JPH09266324A - Solar cell device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solar cell device which makes it possible to cool a solar cell array and recover the heat and fix the amount of cooling air of each solar cell array. SOLUTION: A cooling duct 3 is formed at least on one surface out of both front and rear surface of a solar cell module 1. The solar cell module 1 is cooled with the air flowing in this cooling air duct 3. The air heat-exchanged with each solar cell array 2 comprising a plurality of solar cell modules 1 is discharged by way of each branch duct 6 and each min duct 7 by driving a fan 8 while the amount of supply air in each branch duct 6 is adjusted with each damper 5, thereby equalizing the amount of supply air from an open air intake 9 to each solar cell array 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar cell device having a cooling mechanism and a heat recovery mechanism.

[0002]

2. Description of the Related Art FIG. 13 shows, for example, JP-A-5-18317.
It is a block diagram which shows the conventional solar cell arrangement shown by the 9th publication. In the figure, 31 is a solar cell module, 31a is a cell, 32 and 33 are sealing materials, 34 is a transparent cover made of acrylic resin, 35 is a molding material, 36 is a cooling air flow path, 3
7 is a rear panel, 38 is an air inlet, 39 an air outlet, 40
Is a cross flow fan, 41 and 42 are temperature sensors, 4
3 is an air flow.

Next, the operation will be described. The cross flow fan 40 is connected to a control circuit (not shown), and the solar cell module 31 detected by the temperature sensors 41 and 42.
The solar cell module 31 is configured to be driven according to the temperature inside the vehicle compartment and generate an air flow 43 as indicated by an arrow to cool the solar cell module 31.

Further, although the widths of the solar cell module 31 and the air flow path 36 (directions perpendicular to the plane of the drawing) are constant,
The distance between the solar cell module 31 and the rear panel 37, that is, the height (thickness) of the air flow passage 36 is tapered so that the air flow passage 36 gradually decreases in size from the upstream side to the downstream side. It is configured to increase the flow velocity of air in the flow path 36.

[0005]

The conventional solar cell device as described above has a structure in which the cross-flow fan 40 (blower) is installed for each solar cell module 31, so that ordinary solar light is used. When the above cooling structure is used in the configuration of a power generation system, that is, in the configuration in which a plurality of solar cell modules are connected to form a solar cell array to obtain a desired power generation output, and a plurality of solar cell arrays are further used , Requires multiple blowers,
There are problems that the configuration becomes complicated and the cost becomes high.

The present invention has been made in order to solve the above-mentioned problems, and the cooling / heat recovery of each solar cell array is economical, reliable and efficient with a simple constitution means. The purpose is to obtain a solar cell device that can be used for.

[0007]

A solar cell device according to the present invention includes a plurality of solar cell arrays each including a solar cell module, and at least one of the front and back surfaces of the solar cell module for each of the plurality of solar cell arrays. It is provided with an air flow path portion formed continuously on the surface, and a conduction means connected to the air flow path portion to conduct external air.

Further, a plurality of solar cell arrays each composed of a solar cell module, and an air flow path portion continuously formed on at least one of both front and back surfaces of the solar cell module for each of the plurality of solar cell arrays, A conducting means including a branch duct connected to the air flow path portion, a main duct to which a plurality of the branch ducts are connected, and a blower provided in the main duct to conduct external air to the air flow path portion via the branch duct. And a adjusting unit that adjusts the amount of conduction of the outside air in each air flow path portion by the conducting unit so as to be constant by providing a damper on the branch duct and opening and closing the damper.

Further, a plurality of solar cell arrays each composed of a solar cell module, and an air flow path portion continuously formed on at least one of both front and back surfaces of the solar cell module for each of the plurality of solar cell arrays, A branch duct connected to the air flow path portion, a main duct to which a plurality of the branch ducts are connected, and a conduction means including a blower which is provided in the main duct and conducts external air to the air flow path portion through the branch duct. , And the diameter of the branch duct is formed so that the amount of external air flowing through each air flow path portion by the connecting means is constant.

Further, the module temperature detecting means provided in the solar cell module for detecting the temperature of the solar cell module, the outside air temperature detecting means for detecting the outside air temperature, and the temperature of the solar cell module and the outside air temperature by the module temperature detecting means. The temperature difference with the outside air temperature obtained by the detection means is calculated, and as the temperature difference becomes larger, the arithmetic processing means for setting the air flow rate of the air blower to be larger, and the air flow of the air blower based on the calculation result of the air flow rate by the arithmetic processing means. And a blower control means for controlling the air volume.

The air temperature detecting means provided in the main duct for detecting the temperature of the air in the main duct, the outside air temperature detecting means for detecting the outside air temperature, and the air in the main duct by the air temperature detecting means. The temperature difference between the temperature and the outside air temperature detected by the outside air temperature detecting means is calculated, and as the temperature difference increases, the calculation processing means for setting the blower amount of the blower to be larger, and the calculation result of the blown air amount by this calculation processing means. And a blower control means for controlling the blow rate of the blower.

Further, provided in each solar cell module,
Module temperature detecting means for detecting the temperature of the solar cell module, blast pressure detecting means provided in the main duct for detecting the blast pressure in the main duct, and the temperature of the solar cell module by the module temperature detecting means are preset. And an arithmetic processing means for obtaining the opening degree of each damper from the deviation from the target module temperature, and for obtaining the air flow rate of the blower from the deviation between the air pressure in the main duct by the air pressure detection means and the preset target pressure. And a damper control means for controlling the opening degree of each damper based on the opening degree of each damper by the arithmetic processing means, and a blower control means for controlling the air flow rate of the blower based on the air flow rate by the arithmetic processing means. It is a thing.

Further, an air temperature detecting means provided in the main duct for detecting the temperature of the air in the main duct, the temperature of the air in the main duct by this air temperature detecting means and a preset target set air temperature. And a blower control means for controlling the blow rate of the blower based on the calculation result of the blow rate based on the calculated blow rate of the blower. It is a thing.

