CN201877453U - Heat-pipe solar energy opto-electrical and opto-thermal comprehensive utilization device - Google Patents

Abstract

The utility model relates to a heat pipe type solar photoelectric photothermal comprehensive utilization device. The device includes a water storage tank and a photovoltaic/hot water plate; the photovoltaic/hot water plate includes a heat pipe, a photovoltaic cell and a heat-conducting metal plate; The split-type heat pipe composed of the evaporator tube and the evaporator tube, the evaporator tube is evenly distributed on the back of the heat-conducting metal plate; the condensate tube is evenly distributed in the water storage tank; one end of each condensate tube is connected to one end of the working fluid riser tube The other ends are respectively connected to the working fluid return pipe; the other end of the working fluid rising pipe is connected to one end of each evaporating section tube, and the other end of the working fluid return pipe is connected to the other end of each evaporating section tube; the back of the heat conduction metal plate A heat insulation layer is also provided, and the heat insulation layer wraps the evaporation section pipe. The utility model improves the comprehensive utilization efficiency of solar energy, is suitable for use in high-latitude cold regions, conducts indirect heat conduction through a heat pipe, reduces the corrosion of the battery plate core by tap water, and improves the service life.

Description

Heat pipe solar photoelectric photothermal comprehensive utilization device

technical field

The utility model belongs to the technical field of solar energy application, and in particular relates to a heat pipe type solar photoelectric, photothermal comprehensive utilization device.

Background technique

At present, my country has launched a low-carbon economic strategic economic policy to change the situation that my country's low energy utilization efficiency and the excessive use of coal and other fossil energy have led to more severe energy problems and increasingly serious environmental damage in my country. Solar energy is an important alternative to traditional energy because of its renewable and environmentally friendly advantages. At present, the utilization methods of solar energy mainly include photothermal conversion utilization and photoelectric conversion utilization.

A single photoelectric or photothermal system can only get one kind of benefit. The solar photovoltaic/hot water (PV/T) system belongs to a solar photovoltaic/photothermal comprehensive utilization system, which can not only convert solar energy into high-grade electrical energy output, but also convert the remaining solar energy into thermal energy and collect and utilize it. , The heat-carrying medium in the system can also effectively cool the photovoltaic cell and improve its photovoltaic performance. Therefore, the efficiency of comprehensive utilization of solar energy in this system is much higher than that of a single photovoltaic or photothermal system. However, most ordinary PV/T heat collectors use water directly as the heat-carrying medium, which is prone to freezing in high-latitude cold regions, which affects normal use; Corroded, reducing its useful life. The heat pipe is an efficient heat conduction component, its heat conduction capacity is even greater than that of most metals, and the heat pipe uses low freezing, low boiling point and low corrosive working fluid, which is not easy to freeze under cold conditions, so the heat pipe is used in In solar photovoltaic/hot water collectors, it can not only solve the problem of icing in high-latitude cold regions, but also quickly transfer the heat away from the photovoltaic panels to reduce their temperature, thereby improving their efficiency. Reduce the corrosion of the heat collector plate from the outside world and prolong its service life.

In the existing relevant patents, such as solar flat water heater 01257502.X, although it also uses heat pipes for heat conduction, it is only a structure for solar light and heat utilization, and its plate core is a structure of heat pipes and fins, which is not conducive to Laminated photovoltaic cells; in addition, such as photovoltaic photothermal heat collector CN101106167A, a solar thermal power utilization device 02216271.2, etc., they all use water directly in the heat collecting plate as the way of collecting heat, which belongs to ordinary PV/T heat collecting The device does not have the function of antifreeze, cannot be used in cold areas, and is easily corroded. In addition, the heat transfer between the water and the heat collector plate in this way is a single-phase heat exchange, and the heat transfer capacity is not strong.

Contents of the invention

In order to overcome the shortcomings of the above-mentioned prior art, the utility model proposes a heat pipe type solar photoelectric photothermal comprehensive utilization device. On the basis of the ordinary solar photoelectric photothermal comprehensive utilization mechanism, the system adds heat pipe heat conduction technology, combining heat pipe technology and The combination of solar thermal and photoelectric utilization not only improves the comprehensive utilization efficiency of solar energy, but also solves the problem of using it in different geographical conditions.

