Solar evacuated tube

A technology of vacuum heat collecting tube and solar energy, which is applied in the field of solar energy, can solve the problems of thermal expansion and elongation, easy to burst, small diameter, easy to foul and block, etc., and achieve the effect of solving the expansion and contraction effect and improving the expansion and contraction rate

Pending Publication Date: 2019-11-19
ZHEJIANG KEJIE NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Thermal expansion and elongation are easy to burst, and small diameters are easy to foul and block

Method used

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  • Solar evacuated tube
  • Solar evacuated tube
  • Solar evacuated tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] figure 1 It is a cross-sectional view of the solar vacuum heat collecting tube 100 provided in Embodiment 1 of the present invention.

[0056] Please refer to figure 1 , a solar vacuum heat collecting tube 100, comprising a glass inner tube 10 and a glass outer tube 11, the glass outer tube 11 is sleeved on the glass inner tube 10;

[0057] The glass outer tube 11 and / or the glass inner tube 10 are provided with concavo-convex corrugated grooves 12 .

[0058] It is worth noting that the solar vacuum heat collection tube 100 is provided with concave-convex corrugated grooves 12 on the glass outer tube 11 and / or glass inner tube 10, so that when the glass inner tube 10 absorbs sunlight and converts heat energy, the concave-convex corrugated grooves 12 It plays a stretching role when thermal expansion elongates, so as to avoid thermal expansion that may easily cause the solar vacuum heat collecting tube 100 to burst. The structure is reasonable in design and strong in pr...

Embodiment 2

[0073] image 3 A cross-sectional view of the solar vacuum heat collecting tube 100 provided by Embodiment 2 of the present invention.

[0074] Figure 4 A cross-sectional view of the solar vacuum heat collecting tube 100 provided for Embodiment 2 of the present invention.

[0075] Please refer to image 3 and Figure 4 , In Embodiment 2, the concave-convex corrugated groove 12 is provided on the glass outer tube 11 . The joint between the glass outer tube 11 and the concave-convex corrugated groove 12 is the second connecting section 15, and the second connecting section 15 is arc-shaped.

[0076] It is worth noting that the connection between the glass outer tube 11 and the concave-convex corrugated groove 12 is set as an arc, which can avoid the sharp connection between the concave-convex corrugated groove 12 and the glass outer tube 11. When the temperature rises, the thermal expansion coefficient elongates A buffer effect is played to prevent the solar vacuum heat co...

Embodiment 3

[0081] Figure 5 A cross-sectional view of the solar vacuum heat collecting tube 100 provided in Embodiment 3 of the present invention.

[0082] Figure 6 A cross-sectional view of the solar vacuum heat collecting tube 100 provided for Embodiment 3 of the present invention.

[0083] Please refer to Figure 5 and Figure 6 , In Embodiment 2, the concave-convex corrugated groove 12 is arranged on the glass outer tube 11 and the glass inner tube 10 .

[0084] The concave-convex corrugated groove 12 on the glass inner tube 10 is located inside the cross section of the glass inner tube 10;

[0085] The concave-convex corrugated groove 12 on the glass outer tube 11 is located outside the cross section of the glass outer tube 11 .

[0086] It is worth noting that arranging the concave-convex corrugated groove 12 inside the cross section of the glass inner tube 10 can ensure a constant distance between the glass inner tube 10 and the glass outer tube 11, and at the same time prev...

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Abstract

The invention relates to a solar evacuated tube and belongs to the technical field of solar energy. The solar evacuated tube comprises a glass inner tube and a glass outer tube. The glass inner tube is sleeved with the glass outer tube. The glass outer tube and / or the glass inner tube are / is provided with a concave-convex wavy groove. According to the solar evacuated tube, the glass outer tube and / or the glass inner tube are / is provided with the concave-convex wavy groove, so that the glass inner tube coated with a selective film layer absorbs sunlight and convert the sunlight into heat energy; the concave-convex wavy groove on a tube body expands when heated and then elongates to achieve the stretching and contracting effect. Accordingly, the situation that a solar evacuated tube burst easily due to heat expansion is avoided. The solar evacuated tube is reasonable in structure design and high in practicality.

Description

technical field [0001] The invention relates to the technical field of solar energy, in particular to a solar vacuum heat collecting tube. Background technique [0002] At present, domestic and foreign solar energy utilization technologies have been widely used, involving domestic and industrial hot water, heating, cooling, drying, seawater desalination, photothermal power generation, etc. [0003] As the core component in solar energy utilization technology, solar vacuum heat collector has the function of light and heat transfer. In the prior art, there are the following types of all-glass solar vacuum heat collector tubes: (1) All-glass solar vacuum heat collector tube with single-ended opening; (2) Fully enclosed double-vacuum all-glass solar heat collector tube; ; ⑷. One end has a large opening, and the other end has a small opening. The small end uses a small-sized glass tube to bend into a spiral shape to connect the inner and outer tubes. [0004] Among them, No. 3 ...

Claims

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Application Information

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IPC IPC(8): F24S10/40F24S10/70F24S70/60F24S40/46
CPCF24S10/40F24S10/70F24S70/60F24S40/46Y02E10/44
Inventor 董子良
Owner ZHEJIANG KEJIE NEW MATERIAL
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