Provided between the solar cell array and the branch duct,
A heat collecting plate for reheating the air collected by the solar cell array, an air temperature detecting means provided in the main duct for detecting the temperature of the air in the main duct reheated by the heat collecting plate, and the air. An arithmetic processing means for determining a deviation between the temperature of the air in the main duct by the temperature detecting means and a preset target air temperature, and setting the air flow rate of the blower based on this deviation, and the air flow rate by the arithmetic processing means. And a blower control means for controlling the blow rate of the blower based on the calculation result of

Further, a heat collecting plate provided between the solar cell array and the branch duct to reheat air collected by the solar cell array, and a branch duct provided in the branch duct and reheated by the heat collecting plate. An air temperature detecting means for detecting the temperature of the air in the main duct, a blast pressure detecting means provided in the main duct for detecting the blast pressure in the main duct, and the temperature of the air in the branch duct by the air temperature detecting means in advance. A calculation for obtaining the opening degree of each damper from the deviation from the set target set air temperature, and for obtaining the air flow rate of the blower from the deviation between the blowing pressure in the main duct by the blowing pressure detection means and the preset target pressure The processing means, the damper control means for controlling the opening degree of each damper based on the calculation result of the opening degree of each damper by the calculation processing means, and the air blower of the blower based on the calculation result of the air flow rate by the calculation processing means. A blower control means for controlling those equipped with.

Further, a connection duct having one end connected to the air flow path portion and the other end connected to a blower, a heat exchanger provided in the connection duct, an air flow path portion, a branch duct, a main duct,
An air circulation path formed from a blower and a connection duct, and an air temperature detection means provided in the heat exchanger for detecting the air temperature in the connection duct in the air circulation path, and in the connection duct by this air temperature temperature detection means Of the blower based on the calculation result of the air flow rate by the arithmetic processing means, and the deviation between the air temperature of the And a blower control means for controlling the amount of blown air.

Further, a heat collecting plate, which is provided between the solar cell array and the branch duct and reheats the air collected by the solar cell array, has one end connected to the air flow path and the other end connected to the blower. A connecting duct, a heat exchanger provided in the connecting duct, an air flow path portion, a heat collecting plate, a branch duct, a main duct,
An air circulation path formed from a blower and a connection duct, and an air temperature detection means provided in the heat exchanger for detecting the air temperature in the connection duct in the air circulation path, and in the connection duct by this air temperature temperature detection means Of the blower based on the calculation result of the air flow rate by the arithmetic processing means, and the deviation between the air temperature of the And a blower control means for controlling the amount of blown air.

Further, a connecting duct, one end of which is connected to the air flow path portion and the other end thereof is connected to a blower, is provided at a connecting portion of the connecting duct and the air flow path portion. A first switching damper, which is provided at a connection portion of the connection duct or the outside to switch to the blower, and a second switching damper that switches air flowing out of the blower to the connection duct or the outside, and the first switching damper. And a second switching damper, a heat exchanger provided in a connection duct, an air circulation path formed by an air flow path portion, a branch duct, a main duct, a blower, and a connection duct, and a heat exchanger provided in the heat exchanger. , An air temperature detecting means for detecting the air temperature in the connection duct in the air circulation path, and an air temperature in the connection duct by the air temperature temperature detecting means and a preset target air temperature. An arithmetic processing unit that determines the difference and sets the air flow rate of the blower based on this deviation, and a blower control unit that controls the air flow rate of the blower based on the calculation result of the air flow rate by the arithmetic processing unit Is.

Further, the air flowing into the air flow passage portion is provided at a connection duct connecting one end to the air flow passage portion and the other end to the blower and the air flow passage portion of the connection duct. A first switching damper, which is provided at a connection portion of the connection duct or the outside to switch to the blower, and a second switching damper that switches air flowing out of the blower to the connection duct or the outside, and the first switching damper. And a second switching damper, a heat exchanger provided in a connecting duct, a heat collecting plate provided between the solar cell array and the branch duct to reheat air collected by the solar cell array, and an air collector. An air circulation path formed of a flow path portion, a heat collecting plate, a branch duct, a main duct, a blower, and a connection duct,
An air temperature detecting means provided in the heat exchanger for detecting the air temperature in the connection duct in the air circulation path, an air temperature in the connecting duct by the air temperature temperature detecting means, and a preset target air temperature. And a blower control means for controlling the blow rate of the blower based on the calculation result of the blow rate by the calculation processing means. It is a thing.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. 1 is a configuration diagram of a solar cell device according to a first embodiment of the present invention. In the figure, 1 is a solar cell module having a well-known structure, 2 is a solar cell array composed of a plurality of solar cell modules 1, 3 is a cooling duct mounted on the back surface of the solar cell module 1, 4
Is a chamber for guiding the air in the cooling duct 3 to the branch duct 6, and 5 is a flow rate adjusting damper attached to the branch duct 6.

A main duct 7 is connected to each branch duct 6,
Reference numeral 8 is a blower connected to the main duct 7, 9 is an outside air intake for taking in outside air into the cooling duct 3, 10 is an exhaust port for discharging air in the main duct 7, and 11 is an air flow.
The cooling duct 3 represents an air flow path portion.

Solar cell module 1 of solar cell array 2
Are electrically connected in series to obtain a desired voltage, and the solar cell arrays 2 are electrically connected in parallel to obtain a desired current and a desired power generation output.

Next, the operation will be described. When the blower 8 is driven, an air flow 11 as shown by an arrow in the figure is generated, and air flows in from the outside air intake 9 of the cooling duct 3 to cool the solar cell module 1. The air that has exchanged heat with the solar cell module 1 is collected by the chamber 4, guided to the branch duct 6, and passes through the flow rate adjusting damper 5. After that, the air in each branch duct 6 is introduced into the main duct 7, passes through the blower 8, and is discharged from the exhaust port 10.

Here, the damper opening of the flow rate adjusting damper 5 installed in each branch duct 6 is, for example, as the air flow path from the blower 8 to the branch duct 6 is shorter, that is, the air flow path resistance is smaller. The smaller the value is set, the more the air supplied to each solar cell array 2 can be made equal.

FIG. 2 shows the temperature characteristics of a general solar cell module. As the module temperature rises, the current I _sc is almost the same but the voltage V _oc drops greatly. That is, the power generation output P _m also drops as the voltage V _oc drops.

Generally, the solar cell modules of the solar cell array are electrically connected in series, and the respective solar cell arrays are connected in parallel. Therefore, when the average temperature of each solar cell array is different, the voltage is also different. In this case, the solar cell array having the lowest voltage is rate-determined, and the power generation output as a whole decreases.

Therefore, in the first embodiment, the damper opening degree of the flow rate adjusting damper 5 installed in each branch duct 6 is decreased as the air flow path resistance from the blower 8 to each solar cell array 2 is smaller. Since the degree is set small, the supply air to each solar cell array 2 can be made equal and the average temperatures can be made equal. That is, the voltages can be made equal.

