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Vacuum solar thermal panel with radiative screen

A solar panel and vacuum heating technology, applied in solar thermal energy, solar thermal power generation, solar collectors, etc., can solve problems such as increasing panel production costs and limiting the maximum operating pressure of heat medium fluids

Active Publication Date: 2012-11-14
TVP SOLAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to limit the loss of heat energy radiated by the tubes, the tubes are preferably made of copper (a material with low infrared emission), but this significantly increases the panel production costs, or limits the maximum operating pressure of the heat medium fluid
[0008] An additional problem is that the weld between the tube and the absorber requires care when arranging said parts due to the very small contact surface area, especially in the case of laser welding where the transverse dimension of the weld is very small

Method used

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  • Vacuum solar thermal panel with radiative screen
  • Vacuum solar thermal panel with radiative screen
  • Vacuum solar thermal panel with radiative screen

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Embodiment Construction

[0022] figure 1 A perspective view showing a double sided vacuum thermal solar panel. This solar panel comprises a vacuum-tight envelope 30 capable of withstanding atmospheric pressure when evacuated, comprising first and second mutually facing glass panels 1 , 2 transparent to solar radiation. The first and second glass sheets define the two active surfaces of the solar panel. A single-sided panel has a single pane of glass, while the second pane facing the first can be made of metal. The double-sided panels have two facing panes of glass to increase thermal energy production, and where the second pane of glass is traversed by solar radiation reflected by the mirror.

[0023] as from figure 2 As can also be seen in the exploded view, the vacuum-tight enclosure 30 is laterally delimited by the peripheral metal frame 3 . The perimeter frame 3 is connected to the glass panels 1, 2 by flexible metal strips 4, 5 which are connected to the perimeter frame 3 by welding, brazing...

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Abstract

A double-sided vacuum thermal solar panel comprising a vacuum-tight envelope (30) capable of withstanding atmospheric pressure when evacuated, said envelope (30) comprising a first and a second glass sheet (1, 2) transparent to solar radiation and facing each other, a perimetral frame (3) defining the lateral surface of said envelope (30), said solar panel comprising at least one first heat absorber (11), a second heat absorber (12), a pipe (13) which enters and leaves said envelope (30) by passing between said first and second heat absorber (11, 12), and a box element (10) which surrounds the outer surface of the pipe (13).

Description

technical field [0001] The invention relates to a double-sided vacuum thermal solar panel according to the preamble of the main claim. Background technique [0002] Double-sided vacuum thermal solar panels are used to absorb solar radiation from two active surfaces, either directly receiving sunlight or receiving sunlight reflected by mirrors. These are known, for example, from EP0387843, DE10306532, DE20319299U1, EP1342964, DE20220874. [0003] EP0387843 relates to a solar panel comprising a vacuum-tight envelope formed of two glass panes transparent to solar radiation. One or more heat absorbers are arranged within the enclosure to absorb solar radiation by converting it into thermal energy. A heat absorber is usually a rectangular sheet of metal made of copper, aluminum, or other metal with high thermal conductivity and low infrared emissivity, covered with a selectively absorbing coating that is highly absorbing in the visible but transparent to infrared radiation (e.g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24J2/05F24J2/26F24S10/40F24S10/50F24S10/75
CPCY02E10/44F24J2/05F24J2/0494F24J2/265F24S40/46F24S70/65F24S10/40F24S10/753
Inventor V·帕尔米耶里
Owner TVP SOLAR