CN101963396A - Secondary reflection closed spherical lighting solar energy hot water generation device - Google Patents

Abstract

A solar hot water power generation device with secondary reflection and closed spherical lighting. The device receives solar energy through the reflection and focusing effect of a large plane reflector and a rotating parabolic reflector, which can greatly improve the receiving efficiency of solar energy. It can be used to achieve Harvesting and receiving solar energy in the environment.

Description

Secondary reflection closed spherical lighting solar water heating power generation device

Technical field:

The invention relates to a solar energy application technology, in particular to a secondary reflection closed spherical surface daylighting solar water heating power generation device which utilizes the principle of concentrating light of a rotating paraboloid to receive solar energy. receiving efficiency.

Background technique:

Solar energy is a kind of clean energy, inexhaustible and inexhaustible, and will not cause environmental pollution. Nowadays, whether in coastal cities or inland cities, solar energy products are increasingly entering people's field of vision. Solar street lights, solar lawn lights, solar garden lights, solar corridor lights, bus station lights, traffic lights, etc., all kinds of solar water heaters have also approached thousands of households. However, most of these solar products do not have the function of concentrating light, resulting in low utilization of solar energy. If the light intensity on the surface of the solar receiving element is doubled, the receiving efficiency of the solar receiving element will be doubled. At present, the focus of technological competition in the solar industry is mainly the competition for solar receiving efficiency. It can be seen that improving the receiving efficiency is important to the entire industry. Therefore, whether Effectively improving the light intensity of solar receiving elements has become the most concerned issue when people utilize solar energy.

In recent years, foreign countries have achieved concentrated solar energy reception in the photovoltaic matrix of some solar power plants, and there are similar test devices in China, but these devices are complex in structure, bulky and expensive, and it is difficult to promote them in solar household products.

Invention content:

In order to overcome the shortcomings of the existing concentrating device, such as complex mechanical structure, bulky volume, and high cost, the present invention aims at the deficiencies of the existing technology, improves the existing technology, and proposes a small volume, simple and reliable structure, and low cost The solar concentrated light receiving device, which can realize the concentrated light reception of solar energy.

The technical solution adopted by the present invention to solve the technical problem is: a plurality of solar energy concentrating receiving mechanisms are installed in a rectangular box, a water tank is installed above the rectangular box, and a flat transparent surface is covered on the rectangular box. The cover plate, the flat transparent cover plate seals each solar concentrating receiving mechanism in a rectangular box. The receiver is composed of a solar concentrating receiving mechanism divided into multiple groups. A rectangular large flat reflector is installed in front of each group of solar concentrating receiving mechanism. There is a long and straight light incident slit in the direction, and the large plane reflectors of each group of solar concentrating receiving mechanisms intersect with the plane transparent cover to form an angle of 45°.

The light energy receiver of each solar concentrating receiving mechanism is composed of a spherical hollow heat conduction cavity, a spherical solar panel and a hemispherical transparent light guide cover. Both the spherical hollow heat conduction cavity and the spherical solar panel have a light The incident circular hole, the spherical solar panel of each light receiver is concentric with the spherical hollow heat conduction cavity of the light receiver, and the spherical solar panel of each light receiver is tightly bonded to the spherical hollow of the light receiver On the surface of the heat conduction cavity and make the spherical hollow heat conduction cavity and the center of the light incident circular hole on the spherical solar panel coincide with each other,

The hemispherical transparent light guide cover of each light energy receiver is tightly covered on the light incident circular hole of the spherical hollow heat conduction cavity of the light energy receiver. The hemispherical transparent light guide cover of each light energy receiver and the spherical hollow heat conduction The cavity forms a closed cavity,

The light energy receiver of each group of solar energy concentrating receiving mechanism is installed on the back side of the reflective surface of this group of large plane reflectors, and the light incident circle of each spherical hollow heat conduction cavity of the light energy receiver of each group of solar concentrating receiving mechanism The light incident slits of the large flat reflectors in the group are facing the holes and the light incident circular holes of the spherical hollow heat-conducting cavities are facing the reflective surfaces of the rotating parabolic reflectors, and the light energy receivers of the solar concentrating receiving mechanisms The center of the light incident circular hole of the spherical hollow heat conduction cavity and the spherical center of the hemispherical transparent light guide cover coincide with the focus of the rotating parabolic reflector of the solar concentrating receiving mechanism, and the rotating parabolic reflectors of each group of solar concentrating receiving mechanisms The focal point of the mirror is located on the light entrance slit of the large flat mirror of the group,

When the sunlight is incident perpendicular to the plane transparent cover plate, the incident light can pass through the light incident slits and The light incident circular hole of the spherical hollow heat-conducting cavity is irradiated on the spherical solar panel of each light energy receiver, and part of the light energy irradiated on the spherical solar panel of each light energy receiver is converted into electrical energy through the spherical solar panel. The other part of light energy is converted into heat energy through the spherical hollow heat conduction cavity of each light energy receiver, because the hemispherical transparent light guide cover of each light energy receiver and the spherical hollow heat conduction cavity form a closed cavity, and each spherical hollow The light incident circular hole of the heat conduction cavity is very small, and most of the light energy of the light incident circular hole entering each spherical hollow heat conduction cavity is converted into electric energy and heat energy in the closed cavity, thus greatly improving the photoelectricity of each light energy receiver. and light-to-heat conversion rate.