Further, instead of using the flow rate adjusting damper 5, branch ducts having different pipe diameters are used, and the branch duct pipe diameters (branch duct diameters) are set according to the air flow resistance from the blower 8 to each solar cell array 2. ), The same effect can be obtained. Further, if an enlarged heat transfer surface, for example, a plate fin is installed on the cooling surface of the solar cell module 1, a large cooling effect can be obtained by promoting heat transfer.

Although the cooling duct 3 is provided on the back surface of the solar cell module 1 in the first embodiment, a transparent member is used for the cooling duct 3 and the cooling duct 3 is provided on the front surface of the solar cell module 1. Good.

As described above, in the first embodiment, the damper opening of the flow rate adjusting damper 5 installed in each branch duct 6 has a short air flow path resistance from the blower 8 to each solar cell array 2. As the damper opening is set smaller,
Air supplied to each solar cell array 2 can be equalized, and the cooling effect enables efficient operation, which is economically superior.

Further, instead of the flow rate adjusting damper 5, branch ducts having different pipe diameters are used, and the branch duct pipe diameter is set according to the air flow path resistance from the blower 8 to each solar cell array 2. The same effect can be obtained.

Embodiment 2 FIG. 3 is a configuration diagram of a solar cell device according to a second embodiment of the present invention. The components of the solar cell module 1, the solar cell array 2, the cooling duct 3, the chamber 4 and the outside air intake 9 are the same as those in FIG. Since they are the same, illustration is omitted.

In the figure, the same or corresponding parts as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted. 20 is arithmetic processing means, 21 is blower control means, 22 is module temperature detection means for detecting the temperature of the solar cell module 1,
Reference numeral 23 is an outside air temperature detecting means for detecting the outside air temperature.

Next, the operation will be described. Blower 8
The amount of air blown by the arithmetic processing unit 20 is connected to the blower control unit 21, and based on the temperature difference between the detection result of the temperature of the solar cell module 1 by the module temperature detection unit 22 and the detection result of the outside air temperature by the outside air temperature detection unit 23. Is required and driven. When the temperature difference is large, that is, when the amount of solar radiation is large, the blower amount is increased, and when the temperature difference is small, that is, when the amount of solar radiation is small, the blower 8 is controlled to reduce the amount of blown air.

Further, instead of the flow rate adjusting damper 5, branch ducts having different piping diameters are used, and the branch duct piping diameter is set according to the air flow path resistance from the blower 8 to each solar cell array 2. Good.

As described above, in the second embodiment, the temperature difference between the detection results of the module temperature detecting means 22 and the outside air temperature detecting means 23 provided in the solar cell module 1 is obtained, and this temperature difference is large. Since the blower amount of the blower 8 is increased as much as possible, optimal control is performed with respect to increase and decrease of the amount of solar radiation, and it is possible to improve power generation efficiency throughout the year.

Embodiment 3 4 is a configuration diagram of a solar cell device according to a third embodiment of the present invention. The components of the solar cell module 1, the solar cell array 2, the cooling duct 3, the chamber 4 and the outside air intake 9 are the same as those in FIG. Since they are the same, illustration is omitted.

In the figure, parts that are the same as or correspond to those in the first and second embodiments are assigned the same reference numerals and explanations thereof will be omitted. 26
Is an air temperature detecting means for detecting the air temperature in the main duct 7.

Next, the operation will be described. Blower 8
The air temperature detecting means 26 is connected to the blower control means 21.
Based on the temperature difference between the detection result of the air temperature in the main duct 7 by the above and the detection result of the outside air temperature by the outside air temperature detecting means 23, the calculation processing means 20 obtains and drives the air flow rate. When this temperature difference is large, that is, when the amount of solar radiation is large, the blower amount is increased, and when this temperature difference is small, that is, when the amount of solar radiation is small, the blower 8 is controlled to reduce the amount of blown air.

Further, instead of the flow rate adjusting damper 5, branch ducts having different piping diameters are used, and the branch duct piping diameter is set according to the air flow path resistance from the blower 8 to each solar cell array 2. Good.

As described above, in the third embodiment, the temperature difference between the air temperature detecting means 26 provided in the main duct 7 and the detection result of the outside air temperature detecting means 23 is obtained, and this temperature difference is Since the larger the amount of air blown by the blower 8 is, the more optimal control is performed with respect to the increase or decrease in the amount of solar radiation, and it is possible to improve the power generation efficiency throughout the year.

Embodiment 4 FIG. 5 is a configuration diagram of a solar cell device according to a fourth embodiment of the present invention. The components of the solar cell module 1, the solar cell array 2, the cooling duct 3, the chamber 4 and the outside air intake 9 are the same as those in FIG. Since they are the same, illustration is omitted.

In the figure, the same or corresponding parts as those of the first to third embodiments are designated by the same reference numerals and the description thereof will be omitted. 24
Is a damper control means, and 25 is a pressure detection means for detecting the blowing pressure.

Next, the operation will be described. Based on the deviation between the detection result of the temperature of the solar cell module 1 by each module temperature detecting means 22 and the preset target module temperature, the arithmetic processing means 20 causes the flow rate adjusting damper 5 to be released.
The opening degree of the flow rate adjusting damper 5 is adjusted by the damper control means 24. The damper 5 is provided with a drive mechanism (not shown), and the damper control means 24
The damper 5 is driven by the damper opening signal from. The control method is, for example, proportional control of the deviation and the damper opening.

By adjusting the opening of the damper 5, the pressure in the main duct 7 changes, and the changed pressure is detected by the pressure detecting means 25 so that the detected pressure becomes a preset target set pressure. The blower amount of the blower 8 is obtained by the arithmetic processing means 20, and the blower amount of the blower 8 is adjusted by the blower control means 21. The control method is, for example, proportional control of pressure deviation and air flow.

As described above, in the fourth embodiment, the temperature of the solar cell module 1 is detected and the opening degree of the damper 5 is controlled, that is, the amount of air blown to each solar cell array 2 (not shown) is changed. Therefore, the target module temperature is controlled even when the average temperatures of the respective solar cell arrays 2 differ due to uneven solar radiation and shadows of buildings and the like. Further, since the pressure detection means 25 detects the fluctuation of the blowing pressure in the main duct 7 and controls the blowing amount of the blower 8 to control the target set pressure, the stability of the system is increased and the efficient operation becomes possible. , Economically excellent.

