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Reflection mirror and solar groove type heat collector adopting the same

A technology of trough collectors and reflectors, which is applied in the field of solar energy, can solve problems such as the use of secondary reflectors, and achieve the effects of increased reliability, easy production process, and reduced optical accuracy.

Active Publication Date: 2010-01-20
WEIHAI GOLDEN SUN SOLAR THERMAL POWER GENERATION EQUIP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, secondary reflectors are not used in commercial trough collectors

Method used

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  • Reflection mirror and solar groove type heat collector adopting the same
  • Reflection mirror and solar groove type heat collector adopting the same
  • Reflection mirror and solar groove type heat collector adopting the same

Examples

Experimental program
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Effect test

Embodiment Construction

[0070] The structure of the heat collector of the present invention is as Image 6 As shown, where CPC 1 includes a secondary reflector and a steel receiving tube, the primary reflector 2 is made of silver-plated low-iron glass, part 3 is a steel structure supporting the primary reflector, part 4 is a steel structure pillar, and part 5 It is a reinforced concrete base. Part 6 is the torque box.

[0071] Figure 7 It is an inclined trough collector, and the rotation axis 7 for tracking the sun's rays is different from the inclination angle. In this case the axis of rotation is horizontal, the angle of inclination is 8 degrees, and the two are not coplanar. This structure is oriented north-south to generate more energy in winter.

[0072] The principle diagram of the present invention is as Figure 8 As shown, there is a large gap between the receiver tube and the secondary reflector. The curvature of the primary reflector is slightly larger than the parabola, including th...

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Abstract

The invention discloses a reflecting mirror and a solar tank heat collector adopting the reflecting mirror, and belongs to the technology field of the solar energy. The primary reflecting mirror of the invention comprises at least two of the following three reflecting surfaces: a first reflecting surface and second and third reflecting surfaces positioned on the left and right sides of the first reflecting surface. The first reflecting surface adopts the structure that direct light rays are reflected to a first focal line; the second reflecting surface adopts the structure that the direct light rays are reflected to the right side of the first focal line; and the third reflecting surface adopts the structure that the direct light rays are reflected to the left side of the first focal line. The tank heat collector comprises the primary reflecting mirror, a secondary reflecting mirror and a receiving pipe, wherein partial direct light rays are directly reflected to the receiving pipe via the primary reflecting mirror to form the first focal line; and partial direct light rays are reflected onto the secondary reflecting mirror via the primary reflecting mirror, and then reflected to the receiving pipe to form another one or a plurality of focal lines. The tank heat collector has the advantages that the light gathering efficiency is improved, the service life of the component is prolonged, the cost is saved, and the tank heat collector has broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of solar energy, and in particular relates to a reflector for collecting sunlight and a solar heat collector using the reflector. technical background [0002] Solar trough collectors consist of rectilinear reflectors, mostly rectilinear paraboloids, which usually rotate around their center of gravity to track the sun and reflect solar radiation onto rectilinear receivers. This receiver can have several shapes, but due to mechanical considerations, it is mostly a cylindrical tube with a liquid circulating through the receiver, so that the heat collected by the receiver is transferred to the application by the liquid flow. In most cases, the receiver is a steel pipe coated with a spectrally selective absorbing film that absorbs most of the solar radiation and substantially reduces radiative heat loss. [0003] One or more layers of glass envelopes enclosing the receiver can further reduce heat loss from the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/08F24J2/10G02B7/198F24S10/40F24S23/70F24S23/71F24S23/79F24S50/20
CPCF24J2002/1042F24J2/1047F24J2/18F24J2/07F24J2/14Y02E10/47F24J2/54F24S23/80F24S23/74F24S23/79F24S20/20F24S30/40F24S2023/838
Inventor 约翰·文
Owner WEIHAI GOLDEN SUN SOLAR THERMAL POWER GENERATION EQUIP CO
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