AU5834299A - Inflatable solar mirror - Google Patents
Inflatable solar mirror Download PDFInfo
- Publication number
- AU5834299A AU5834299A AU58342/99A AU5834299A AU5834299A AU 5834299 A AU5834299 A AU 5834299A AU 58342/99 A AU58342/99 A AU 58342/99A AU 5834299 A AU5834299 A AU 5834299A AU 5834299 A AU5834299 A AU 5834299A
- Authority
- AU
- Australia
- Prior art keywords
- mirror
- axis
- rings
- sun
- lenght
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S30/00—Arrangements for moving or orienting solar heat collector modules
- F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/50—Rollable or foldable solar heat collector modules
- F24S20/55—Rollable or foldable solar heat collector modules made of flexible materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/71—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with parabolic reflective surfaces
- F24S23/715—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with parabolic reflective surfaces flexible
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/79—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with spaced and opposed interacting reflective surfaces
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
Description
1 INFLATABLE SOLAR MIRROR The present invention relates to a inflatable mirror having a curved reflecting surface and a method of producing such a mirror.
In the past, curved, typically dished mirrors, have been formed of coated metal or glass or solid plastic or polished metal and the accurate curvature of such material is a complex and hence expensive operation.
There are also practical limits particularly with regard to cost, and the problems of transporting large rigid objects to the size of which such mirrors can be constructed.
The present invention seeks to provide a mirror which over comes these disadvantages which is easy and cheap to produce and thus has much wider commercial application than the known types of dished and rigid mirrors.
According to the present invention there is provided a construction of mirror which contrary to well known types is not rigid but a inflatable and for that reason pliable, puch-absorbent one. Such qualiity of the present invention is a prerequisite for the production of extremely light and material-thrifty solar mirrors.
There are known inflatable solar mirrors, which focussing reflecting surfaces are formed by two synthetic films, one of which has a metal coating.
The films are located one opposite the other and are secured along their edges on a carrying elememt. The light passes through the first film in its path, and, being reflected from the metallized surface of the other film, concentrates in the latter's focus. To O provide for the required curvature of the reflecting surface, gas under pressure is supplied into the cavity of inflatable body.
The drawback of such known inflatable mirrors is that the falling sun rays, when passing through the synthetic film, cause its ageing which results in blooming of the film, reduction of the efficiency of said mirrors and of its mechanical strength. In addition, the film placed in the area of high densety of solar energy is irradiated with sun ultraviolet rays.
As a result of this irradiation, holes appear in the film, which violates the hermeticity of the cavity of the inflatable body and reduces its service life.
It is therefore a primary object of the presep, invention to provide an inflatable solar mirror, whos& reflecting surface is exposed directly and hindrancefreq to all spectrum of solar radiation on the other hand in which a complete protection of the rubbery casing of the inflatable supporting body against the sun ultraviolet 2 rays is ensured. According to the present invention there is provided a mirror, which comprising a plurality of the springy rings with a reflective, conical or rotation-parabolic surface which united with an inflatable body causes the rings to take up a shape so that rays impinging on the reflecting surface are reflected in a predetermined manner, whrein the manual demountability and remoutability of the rings is ensured by the winged nuts and the press-studs, which hold together the all plates of the rings and on the other hand does conect the rings with the said inflatable body.
The materials of the rings and its components could be for example the metallicaly coated oxide ceramics or glass. In accordance with the thickness of said rings it would be possible the application of hard materials with a very limited elasticity.
It is another object of the present invention to provide a mirror, wherein the inflatable body possesses a torus affinitiv form and comprises a plurality of lapping tubes of elastic material and a coat of chain which cover the said plurality.
It is another object of the present invention to provide a mirror with an inflatable body in which links of the !chain are the coiled strings whose relative lenght and relative force to which they are exposed is fixed as a result of a computer simulation for an optimal variant in a table N 1. how the genuine lenght 'Lg' and genuine force 'Fg' could be calculate from the formulas: Lg D*rl.lenght; Fg D 2 *(Ptube-Patm)*rl.force; wherein is the diameter of the mirror 'Ptube' is a pressure within the tube and 'Patm' is an atmospheric pressure.
It is another object of the present invention to provide an apparatus for utilising solar energy including a said O mirror being mounted on a carrier so as to be pivotably relative thereto about a first axis substantially perpendicular to a normal axis of the mirror, the carrier being pivotable about a further axis substantially perpendicular to said first axis, so that said normal axis of the mirror can be aligned with the sun, and tracking means for pivotting the mirror about the first axis at a predetermined rate to track the sun through its daily arc; energy conversion means mounted on said carrier in a fixed position relative to the mirror so as to be at a focal point or line of the mirror so that the sun's rays can be focussed on said energy conversion means.
It is another object of the present invention to provide an apparatus wherein said energy conversion means are either a by hot air driven Ljungstromturbine which wheels are equiped with permanent magnets or the said energy conversion means are such as photovoltaic elements.
3 An embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1 is a general view of mirror in accordance with the present invention.
Figure 2 is a optimal variant of the computer design for the chain-coating of the inflatable body.
Figure 3 is a fraction of the tauted coat of the chain with all links, wherein its relative lenght and relative forse, to which the links are exposed, are presented in Tabelle N 1.
Figure 4 is a springy ring with its componets the winged nuts and the press-studs.
Figure 5 is a top view of plurality of the springy rings of the mirror.
