JP2003161533A - Solar light and heat hybrid module - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solar light and heat hybrid module which uses the same frame as a solar battery module and improves the productivity and workability. <P>SOLUTION: In this solar light and heat hybrid module M1, two or more water passing pipes 21 (heat medium pipes) are arranged along the backside of a solar battery panel 10, and the end parts on the same side of the water passing pipes 21 are mutually connected through a header pipe 22. The header pipe 22 is arranged on the backside of the solar battery panel 10 on the inside of a peripheral frame 30. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical / thermal hybrid module that uses solar energy to both generate electricity and collect heat.

[0002]

2. Description of the Related Art For example, a solar / thermal hybrid module described in Japanese Patent Laid-Open No. 11-256787 has a quadrangular solar cell panel and a heat collector. The heat collector has a plurality of heat medium tubes arranged along the back surface of the solar cell panel, and a heat collector plate attached to these heat medium tubes. Both ends of each heat transfer medium pipe are projected outward from the edge of the solar cell panel, and these protruding ends are connected by a header pipe orthogonal to the heat transfer medium pipe.

[0003]

In the hybrid module disclosed in the above publication, a support frame similar to a solar cell module (a module having only a solar cell panel but no collector) is provided at the edge on the side parallel to the heat medium tube. Can be used.
However, since the header tube is arranged outside the solar cell panel at the edge orthogonal to the heat medium tube, it is necessary to form a frame that covers the header tube. Therefore, the same thing as a solar cell module cannot be used, and productivity and workability are not sufficient.

[0004]

In order to solve the above problems, the present invention is directed to a solar cell panel whose peripheral edge is supported by a frame, and a plurality of heat generators arranged along the back surface of the solar cell panel. In a solar-heat hybrid module including a medium pipe and a pair of header pipes that connect end portions on the same side of these heat medium pipes, each header pipe is
It is characterized in that it is arranged on the back surface of the solar cell panel inside the frame.

Here, a heat collecting plate is attached to the heat medium pipe,
Further, it is desirable that a heat collecting plate is also attached to the header pipe. The heat collecting plate is formed such that a housing groove for the heat medium tube and the header tube is recessed to the back side, and a flat portion of the heat collecting plate excluding the housing groove is bonded to the solar cell panel, and It is desirable that the edge of the heat collecting plate is supported by the frame together with the solar cell panel.

The heat collecting plate is divided into at least three along the tube axis direction of the heat medium pipe, and the heat collecting plates at both ends are
Instead of the accommodation groove for the header tube, a slit (cut) that is in line with the accommodation groove for the heat medium tube is formed, and the heat medium tube is attached when the end heat collecting plate is attached. May be housed in the housing groove while being passed through the slit, and at the same time as or after the housing operation, the end heat collecting plate may be slid in the end direction and positioned on the front side of the header pipe. .

The tube axes of the heat transfer medium pipe and the header pipe may be arranged substantially on the same plane, and the heat transfer medium pipe is thinner than the header pipe, and the solar cell panel side is correspondingly thinner. It may be eccentric. When eccentric,
It is desirable that the end portion of the heat transfer medium pipe be obliquely bent toward the pipe axis of the header pipe.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 shows a building 1 to which the first embodiment of the present invention is applied. A solar energy conversion system 2 is built on the roof of the building 1.
The system 2 includes a plurality of solar cell modules M0 and a plurality of solar / thermal hybrid modules M1.

These modules M0 and M1 also serve as a roofing material for the building 1, and are installed on the base plate 1a (FIG. 3) along the horizontal direction and the water flow direction of the roof. The solar / thermal hybrid module M1 according to the gist of the present invention is collected in, for example, the lower right region of the roof,
The other area is occupied by the solar cell module M0.