Embodiment 5 6 is a configuration diagram of a solar cell device according to a fifth embodiment of the present invention. The components of the solar cell module 1, the solar cell array 2, the cooling duct 3, the chamber 4 and the outside air intake 9 are as shown in FIG. Since they are the same, illustration is omitted. In the figure, the same or corresponding parts as those of the first to fourth embodiments are designated by the same reference numerals, and the description thereof will be omitted.

Next, the operation will be described. Blower 8
The air temperature detecting means 26 is connected to the blower control means 21.
Based on the deviation between the detection result of the air temperature in the main duct 7 and the preset target set air temperature by the calculation processing means 2
The air flow rate is determined by 0 and is driven.

When the heat recovery operation is used for heating, for example, it is guided to the room from the exhaust port 10 by a duct or the like, and the target set air temperature set by the user and the air temperature in the main duct 7 are detected. The blower control means 21 adjusts the blowing amount of the blower 8 so that the deviation from the result becomes small. The control method is, for example, proportional control based on the deviation. Further, the air temperature detecting means 26 may be installed on the exhaust port 10 side.

When the user does not need the heat recovery operation, the cooling operation of the solar cell module 1 (not shown) by the blower 8 is performed without depending on the control. Further, instead of the flow rate adjusting damper 5, branch ducts having different pipe diameters may be used, and the branch duct pipe diameter may be set according to the air flow path resistance from the blower 8 to each solar cell array 2.

As described above, in the fifth embodiment, the blower 8 is based on the temperature difference between the detection result of the air temperature detecting means 26 provided in the main duct 7 and the target set air temperature.
Since the amount of air blown is controlled, it becomes possible to simultaneously perform the heat recovery operation such as heating and the cooling of the solar cell module 1, and improve the solar energy efficiency throughout the year, that is, the power generation efficiency + the heat recovery efficiency. It becomes possible.

Embodiment 6 FIG. 7 is a configuration diagram of a solar cell device according to a sixth embodiment of the present invention.
The same or corresponding parts as those of the first to fifth embodiments are designated by the same reference numerals, and the description thereof will be omitted. 12 is provided between the solar cell array 2 and the branch duct 6, and reheats the air collected by the solar cell array 2. It is a heat collecting plate.

Next, the operation will be described. Blower 8
Connected to the blower control means 21, the air flow rate is obtained by the arithmetic processing means 20 based on the deviation between the detection result of the air temperature in the main duct 7 by the air temperature temperature detection means 26 and the preset target air temperature. Driven.

When the heat recovery operation is used for heating, for example, the air collected by the solar cell array 2 is reheated by the heat collecting plate 12 to become high-temperature air, and the branch duct 6, the main duct 7, the blower. The air blower control means 21 so that the deviation between the target set air temperature set by the user or the like and the detection result of the air temperature in the main duct 7 may be reduced after passing through 8 and being guided to the room from the exhaust port 10 by a duct or the like. The amount of air blower 8 is adjusted by.

The control method is, for example, proportional control based on the deviation. Further, the air temperature detecting means 26 may be installed on the exhaust port 10 side. Further, the air temperature detecting means 26 may be installed at a position close to the user, for example, in a room.

When the user does not need the heat recovery operation, the cooling operation of the solar cell module 1 by the blower 8 is performed without depending on the control. Further, instead of the flow rate adjusting damper 5, branch ducts having different pipe diameters may be used, and the branch duct pipe diameter may be set according to the air flow path resistance from the blower 8 to each solar cell array 2.

As described above, in the sixth embodiment, the heat collecting plate 12 provided between the solar cell array 2 and the branch duct 6 reheats the air collected by the solar cell array 2. Therefore, the temperature of the heat recovery can be increased, and the deviation between the detection result of the air temperature detecting means 26 provided in the main duct 7 and the target set air temperature set by the user is obtained, and the blower is based on this deviation. Since the air flow rate of 8 is controlled, optimal heat recovery is performed, and heat recovery operation such as heating and cooling of the solar cell module 1 can be performed at the same time, and solar energy efficiency throughout the year,
That is, it is possible to improve power generation efficiency + heat recovery efficiency.

Embodiment 7 FIG. FIG. 8 is a configuration diagram of a solar cell device according to a seventh embodiment of the present invention.
The same or corresponding parts as those of the first to sixth embodiments are designated by the same reference numerals and the description thereof is omitted. Reference numeral 27 is an air temperature measuring means for air temperature measurement attached to the branch duct 6.

Next, the operation will be described. Blower 8
Connected to the blower control means 21, the calculation processing means 20 obtains and drives the air flow rate based on the deviation between the detection result of the pressure in the main duct 7 by the pressure detection means 25 and the preset target blow air pressure. . The control method is, for example, proportional control of the deviation and the air flow rate.

When the heat recovery operation is used for heating, for example, the air collected by the solar cell array 2 is reheated by the heat collecting plate 12 to become high temperature air, and the branch duct 6, the main duct 7, and the blower. After passing through 8, the air is introduced from the exhaust port 11 into the room by a duct or the like, and based on the deviation between the target set air temperature set by the user or the like and the detection result of the air temperature by the air temperature detection means 27, the damper is calculated by the arithmetic processing means 20. The opening degree of the damper 5 is determined, and the damper control means 24 adjusts the opening degree of the damper 5. The control method is, for example, proportional control based on the deviation between the target set air temperature and the detection result of the air temperature detecting means 27. Further, when the user does not need the heat recovery operation, the cooling operation of the solar cell module 1 by the blower 8 is performed without depending on this control.

As described above, in the seventh embodiment, the heat collecting plate 12 provided between the solar cell array 2 and the branch duct 6 reheats the air collected by the solar cell array 2. Therefore, the temperature of the heat recovery can be increased, and the opening degree of the damper 5 can be set based on the deviation between the detection result of the air temperature detecting means 27 provided in the branch duct 6 and the target set air temperature set by the user. Since the adjustment is made and the fluctuation of the blower pressure in the main duct 7 is detected by the pressure detecting means 25 and the blower amount of the blower 8 is made variable so as to be controlled to the target set pressure, the stability of the system is increased, and it is optimal. Heat recovery,
The heat recovery operation such as heating and the cooling of the solar cell module 1 can be performed at the same time, and the solar energy efficiency throughout the year, that is, the power generation efficiency + heat recovery efficiency can be improved.

