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Enveloped tube for solar collector

A technology for collectors and envelope tubes, applied in the field of envelope tubes for solar collectors, can solve the problems of not reaching the interception coefficient and achieve the effect of cost reduction

Inactive Publication Date: 2010-06-16
SCHOTT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So all in all there is not much improvement in the intercept coefficient

Method used

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  • Enveloped tube for solar collector
  • Enveloped tube for solar collector
  • Enveloped tube for solar collector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] figure 1 A parabolic mirror 1 and a receiving tube 2 are shown, wherein the receiving tube 2 is arranged at the focal point of the parabolic mirror 1 . Radiation rays always enter from the side facing the sun in the direction of the law, because the reflector 1 and the receiving tube 2 are guided precisely by following the position of the sun. On the side of the receiver tube 2 facing the mirror 1, the radiation is incident at an angle between 160° and 180°. The incident angles of the radiation are indicated by arrows.

[0035] figure 2A receiver tube 2 is shown, which consists of an envelope tube 3 and an absorber tube 4 . The so-called radiation beams 5, 5' and 6 refer to the near-axis radiation 6 and the far-axis radiation 5, 5', the latter passing through the envelope tube 3 without encountering the absorber tube 4.

[0036] image 3 The focus error due to mirror deformation is shown exemplarily in . Losses mainly occur on the outside of the parabolic mirror ...

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PUM

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Abstract

The parabolic trough collector includes a single-axis parabolic mirror (1) and a receiver tube (2) arranged at the focal point (F) of the parabolic mirror (1). The receiver tube (2) includes an absorber tube (4) and an outer tubular glass jacket (3) around it. To compensate for focusing errors in the parabolic collector and thus to reduce associated geometric optical losses, the tubular jacket (3)is provided with structural elements (9a, 9b, 9c), which focus the sunlight on the absorber tube (4) arranged in the tubular jacket (3) by reflection and / or refraction.

Description

technical field [0001] The invention relates to an envelope tube for solar collectors, in particular for parabolic trough collectors. In addition, the invention also relates to a receiving pipe and a parabolic trough collector. Background technique [0002] Parabolic trough collectors consist of a uniaxial parabolic shaped mirror and a receiver tube positioned at the focal point of the parabolic mirror. The width of the reflector is generally 5 to 6 meters. The receiver tube consists of an inner sub-tube, also called absorber tube, which is preferably coated according to the solar radiation, and an outer envelope tube made of glass for insulation. Both the reflector and the receiving tube are guided by tracking the sun's journey, so the sunlight is always irradiated according to the normal direction of the opening plane, and the most ideal is to guide all the solar radiation incident on the reflector to the receiving tube . [0003] For various reasons, focusing errors c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24J2/06F24J2/50F24J2/48F24J2/10F24J2/14F24J2/07F24S20/20F24S23/00F24S23/30F24S23/70F24S23/71F24S23/74
CPCF24J2/08F24J2/14Y02E10/41F24J2/062Y02E10/45F24J2/07F24S20/20F24S23/10F24S23/30F24S23/74Y02E10/40
Inventor T·库克尔科恩
Owner SCHOTT AG