Figure 6 is an pulsed airheater at the focussed spot.
*Figure 7 is a side view of presented mirror.
Figure 8 and 9 is a turboengine with an electricity producer.
Referring firstly in Figure 1 there is shown a springy rings 1 which are attached to inflatable S•body 2.
Referring now to Figure 1. a mirror of the type just described is shown mounted on a divergent S"shearslike frame 7 with a cylindrical collapsible air heatting chamber 8 and a hot air driven turbine of Ljungstrom 9. The geometrical axis of the chamber coincides with optical axis of the said mirror.
The precision of the coincidence of both axes is 0 ensured by four ropes 10. The frame 7 is itself pivotally mounted on a car 11 by means of axis 12 and a servomotor 4 which is driven by pressured air from a membrane compressor 5. The car 11 with four adjustable wheels 13 and an anchoring 14 is able to rotate around an axes 15 which is perpendicular to earthsurface and to the swivelling axis 12.
The wheels 13 are equiped with electric motors 6.
The mirror is then arranged to be pivoted by the servomotor 4, compressor 5 and electric motors 6 to thereby track the sun through its daily arc.
Equally an electronic drive, controlled by computer (as in modern telescopes) may be used to serve the same purposes. Thus the maximum amount of sunlight always falls on the mirror.
a o (10.1 pos. link set af a(b b(c c(d d(e elf o(k t(n n(o n(I i(k k-I I-q r1. lenrght o.0p222 0.0?463 0.17097 0.17109 .014i6 0.17545 0.3B1M2 0.97115 0.10571 0.07115 0.10571 0.09478 0.10520 rl.force 0.00829 0.00829 0.0401 0.0M41 0.00829 0.00627 @.058 pos. link set 1q-p q-q f-i h-g h-i h-i, i-h' r-r b-d a-9 W-i rl.Ies*t 0.13225 0.09261 0.84694 0.23229 0.65278 0.06371 0.06317 0.86317 0.07300 0.08130 0.21083 0.06774 0.07754 rl.force 0.00109 0.00153 0.04361 O .W724 0.8071B 0.00724 0.632048 0.06572 0.04380 0.00255 0.00484 8.01147
Claims (6)
1. A mirror comprising a plurality of springy rings with the reflective, conical or rotation-parabolic surface which united with the inflatable body causes the rings to take up a shape so that rays impinging on the reflecting surface are reflected in a predetermined manner, whrein the manual demountability and remoutability of the rings is ensured by the winged nuts and the press-studs.
2. A mirror as claimed in claim 1 wherein the inflatable body possesses a torus-affinitiv form and comprises a plurality of lapping tubes of elastic material and a coat of chain which cover the said plurality.
3. A mirror as claimed in claim 2 wherein the links of the chain are the coiled strings whose relative lenght and relative force to which they are exposed is fixed as a result of a computer simulation for an optimal variant in a table N 1 how the genuine lenght 'Lg' and genuine force 'Fg' could be calculate from the formulas: Lg D*rl.lenght; Fg D 2 *(Ptube-Patm)*rl.force; wherein D is the diameter of the mirror Ptube is a O* pressure within the tube and Patm is an atmospheric pressure.
4. Apparatus for utilising solar energy including a mirror as claimed in any one of the preceding claims, said mirror being mounted on a carrier so as to be pivotably relative thereto about a first axis substantially perpendicular to a normal axis of the mirror, the carrier being pivotable about a further axis substantially perpendicular to said first axis, so that said normal axis of the mirror can be aigened with the sun, and tracking means for pivotting the mirror about the first axis at a predetermined rate to track the sun through its daily arc; energy conversion means mounted on said carrier in a fixed position relative to the mirror so as to be at a focal point or line of the mirror so that the sun's rays can be focussed on said energy conversion means.
Apparatus as claimed in claim 4 wherein said energy conversion means are either a by hot air driven Ljungstromturbine which wheels are equiped with permanent magnets or are such as photovoltaic elemennts.
6. Apparatus including a mirror for harnessing solar energy substantially as described herein with reference to and as illustrated in the accompanying drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE98258635 | 1998-11-26 | ||
| GB9825863A GB2344189A (en) | 1998-11-26 | 1998-11-26 | Inflatable solar mirror |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU5834299A true AU5834299A (en) | 2000-06-01 |
Family
ID=10843045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU58342/99A Abandoned AU5834299A (en) | 1998-11-26 | 1999-11-03 | Inflatable solar mirror |
Country Status (2)
| Country | Link |
|---|---|
| AU (1) | AU5834299A (en) |
| GB (1) | GB2344189A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6943750B2 (en) | 2001-01-30 | 2005-09-13 | Andrew Corporation | Self-pointing antenna scanning |
| CN104133287B (en) * | 2014-07-30 | 2016-04-06 | 清华大学 | A kind of large-scale disc type solar energy condenser minute surface and manufacture method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19649988A1 (en) * | 1996-11-19 | 1998-05-20 | Nikolai Dipl Ing Ustinow | Mirror for concentrating sun's rays on small focus |
-
1998
- 1998-11-26 GB GB9825863A patent/GB2344189A/en not_active Withdrawn
-
1999
- 1999-11-03 AU AU58342/99A patent/AU5834299A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| GB2344189A (en) | 2000-05-31 |
| GB9825863D0 (en) | 1999-01-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period |