Embodiment 8 FIG. FIG. 9 is a configuration diagram of a solar cell device according to an eighth embodiment of the present invention.
The same or corresponding parts as in Embodiments 1 to 7 are designated by the same reference numerals, and the description thereof will be omitted. 13 is a heat exchanger attached to a connection duct 14 (described later), and 14 is one end connected to the main duct 7. The other end is a connection duct connected to the cooling duct 3 via the branch duct 6 and the chamber 4, and 28 is the heat exchanger 1.
3 is an air temperature measuring means for measuring an air temperature attached to No. 3.

Next, the operation will be described. The air collected by the solar cell array 2 as the blower 8 is driven passes through the branch duct 6, the main duct 7 and the blower 8 and is connected to the connection duct 14
Is introduced into the heat exchanger 13. When the heat recovery operation is used, for example, for heating, etc., the arithmetic processing means 20 of the blower 8 is operated by the arithmetic processing means 20 based on the deviation between the target set air temperature set by the user and the detection result of the air temperature by the air temperature detection means 28. The blower amount is obtained, and the blower control means 21 adjusts the blower amount of the blower 8. The control method is, for example, proportional control based on the deviation. The air that has undergone heat exchange returns to the cooling duct 3 again and follows the path of the air circulation path.

Although the air-air heat exchanger is used here, in the case of using hot water supply, the air-water heat exchanger is used and the water temperature detecting means provided in the water pipe and the target hot water supply set by the user or the like. The control may be performed according to the deviation from the temperature. Also,
Instead of the flow rate adjusting damper 5, branch ducts having different pipe diameters may be used to set the branch duct pipe diameters according to the circulating air flow path resistance from the blower 8 to each solar cell array 2.

As described above, in the eighth embodiment, the air collected in the solar cell array 2 is circulated between the solar cell array 2 and the heat exchanger 13, so that the temperature of heat recovery can be increased. In addition, the amount of air blown by the blower 8 is adjusted based on the difference between the detection result of the air temperature detecting means 28 provided in the heat exchanger 13 and the target set air temperature set by the user, so that the system stability is increased. Optimum heat recovery is performed, heat recovery operation such as heating and cooling of the solar cell module 1 are possible at the same time, and it is possible to improve solar energy efficiency throughout the year, that is, power generation efficiency + heat recovery efficiency.

Embodiment 9 FIG. 10 is a configuration diagram of a solar cell device according to a ninth embodiment of the present invention. In the figure, the same or corresponding parts as those of the first to eighth embodiments are designated by the same reference numerals and the description thereof will be omitted.

Next, the operation will be described. The air collected by the solar cell array 2 as the blower 8 is driven is reheated by the heat collecting plate 12, passes through the branch duct 6, the main duct 7 and the blower 8 and is introduced into the heat exchanger 13 of the connection duct 14. It When the heat recovery operation is used, for example, for heating, etc., the arithmetic processing means 20 of the blower 8 is operated by the arithmetic processing means 20 based on the deviation between the target set air temperature set by the user and the detection result of the air temperature by the air temperature detection means 28. The blower amount is obtained, and the blower control means 21 adjusts the blower amount of the blower 8. The control method is, for example, proportional control based on the deviation. The heat-exchanged air is used again for the cooling duct 3
Return to and follow the air circulation path.

Although the air-air heat exchanger is used here, in the case of using hot water supply, the air-water heat exchanger is used, and the water temperature detection means provided in the water pipe and the target hot water supply set by the user or the like. The control may be performed according to the deviation from the temperature. Also,
Instead of the flow rate adjusting damper 5, branch ducts having different pipe diameters may be used to set the branch duct pipe diameters according to the circulating air flow path resistance from the blower 8 to each solar cell array 2.

As described above, in the ninth embodiment, the air collected in the solar cell array 2 is reheated by the heat collecting plate 12 and circulated between the solar cell array 2 and the heat exchanger 13. Therefore, the temperature of the heat recovery can be increased, and the amount of air blown by the blower 8 is adjusted based on the difference between the detection result of the air temperature detecting means 28 provided in the heat exchanger 13 and the target set air temperature set by the user. As a result, the stability of the system increases, optimal heat recovery is performed, and heat recovery operation such as heating and solar cell module cooling become possible at the same time, improving solar energy efficiency throughout the year, that is, power generation efficiency + heat recovery efficiency. It becomes possible.

Tenth Embodiment FIG. 11 is a configuration diagram of a solar cell device according to a tenth embodiment of the present invention. In the figure, the same or corresponding parts as those of the first to ninth embodiments are designated by the same reference numerals and the description thereof will be omitted. Reference numeral 15a is a switching damper for switching and setting the outflow of air from the main duct 7 to either the heat exchanger 13 via the exhaust port 10 or the connection duct 14.

Reference numeral 15b is a switching damper for switching and setting the inflow of air to the cooling duct 3 from either the outside air intake 9 or the connection duct 14 via the heat exchanger 13. The switching damper 15a
Is the second switching damper, and the switching damper 15b is the first
Each of the switching dampers is shown.

Next, the operation will be described. The air collected by the solar cell array 2 as the blower 8 is driven passes through the branch duct 6, the main duct 7 and the blower 8 and is connected to the connection duct 14
Is introduced into the heat exchanger 13. When the heat recovery operation is used, for example, for heating, etc., the arithmetic processing means 20 of the blower 8 is operated by the arithmetic processing means 20 based on the deviation between the target set air temperature set by the user and the detection result of the air temperature by the air temperature detection means 28. The blower amount is obtained, and the blower control unit 21 adjusts the blower amount of the blower 8. The control method is, for example, proportional control based on the deviation. The air that has undergone heat exchange returns to the cooling duct 3 again and follows the path of the air circulation path.

At this time, the switching dampers 15a and 15b
Is set to form an air circulation path. An open / close shutter may be used instead of the switching dampers 15a and 15b. Here, the air-air heat exchanger is used, but in the case of hot water use, the air-water heat exchanger is used, and the water temperature detection means provided in the water pipe and the target hot water temperature set by the user etc. You may control by a deviation.

When the user does not need the heat recovery operation, the switching damper 15b of the connection duct 14 is switched to introduce air from the outside air intake 9 without depending on the control, and the solar cell module 1 by the blower 8 is introduced. The cooling operation is performed, the switching damper 15a is switched, and gas is exhausted from the exhaust port 10. Further, instead of the flow rate adjusting damper 5, branch ducts having different pipe diameters may be used to set the branch duct pipe diameters according to the circulating air flow path resistance from the blower 8 to each solar cell array 2. .