As shown in FIG. 3, the solar-heat hybrid module M1 has a solar cell panel 10, a heat collector 20 provided on the back side of the panel 10, and a frame 30 provided on the periphery. is doing. (Note that the solar cell module M0 is the solar cell panel 10 having the same configuration as described above.
And a frame 30, but no heat collector 20. )

As shown in FIGS. 1 and 3, a solar battery panel 10 includes a rectangular transparent two-layer glass plate 12 and a large number of solar battery cells 1 vertically and horizontally arranged on the back side thereof.
1 and. A space for heat insulation is formed by the spacer 15 between the two layers of glass plates 12 and 13.

Although not shown in detail, the solar cell 1
1 is sandwiched and sealed by a front adhesive layer made of an ethylene vinyl acetate (EVA) resin sheet and a back adhesive layer made of an EVA resin sheet. The glass plate 13 is bonded to the front adhesive layer, and the heat collecting plate 23 of the heat collector 20 is bonded to the back adhesive layer. (Note that the back adhesive layer of the solar cell module M0 is provided with a back film material 14 in which resin sheets are attached to both surfaces of a conductive metal plate such as aluminum, instead of the heat collecting plate 23.)

The solar battery cells 11 generate electricity by sunlight. Then, as shown in FIG. 2, the DC output of the cells 11 of the entire system 2 is taken out by the positive output cable 4a and the negative output cable 4b, converted into AC by the power conditioner 4c, and then supplied to the electric equipment of the building 1. Are sold or sold to others.

As shown in FIGS. 2 to 4, the heat collector 20 is
A plurality of water pipes 21 (heat transfer pipes) extending in the water flow direction of the roof
And a pair of header pipes 22 provided at the upper and lower ends of the water flow pipes 21 and the heat collecting plates 23 attached to the pipes 21 and 22. As shown in FIG. 1, the plurality of water pipes 21 are arranged at the same pitch as the solar cells 11 and are separated from each other on the left and right, and pass through the middle of the cells 11 when the module M1 is viewed in a plan view. As a result, it is possible to efficiently receive the heat generated from the cells 11 due to the solar power generation.

As shown in FIGS. 3 and 4, the header tube 22
Has a larger diameter than the water pipe 21. And, it extends rightward and leftward at right angles to the water pipe 21. Water pipe insertion holes 22 a are formed in the wall of the header pipe 22 as many as the water pipes 21. The ends of the water flow pipe 21 are inserted into these holes 22a and brazed. As a result, the upper end portions of all the water passage pipes 21 in the heat collector 20 are connected to each other by the upper header pipe 22, and the lower end portions are connected to each other by the lower header pipe 22. Pipe axes of the water passage pipe 21 and the header pipe 22 are arranged on the same plane.

As shown in FIG. 2, the header tube 22 of the solar / thermal hybrid module M1 adjacent to each other on the roof.
, One of the header pipes 22 on the side of the eaves is connected to the lower part of the hot water storage tank 5a via the outward pipe 5c, and the other header pipe 22 is connected to the hot water storage tank via the return pipe 5d. It is connected to the upper part of 5a. As a result, the water for hot water supply (heat medium) supplied from the water supply pipe 5b to the hot water storage tank 5a
However, the pipes 21 and 22 of each module M1 are passed through the outward pipe 5c.
After that, it is returned to the hot water storage tank 5a through the return pipe 5d.

As shown in FIGS. 3 to 5, the heat collecting plate 23 is
It is composed of a rectangular aluminum plate. The heat collecting plate 2
The material of 3 may be a material having a good heat transfer property, and a copper plate or the like may be used instead of the aluminum plate. On the heat collecting plate 23,
An accommodating groove 23a for accommodating the water pipe 21 and the header pipe 22 is formed by pressing so as to be recessed on the back side. The groove forming portion of the heat collecting plate 23 is crimped after the tubes 21 and 22 are accommodated. As a result, the heat collecting plate 23 and the tubes 21, 2
And 2 are fixed together. The flat part of the heat collecting plate 23 excluding the groove 23a is bonded to the back side adhesive layer of the solar cell panel 10. In this state, the header tube 2
Both ends of 2 project from the left and right edges of the heat collecting plate 23, while the upper and lower edges of the heat collecting plate 23 extend from the header tube 22 and reach the vicinity of the upper and lower edges of the solar cell panel 10.

