Photovoltaic solar heat collector

Abstract

The utility model discloses a photovoltaic solar heat collector which comprises a solar photovoltaic panel, a heating water pipe is laid on the back face of the solar photovoltaic panel, a water inlet is formed in one end of the heating water pipe, and a water outlet is formed in the other end of the heating water pipe. The heating water pipes are arranged in multiple rows, every two adjacent water pipes are connected in an end-to-end mode through a bent pipe, and the surfaces of the heating water pipes are coated with heat absorption coatings. The heating water pipe is a stainless steel corrugated pipe, and the heat absorption coating is formed by mixing graphite, carbon black, resin and ceramic. The solar photovoltaic heating system can supply hot water while supplying power and heating, is small in change amount on the solar photovoltaic panel, is low in development and use cost, and can be widely applied to the field of solar photovoltaics.

Description

Technical Field

[0001] The utility model relates to the field of solar energy, in particular to a photovoltaic solar heat collector. Background Art

[0002] With the widespread promotion and adoption of the photovoltaic industry, many rural and commercial housing rooftops have installed solar photovoltaic panels for power generation, occupying space previously occupied by solar water heaters. As we all know, solar photovoltaic power generation primarily absorbs visible light, but also generates heat from invisible light, which is not utilized during solar power generation. During operation, solar photovoltaic panels absorb 80% of the heat from sunlight, of which 20% is consumed during visible light generation, and the remaining 60% is dissipated into the air through heat conduction from the panels, leaving them unused. Furthermore, installing solar water heaters separately would not only reduce the area available for the panels, impacting power generation, but also be costly. Therefore, improvements are needed to reduce heat waste while still meeting daily hot water needs for bathing. Utility Model Content

[0003] The utility model aims to provide a photovoltaic solar heat collector to solve the problem that the solar heat of existing solar photovoltaic panels cannot be fully utilized.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a photovoltaic solar collector, including a solar photovoltaic panel, a heating water pipe is laid on the back of the solar photovoltaic panel, one end of the heating water pipe is provided with a water inlet, and the other end is provided with a water outlet; the heating water pipes are arranged in multiple rows, and the ends of two adjacent row pipes are connected by a bend pipe, and the surface of the heating water pipe is coated with a heat-absorbing coating.

[0005] In order to improve the heat absorption capacity, the heating water pipe is a stainless steel bellows.

[0006] Preferably, the heat-absorbing coating is a mixture of graphite, carbon black, resin and ceramics.

[0007] In order to facilitate quick disassembly and assembly, the water inlet and the water outlet are both provided with hose connectors, and a hose is provided between the heating water pipes between two adjacent solar photovoltaic panels.

[0008] In order to further improve the heat absorption capacity, a layer of aluminum plate is attached to the surface of the heating water pipe, and the surface of the aluminum plate is also coated with a heat-absorbing coating.

[0009] Furthermore, a heat-insulating layer is provided above the aluminum plate, and a protective plate is provided on the heat-insulating layer.

[0010] Preferably, the insulation layer is insulation cotton, and the protective plate is galvanized plate or PVC plate.

[0011] The beneficial effects of this utility model are as follows: By adding heating water pipes to the solar photovoltaic panels, the utility model fully utilizes the heat from the solar photovoltaic panels. At the same time, there is no need to arrange a separate solar water heater, ensuring hot water supply while saving costs. To improve the heating efficiency of the heating water pipes, the heating water pipes on multiple solar photovoltaic panels are connected in series to extend the distance the water flows. The heating water pipes use corrugated pipes for better heat absorption. At the same time, technical means such as heating coatings, aluminum plates, and insulation layers are used to further improve the heat absorption capacity of the heating water pipes.

[0012] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the connection of the heating water pipe in the present invention.

[0014] Figure 2 It is a side sectional view of the present invention.

[0015] Figure 3 This is a schematic diagram of the heat-absorbing coating on the heating water pipe in the present invention.

[0016] Figure 4 Schematic diagram of the heat-absorbing coating on the aluminum plate in the utility model. DETAILED DESCRIPTION

[0017] Examples, such as Figures 1 to 4 As shown, a photovoltaic solar thermal collector includes a solar photovoltaic panel 1. A heating water pipe 2 is laid on the back of the solar photovoltaic panel 1. One end of the heating water pipe 2 is provided with a water inlet 21, and the other end is provided with a water outlet 22. The heating water pipes 2 are arranged in multiple rows, and the ends of two adjacent drainage pipes are connected by an elbow. Water enters from the water inlet 21 and exits from the water outlet 22 after being heated. To ensure the outlet temperature of the water at the water outlet 22, the heating water pipes 2 on multiple solar photovoltaic panels 1 are connected in series to extend the flow distance of the water and absorb more heat. For convenient connection, a hose connector 4 is provided on each of the water inlet 21 and the water outlet 22, and a hose 5 is provided between the heating water pipes 2 of two adjacent solar photovoltaic panels 1. This utility model can provide hot water while generating electricity from solar energy, thereby meeting the needs of electricity and hot water. It can be widely used in homes, schools, factories, and other places to provide heating, water supply, and electricity.

[0018] To improve the heating efficiency of the heating water pipe 2, the heating water pipe 2 is a stainless steel corrugated pipe, and its surface is coated with a heat-absorbing coating 3. An aluminum plate 6 is laminated to the surface of the heating water pipe 2, and the surface of the aluminum plate 6 is also coated with the heat-absorbing coating 3. An insulating layer 7 is provided above the aluminum plate 6, and a protective plate 8 is provided on the insulating layer 7.

[0019] Preferably, the heat-absorbing coating 3 is a mixture of graphite, carbon black, resin and ceramic. The thermal insulation layer 7 is thermal insulation cotton, and the protective plate 8 is a galvanized plate or a PVC plate.

[0020] The heating water pipe 2 adopts a stainless steel bellows, which can increase the contact area with water and improve the efficiency of heat exchange. At the same time, the bellows can prolong the flow time of water and increase the heat exchange time. The bellows also have the advantage of being easy to bend, convenient to bend and install, improve sealing and avoid leakage.

[0021] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A photovoltaic solar thermal collector, comprising a solar photovoltaic panel (1), characterized in that: A heating water pipe (2) is laid on the back of the solar photovoltaic panel (1), one end of the heating water pipe (2) is provided with a water inlet (21), and the other end is provided with a water outlet (22); the heating water pipes (2) are arranged in multiple rows, and the ends of two adjacent rows of pipes are connected by bends, and the surface of the heating water pipe (2) is coated with a heat-absorbing coating (3).

2. The photovoltaic solar thermal collector according to claim 1, characterized in that: The heating water pipe (2) is a stainless steel bellows.

3. The photovoltaic solar thermal collector according to claim 1, characterized in that: A hose connector (4) is provided on both the water inlet (21) and the water outlet (22), and a hose (5) is provided between the heating water pipes (2) of two adjacent solar photovoltaic panels (1).

4. The photovoltaic solar thermal collector according to claim 1, wherein: A layer of aluminum plate (6) is laminated on the surface of the heating water pipe (2), and the surface of the aluminum plate (6) is also coated with a heat-absorbing coating (3).

5. The photovoltaic solar thermal collector according to claim 4, characterized in that: A thermal insulation layer (7) is provided above the aluminum plate (6), and a protective plate (8) is provided on the thermal insulation layer (7).

6. The photovoltaic solar thermal collector according to claim 5, characterized in that: The thermal insulation layer (7) is thermal insulation cotton, and the protective plate (8) is a galvanized plate or a PVC plate.

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