CN102128507A

CN102128507A - Concave-convex lens solar vacuum tube

Info

Publication number: CN102128507A
Application number: CN201110099215XA
Authority: CN
Inventors: 刘建光
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-20
Filing date: 2011-04-20
Publication date: 2011-07-20

Abstract

The invention discloses a concave-convex lens solar vacuum tube. The tube comprises an outer glass tube and an inner glass tube, wherein a U-shaped tube is arranged in an inner cavity of the inner glass tube along the length direction of the inner cavity of the inner glass tube; a heat-conducting chemical medium is arranged in the U-shaped tube; a heat-absorbing plate is connected between two straight tubes of the U-shaped tube and transfers heat to the chemical medium; the circumferential surface of a sunward part of the inner glass tube is provided with a concave-convex lens; and the focus of the concave-convex lens falls on the heat-absorbing plate. Sunlight heat is focused and amplified by the concave-convex lens, the heat-absorbing plate transfers the heat to the chemical medium in the U-shaped tube, and water in a vapor tank is indirectly heated by the chemical medium to be turned into water vapor, so that the water vapor at the intermediate temperature of higher than 132.5 DEG C can be obtained for power generation.

Description

Concavo-convex mirror solar energy vacuum tube

Technical field:

The present invention relates to a kind of concavo-convex mirror solar energy vacuum tube.

Background technology:

The vacuum tube that present solar water heater is used, mostly as shown in Figure 2, form by the layer glass pipe, vacuumize between outer layer glass tube 1 and the inner layer glass tube 2, sexine at inner layer glass tube 2 is sprayed with heat absorbing coating 3, absorbing sunlight heat, at the inner-wall spraying of inner layer glass tube 2 reflectance coating 4 is arranged, prevent that the sunlight heat that absorbs scatters and disappears.Problem is, the hot water in summer can reach 100 the degree more than, season in severe winter water temperature 30 the degree below, and throughout the year water temperature difference 50 the degree---70 the degree about, can't balancedly obtain the above middle warm water of 132.5 degree, can not guarantee that the more long-term balanced water vapour that obtains is used for generating.

Summary of the invention:

For overcoming the defective of prior art, the object of the present invention is to provide a kind of concavo-convex mirror solar energy vacuum tube, by concave and convex lenses sunlight heat is focused on amplification, by absorber plate heat is transferred to chemical mediator in the U type pipe, chemical mediator becomes water vapour with the water indirect in the vapor can, so that obtain the above middle heated steam generating of 132.5 degree.

Technical solution problem of the present invention adopts following technical scheme:

Concavo-convex mirror solar energy vacuum tube, comprise outer layer glass tube and inner layer glass tube, inner chamber at described inner layer glass tube is provided with U type pipe along its length direction, and in described U type pipe, be provided with the heat conduction chemical mediator, be connected with absorber plate between two straight tubes of described U type pipe, and form the heat conduction between described absorber plate and the described chemical mediator;

Described inner layer glass tube be concave and convex lenses to the male portion periphery, the focus of described concave and convex lenses falls within on the described absorber plate.

Design feature of the present invention also is:

The inwall of described inner layer glass tube is provided with reflectance coating.

Described absorber plate is curved, and is provided with heat absorbing coating at absorber plate on the cambered surface of described concave and convex lenses.

Compared with the prior art, beneficial effect of the present invention is embodied in:

1, solar energy vacuum tube of the present invention, the part that inner layer glass tube faces south is set to concave and convex lenses, because the effect of concave and convex lenses optically focused, the thermal power transfer effect of sunlight can be amplified, luminous energy focuses on the absorber plate, absorber plate can be given thermal energy transfer the heat conduction chemical mediator in the U type pipe, and the photo-thermal transformation efficiency is provided.

2, in the winter time, the angle of injecting of sunlight diminishes, and the light after concave and convex lenses focus on focuses mostly in the upper end of absorber plate, and rate of heat transfer is higher, can improve the temperature of heat conduction chemical mediator.Spring and autumn, sunlight to inject the angle extensive, photo-thermal is moderate, after the sunlight light process focusing amplification by concave and convex lenses, can make the chemical mediator temperature in the U type pipe higher, this U type pipe is applied in the applicant's the patent formerly " permutation and combination of U type pipe and overlaying structure (patent No. ZL2008101231629) in the solar water heater heat collection gate ", this heat collection gate be applied to the applicant in first to file " heated steam electricity generation system (201010285383.3) in the new forms of energy ", the chemical mediator that temperature is high can be transferred to the more steam of generation in the vapor can with heat by the heat transmission, allows the water vapour pushing turbine generate electricity.And ecliptic obliquity is 23.26 degree, and no matter how the four seasons change, and sunlight is by behind the concave and convex lenses, and the rate of illuminating on absorber plate is all more satisfactory.The inwall of inner layer glass tube adds the insulation reflectance coating, can prevent effectively that heat scatters and disappears, and prevents that severe cold areas and severe winter from freezing.

Description of drawings:

Fig. 1 is the cross-sectional configuration schematic diagram of vacuum tube of the present invention; Fig. 2 is the structural representation in existing solar energy vacuum tube cross section; Fig. 3 is for indicating the cross-sectional configuration schematic diagram of the vacuum tube of the present invention that lighting angle is arranged, and wherein A represents the lighting angle in time in the Summer Solstice, and B represents the lighting angle in time in Winter Solstice.

Number in the figure: 1 outer layer glass tube, 2 inner layer glass tubes, 3 heat absorbing coatings, 4 reflectance coatings, 5U type pipe, 6 chemical mediators, 7 absorber plates, 8 concave and convex lenses.

Below pass through the specific embodiment, and the invention will be further described in conjunction with the accompanying drawings.

The specific embodiment:

Embodiment: referring to Fig. 2,3, the concavo-convex mirror solar energy vacuum tube of present embodiment, comprise outer layer glass tube 1 and inner layer glass tube 2, inner chamber at described inner layer glass tube 2 is provided with U type pipe 5 along its length direction, and in described U type pipe, be provided with heat conduction chemical mediator 6, be connected with absorber plate 7 between two straight tubes of described U type pipe, and form the heat conduction between described absorber plate 7 and the described chemical mediator 6; Described inner layer glass tube 2 be concave and convex lenses 8 to the male portion periphery, the focus of described concave and convex lenses 8 falls within on the described absorber plate 7.

In specifically being provided with, the inwall of inner layer glass tube 2 is provided with reflectance coating 4.Described absorber plate 7 is curved, and is provided with heat absorbing coating 3 at absorber plate 7 on the cambered surface of described concave and convex lenses 2.

Claims

1. concavo-convex mirror solar energy vacuum tube, comprise outer layer glass tube (1) and inner layer glass tube (2), it is characterized in that, inner chamber at described inner layer glass tube (2) is provided with U type pipe (5) along its length direction, and in described U type pipe, be provided with heat conduction chemical mediator (6), be connected with absorber plate (7) between two straight tubes of described U type pipe, and form the heat conduction between described absorber plate (7) and the described chemical mediator (6);

Described inner layer glass tube (2) be concave and convex lenses (8) to the male portion periphery, the focus of described concave and convex lenses (8) falls within on the described absorber plate (7).

2. concavo-convex mirror solar energy vacuum tube according to claim 1 is characterized in that the inwall of described inner layer glass tube (2) is provided with reflectance coating (4).

3. concavo-convex mirror solar energy vacuum tube according to claim 1 is characterized in that described absorber plate (7) is curved, and is provided with heat absorbing coating (3) at absorber plate (7) on the cambered surface of described concave and convex lenses (2).