As described above, in the tenth embodiment, the air collected in the solar cell array 2 is circulated between the solar cell array 2 and the heat exchanger 13, so that the temperature of heat recovery can be increased. According to the difference between the detection result of the air temperature detecting means 28 provided in the heat exchanger 13 and the target set air temperature set by the user, the blowing amount of the blower 8 is adjusted, and when heat recovery is not necessary, switching is performed. Damper 15a,
Air is introduced from the outside air intake port 9b by 15b, the solar cell module 1 is cooled, and then the air is exhausted from the exhaust port 10. Therefore, the heat recovery operation such as heating and the solar cell module 1 are performed.
Can be simultaneously cooled, and solar energy efficiency throughout the year, that is, power generation efficiency + heat recovery efficiency can be improved.

Eleventh Embodiment FIG. 12 is a configuration diagram of a solar cell device according to an eleventh embodiment of the present invention. In the figure, the same or corresponding parts as those of the first to tenth embodiments are designated by the same reference numerals and the description thereof will be omitted.

Next, the operation will be described. The air collected by the solar cell array 2 as the blower 8 is driven and reheated by the heat collecting plate 12 is introduced into the heat exchanger 13 of the connection duct 14 through the branch duct 6, the main duct 7, and the blower 8. To be done. When the heat recovery operation is used, for example, for heating, etc., the arithmetic processing means 20 of the blower 8 is operated by the arithmetic processing means 20 based on the deviation between the target set air temperature set by the user and the detection result of the air temperature by the air temperature detection means 28. The blower amount is obtained, and the blower control means 21 adjusts the blower amount of the blower 8. The control method is, for example, proportional control based on the deviation. The heat-exchanged air follows the path of returning to the cooling duct 3 again.

At this time, the switching dampers 15a and 15b are set so as to form an air circulation path. An open / close shutter may be used instead of the switching dampers 15a and 15b. Here, the air-air heat exchanger is used, but in the case of hot water use, the air-water heat exchanger is used, and the water temperature detection means provided in the water pipe and the target hot water temperature set by the user etc. You may control by a deviation.

When the user does not need the heat recovery operation, the switching damper 15b of the connection duct 14 is switched to introduce air from the outside air intake port 9 without depending on the above-mentioned control, and the solar cell module 1 of the blower 8 is operated. The cooling operation is performed, the switching damper 15a is switched, and the exhaust port 1
Evacuate from zero. Further, instead of the flow rate adjusting damper 5, branch ducts having different pipe diameters may be used to set the branch duct pipe diameters according to the circulating air flow path resistance from the blower 8 to each solar cell array 2. .

As described above, in the eleventh embodiment, the air collected by the solar cell array 2 is reheated by the heat collecting plate 12 and circulated between the solar cell array 2 and the heat exchanger 13. As a result, the temperature of heat recovery can be increased and the heat exchanger 1
The air blowing amount of the blower 8 is adjusted based on the deviation between the detection result of the air temperature detecting means 28 provided in No. 3 and the target air temperature set by the user, and when heat recovery is not necessary, the switching dampers 15a, 15b. Due to outside air intake 9
Since more air is introduced and the solar cell module 1 is cooled and then air is exhausted from the exhaust port 10, heat recovery operation such as heating and cooling of the solar cell module 1 are possible at the same time, and solar energy efficiency throughout the year, that is, It is possible to improve power generation efficiency + heat recovery efficiency.

[0081]

As described above, according to the present invention, an air flow path portion is continuously formed on at least one of the front and back surfaces of a solar cell module for each of a plurality of solar cell arrays formed of solar cell modules. Since the air is formed and the external air is conducted to the air flow path portion by the conducting means, there is an effect that each solar cell array can be cooled and the power generation efficiency can be improved.

Further, it is composed of a branch duct connected to the air flow path, a main duct to which a plurality of the branch ducts are connected, and a blower provided in the main duct to conduct external air to the air flow path section through the branch duct. The opening and closing of the damper provided on the branch duct by the adjusting means is adjusted so that the amount of external air flowing through each air flow path portion by the connecting means is constant, that is, the opening of each damper is a blower. The shorter the air flow path from, the smaller the damper opening, so the air volume of each solar cell array can be set evenly, the average temperature of each solar cell array becomes uniform, and the voltage of each solar cell array differs. Therefore, it is easy to improve the power generation efficiency and it is possible to improve the solar energy efficiency by recovering heat.

Further, since the diameter of the branch duct is formed so that the conduction amount of the outside air of each air flow path portion by the conduction means is constant, the air flow rate of each solar cell array can be set uniformly and each solar cell array can be set. Has a uniform average temperature, the voltage of each solar cell array does not differ, it is easy to improve the power generation efficiency, and it is possible to improve the solar energy efficiency by heat recovery. is there.

Further, the temperature difference between the temperature of the solar cell module detected by the module temperature detecting means and the outside air temperature detected by the outside air temperature detecting means is determined, and as the temperature difference increases, the blower control means increases the amount of air blown by the blower. Therefore, there is an effect that optimal control is performed with respect to increase and decrease of the amount of solar radiation, and power generation efficiency can be improved throughout the year.

Further, the temperature difference between the temperature of the air in the main duct detected by the air temperature detecting means and the outside air temperature detected by the outside air temperature detecting means is determined, and as the temperature difference increases, the blower control means controls the amount of air blown by the blower. Because it will be bigger
Optimal control is performed for changes in the amount of solar radiation, which has the effect of improving power generation efficiency throughout the year.

Further, the opening degree of each damper is controlled from the deviation between the detection result of the module temperature detecting means provided in each solar cell module and the target module temperature, and the blast pressure detecting means provided in the main duct. Since the amount of air blown by the blower is controlled based on the deviation between the detection result and the target pressure, even if there is a difference in the temperature of each solar cell array, optimum control is performed and the power generation efficiency can be improved throughout the year. There is.

Further, the deviation between the detection result of the air temperature detecting means provided in the main duct and the target set air temperature set by the user is obtained, and the air flow rate of the blower is controlled based on this deviation. Heat recovery, and
This has the effect of improving power generation efficiency throughout the year.

Further, since the heat collecting plate provided between the solar cell array and the branch duct reheats the air collected by the solar cell array, the temperature of heat recovery can be increased, and the heat collecting plate is further provided in the main duct. The deviation between the detection result of the air temperature detection means and the target set air temperature set by the user is calculated, and the air flow rate of the blower is controlled based on this deviation, so that optimal heat recovery is performed, and power generation throughout the year is performed. There is an effect that efficiency can be improved.

