CN201187900Y

CN201187900Y - Reflexion-reducing solar vacuum tube collector

Info

Publication number: CN201187900Y
Application number: CNU2008200795992U
Authority: CN
Inventors: 韩建功; 谢光明; 范国辉
Original assignee: BEIJING SOLAR ENERGY INST Co Ltd
Current assignee: BEIJING SOLAR ENERGY INST Co Ltd
Priority date: 2008-03-27
Filing date: 2008-03-27
Publication date: 2009-01-28
Anticipated expiration: 2018-03-27

Abstract

The utility model relates to a dereflection solar energy vacuum tube heat collecting device which is especially designed for further increasing the heat efficiency of the heat collecting device. The heat collecting device is composed of a dereflection solar energy glass vacuum tube, a dereflection layer can effectively reduce the reflectivity of the glass, and the luminousness of the dereflection solar energy glass vacuum tube can be increase by 5 percent compared to an ordinary glass tube. The dereflection thin layer can be firmly combined with the glass, has good wear-resisting property, and can make the solar energy vacuum tube heat collecting device have perfect resistance to elements and self clearing function.

Description

The antireflective solar energy vacuum tube heat collector

Technical field

The utility model relates to technical field of solar, is a kind of antireflective solar energy vacuum tube heat collector specifically.

Background technology

Solar energy vacuum tube heat collector was developed successfully in China the beginning of the eighties, and mass marketed.Nowadays the solar water heater year sales volume of China occupies first place in the world, and wherein solar energy vacuum tube heat collector at home and abroad is widely used.Experiencing closing-sunning type, plate glass formula and after three megastages of vacuum manifold formula heat collector, China's solar thermal collector formation industry that taken the lead in, core component constantly is improved, improves and upgrades.

High-efficiency flat type solar heat collector of today has been extensive use of the anti reflection glass cover plate, because anti reflection glass is low to the reflectivity of sunshine, transmitance is strong, can bring up to 96% by 91% of common white glass, optical property is good, and the heat collector thermal efficiency significantly improves.

Summary of the invention

The purpose of this utility model just provides a kind of antireflective solar energy vacuum tube heat collector, is about to the anti reflection glass technology and is applied to vacuum tube, makes the heat collector thermal efficiency be able to further significantly improve.

The utility model is achieved in that

Vacuum tube solar heating element is made up of the antireflective solar energy vacuum tube, on this glass evacuated tube-surface, the antireflective thin layer that is prepared into through handling is arranged.

Solar energy anti reflection glass vacuum tube after treatment, the refractive index of glass surface thin layer changes, through calculating and test shows, the antireflection layer that the glass tube surface generates can effectively reduce the reflectivity of glass, makes the light transmittance of anti reflection glass vacuum tube improve 5% than the simple glass pipe.Facts have proved that this antireflective thin layer can combine securely with glass, anti-wear performance is very good.In addition, antireflective solar energy glass vacuum pipe also has fabulous weather resistance and self-cleaning function.

Description of drawings

Fig. 1 is an antireflective solar energy vacuum tube cutaway view.

Fig. 2 is an antireflective metal absorber solar energy heat collection pipe schematic diagram.

Fig. 3 is the full glass type vacuum tube of an antireflective schematic diagram.

Fig. 4 is an antireflective solar energy vacuum tube heat collector schematic diagram.

The specific embodiment

2-4 is further described the utility model below in conjunction with accompanying drawing:

In order to reduce the glass surface light reflectivity, can adopt etch method, vacuum deposition method and hot spray process etc. that glass surface is carried out the antireflective PROCESS FOR TREATMENT, preparation antireflective thin layer, the feasible reflectivity that reduces glass effectively.

With the etch method is example: be meant that using the acidleach chemical treatment prepares anti reflection glass, technological process is roughly as follows:

Original sheet glass → washing → drying → immersion acid solution → washing → oven dry (or natural air drying) → detection (light transmittance, reflectivity and thickness) → pack → dispatch from the factory.

This process can make the glass light transmittance improve 4% ~ 5% than original, brings up to 85% as 3 millimeters normal optical transmitances by original 80%, the white matter glass that transmitance is higher, and light transmission rate can bring up to 95% from original 90%.

Figure 2 shows that antireflective metal absorber solar energy heat collection pipe, comprise heat pipe-type, single flow, through type and U type tubular type or the like, handle, make antireflective thin layer 1 on thermal-collecting tube 2 surfaces through the over etching method.

Figure 3 shows that full glass type vacuum tube, handle, make antireflective thin layer 1 on vacuum tube 2 surfaces through vacuum deposition method.

Figure 4 shows that antireflective solar energy vacuum tube heat collector 3, this heat collector 3 is by being made up of the glass-vacuum tube 2 of antireflective thin layer 1.

Claims

1. antireflective solar energy vacuum tube heat collector is characterized in that this heat collector (3) is made up of antireflective solar energy glass vacuum pipe (2), on this glass-vacuum tube (2) surface, the antireflective thin layer (1) that is prepared into through handling is arranged.