JP2024020111A - Solar power generation/solar heat collection module - Google Patents

Abstract

[Problem] To provide an integrated photovoltaic power generation/solar heat collection module that can efficiently use solar energy as both electricity and heat. [Solution] A thin photovoltaic power generation panel is incorporated into an insulated housing consisting of an insulating transparent glass on the sunlight side, a thin insulating panel on the back side, and an insulating frame around the periphery, and an integrated photovoltaic power generation/solar heat collection module is constructed that can efficiently use solar energy as electricity and heat by generating electricity from sunlight and collecting unused heat generated mainly by infrared rays inside the insulated housing using heat pipes with high thermal conductivity, and collecting heat generated on the surface of the thin photovoltaic power generation panel using gas convection, and exchanging heat with a heat medium in a heat exchange pipe. [Selected Figure] Figure 1

Description

The present invention relates to a solar power generation/solar heat collection module that utilizes solar energy as electricity and heat with high efficiency.

Solar energy is mainly used as electricity from photovoltaic panels and heat from solar collectors. Generally used photovoltaic panels do not effectively utilize the heat generated by sunlight, mainly infrared rays.
In most cases, solar energy is used for both electricity and heating, and installing separate equipment has many problems such as installation location, equipment costs, construction costs, and management.

The challenge is to construct an integrated solar power generation/solar heat collection module that can use solar energy as both electricity and heat with high efficiency.

In order to achieve the above goals, the present invention incorporates a thin photovoltaic power generation panel into an insulating casing consisting of an insulating transparent glass on the sunlight side, a thin insulating panel on the back side, and an insulating frame around the outer periphery. Power generation and the unused heat generated by sunlight, mainly infrared rays, inside the insulated casing is collected using heat pipes with high thermal conductivity and gas convection, and is exchanged with a heat medium using heat exchange pipes. , we will build a solar power generation/solar heat collection module that can use solar energy as electricity and heat with high efficiency.

Since solar power generation and heat collection are integrated, electricity and heat can be used efficiently and effectively, and there are fewer problems with installation locations, equipment costs, construction costs, management, etc.
Since the heat is collected within the insulated casing, there is less heat radiation to the outside and less influence from outside air such as cold air, maintaining high heat collection efficiency. Heat collection also suppresses the temperature rise of thin solar panels, improving power generation efficiency and lifespan.

Front view of solar heat collection/photovoltaic power generation module. A-A/A'-A' cross-sectional view of the solar heat collection/photovoltaic power generation module. B-B/B'-B' cross-sectional view of the solar heat collection/photovoltaic power generation module. CC sectional view of solar heat collection/photovoltaic power generation module. DD cross-sectional view of the solar heat collection/photovoltaic power generation module. Slanted view of insulating transparent glass. Slanted view of a thin insulation panel. A tilted view of a thin photovoltaic panel. An inclined view of the heat pipe and heat exchange pipe section. BB sectional view of solar heat collection/photovoltaic power generation module. Heat exchange pipe outline drawing. Slanted view of a thin solar heat collection panel.

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows the front view of the present invention, and FIGS. 2 to 5 show cross sections. On the sunlight side, chips with an outer diameter of 0.5 mm and a thickness of 0.2 mm are arranged on the entire surface at a pitch of about 20 mm between two pieces of heat-resistant tempered transparent glass 1 shown in FIG. 6, for example, 3 mm thick. Vacuum insulated transparent glass with an extremely small gap of 0.2mm and the outer periphery sealed with sealing material. On the back side, there is a thin heat insulating panel 2 shown in FIG. 7, for example, chips with an outer diameter of 0.5 mm and a thickness of 0.2 mm are arranged on the entire surface at a pitch of about 20 mm between two thin aluminum plates with a thickness of 1 mm. A thin vacuum insulation panel is placed with a very small gap and the outer periphery is sealed with a sealing material.

As shown in FIG. 1, the outer periphery is a heat insulating frame 3, for example, an aluminum/resin composite heat insulating frame having rigidity and heat insulating properties. For waterproofing, a rubber packing 3b is inserted between the heat insulating frame 3, the insulating transparent glass 1, and the thin heat insulating panel 2 to form a heat insulating casing.