The beneficial effects of the present invention are: through the reflective focusing effect of each rotating parabolic reflector, the intensity of sunlight irradiated on each light energy receiver is greatly improved, thereby greatly improving the photoelectric and photothermal conversion rates of each light energy receiver , achieving high photoelectric and photothermal conversion rates in both strong and weak light environments.

Description of drawings:

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the overall structure diagram of the present invention.

Fig. 2 is A-A sectional view of the overall structure diagram of the present invention.

Fig. 3 is a B-B sectional view of the overall structure diagram of the present invention.

Fig. 4 is an enlarged view of a cross-sectional view of a solar concentrating receiving mechanism according to an embodiment of the present invention.

Fig. 5 is a schematic diagram of a paraboloid of revolution.

In the composition diagram of the paraboloid of revolution in Fig. 5: the paraboloid of revolution S, the quasi-plane S1 of the paraboloid of revolution, the apex O of the paraboloid of revolution, the focal point f of the paraboloid of revolution, and the symmetry axis L of the paraboloid of revolution.

Detailed ways:

In Fig. 1, Fig. 2 and Fig. 3, 25 solar concentrating receiving mechanisms are installed in a rectangular box 3-1, and the 25 solar concentrating receiving mechanisms are divided into five groups. A water tank 8-1 is installed above the rectangular box body 3-1, and a plane transparent cover plate 4-1 is covered on the rectangular box body 3-1. In -1, each solar concentrating receiving mechanism is neatly arranged in the rectangular box 3-1, and each solar concentrating receiving mechanism is composed of a rotating parabolic reflector and a light energy receiver.

Large flat reflector 1-1-1 is all installed in front of the reflective surface of the rotating parabolic reflector of the first group of solar concentrating receiving mechanism, and all is installed in front of the reflective surface of the rotating parabolic reflector of the second group of solar concentrating receiving mechanism Large plane reflector 1-1-2 has been installed, and large plane reflector 1-1-3 has been installed in the front of the reflective surface of the rotating parabolic reflector of the third group of solar concentrating receiving mechanism, and in the fourth group of solar concentrating Large plane reflectors 1-1-4 are installed in front of the reflective surface of the rotating parabolic reflector of the receiving mechanism, and large flat reflectors 1 are installed in front of the reflective surface of the rotating parabolic reflector of the fifth group of solar concentrating receiving mechanisms -1-5, the middle seat of the above-mentioned five large plane reflectors is provided with a long and straight light incident slit along its long side direction, and the above-mentioned five large plane reflectors intersect with the plane transparent cover plate 4-1 to form 45 ° angle, the hemispherical hollow heat conduction chambers of the first group of solar concentrating receiving mechanisms are connected in series through heat pipes 9-1-3, and the hemispherical hollow heat conducting cavities of the second group of solar concentrating receiving mechanisms pass through heat pipes 9 -2-3 are connected in series, the hemispherical hollow heat conduction cavity of the third group of solar concentrating receiving mechanism is connected in series through heat pipe 9-3-3, the hemispherical hollow heat conducting cavity of the fourth group of solar concentrating receiving mechanism The cavities are connected in series through heat pipes 9-4-3, the hemispherical hollow heat conduction chambers of the fifth group of solar concentrating receiving mechanisms are connected in series through heat pipes 9-5-3, heat pipes 9-1-3 , heat pipe 9-2-3, heat pipe 9-3-3, heat pipe 9-4-3 and the lower end of heat pipe 9-5-3 communicate with water tank 8-1 through cold water pipe 9-1-2, conduct heat The upper end of pipe 9-1-3, heat pipe 9-2-3, heat pipe 9-3-3, heat pipe 9-4-3 and heat pipe 9-5-3 passes through hot water pipe 9-1-1 and Water tank 8-1 communicates.

Provided in Fig. 4 is the structure of the first solar energy concentrating receiving mechanism, in Fig. 4 the first solar concentrating receiving mechanism is made of rotating parabolic reflector 1-2-1 and light energy receiver 1-3-1, light energy The receiver 1-3-1 is composed of a spherical hollow heat conduction cavity 5-1, a spherical solar cell panel 10-1 and a hemispherical transparent light guide cover 6-1, the spherical hollow heat conduction cavity 5-1 and the spherical solar cell There is a light incident round hole on the plate 10-1, the spherical solar cell panel 10-1 is concentric with the spherical hollow heat conducting cavity 5-1, and the spherical solar cell panel 10-1 is closely bonded to the spherical hollow heat conducting cavity 5-1 on the surface,

The hemispherical transparent light guide cover 6-1 is tightly covered on the light incident round hole of the spherical hollow heat conduction cavity 5-1, and the spherical hollow heat conduction cavity 5-1 and the hemispherical transparent light guide cover 6-1 form a closed space. cavity,

