CN212962250U

CN212962250U - Spherical cavity structure capable of efficiently collecting solar radiation energy

Info

Publication number: CN212962250U
Application number: CN202021502562.3U
Authority: CN
Inventors: 方诗标
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-04-13
Anticipated expiration: 2030-07-27

Abstract

The utility model provides a can collect spherical cavity structure of solar radiation energy high-efficiently, include the heat absorption bottom plate, install hemisphere frame on the heat absorption bottom plate and lay the oval concave mirror of reflection of heat absorption bottom plate bottom, hemisphere frame surface is paved with fresnel lens, the heat absorption bottom plate is the spill structure, the top of hemisphere frame is equipped with steam outlet, the leakage fluid dram that is linked together has on heat absorption bottom plate and the oval concave mirror of reflection. The spherical cavity structure can receive solar radiation without dead angles, can track sunlight, realizes uninterrupted light gathering and heat collecting, and meets the lighting and heat collecting requirements of users.

Description

Spherical cavity structure capable of efficiently collecting solar radiation energy

Technical Field

The utility model relates to a new forms of energy field especially relates to a spherical cavity structure that can high-efficiently collect solar radiation energy.

Background

Solar energy, i.e. the heat radiation energy of the sun, is a renewable energy source and is mainly expressed in the form of solar rays. Today, the demand for energy is increasing, and solar radiation energy is widely applied to power generation, desalination and heat supply of household water heaters. In order to effectively utilize solar radiation energy, many researchers use an external sunlight-collecting heat collector to improve the performance of solar collection, and a solar vacuum tube, a flat-plate solar heat collector and the like are common. The utility model provides a but spherical cavity structure of high-efficient collection solar radiation energy aims at when collecting solar radiation energy and sunlight with the high efficiency, reduces the cost of sunlight heat collector.

At present, a heat collector capable of efficiently collecting solar energy has several structures such as a dish-shaped heat collector, a parabolic condenser, a linear Fresnel lens and the like. For example, concave surface formula solar collector, this kind of heat collector not only can improve the thermal efficiency, can also reduce solar collector's area simultaneously. As another example, a linear fresnel lens based concentrating solar collector has higher thermal efficiency at relatively high temperature levels than flat plate or evacuated tube collectors. According to literature research, researches show that distillers with adjustable reflecting plate inclination angles, spherical solar distillers integrated with parabolic reflectors and flat heat collectors combined with a cooling system of the solar distillers are highly concerned by researchers.

In summary, the structures of the several solar thermal collectors can be summarized as follows: (1) bowl-dish type, (2) linear type, (3) parabolic type, and (4) planar type. Bowl dish and parabolic structures can represent the highest efficiency solar radiation energy collection devices on the market today, however, both bowl dish and parabolic require ultra high manufacturing costs. The linear and planar structures are known for their low cost, but have the disadvantage of a large reduction in the effect of concentrating solar heat. Accordingly, the applicant has proposed a spherical cavity structure for efficient collection of solar radiation energy, the structure having a plurality of annularly surrounding fresnel lenses; the spherical cavity can receive solar radiation without dead angles, can track sunlight, realizes uninterrupted light gathering and heat collecting, and meets the lighting and heat collecting requirements of users. The utility model discloses a can collect solar radiation energy with high efficiency, efficiency far exceeds the energy collection efficiency of general heat collector to cost control is at the moderate level, belongs to the solar radiation energy collection device of high price/performance ratio, has certain market. In addition, by exploring the relationship between the characteristics and the structure of the gas-liquid two-phase flow in the spherical cavity, the spherical structure is improved, optimized and innovated, and two types of spherical structures are provided to meet the requirements of different industrial processes.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a but spherical cavity structures of high-efficient collection solar radiation energy need not sunlight tracer and just can realize all-round collection solar radiation energy, has got rid of a large amount of auxiliary assembly reduce costs to solve the solar radiation energy collection device problem with high costs that exists now.

The utility model provides a technical scheme that its technical problem adopted is:

the embodiment of the utility model provides a can collect spherical cavity structure of solar radiation energy high-efficiently, include the heat absorption bottom plate, install hemisphere frame on the heat absorption bottom plate and lay the oval concave mirror of reflection of heat absorption bottom plate bottom, hemisphere frame surface is paved with fresnel lens, the heat absorption bottom plate is the spill structure, the top of hemisphere frame is equipped with steam outlet, the leakage fluid dram that is linked together has on heat absorption bottom plate and the oval concave mirror of reflection.

Further, the heat absorption bottom plate is made of titanium metal.

Further, the light rays of the Fresnel lens are gathered on the concave surface of the heat absorption bottom plate.

Further, the top shape of the hemispherical frame adopts a triangular top or a plane top.

Further, the hemispherical frame is a simulated football structure.