Further, since the heat collecting plate provided between the solar cell array and the branch duct reheats the air collected by the solar cell array, the temperature of heat recovery can be increased, and the heat collecting plate is further provided in the branch duct. The deviation between the detection result of the air temperature detection means and the target set air temperature set by the user is obtained, and the opening of the flow rate adjustment damper is adjusted based on this deviation, and the blast pressure detected in the main duct is detected. Since the air flow rate of the blower is controlled from the deviation between the detection result of the means and the target pressure,
Even if there is a difference in temperature between the solar cell arrays, there is an effect that optimum heat recovery is performed and the power generation efficiency can be improved throughout the year.

The air collected by the solar cell array is
Air flow path, branch duct, main duct, blower, heat exchanger,
Since it circulates in the path of the connecting duct, the temperature of heat recovery can be increased, and the air flow rate of the blower is controlled from the deviation between the detection result of the air temperature detection means provided in the heat exchanger and the target set air temperature. There is an effect that optimum heat recovery is performed and the power generation efficiency can be improved throughout the year.

The air collected by the solar cell array is
Furthermore, since it is reheated by the heat collecting plate and circulates in the route of the air flow path section, branch duct, main duct, blower, heat exchanger, and connecting duct, the temperature of heat recovery can be increased, and it is installed in the heat exchanger. Since the amount of air blown by the blower is controlled based on the deviation between the detection result of the air temperature detection means and the target set air temperature, there is an effect that optimum heat recovery can be performed and the power generation efficiency can be improved throughout the year. .

Further, the air collected by the solar cell array is
Air flow path, branch duct, main duct, blower, heat exchanger,
Since it circulates in the path of the connecting duct, the temperature of heat recovery can be raised, and the amount of air blown by the blower is controlled from the deviation between the detection result of the air temperature detection means provided in the heat exchanger and the target set air temperature. When recovery is not required, the switching damper provided in the connection duct performs cooling operation to exhaust the exhaust air from the exhaust duct, so optimal heat recovery is performed, and
This has the effect of improving power generation efficiency throughout the year.

The air collected by the solar cell array is
Reheat with a heat collecting plate, air flow path part, branch duct, main duct,
Since it circulates in the route of the blower, the heat exchanger, and the connecting duct, the temperature of the heat recovery can be increased, and the blown amount of the blower can be determined from the deviation between the detection result of the air temperature detection means installed in the heat exchanger and the target set air temperature. Controlling, and when heat recovery is not required, the switching damper provided in the connection duct performs cooling operation to exhaust the air from the exhaust duct, so optimal heat recovery is performed and the power generation efficiency throughout the year is improved. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a solar cell device showing a first embodiment of the present invention.

FIG. 2 is a temperature characteristic diagram of a solar cell module.

FIG. 3 is a configuration diagram of a solar cell device showing a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a solar cell device showing a third embodiment of the present invention.

FIG. 5 is a configuration diagram of a solar cell device according to a fourth embodiment of the present invention.

FIG. 6 is a configuration diagram of a solar cell device showing a fifth embodiment of the present invention.

FIG. 7 is a configuration diagram of a solar cell device showing a sixth embodiment of the present invention.

FIG. 8 is a configuration diagram of a solar cell device according to a seventh embodiment of the present invention.

FIG. 9 is a configuration diagram of a solar cell device showing an eighth embodiment of the present invention.

FIG. 10 is a configuration diagram of a solar cell device according to a ninth embodiment of the present invention.

FIG. 11 is a configuration diagram of a solar cell device according to a tenth embodiment of the present invention.

FIG. 12 is a configuration diagram of a solar cell device showing an eleventh embodiment of the present invention.

FIG. 13 is a configuration diagram of a conventional solar cell device.

[Explanation of symbols]

1 solar cell module, 2 solar cell array, 3
Cooling duct, 4 chambers, 5 dampers, 6
Branch duct, 7 main duct, 8 blower, 9 outside air intake, 10 exhaust, 11 air flow, 12
Heat collecting plate, 13 heat exchanger, 14 connection duct, 1
5a switching damper, 15b switching damper, 20
Arithmetic processing means, 21 blower control means, 22 module temperature detection means, 23 outside air temperature detection means,
24 damper control means, 25 pressure detection means, 26
Air temperature detecting means, 27 Air temperature detecting means, 28
Air temperature detection means

Claims (13)