The light energy receiver 1-3-1 is installed on the back of the reflective surface of the large plane reflector 1-1-1, and the light incident circular hole of the spherical hollow heat conduction cavity 5-1 is facing the large plane reflector 1-1-1 The light incident slit of the spherical hollow heat conducting cavity 5-1 is facing the reflective surface of the rotating parabolic reflector 1-2-1, the center of the light incident circular hole of the spherical hollow heat conducting cavity 5-1 and The spherical center of the hemispherical transparent light guide cover 6-1 coincides with the focus of the rotating parabolic reflector 1-2-1, and the focus of the rotating parabolic reflector 1-2-1 is located at the light of the large plane reflector 1-1-1 on the incident slit,

When sunlight is incident perpendicular to the plane transparent cover plate 4-1, the incident light can pass through the large plane reflector 1-1-1 and the reflection focusing of the rotating parabolic reflector 1-2-1 through the large plane reflector 1- The light incident slit of 1-1 and the light incident round hole of the spherical hollow heat conduction cavity 5-1 are irradiated on the spherical solar panel 10-1, and part of the light energy irradiated on the spherical solar panel 10-1 passes through the spherical surface The solar panel 10-1 is converted into electrical energy, and the other part of the light energy is converted into heat energy through the spherical hollow heat conducting cavity 5-1, because the hemispherical transparent light guide cover 6-1 and the spherical hollow heat conducting cavity 5-1 form a closed cavity, and the light incident round hole of the spherical hollow heat conduction cavity 5-1 is very small, most of the light energy of the light incident circular hole entering the spherical hollow heat conduction cavity 5-1 is converted into electric energy and heat energy in the closed cavity, Therefore, the photoelectric and photothermal conversion efficiency of the light energy receiver 1-3-1 is greatly improved. The structure, size and light energy receiving mechanism of the above-mentioned solar energy concentration receiving mechanisms are the same as those of the first solar energy concentration receiving mechanism.

Claims (1)

1. the closed sphere lighting solar of secondary reflection hot water TRT, by rectangular box, water tank, cold water pipe, hot-water line, the planar transparent cover plate, big plane mirror and Salar light-gathering receiving mechanism constitute, each Salar light-gathering receiving mechanism all is made of a paraboloid of revolution reflective mirror and a luminous energy receiver, the luminous energy receiver of each Salar light-gathering receiving mechanism is by a spherical hollow heat conduction cavity, a sphere solar panel and a hemisphere face transparent light guide lid constitute, it is characterized in that: each luminous energy receiver of organizing the Salar light-gathering receiving mechanism is installed in the back side of reflective surface of the big plane mirror of this group, the sphere solar panel close adhesion of each luminous energy receiver is on the surface of the spherical hollow heat conduction cavity of this luminous energy receiver and the center of circle of the light incident circular hole on spherical hollow heat conduction cavity and the sphere solar panel is overlapped, the sphere solar panel close adhesion of each luminous energy receiver is on the surface of the spherical hollow heat conduction cavity of this luminous energy receiver and the center of circle of the light incident circular hole on spherical hollow heat conduction cavity and the sphere solar panel is overlapped, each organizes the reflective surface of light incident circular hole over against the light incident circular hole of the light entrance slit of the big plane mirror of this group and each spherical hollow heat conduction cavity over against this paraboloid of revolution reflective mirror of each spherical hollow heat conduction cavity of the luminous energy receiver of Salar light-gathering receiving mechanism, the focus of the centre of sphere of the center of circle of the light incident circular hole of the spherical hollow heat conduction cavity of the luminous energy receiver of each Salar light-gathering receiving mechanism and hemisphere face transparent light guide lid and the paraboloid of revolution reflective mirror of this Salar light-gathering receiving mechanism overlaps, each focus of organizing the paraboloid of revolution reflective mirror of Salar light-gathering receiving mechanism is positioned on the light entrance slit of big plane mirror of this group

When sunshine during perpendicular to the incident of planar transparent cover plate, incident ray by each group Salar light-gathering receiving mechanism big plane mirror and the reflect focalization of paraboloid of revolution reflective mirror after can both pass the light entrance slit of big plane mirror and the light incident circular hole of spherical hollow heat conduction cavity is radiated on the sphere solar panel of each luminous energy receiver, a luminous energy part that is radiated on the sphere solar panel of each luminous energy receiver is converted to electric energy by the sphere solar panel, another part of luminous energy is converted to heat energy by the spherical hollow heat conduction cavity of each luminous energy receiver, hemisphere face transparent light guide lid and closed cavities of spherical hollow heat conduction cavity formation because of each luminous energy receiver, and the light incident circular hole of each spherical hollow heat conduction cavity is very little, the luminous energy major part that enters the light incident circular hole of each spherical hollow heat conduction cavity changes electric energy and heat energy in closed cavities, therefore significantly improved the photoelectricity and the photo-thermal conversion ratio of each luminous energy receiver.

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