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INVENTION
Russian Federation Patent RU2210038
Solar systems
Name of the inventor: SS Anisimova .; KN Sviridov .; Shadrin VI
The name of the patentee: State Unitary Enterprise "SPA Astrophysics"
Address for correspondence:. 123424, Moscow, Volokolamskoye Highway 95, State Unitary Enterprise "SPA Astrophysics"
Starting date of the patent: 2001.11.14
The invention relates to solar energy and can be used in solar power plants to convert solar energy into electrical energy or power plant for personal use. In accordance with the invention in solar thermal system, comprising a support structure attached to it dvuhplechy lever and a cylindrical hub of a set of plane mirror facets, a linear receiver concentrated radiation, mounted on the lever on the focal line of the cylindrical hub, according to the invention from the back side of each flat mirror facets mounted rectangular prism edge at the right angle of which coincides with the central axis of the flat mirror facets, one of the two faces of the prism adjacent to this edge aligned with the plane of the mirror facets on the second face of the rectangular prism deposited reflective coating and a mirror coating flat facets performed window by shaped reflecting face projection on rectangular prism facet plane in the beam path parallel to the optical axis of the cylindrical hub incident on the back side of each facet. The invention should improve the effectiveness and efficiency of the mutual alignment of plane mirror facets with the host line receiver surface.
DESCRIPTION OF THE INVENTION
The invention relates to solar energy and can be used in solar power plants for converting solar energy into electricity, and moreover, can be used as power plant for individual use.
Known solar installations, containing various hubs with curved forming optically conjugated with the receiving surface of the solar energy absorbers [1-3].
A disadvantage of such devices is the uneven distribution of the concentrated solar radiation on the receiving surface sinks, which is especially critical, if the solar radiation receiver photoelectric converter is used.
The closest to the technical nature of the proposed invention, selected by the authors as a prototype, is solar power plant, comprising a support structure attached to it dvuhplechy lever and the cylindrical hub of a set of flat mirror facets, a linear receiver of the concentrated radiation, mounted on the arm at the focal line of the cylindrical hub [4 ].
This solar thermal system on the Line Receiver concentrated radiation incoming solar radiation from the flat mirror facets which form the cylindrical hub. Each facet provides uniform illumination of the line receiver, so the concentrated radiation supplied to the linear receiver with all the facets and will be uniform if provided high precision alignment of mutual facet and line receiver.
The disadvantage of this solar thermal system is the complexity of the mutual alignment of a large number of facets to the receiving surface of the linear receiver of the concentrated radiation.
With the help of the invention is achieved technical result consists in increasing the effectiveness and efficiency of the mutual alignment of plane mirror facets forming a cylindrical hub, with the host of the linear receiver surface.
In accordance with the present invention the technical result is achieved in that the solar thermal system, comprising a support structure attached to it dvuhplechy lever and a cylindrical hub of a set of plane mirror facets, a linear receiver concentrated radiation, mounted on the lever on the focal line of the cylindrical hub on the rear side of each flat mirror facets mounted rectangular prism, the edge at the right angle of which coincides with the central axis of the flat mirror facets, one of the two faces of the prism adjacent to this edge aligned with the plane of the mirror facets on the second face of the rectangular prism deposited reflective coating and a mirror coating flat facets performed box shaped reflecting face projection on rectangular prism facet plane in the beam path parallel to the optical axis of the cylindrical hub incident on the back side of each facet.
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1 schematically shows a general view of the solar thermal system.
Figure 2 is a diagram for explaining the principle set soyustirovki flat mirror facets with a linear receiver concentrated solar radiation.
Solar power plant comprises a supporting structure 1 on which are fixed dvuhplechy lever 2 and the cylindrical hub 3, consisting of a set of four flat mirror facets arranged in an arc of a parabola generator. concentrated radiation line receiver 5 is set to dvuhplechem lever 2 to the focal line of the concentrator 3 parabolotsilindricheskogo.
The back side of each flat mirror facets 4 installed rectangular prism 6, an edge at the right angle of which coincides with the central axis of the flat mirror facets 4, one of the two sides adjacent to this edge, is combined with a plane mirror facets 4 on the second face of the rectangular prism applied reflective coating.
The mirror coating flat facet 4 holds the window 7, coinciding in shape with the projection reflecting face 9 of a rectangular prism 6 on the plane facets 4 in the beam path AA parallel to the optical axis OO forming a parabola parabolotsilindricheskogo concentrator 3 incident on the back side of each facet 4 (sm. 2).
