of the light collecting unit and an outside temperature sensor measuring an ambient temperature around the light collecting unit; Control unit for transmitting a coolant supply signal when the temperature value of any one of the temperature value measured by the solar cell temperature sensor and the outside temperature sensor is higher than the temperature value stored in the memory ; And Receiving the cooling water supply signal sent from the control unit by opening the valve pumping the cooling water stored in the reservoir tank with a pump and supplying the cooling water to the cooling water supply pipe; Solar generator cooling system comprising a. According to claim 1, wherein the cooling water supply pipe, The heat generator cooling unit is provided to be connected to the center of the lower surface, a solar generator cooling system, characterized in that the flexi ball hose. The method of claim 1, wherein the temperature sensing unit, The solar cell temperature sensor is a contact type temperature sensor and the outside temperature sensor is a solar generator cooling system, characterized in that the non-contact temperature sensor. In a stationary solar generator that uses solar power to produce power, A first support and a second support erected at a predetermined distance apart from each other; At least one support line connected between the first support and the second support; A light concentrating unit arranged in series or in parallel to generate a plurality of solar cells that generate electricity by absorbing the condensed sunlight continuously arranged on the support line and producing power by sunlight; A pipe portion penetrating through the left and right sides of the first support and communicating with the left and right sides of the second support; A plurality of spray nozzles installed at one side of the pipe part to spray cooling water to the front and rear of the solar cell; A temperature sensing unit including a solar cell temperature sensor measuring a temperature accumulated in the solar cell of the light collecting unit and an outside temperature sensor measuring an ambient temperature around the light collecting unit; Control unit for transmitting a cooling water supply signal when the temperature value of any one of the temperature value measured by the solar cell temperature sensor and the outside temperature sensor is higher than the temperature value stored in the memory ; And Reservoir operation unit for receiving the cooling water supply signal sent from the control unit to open the valve to pump the cooling water stored in the reservoir with a pump and to supply the cooling water to the pipe portion; Solar generator cooling system comprising a. The method of claim 4, wherein the temperature sensing unit, The solar cell temperature sensor is a contact type temperature sensor and the outside temperature sensor is a solar generator cooling system, characterized in that the non-contact temperature sensor.

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