The heat collecting plate 23 absorbs sunlight that has passed through the solar cell panel 10 to generate heat. Also, it absorbs the heat generated in the solar battery cells 11. These heats are transferred to the tubes 21,
It is transmitted to the pipe 22, and is further delivered to the hot water for hot water flowing in the pipes 21 and 22. As a result, the hot water can be heated and stored in the hot water storage tank 5a. And, it can be used for hot water supply via the hot water supply pipe 5e extending from the hot water storage tank 5a.

As shown in FIG. 1, the frame 30 includes a pair of vertical frame members 31 that support the left and right edges of the solar cell panel 10 and the heat collector 20, and a pair of horizontal frame members 32 that support the upper and lower edges. And have. These frame materials 3
Reference numerals 1 and 32 are made of extruded aluminum material or the like. Although detailed illustration is omitted, each frame member 31, 32
The intersections of are connected by screws.

As shown in FIG. 3, the horizontal frame member 32 is provided with grooves 32a into which the upper and lower edges of the solar cell panel 10 and the heat collecting plate 23 are fitted. In this fitted state, the solar cell panel 10 inside the horizontal frame member 32
The header tube 22 is arranged on the back surface of the.
Between the groove 32a of the horizontal frame member 32 and the solar cell panel 10 and the heat collecting plate 23, a sealing material 3 made of butyl tape is provided.
9 is loaded.

Although not shown, a groove for fitting the left and right edges of the solar cell panel 10 and the heat collecting plate 23 is also formed in the vertical frame member 31 in the same manner. The groove, the panel 10 and the plate 2 are also formed.
3, and a sealant made of butyl tape is loaded between the two. As shown in FIG. 1, at the lower edge of the vertical frame member 31,
A flange 33 is provided. This flange 33
The roof plate 1a of the roof is fixed with a screw so that the module M1 is fixed to the roof. Further, the end portion of the header pipe 22 projects from the vertical frame member 31. This projecting end will be connected to the header pipe 22 or the outward pipe 5c or the return pipe 5d of another adjacent module M1.

The operation will be described. In the solar-heat hybrid module M1, the header tube 22 is arranged on the back surface of the solar cell panel 10 inside the horizontal frame member 32. Therefore, the horizontal frame member 32 having the same standard as that of the solar cell module M0 can be used, and each constituent member including the horizontal frame member 32 can be used as the solar cell module M0.
Can be shared with 0. As a result, it is possible to improve productivity and reduce production cost. Further, since the external shape and dimensions of the solar / thermal hybrid module M1 can be made the same as those of the solar cell module M0,
As shown in FIG. 2, these modules M0 and M1 can be juxtaposed in an orderly manner without a step, which not only improves the aesthetic appearance but also improves the workability and shortens the construction time.

Since it is not necessary to divide the edges of the solar cell panel 10 and the heat collecting plate 23 into two so as to sandwich them from the front side and the back side, not only the vertical frame member 31 but also the horizontal frame member 32 should be integrated. Therefore, the number of parts can be reduced.

Since the heat collecting plate 23 is attached not only to the water passage pipe 21 but also to the header pipe 22, it is possible to heat the hot water for hot water supply in the header pipe 22 as well, thereby improving the heating efficiency (heat collecting efficiency). Can be increased.

Next, another embodiment of the present invention will be described.
In the following embodiments, the same components as those of the previously described embodiments are designated by the same reference numerals and the description thereof will be omitted. FIG. 6 shows the solar light according to the second embodiment of the present invention.
3 shows a thermal hybrid module M2. In the hybrid module M2, the water flow pipe 21 is eccentric to the solar cell panel 10 side by the amount thinner than the header pipe 22. As a result, the water flow pipe 21 can be brought as close as possible to the solar cell panel 10 as with the header pipe 22, or can be brought into contact therewith. As a result, the heat transfer from the solar battery cells 11 to the water passage 21 can be performed more favorably, and the heating efficiency of the hot water for hot water supply can be further enhanced.