The specific technical solutions are as follows:

The heat pipe solar photoelectric photothermal comprehensive utilization device includes a water storage tank and a photovoltaic/hot water plate, and the water storage tank is provided with a water inlet and a water outlet; the photovoltaic/hot water plate includes a heat pipe, a photovoltaic cell and a metal heat conducting plate; The photovoltaic/hot water panel is located under the water storage tank;

The photovoltaic cells are connected in series into strips, and are all arranged on the upper surface of the heat-conducting metal plate, a gap is provided between two adjacent rows of photovoltaic cells, and a glass cover is provided above the photovoltaic cells;

The heat pipe is a split-type heat pipe composed of the condensing section tube of the heat pipe and the evaporating section tube of the heat pipe. The gap between them; the condensing tubes of the heat pipes are evenly distributed in the water storage tank; one end of the condensing tubes of each heat pipe is respectively connected to one end of the working fluid ascending pipe, and the other end is respectively connected to the working fluid return pipe; the working fluid rises The other end of the tube is connected to one end of the evaporating tube of each heat pipe, and the other end of the working fluid return tube is connected to the other end of the evaporating tube of each heat pipe; the back of the heat-conducting metal plate is also provided with a heat-insulating layer, and the insulation The thermal layer wraps around the evaporating section of the heat pipe.

The back of the photovoltaic cell is provided with a black polyvinyl fluoride composite film with high solar energy absorption rate, and the upper surface is provided with a transparent polyvinyl fluoride composite film.

The gap between the adjacent photovoltaic cells is 12-20mm.

The distance between the glass cover plate and the upper surface of the photovoltaic cell is 30-40 mm.

The heat insulation layer material is polystyrene foam material with a thickness of 40-50mm.

Compared with the prior art, the utility model has the advantages that: the system can utilize solar energy from both photothermal and photoelectric aspects, greatly improving the comprehensive utilization efficiency of solar energy; The problem that the system cannot be used in high-latitude cold regions expands its geographical scope of use; in addition, the indirect heat transfer through heat pipes avoids the need to directly pass water in the PV/T panel for heat transfer, thereby greatly reducing The corrosion of water to the PV/T board core increases its service life.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is a cross-sectional view of the photovoltaic hot water panel.

Fig. 3 is a cross-sectional view of a photovoltaic panel core.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described further through embodiment.

Example:

As shown in FIG. 1 , the heat pipe solar photoelectric photothermal comprehensive utilization device includes a water storage tank 3 and a photovoltaic/hot water panel 1 . The water storage tank 3 is provided with a water inlet and a water outlet. The photovoltaic/hot water panel 1 includes a heat pipe 121 , a photovoltaic cell 113 and a heat conducting metal plate 115 , and the photovoltaic/hot water panel 1 is located below the water storage tank 3 .

Photovoltaic cells 113 are connected in series into strips, and are all arranged on the upper surface of the heat-conducting metal plate 115, and the back of the photovoltaic cells is provided with a layer of black polyvinyl fluoride composite film (TPT) 114 with high absorption rate, which can enhance the absorption of solar energy And to make the photovoltaic cell 113 and the heat-conducting metal plate 115 better electrically insulated; its upper surface is provided with a transparent polyvinyl fluoride composite film 111 through plastic material (EVA), see FIG. 2 and FIG. 3 . A gap of 15 mm is provided between two adjacent rows of photovoltaic cells 113 . A glass cover 13 is installed above the photovoltaic cell 113 , and the distance between the glass cover 13 and the upper surface of the photovoltaic cell 113 is 40 mm.

The heat pipe is a split heat pipe composed of a heat pipe condensation section pipe 122 and a heat pipe evaporation section pipe 121 . The evaporator pipes 121 of the heat pipes are uniformly arranged on the back of the heat-conducting metal plate 115, and the evaporator pipes 121 of each heat pipe are located in the gap between two adjacent rows of photovoltaic cells. Condensation section pipes 122 of the heat pipes are evenly distributed in the water storage tank 3; one end of the condensation section pipe 122 of each heat pipe is respectively connected to one end of the working fluid ascending pipe 123, and the other end is respectively connected to the working fluid return pipe 124; The other end of the pipe 123 is connected to one end of the evaporating pipe 121 of each heat pipe, and the other end of the working fluid return pipe 124 is connected to the other end of the evaporating pipe 121 of each heat pipe. The back side of the heat-conducting metal plate 115 is also equipped with a heat-insulating layer 14, and the heat-insulating layer 14 wraps the evaporation section pipe 121 of the heat pipe, and the material of the heat-insulating layer is polystyrene foam.