As shown in FIGS. 2 to 5, a thin photovoltaic panel 4 shown in FIG. 8 is incorporated into a heat insulating casing, and a convection gap is provided between the sunlight side of the thin photovoltaic panel 4 and the insulating transparent glass 1. . The thin photovoltaic panel 4 is placed so as not to contact the heat insulating transparent glass 1. Spacers 3a are inserted between the upper and lower ends of the thin photovoltaic panel 4 and the heat insulating frame 3 to provide a convection gap. The thin solar power generation panel uses, for example, a crystalline silicon thin solar power generation panel with a thickness of 3 mm.

As shown in FIGS. 2 to 5, a convection space is provided between the back side of the thin solar power generation panel 4 and the thin heat insulating panel 2, and a heat pipe 5 is installed therein. The heat pipe 5 is disposed in a convection space formed between the thin solar panel 4 and the thin heat insulating panel 2 without contacting the thin solar panel and the thin heat insulating panel. can also be done easily. The tip of the heat pipe 5 is inserted into the heat pipe positioning hole of the heat insulating frame 3 shown in FIG. 2 for positioning.

As shown in Figures 1 and 9, about 8 heat pipes 5 with a thickness of about 8 mm are arranged on the entire surface of the heat insulating casing at a pitch of about 150 mm, and the thin plate width is narrow except for the upper end area of the heat pipes 5 to increase heat collection efficiency. It is equipped with fins 5a. As shown in FIG. 4, there is a wide gap between the heat pipe 5 with thin plate narrow fins 5a and the adjacent heat pipe, so that convection can freely occur.

As shown in FIG. 9, the upper end region of the heat pipe 5 is provided with thin plate wide fins 5b. The thin plate wide fins 5b are used to increase the heat transfer efficiency between the heat pipe 5 and the heat exchange pipe 6, and to improve the temperature difference between the rise and fall of convection before and after the exchange pipe 6 by heat exchange, as shown in FIGS. 3 and 5. In order to function as a partition wall to prevent mixing, there is a minimum gap of about 1 mm between the thin wide fin 5b and the adjacent thin wide fin for assembly, and as shown in FIG. The bending gap is narrowed on the power generation panel 4 side.

The heat exchange pipe 6 shown in FIG. 11 is provided with outer fins 6a and inner fins 6b in order to increase heat exchange efficiency. For example, a 3D printer forms multiple rows of ring-shaped fins on the outer surface of a copper pipe with inner fins. 3D printers can create a variety of shapes and can also increase the heat transfer surface area.

As shown in FIGS. 1 to 5, the heat pipe 5 is installed in a convection space provided between the back side of the thin photovoltaic panel 4 and the thin insulation panel 2, and the heat exchange pipe is installed in the upper part of the insulation frame 3. Rubber bushes 3c are inserted at both ends of the heat insulating frame 3 and the heat exchange pipe 6 for waterproofing. A waterproof cable connector 3d is used at the cable outlet of the thin solar panel 4.

When used exclusively for solar heat collection, as shown in Figs. 2 and 3, the thin solar heat collection panel 7 shown in Fig. 12 is applied to the integrated part of the thin solar power generation panel 4, for example, by baking a sunlight selective absorption paint onto an aluminum plate. The thin solar heat collecting panel 7 subjected to the above is replaced with the thin solar power generation panel 4 and incorporated.

As shown in Figures 2 and 3, unused heat generated mainly by infrared rays of sunlight is transferred to the convection space provided between the back side of the thin solar power generation panel 4 and the thin heat insulating panel 2 using high thermal conductivity heat. Heat is collected by the pipe 5 and transferred to the heat exchange pipe 6. The gas whose temperature has been lowered by the heat collection by the heat pipe 5 passes through the convection gap provided by the spacer 3a at the lower end of the thin solar power generation panel 4, causing convection between the sunlight side of the thin solar power generation panel 4 and the insulating transparent glass 1. It flows into the gap.