Compared with the background technology, the invention has the following beneficial effects:

(1) the Fresnel lens is fully paved on the surface of the hemispherical frame, so that sunlight can be received without dead angles, and uninterrupted light and heat collection can be realized without installing a sunlight tracking device;

(2) the concave surface of the heat absorption bottom plate receives light rays focused by the Fresnel lens, and the convex surface of the heat absorption bottom plate receives light rays reflected by the reflecting elliptic concave mirror, so that the utilization rate of sunlight is further improved, solar radiation energy can be efficiently collected, and the lighting and heat collecting capacity is higher than that of a common flat plate collector and a vacuum tube collector;

(3) this application is low in manufacturing cost not only, and energy utilization is rateed highly, compares with prior art moreover, and work efficiency obtains obviously promoting, has extensive market prospect.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a structural diagram of a spherical cavity capable of efficiently collecting solar radiation energy according to an embodiment of the present invention;

FIG. 2 is a structural view of a semispherical frame in the present embodiment;

FIG. 3 is a schematic diagram of the optical path delivery of the concentrated solar radiation in this embodiment;

FIG. 4 is a view showing two forms of the shape of the top of the spherical cavity in the present embodiment, wherein (a) is a flat top and (b) is a triangular top;

in the figure: the solar heat collector comprises a hemispherical frame 1, a heat absorption bottom plate 2, a Fresnel lens 3, a steam outlet 4 and a reflection elliptic concave mirror 5.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1-2, this embodiment provides a spherical cavity structure capable of collecting solar radiation energy with high efficiency, including heat absorption bottom plate 2, install hemisphere frame 1 on the heat absorption bottom plate 2 and lay the elliptic concave mirror 5 of reflection of heat absorption bottom plate 2 bottom, fresnel lens 3 is paved on hemisphere frame 1 surface, heat absorption bottom plate 2 is the concave structure, hemisphere frame 1's top is equipped with steam outlet 4, the leakage fluid dram that is linked together has on heat absorption bottom plate 2 and the elliptic concave mirror 5 of reflection.

In this embodiment, the heat absorption bottom plate 2 is made of titanium metal, can prevent from being corroded by salt water, and the surface is coated with the heat absorption coating, so that the efficiency of absorbing light and heat is enhanced. The heat absorption bottom plate 2 is of a concave structure, the concave surface of the heat absorption bottom plate 2 receives light focused by the Fresnel lens 3, and the convex surface receives light reflected by the reflection elliptic concave mirror 5.

In this embodiment, the fresnel lens 3 has different focal lengths according to different positions, and focuses light on the heat absorption bottom plate 2. After the spherical cavity is irradiated by the Fresnel lens 3 in a light gathering way, the temperature is rapidly increased or reaches the ignition point, and the solar radiation energy can be efficiently utilized.

Fig. 3 shows that the east fresnel lens 3 starts to operate when sunlight is present in the east, whereas the west fresnel lens 3 starts to operate when sunlight is present in the west. And finally, the solar radiation energy can be tracked and collected in 360 degrees without dead angles. A reflecting elliptic concave mirror 5 is additionally arranged at the bottom, and the sunlight is focused on the convex surface of the heat absorption bottom plate 2 through the reflection action.

In this embodiment, the hemispherical frame 1 is an artificial football structure and is composed of a plurality of polygonal lenses; the Fresnel lens is adopted as the lens, and the Fresnel lens has the advantages of light weight, good lighting effect and stable performance. The working performance of the spherical cavity is mainly related to structural parameters such as Fresnel lens, spherical shell thickness, top shape and the like, for example, Elango and Kalidasa Murugaivel (2015) researches compare the characteristics of a flat-top solar distiller and a triangular top solar distiller, and the conclusion is that the flat-top structure has high fresh water production rate in a temperature rise period and the triangular top structure has high fresh water production rate in a temperature fall period; el Sebaii et al (2015) studied the effect of fresnel lenses on solar desalination plants and found that fresnel lens focal length is directly proportional to productivity, while lens thickness and number are inversely proportional to productivity; edoja et al (2015) considered the effect of different cover thicknesses on solar radiation collection and the results of the study showed that glass thicknesses below 4 mm allowed for maximum production of the concentrator device. The above factors are taken into account in the design, and are influenced by weather conditions, in particular solar radiation. The top shape of the hemispherical frame 1 adopts a flat top ((a) in fig. 4) or a triangular top ((b) in fig. 4).

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a but spherical cavity structures of high-efficient collection solar radiation energy, its characterized in that includes the heat absorption bottom plate, installs hemisphere frame on the heat absorption bottom plate and lay the oval concave mirror of reflection of heat absorption bottom plate bottom, hemisphere frame surface is paved with fresnel lens, the heat absorption bottom plate is the spill structure, the top of hemisphere frame is equipped with steam outlet, the leakage fluid dram that is linked together has on heat absorption bottom plate and the oval concave mirror of reflection.

2. The spherical chamber structure for collecting solar radiation energy with high efficiency as claimed in claim 1, wherein said heat absorbing bottom plate is made of titanium metal.

3. The spherical cavity structure for collecting solar radiation energy with high efficiency as claimed in claim 1, wherein the light rays of said fresnel lens are concentrated on the concave surface of the heat absorbing base plate.

4. The spherical cavity structure for collecting solar radiation energy with high efficiency as claimed in claim 1, wherein the shape of the top of said hemispherical frame is triangular or flat.

5. A spherical chamber structure for efficient collection of solar radiation according to claim 1 and wherein said hemispherical frame is a simulated football structure.