CN201892330U - Heat pipe type solar photoelectric and photo-thermal comprehensive utilization system - Google Patents

Abstract

The utility model relates to a heat-pipe solar photoelectric photothermal comprehensive utilization system. The system includes water storage tanks and photovoltaic/hot water panels, which are connected by water pipes; photovoltaic/hot water panels include heat pipes, photovoltaic cells and heat-conducting metal plates; On the upper surface, there is a gap between two adjacent rows of photovoltaic cells; the evaporation section of the heat pipe is arranged on the back of the heat-conducting metal plate, and the evaporation section of each heat pipe is located in the gap between two adjacent rows of photovoltaic cells; the heat-conducting metal plate There is also a heat insulation layer on the back of the heat pipe, and the heat insulation layer wraps the heat pipe; the heat collector tube is evenly distributed with copper sleeves, the copper sleeve is perpendicular to the heat collector tube, and the condensation section of each heat pipe is inserted in the copper sleeve. inside the tube. The utility model greatly improves the comprehensive utilization efficiency of the solar energy of the system; it can be used in high-latitude cold regions, expands the geographical range of its use, reduces the corrosion of the battery board core by tap water, and improves the service life.

Description

A heat pipe solar photoelectric photothermal comprehensive utilization system

technical field

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

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.

Utility model content

In order to overcome the deficiencies of the above-mentioned prior art, the utility model proposes a heat pipe-type solar photoelectric photothermal comprehensive utilization system, which adds heat pipe heat conduction technology on the basis of the ordinary solar photoelectric photothermal comprehensive utilization structure, 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:

A heat-pipe solar photovoltaic photothermal comprehensive utilization system includes a water storage tank and a photovoltaic/hot water plate. The water storage tank is provided with a water inlet and a water outlet, and a water pump is provided on the water outlet. The water outlet of the water pump passes through the water pipe and The heat collecting runner pipe is connected, and the other end of the heat collecting runner pipe is connected to the water inlet of the water storage tank through the water pipe; the photovoltaic hot water plate includes heat pipes, photovoltaic cells and heat-conducting metal plates, and the photovoltaic cells are connected in strips. And they are all arranged on the upper surface of the heat-conducting metal plate. There is a gap between two adjacent rows of photovoltaic cells, and a glass cover is arranged above the photovoltaic cells; the evaporation section of the heat pipe is arranged on the back of the heat-conducting metal plate. The evaporation section is located in the gap between two adjacent rows of photovoltaic cells; the back of the heat-conducting metal plate is also provided with a heat-insulating layer, and the heat-insulating layer wraps the heat pipe;

Copper sleeves are evenly distributed on the heat collecting runner tubes, the copper sleeves are perpendicular to the heat collecting runner tubes, and the condensation section of each heat pipe is inserted in the copper sleeves.

More than six rows of photovoltaic cells are uniformly arranged on the upper surface of the heat-conducting metal plate, and more than five heat pipes are arranged on the back; correspondingly, more than five copper sleeves are evenly arranged on the heat-collecting runner tubes.

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 30-40mm.

The heat pipe is a gravity heat pipe or a capillary heat pipe; when it is a gravity heat pipe, the position of the condensation section of the heat pipe must be higher than the position of the evaporation section of the heat pipe.

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

Figure 1 is a schematic structural diagram of a heat pipe solar photoelectric photothermal comprehensive utilization system.

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

Figure 3 is a cross-sectional view of the photovoltaic cell core,

Figure 4 is a schematic diagram of the structure of the heat collecting runner tube,

FIG. 5 is a top view of FIG. 4 .

Detailed ways

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

Example:

Referring to FIG. 1 , a heat-pipe solar photovoltaic photothermal comprehensive utilization system includes a water storage tank 3 and a photovoltaic/hot water panel 1 . The water storage tank is provided with a water inlet and a water outlet, and a water pump 4 is installed on the water outlet. The water outlet of the water pump 4 is connected with the heat collecting runner pipe 151 through the water pipeline, and the other end of the heat collecting runner pipe 151 is connected with the water pipeline through the water pipeline. The water inlets of the water storage tank 3 are connected. The photovoltaic/hot water panel 1 includes a heat pipe 116 , a photovoltaic cell 113 , a heat-conducting metal plate 115 and a frame 16 . Photovoltaic cells 113 are connected in series into strips, and eight rows of photovoltaic cells 113 are arranged on the upper surface of the heat-conducting metal plate 115, as shown in Figure 2; the back of the photovoltaic cells is provided with a layer of black polyvinyl fluoride composite film (TPT) with high absorption rate 114, which can enhance the absorption of solar energy and provide better electrical insulation between the photovoltaic cell 113 and the heat-conducting metal plate 115; a transparent polyvinyl fluoride composite film 111 is provided on its upper surface. A glass cover plate 13 is installed above the photovoltaic cells 113, and the distance between them is 35 mm; the gap between two adjacent rows of photovoltaic cells is 15 mm. Nine heat pipes 12 are evenly distributed on the back of the heat-conducting metal plate 115 for taking away heat from the heat-conducting metal plate 115 . The evaporation section of each heat pipe is located in the gap between two adjacent rows of photovoltaic cells 113; the back side of the heat-conducting metal plate 115 is provided with a heat-insulating layer 14, and the heat-insulating layer 14 wraps the heat pipe, and the material of the heat-insulating layer is polystyrene foam material.