FIG. 7 shows a solar / thermal hybrid module M3 according to a third embodiment of the present invention. In the hybrid module M3, similar to the hybrid module M2 of the second embodiment, the water pipe 21
Is eccentric to the solar cell panel 10 side by an amount smaller than the header tube 22. The difference from the module M2 is that the end of the water pipe 21 is bent obliquely toward the rear side toward the pipe axis of the header pipe 22. As a result, it is possible to facilitate the opening and closing work of the water passage pipe insertion hole 22a and the brazing work of the water passage pipe 21.

8 to 10 show a fourth embodiment of the present invention. As shown in FIG. 8 and FIG. 9, in the solar / thermal hybrid module M4 according to the fourth embodiment, the heat collecting plate of the heat collector 20 ′ has heat collecting members at both ends along the tube axis of the water pipe 21. The plate 23X and the intermediate heat collecting plate 23Y are divided into three parts. The header tube 22 is attached to the end heat collecting plate 23X.
Instead of the accommodation groove for the water, the accommodation groove 23a for the water pipe 21
Slits 23b (cuts) are formed so as to form a straight line. The slit 23b reaches the edge of the end heat collecting plate 23X on the opposite side of the water pipe containing groove 23a.

As shown in FIG. 8, the assembled tubes 21, 2 are assembled.
When the heat collecting plates 23X and 23Y are additionally provided on the second pipe 2, first, the water pipe 21 is passed through the slit 23b of the one end heat collecting plate 23X. As a result, the water pipe 21 is connected to the groove 23 of the heat collecting plate 23X.
can be accommodated in a. Simultaneously with or after this accommodation operation, the end heat collecting plate 23X is slid in the end direction along the water pipe 21. As a result, as shown in FIG. 9, the end heat collecting plate 23X can be located on the front side of the header pipe 22.

Similarly, the other end heat collecting plate 23X is additionally provided. In addition, the intermediate heat collecting plate 23C is provided at both ends
It is attached so that it is inserted between X. Then, the heat collecting plates 23X and 23Y are caulked on the water pipe 21 to collect the heat.
Complete 0 '. This heat collector 20 'is bonded to the back side adhesive layer of the solar cell panel 10. As a result, as shown in FIG. 10, the end heat collecting plate 23X is sandwiched between the solar cell panel 10 and the header tube 22.

In the heat collector 20 'of the fourth embodiment,
Similar to the first embodiment, the pipe axes of the pipes 21 and 22 are arranged on the same plane, but instead of this, the second,
The same tubes 21 and 22 as in the third embodiment may be used. The intermediate heat collecting plate 23Y may be further divided into a plurality of pieces.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above-described embodiment, the hot water for hot water supply is directly passed through the heat collector as a heat medium for direct heating, but a heat medium such as brine, which is separate from the hot water for hot water supply, is passed through the heat collector, and the heat medium is The solar heat collected by the heat collector may be provided to the hot water for hot water supply in the hot water storage tank via the heat exchanger. The solar heat collected by the solar / heat hybrid module can be used for purposes other than hot water supply, such as heating.

[0032]

As described above, the sunlight of the present invention
According to the thermal hybrid module, since the header tube is arranged on the back surface of the solar cell panel inside the frame, the same frame as the solar cell module can be used, and productivity and workability can be improved. .

By installing the heat collecting plate not only on the heat medium pipe but also on the header pipe, heat can be collected not only in the header pipe, but also in the heat collecting efficiency.

By accommodating the heat medium pipe and the header pipe in the accommodating groove of the heat collecting plate, adhering the heat collecting plate to the solar cell panel, and supporting the edge of the heat collecting plate together with the solar cell panel by the frame, the heat collecting is carried out. The heat medium pipe and the header pipe can be reliably supported through the plate.