Solar thermal system works as follows
The guidance system (not shown) produces orientation parabolotsilindricheskogo hub 3 on the sun elevation. Proper orientation parabolotsilindricheskogo concentrator 3 in the Sun is not sufficient for getting sunlight from every facet 4 per linear receiver 5.
Uniform illumination of the receiving surface of the linear receiver 5, in which the solar radiation reflected from all facets 4, enters the receiving surface of the linear receiver 5, is provided under the following conditions:
- All flat mirror facets 4 are arranged on tangents to a parabola generator and touch the parabola of its central axis,
- The middle line of the linear receiver 5, receiving surface is at the focal line of the concentrator 3 parabolotsilindricheskogo.
The proposed solar thermal system instead of the mutual alignment of the mirror facets 4 with a receiving surface of the linear receiver 5 is made mutual adjustment reflecting faces 9 rectangular prisms 6, installed on the back side bevel 4, with the same receiving surface of the linear receiver 5. This adjustment can be carried out immediately before starting work or even in the process of solar.
Detail of forming a parabola with three flat mirror facets 4 and mounted with a rectangular prism 6 is depicted in Figure 2. Rectangular prism 6 is mounted on the facet 4 so that the edge at the right angle coincides with the central axis of the flat mirror facets 4, one of the two edges 8 adjacent to this edge, is combined with a plane mirror facets 4 on the second face 9 deposited reflective coating.
From auxiliary light source such as a semiconductor laser (not shown), the reflecting prism face 9 6 enters AA narrow beam parallel to the axis of the parabola generator GS.
Since the tangent and the normal to the parabola bisects the angles between the focal radius vector and a diameter passing through the point of contact, t. E. The corners and 
1 = 2, and 
1 = 2, it can be argued that the rays AA parallel to the axis of the parabola PA, falling on the back side of the facet 4, reflected on a mirror coating applied to the brink of 9 installed normal to the mirror facet plane 4, will pass through the parabola focus, if the mirror facets 4 installed tangent to the parabola.
In order to control AA rays coming from the back of the facets 4, could get a receiving surface of the linear receiver 5, a mirror coating flat facet 4 is made box 7 on the form of projections reflecting face 9 on the plane facets 4 in the control rays AA.
If all the control AA beams reflected from the faces 9 perpendicular to the planes of the respective facets 4, hit the control mark 
, Located on the midline of the linear receiver 5, then we can assume that all the mirror facets 4, located along the tangents to a parabola, and the middle line of the receiving surface of the linear receiver 5 passes through the focal line of the concentrator 3 parabolotsilindricheskogo.
In this case, after the completion of the orientation of the cylindrical hub 3 on Sun BB solar beams reflected from the mirror of all facets 4, get on the receiving surface of the linear receiver 5.
If the spread of the control provisions of the AA-rays reflected from different prisms, the control mark exceeds the allowable value, sequentially changing the inclination of each mirror facet 4, seek control ingress AA beams reflected from each prism 6, the control mark .
In contrast to the known solar, in which alignment is performed using the most reflective surface mirror facets 4 in the apparatus introduced elements of operational control and adjustment, control light beams reflected from the face of the prism 6, mounted on the rear side of the facet 4.
Such a scheme of control and adjustment does not require removal of the solar operating state, which increases the effectiveness and efficiency of the adjustment work.
Currently, based on the application prototype of the solar thermal system and its full-scale tests conducted at the site in the village Gribanovo Moscow region.
INFORMATION SOURCES
1. AS 1545040 Russia, IPC F 24 J 2/12.
2. Pat. US 5655515, IPC F 24 J 2/38.
3. Request 19546913 Germany, IPC F 24 J 2/14, F 24 J 2/12.
4. AS 1449785 Russia, IPC F 24 J 2/38 - prototype.
CLAIM
Solar power plant, comprising a support structure attached to it dvuhplechy lever and a cylindrical hub of a set of plane mirror facets, a linear receiver concentrated radiation, mounted on the lever on the focal line of the cylindrical hub, characterized in that the back side of each flat mirror facets mounted rectangular prism, the edge at the right angle of which coincides with the central axis of the flat mirror facets, one of the two faces of the prism adjacent to this edge aligned with the plane of the mirror facets on the second face of the rectangular prism deposited reflective coating and a mirror coating flat facets performed box shaped projection reflects at the verge of a rectangular prism facet plane in the beam path parallel to the optical axis of the cylindrical hub incident on the back side of each facet.
print version
Publication date 18.03.2007gg
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