Referring to Fig. 4 and Fig. 5, nine copper sleeves 152 are evenly distributed on the heat collecting runner pipe 151, the copper sleeves 152 are perpendicular to the heat collecting runner pipe 151, and the condensation section 122 of each heat pipe is inserted into the copper sleeve 152 .

Wherein, if the heat pipe in the photovoltaic/hot water panel 1 is a gravity heat pipe, the position of the condensation section 122 of the heat pipe must be higher than the position of the evaporation section 121 of the heat pipe during installation to ensure the normal operation of the gravity heat pipe; if it is a capillary heat pipe , the relative positions of the evaporating section 121 and the condensing section 122 of the heat pipe have no special requirements, as long as they are within the effective range of the capillary force in the heat pipe.

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 passed to the evaporation section 121 of the heat pipe through the heat-conducting metal plate 115, and then transferred to the water in the heat collecting runner pipe 151 by the condensation section 122 of the heat pipe, and the heated water Driven by the water pump 4, it returns to the water storage tank 3 to exchange heat with the water inside. At the same time, the cold water in the water storage tank 3 enters the heat collector flow pipe 151 on the top of the photovoltaic/hot water plate 1 through the water pump 4 to absorb heat. The water pump 4 is used to drive the water in the whole circuit to circulate continuously. When the cooling water flows through the heat collecting runner pipe 151 , the condensation section 122 of the heat pipe first transfers heat to the copper sleeve 152 , and then the copper sleeve 152 transfers heat to the water in the heat collecting runner pipe 151 .

Claims (7)

1. heat pipe type solar photovoltaic/thermal utilization system, comprise storage tank and photovoltaic/hot water plate, described storage tank is provided with water inlet and delivery port, and delivery port is provided with water pump, the delivery port of water pump is communicated with the thermal-arrest flow-path tube by waterway pipe, and the other end of thermal-arrest flow-path tube is being communicated with the water inlet of storage tank again by waterway pipe; Described photovoltaic/hot water plate comprises heat pipe, photovoltaic cell and thermal conductive metal plate, it is characterized in that: described photovoltaic cell is connected into strip, and all be laid in the upper surface of thermal conductive metal plate, be provided with the gap between the adjacent two row photovoltaic cells, the top of photovoltaic cell is provided with glass cover-plate; The evaporator section of heat pipe all is laid in the back side of thermal conductive metal plate, the gap location of the evaporator section of every heat pipe between adjacent two row photovoltaic cells; The back side of thermal conductive metal plate also is provided with thermal insulation layer, and thermal insulation layer is wrapped in heat pipe;

Be laid with copper sleeve on the described thermal-arrest flow-path tube, copper sleeve is perpendicular to the thermal-arrest flow-path tube, and the condensation segment of every heat pipe is plugged in the copper sleeve.

2. a kind of heat pipe type solar photovoltaic/thermal utilization system according to claim 1 is characterized in that: the upper surface of described thermal conductive metal plate is laid with the above photovoltaic cell of six row, and the back side is provided with the heat pipe more than five; Be laid with the copper sleeve more than five on the corresponding described thermal-arrest flow-path tube.

3. a kind of heat pipe type solar photovoltaic/thermal utilization system according to claim 1 and 2, it is characterized in that: the back side of described photovoltaic cell is provided with the polyvinyl fluoride composite membrane of the black of high solar absorptivity, and upper surface is provided with transparent polyvinyl fluoride composite membrane.

4. a kind of heat pipe type solar photovoltaic/thermal utilization system according to claim 1 and 2, it is characterized in that: the gap between the described adjacent photovoltaic cell is 12-20mm.

5. a kind of heat pipe type solar photovoltaic/thermal utilization system according to claim 1 and 2, it is characterized in that: the spacing between described glass cover-plate and the photovoltaic cell upper surface is 30～40mm.

6. a kind of heat pipe type solar photovoltaic/thermal utilization system according to claim 1 and 2, it is characterized in that: described heat pipe is gravity assisted heat pipe or capillary heat pipe; When being gravity assisted heat pipe, the condensation segment position of heat pipe must be higher than the evaporator section position of heat pipe.

7. a kind of heat pipe type solar photovoltaic/thermal utilization system according to claim 1 and 2, it is characterized in that: described insulating layer material is a polystyrene foamed material, thickness is 40～50mm.

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