By dividing the heat collecting plate and forming slits in the heat collecting plates at both ends, the heat medium pipes can be accommodated in the accommodating grooves while passing through the slits, and the end heat collecting plates serve as solar panels. It can be sandwiched between the header tubes.

By arranging the pipe axes of the heat medium pipe and the header pipe on substantially the same plane, the pipes can be easily connected to each other.

The heat collection efficiency can be further enhanced by making the heat transfer medium tube eccentric to the side of the solar cell panel by an amount smaller than that of the header tube. In this case, the ends of the heat medium tubes are bent obliquely toward the tube axis of the header tube, so that the tubes can be easily connected to each other.

[Brief description of drawings]

FIG. 1 is a perspective view of a solar / thermal hybrid module according to a first embodiment of the present invention.

FIG. 2 is a schematic view of a building equipped with a solar energy conversion system including the solar / thermal hybrid module.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is an exploded perspective view of a heat collector of the solar / thermal hybrid module.

FIG. 5 is a perspective view of the heat collector as viewed from the back side.

FIG. 6 is a sectional view of a solar / thermal hybrid module according to a second embodiment of the present invention.

FIG. 7 is a sectional view of a solar / thermal hybrid module according to a third embodiment of the present invention.

FIG. 8 is an exploded perspective view of a heat collector of a solar / thermal hybrid module according to a fourth embodiment of the present invention.

FIG. 9 is a perspective view showing a heat collector according to the fourth embodiment in an assembled state.

FIG. 10 is a cross-sectional view of the solar / thermal hybrid module according to the fourth embodiment.

[Explanation of symbols]

M1-M4 Solar / thermal hybrid module 10 solar panel 11 solar cells 20, 20 'heat collector 21 Water pipe (heat transfer pipe) 22 header tube 23 Heat collecting plate 23X Edge heat collecting plate 23Y Intermediate heat collecting plate 23a accommodation groove 23b slit 30 frames 31 Vertical frame material 32 Horizontal frame material

Claims (7)

[Claims] 1. A solar cell panel whose peripheral edge is supported by a frame, a plurality of heat transfer tubes arranged along the back surface of the solar cell panel, and end portions of these heat transfer tubes on the same side. In the solar / thermal hybrid module including a pair of header tubes that connect the header tubes, each header tube is
A solar / thermal hybrid module, which is arranged on the back surface of a solar cell panel inside the frame. 2. The solar / thermal hybrid according to claim 1, wherein a heat collecting plate is attached to the heat medium pipe, and a heat collecting plate is also attached to the header pipe. module. 3. The heat collecting plate is formed with an accommodation groove for the heat medium tube and the header tube so as to be recessed on the back side, and a flat portion of the heat collecting plate excluding the accommodation groove is the solar cell panel. The solar / thermal hybrid module according to claim 2, wherein the solar cell / heat hybrid plate is adhered to the substrate, and the edge of the heat collecting plate is supported by the frame together with the solar cell panel. 4. The heat collecting plate is divided into at least three along the pipe axial direction of the heat medium pipe, and the heat collecting plates at both ends are replaced with accommodating grooves for the header pipe. A slit is formed which is in line with the accommodation groove for the heat medium pipe, and when the end heat collecting plate is attached, the heat medium pipe is accommodated in the accommodation groove while being passed through the slit. At the same time as or after this housing operation, the end heat collecting plate is slid in the end direction so as to be positioned on the front side of the header tube.
Thermal hybrid module. 5. The solar / thermal hybrid module according to claim 1, wherein the heating medium tubes and the header tubes have their tube axes arranged substantially on the same plane. . 6. The heat transfer medium pipe is thinner than the header pipe,
The solar / thermal hybrid module according to claim 1, wherein the solar / thermal hybrid module is eccentric to the side of the solar cell panel by that amount. 7. The solar / thermal hybrid module according to claim 6, wherein an end portion of the heat medium pipe is bent obliquely toward a pipe axis of the header pipe.