JPH0141101Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a combined light/thermal collector that collects thermal energy with a heat collector and at the same time collects electrical energy with a solar cell.

<Prior Art> The conventional art will be explained with respect to a flat collector.

Generally, a combined light/thermal collector is a flat type collector, as shown in Fig. 1, in which a solar cell 1 is connected to a heat collecting fin 2.
It has the same structure as a conventional heat collector, except that it is pasted on top. That is, the collector includes the outer frame 4,
A heat collecting box is constituted by the bottom plate 3 and the transparent body 5, and a plurality of heat collecting fins 2 are arranged inside the box, and a heat insulating material 6 is laid under the heat collecting fins 2. The heat medium (e.g. water, antifreeze) flows inside the heat collector to the lower header 7.
a, heat medium pipe 8, and upper header 7b, it is heated by solar heat.

Incidentally, the combined light/thermal collector is designed to effectively utilize solar energy not only as thermal energy but also as electrical energy. Its basic structure is that a solar cell 2 is thermally attached on a heat collecting fin 2, and the obtained electrical output is sent to a terminal 9 provided on a heat collector outer frame 4.
It has many advantages, such as increasing the electrical conversion efficiency by cooling the solar cells and improving heat collection efficiency, as well as a synergistic effect of light and heat, as well as reducing the installation space of the collector. ing.

However, as shown in Fig. 2, in the conventional collector, an adhesive 10, an insulating plate 11, an adhesive 10, and a solar cell 1 are laminated on a heat collecting fin 2 with a heat medium pipe 8 provided on the back surface, and the entire structure is It has a complicated structure in which a transparent resin film 12 is coated to cover the layers and improve durability. This is because a metal such as aluminum or copper treated with a selective absorption film is used as the heat collecting fin 2, and since this heat collecting fin 2 is a good thermal conductor and a good electrical conductor, it can be easily connected to the solar cell 1 to collect heat. This is because the insulating plate 11 must be interposed between the solar cells 1 and the fins 2 to insulate each solar cell 1 and connect them in series.

Therefore, the conventional laminated structure has a complicated structure, which is very difficult to manufacture and increases the cost of the collector. Due to the presence of the insulating plate 11 and the adhesive 10, the transmission of heat generated in the solar cell 1 to the heat collection fins 2 is inhibited, resulting in a decrease in heat collection efficiency, a decrease in the photoelectric conversion efficiency of the solar cell 2,
Furthermore, there was a fear that deterioration and damage to the solar cells could not be avoided.

<Purpose> The present invention was developed in view of the above points, and provides a combined light/thermal collector that simplifies the configuration of a solar cell unit and efficiently transfers heat generated by solar cells to heat collection fins. The purpose is to provide

<Example> Embodiments of the present invention will be described below with reference to the drawings.

Fig. 3 is a perspective view of the embodiment of the present invention, and Fig. 4 is a perspective view of the embodiment of the present invention.
It is a sectional view taken along line XX in the figure. 3 and 4, 13 is a heat collector, and this heat collector 1
3 consists of a heat medium pipe 14 through which a heat medium flows and a heat collecting fin 15 disposed on the upper surface of the heat medium pipe 14. The heat collecting fins 15 are made of a highly thermally conductive insulator such as ceramic, and are divided into appropriate sizes so that adjacent fins 15 have a certain gap between them as shown in FIG. It is fixed. Incidentally, a selective absorption film is formed on at least the upper surface side of the heat collecting fin 15. Reference numeral 16 denotes a solar cell, and this solar cell 16 is attached to the upper surface of each divided heat collecting fin 15 via a thermally conductive adhesive 17 as shown in FIG. By coating the transparent resin 18 so as to cover the solar cell 16, the solar cell 16 is thermally disposed on the heat collecting fin 15. This adjacent solar cell 18
are connected in series, and the power generated by the solar cells 16 is recovered through terminals (not shown). The other configurations are the same as before.

Therefore, since the heat collecting fins 15 are made of a highly thermally conductive insulator such as ceramic, an insulating plate is interposed between the solar cells 16 and the heat collecting fins 15 in order to insulate the adjacent solar cells 16. The stacked structure of the solar cell 16 can be simplified, and the heat generated by the solar cell 16 can be efficiently transmitted to the heat collecting fins 15. In addition, the heat medium pipe 14
Even if a copper pipe or the like is used as a heat exchanger, the heat collection fins 15 are divided with a certain gap and fixed to the heat medium pipe 14, so there is no difference in the coefficient of thermal expansion between the heat medium pipe 14 and the heat collection fin 15. Even if distortion occurs from the heat collecting fins 15, this distortion is absorbed by the gaps between the heat collecting fins 15.
prevent deformation and damage.

In the embodiment of the present invention, a case was explained in which one solar cell was placed on each of the divided heat collecting fins, but in order to obtain high voltage, multiple solar cells may be placed on each heat collecting fin. In addition, although the case where the solar cells arranged on each heat collecting fin are connected in series has been described, parallel connections may be appropriately combined in order to obtain the necessary output. That is, the number of solar cells, the connection method, and the type of solar cells are selected so that the required output or amount of heat can be obtained. Furthermore, although a flat plate type collector has been described, any suitable type such as a vacuum glass type or the like may be adopted, or an appropriate type such as a water circulation type or a heat pipe type may be adopted.

<Effects> According to the present invention, the heat collecting fins are made of a highly thermally conductive insulator such as ceramic, and the solar cells are thermally disposed on this highly thermally conductive insulator, so that the solar cells and the heat collecting There is no need to interpose an insulator between the solar cell and the fins, which simplifies the stacked structure of the solar cell and simplifies the structure of the collector. In addition, since we have eliminated the insulator that hinders heat conduction from the solar cells to the heat collection fins, we can efficiently collect solar heat and
Decrease in photoelectric conversion efficiency can be prevented. In addition, in the case of the present invention, the heat collecting fins made of a highly thermally conductive insulator such as ceramics are divided into multiple parts and the fins are arranged at appropriate intervals. Even if there is a difference in the coefficient of thermal expansion between the heat transfer pipe and the heat collection fin due to the structure,
The spacing between the fins can prevent damage to the fins.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a typical combined light/thermal collector, FIG. 2 is a partial sectional view of FIG. 1, showing a conventional example, and FIG. 3 is a portion of FIG. 1. FIG. 4, which is a perspective view and shows the present embodiment, is a perspective view of the X in FIG.
-X sectional view. 13... Heat collector, 14... Heat medium pipe, 15... Heat collection fin, 16... Solar cell.

Claims (1)

[Claims for Utility Model Registration] 1. A collector equipped with a heat collector consisting of a heat transfer pipe and a heat collection fin thermally attached to the heat transfer pipe, wherein the heat collection fin is made of a highly thermally conductive insulator. A combined light/heat collector is constructed by dividing the heat collecting fins into a plurality of pieces, arranging each fin at appropriate intervals, and thermally disposing solar cells on the divided fins. 2. Utility model registration claim 1, characterized in that the high thermal conductivity insulator is ceramic.
Combined light/thermal collector described in section.