As shown in FIGS. 2 and 3, the heat generated on the sunlight side of the thin solar power generation panel 4 flows through the convection gap between the thin solar power generation panel 4 and the heat insulating transparent glass 1 from the convection space and cools down. The gas collects heat and raises the temperature, passes through the convection gap provided by the spacer 3a at the upper end of the thin solar power generation panel, rises through the convection gap, and transfers heat around the outer periphery of the heat exchange pipe 6 with external fins 6a. . The cooled gas passes through the convection gap and descends through the convection space, repeating convection. The heat collected by the heat exchange pipe 6 with the outer fins 6a is highly efficiently exchanged with the heat medium passing through the heat exchange pipe 6 with the inner fins 6b.

Since the heat is collected within the insulated casing, there is less heat radiation to the outside and less influence from outside air such as cold air, maintaining high heat collection efficiency. In addition, heat collection suppresses the temperature rise of the thin solar power generation panel, improving power generation efficiency and lifespan.
Since it is a flat plate type, there is a high degree of freedom in how and where it can be installed.For example, if it is mounted on an automatic solar tracking mount, the angle of incidence of sunlight will be vertical, further increasing the efficiency of power generation and heat collection.

The generated electricity can be stored in secondary batteries and used as a power source for electrical equipment when needed. The collected heat can be stored in an insulated tank as hot water or hot air, and can be used for hot water supply, air conditioning, etc. when needed.
Solar power generation/solar heat collection modules can be used in a wide range of areas, including single-family homes and apartment complexes, welfare facilities, accommodation facilities, public baths, heated pools, plant factories, and aquaculture farms.

1... Insulating transparent glass 2... Thin heat insulating panel 3... Heat insulating frame 3a... Spacer 3b... Rubber packing 3c... Rubber bushing 3d... Waterproof cable connector 4... Thin solar power generation panel 5 Heat pipe 5a Thin plate narrow fin 5b Thin plate wide fin 6 Heat exchange pipe 6a External fin 6b Inner fin 7 Thin solar heat collection panel

Claims (4)

A thin solar power generation panel and a heat pipe are built into an insulating casing consisting of an insulating transparent glass on the sunlight side, a thin insulating panel on the back side, and an insulating frame around the outer periphery, and the thin solar panel is made of the insulating transparent glass. The heat pipe is arranged in a space formed between the thin solar panel and the thin heat insulating panel without contacting the thin solar panel and the heat insulating panel. The system uses solar power generation and the unused heat generated mainly by infrared rays of sunlight inside the insulated housing, which collects heat using heat pipes with high thermal conductivity and gas convection, and converts it into a heat medium using heat exchange pipes. A photovoltaic power generation/solar heat collection module that exchanges heat with the sun and uses solar energy as electricity and heat with high efficiency. The heat exchange pipe according to claim 1 is a heat exchange pipe that has multiple rows of ring-shaped fins on the outer surface of the pipe and several rows of fins on the inner surface and can perform heat exchange with high efficiency. A solar power generation/solar heat collection module that can exchange solar energy into electricity and heat with high efficiency. A thin solar heat collecting panel and a heat pipe are built into an insulating casing consisting of an insulating transparent glass on the sunlight side, a thin heat insulating panel on the back side, and a heat insulating frame around the outer periphery, and the solar heat collecting panel is attached to the insulating glass. The heat pipe is arranged without contacting the solar heat collecting panel and the thin heat insulating panel in a space formed between the thin solar heat collecting panel and the heat insulating panel. The heat generated by sunlight, mainly infrared rays, is collected inside the insulated casing using heat pipes with high thermal conductivity and gas convection, and the heat is exchanged with a heat medium using heat exchange pipes. A solar heat collection module that can use energy as heat with high efficiency. The heat exchange pipe according to claim 3 is a heat exchange pipe that has multiple rows of ring-shaped fins on the outer surface of the pipe and several rows of fins on the inner surface, and can perform heat exchange with high efficiency. A solar heat collection module that can exchange solar energy and use it as heat with high efficiency.

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