Working fluid riser pipe 123 and heat pipe working medium return pipe 124 are connected to form a closed circulation loop, wherein the evaporation section pipe 121 of the heat pipe is located in the photovoltaic/hot water panel 1, and the condensation section pipe 122 of the heat pipe is located in the water storage tank 3, and the heat pipe The condensing section tube 122 is designed as a vertical tube bundle heat exchanger type, see FIG. 1 . When the working medium in the evaporating section pipe 121 of the heat pipe is heated and evaporated, the working medium steam enters the condensing section pipe 122 of the heat pipe along the working medium ascending pipe 123 of the heat pipe, and then exchanges heat with the water in the water storage tank 3 and cools to a liquid state. Under the action of gravity or capillary force, return to the evaporation section pipe 121 of the heat pipe along the working fluid return pipe 124 of the heat pipe to absorb heat.

The specific operation principle of the utility model is: when the sunlight shines on the photovoltaic/hot water plate 1, a part of the sunlight will be absorbed by the photovoltaic cell 113 and converted into electrical energy, and then converted into commonly used alternating current by the photovoltaic control system 2 Afterwards, it is exported to the outside for utilization, and most of the rest is converted into heat energy and transferred to the working fluid in the evaporation section tube 121 of the heat pipe through the heat-conducting metal plate 115. The condensing section pipe 122 is then exchanged heat with the water in the water storage tank 3 and cooled to a liquid state, and then returns to the evaporating section pipe 121 of the heat pipe along the working fluid return pipe 124 to absorb heat under the action of gravity or capillary force, so that Continuous heat absorption → evaporation rising → heat release → condensation and reflux, so as to transfer the heat in the photovoltaic hot water panel 1 to the water in the water storage tank 3, thereby increasing its temperature to meet the use requirements.

Claims (5)

1. Heat pipe solar photoelectric photothermal comprehensive utilization device, including a water storage tank and a photovoltaic/hot water plate, the water storage tank is provided with a water inlet and a water outlet; the photovoltaic/hot water plate includes a heat pipe, a photovoltaic cell and a metal heat conduction plate plate, characterized in that: the photovoltaic/hot water plate is located below the water storage tank; The photovoltaic cells are connected in series into strips, and are all arranged on the upper surface of the heat-conducting metal plate, a gap is provided between two adjacent rows of photovoltaic cells, and a glass cover is provided above the photovoltaic cells; The heat pipe is a split-type heat pipe composed of the condensing section tube of the heat pipe and the evaporating section tube of the heat pipe. The gap between them; the condensing tubes of the heat pipes are evenly distributed in the water storage tank; one end of the condensing tubes of each heat pipe is respectively connected to one end of the working fluid ascending pipe, and the other end is respectively connected to the working fluid return pipe; the working fluid rises The other end of the tube is connected to one end of the evaporating tube of each heat pipe, and the other end of the working fluid return tube is connected to the other end of the evaporating tube of each heat pipe; the back of the heat-conducting metal plate is also provided with a heat-insulating layer, and the insulation The thermal layer wraps around the evaporating section of the heat pipe. 2. The heat pipe type solar photoelectric photothermal comprehensive utilization device according to claim 1, characterized in that: the back side of the photovoltaic cell is provided with a black polyvinyl fluoride composite film with high solar energy absorption rate, and the upper surface is provided with a transparent film. polyvinyl fluoride composite film. 3. The heat pipe solar photoelectric photothermal comprehensive utilization device according to claim 1, characterized in that: the gap between the adjacent photovoltaic cells is 12-20mm. 4 . The heat pipe solar photoelectric photothermal comprehensive utilization device according to claim 1 , wherein the distance between the glass cover plate and the upper surface of the photovoltaic cell is 30-40 mm. 5 . The heat pipe solar photoelectric photothermal comprehensive utilization device according to claim 1 , characterized in that: the material of the heat insulation layer is polystyrene foam material with a thickness of 40-50 mm. 6 .

Images