[Claims] 1. A plurality of solar cell arrays each composed of a solar cell module, and an air flow path portion continuously formed on at least one of both front and back surfaces of the solar cell module for each of the plurality of solar cell arrays. A solar cell device, comprising: a conducting means that is connected to the air flow path portion and conducts external air. 2. A plurality of solar cell arrays each composed of a solar cell module, and an air flow path section continuously formed on at least one of both front and back surfaces of the solar cell module for each of the plurality of solar cell arrays. A branch duct connected to the air flow path portion, a main duct to which a plurality of the branch ducts are connected, and a blower provided in the main duct to conduct external air to the air flow path portion through the branch duct A conducting means; and a regulating means for providing a damper on the branch duct, and adjusting the opening and closing of the damper so that the conducting amount of the outside air in each of the air flow passages by the conducting means is adjusted to be constant. Characteristic solar cell device. 3. A plurality of solar cell arrays each composed of a solar cell module, and an air flow path portion continuously formed on at least one of both front and back surfaces of the solar cell module for each of the plurality of solar cell arrays. A branch duct connected to the air flow path portion, a main duct to which a plurality of the branch ducts are connected, and a blower provided in the main duct to conduct external air to the air flow path portion through the branch duct A solar cell device, comprising: a conducting means, wherein the branch duct diameter is formed so that a conducting amount of the outside air in each of the air flow passage portions by the conducting means is constant. 4. The module temperature detecting means provided in the solar cell module for detecting the temperature of the solar cell module, the outside air temperature detecting means for detecting the outside air temperature, and the module temperature detecting means for detecting the temperature of the solar cell module. While obtaining the temperature difference between the temperature and the outside air temperature by the outside air temperature detecting means, the greater this temperature difference,
7. An arithmetic processing unit that sets a large amount of air blown by the blower, and a blower control unit that controls the amount of air blown by the blower based on the calculation result of the amount of air blown by the arithmetic processing unit. The solar cell device according to claim 2 or claim 3. 5. An air temperature detecting means provided in the main duct for detecting a temperature of air in the main duct, an outside air temperature detecting means for detecting an outside air temperature, and the main duct by the air temperature detecting means. The temperature difference between the temperature of the inside air and the outside air temperature detected by the outside air temperature detecting means is calculated, and the larger the temperature difference is, the larger the amount of air blown by the blower is set. 4. A solar cell device according to claim 2 or 3, further comprising: a blower control unit that controls an amount of air blown by the blower based on a calculation result of the amount of air blower. 6. The solar cell module is provided in each of the
Module temperature detecting means for detecting the temperature of the solar cell module, blast pressure detecting means provided in the main duct for detecting blast pressure in the main duct, and the solar cell module by the module temperature detecting means The opening of each damper is obtained from the deviation between the temperature and the preset target module temperature, and the blower pressure of the blower is determined from the deviation between the blowing pressure in the main duct by the blowing pressure detection means and the preset target pressure. Arithmetic processing means for obtaining the blown air volume, damper control means for controlling the opening degree of each damper based on the opening degree of each damper by this arithmetic processing means, and blowing of the blower based on the air blown amount by the arithmetic processing means The solar cell device according to claim 2, further comprising: a blower control unit that controls an air volume. 7. An air temperature detecting means provided in the main duct for detecting the temperature of the air in the main duct, and the temperature of the air in the main duct by the air temperature detecting means and a preset target. An arithmetic processing unit that determines a deviation from the set air temperature and sets the air flow rate of the blower based on the deviation, and a blower control that controls the air flow rate of the blower based on the calculation result of the air flow rate by the arithmetic processing unit The solar cell device according to claim 2 or 3, further comprising: 8. A heat collecting plate that is provided between the solar cell array and the branch duct to reheat air collected by the solar cell array; and a heat collecting plate that is provided in the main duct and is reheated by the heat collecting plate. An air temperature detecting means for detecting the temperature of the heated air in the main duct, and a deviation between the temperature of the air in the main duct by the air temperature detecting means and a preset target air temperature, And a blower control means for controlling the blow rate of the blower based on the calculation result of the blow rate by the calculation processing means. The solar cell device according to claim 2 or 3. 9. A heat collecting plate, which is provided between the solar cell array and the branch duct and reheats air collected by the solar cell array, and a heat collecting plate, which is provided in the branch duct and is reheated by the heat collecting plate. The air temperature detecting means for detecting the temperature of the heated air in the branch duct, the blast pressure detecting means provided in the main duct for detecting the blast pressure in the main duct, and the air temperature detecting means. The opening of each damper is obtained from the deviation between the temperature of the air in the branch duct and the preset target air temperature, and the blowing pressure in the main duct is preset by the blowing pressure detection means. Arithmetic processing means for obtaining the air flow rate of the blower from the deviation from the target pressure; and damper control means for controlling the opening degree of each damper based on the calculation result of the opening degree of each damper by the arithmetic processing means. It said processing means by the air supply amount of computation and blower control means for controlling the air volume of the blower based on the result, the solar cell apparatus according to claim 2, further comprising a. 10. A connection duct, one end of which is connected to the air flow path portion and the other end of which is connected to the blower, a heat exchanger provided in the connection duct, the air flow path portion, the branch duct, An air circulation path formed from the main duct, the blower, and the connection duct; and an air temperature detection unit that is provided in the heat exchanger and that detects an air temperature in the connection duct in the air circulation path, Air temperature temperature detecting means obtains a deviation between the air temperature in the connecting duct and a preset target air temperature, and arithmetic processing means for setting the air flow rate of the blower based on the deviation, and the arithmetic processing means. 4. The solar cell device according to claim 2 or 3, further comprising: a blower control unit that controls a blown amount of the blower based on a calculated result of the blown amount. 11. A heat collecting plate which is provided between the solar cell array and the branch duct and reheats air collected by the solar cell array; one end of which is connected to the air flow path portion; A connection duct that connects the blower, a heat exchanger provided in the connection duct, and the air flow path portion, the heat collecting plate, the branch duct, the main duct, the blower, and the connection duct. An air circulation path, an air temperature detection means provided in the heat exchanger for detecting an air temperature in the connection duct in the air circulation path, and an air temperature in the connection duct by the air temperature temperature detection means. A calculation processing means for obtaining a deviation from a preset target set air temperature and setting the air flow rate of the blower based on this deviation, and the air flow rate based on the calculation result of the air flow rate by the calculation processing means. The solar cell device according to claim 2 or 3, further comprising: a blower control unit that controls an amount of air blown by the blower. 12. An air flow passage portion is provided at a connection portion between a connection duct having one end connected to the air flow passage portion and the other end connected to the blower, and a connection portion of the connection duct with the air flow passage portion. A first switching damper that switches air flowing into the connection duct or from the outside, and is provided in a connection portion of the connection duct with the blower,
A second switching damper for switching the air flowing out of the blower to the connection duct or the outside; a heat exchanger provided in the connection duct between the first switching damper and the second switching damper; and the air flow. An air circulation path formed of a road portion, the branch duct, the main duct, the blower, and the connection duct; and an air temperature inside the connection duct in the air circulation path, which is provided in the heat exchanger. An air temperature detecting means, and an arithmetic processing means for obtaining a deviation between the air temperature in the connecting duct and a preset target air temperature set by the air temperature detecting means, and for setting an air blowing amount of the blower based on the deviation. And a blower control means for controlling the blow rate of the blower based on the calculation result of the blow rate by the calculation processing means. Solar cell apparatus of claim 2 or claim 3, wherein. 13. An air flow path portion, the connection duct having one end connected to the air flow path portion and the other end connected to the blower, and a connection portion between the connection duct and the air flow path portion. A first switching damper that switches air flowing into the connection duct or from the outside, and is provided in a connection portion of the connection duct with the blower,
A second switching damper for switching the air flowing out of the blower to the connection duct or to the outside; a heat exchanger provided in the connection duct between the first switching damper and the second switching damper; and the solar cell A heat collecting plate provided between the array and the branch duct to reheat the air collected by the solar cell array, the air flow path portion, the heat collecting plate, the branch duct, the main duct, the blower, An air circulation path formed from the connection duct; an air temperature detection means provided in the heat exchanger for detecting an air temperature in the connection duct in the air circulation path; An arithmetic processing unit that obtains a deviation between the air temperature in the connection duct and a preset target set air temperature, and sets the air flow rate of the blower based on the deviation, Processing means by the air supply amount of the operation result solar cell apparatus of claim 2 or claim 3, wherein further comprising a, a blower control means for controlling the air volume of the blower based on.