Advanced micro-optics solar energy collection system

• US 6,988,809 B2
• Filed: 01/16/2004
• Issued: 01/24/2006
• Est. Priority Date: 01/16/2004
• Status: Expired due to Fees

• Current Assignee: Mario Rabinowitz
• Original Assignee: Mario Rabinowitz
• Inventors: Rabinowitz, Mario
• Primary Examiner(s): Dang, Hung Xuan
• Assistant Examiner(s): TRA, TUYEN Q
• Application Number:
  US10/760,068
• Publication Number:
  US 20050157411A1
• Time in Patent Office: 739 Days
• Field of Search: 359/851, 359/853, 359/873, 359/872, 359/296, 359/220, 359/221, 359/223, 359/224, 359/225, 359/226, 359/290, 126/600, 126/684, 345/107
• US Class Current: 359/851
• CPC Class Codes: F24S 2023/85 Micro-reflectors
• CPC Class Codes: F24S 2023/87 Reflectors layout
• CPC Class Codes: F24S 2023/872 Assemblies of spaced reflective elements on common support, e.g. Fresnel reflectors
• CPC Class Codes: F24S 23/70 with reflectors
• CPC Class Codes: F24S 23/77 with flat reflective plates
• CPC Class Codes: G02B 26/026 based on the rotation of particles under the influence of an external field, e.g. gyricons, twisting ball displays based on orientable dipolar particles G02F1/172; based on electrophoresis G02F1/167
• CPC Class Codes: G02B 26/0833 the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD G02B26/0825 takes precedence; micromechanical devices in general B81B
• CPC Class Codes: Y02E 10/40 Solar thermal energy, e.g. solar towers

Abstract

Due to an ever growing shortage of conventional energy sources, there is an increasingly intense interest in harnessing solar energy. Broadly this invention deals with the general concept of method, apparatus, and consequences of focussing light. Specifically the Coherent-Micro-Macro-Collector of this invention is the unique total solar collector system consisting of concentrator and receiver. Method and apparatus are detailed for systems with: 1. Passive or non-tracking. 2. Semi-Passive tracking 2. Single-axis tracking. 3. Two-axis tracking. Also detailed are means for operating the collector system of micro-optics and receiver on the ground and protection means. A particularly important object of the CMMC is the focussing of sunlight for solar power conversion and production.

Claims

1. A reflecting micro-optics solar concentrator system which reflects the sun onto a solar energy receiver, comprising:

a) a solar concentrator with anisotropic rotatable specular reflection miniature mirrors embedded in balls disposed in a surrounding medium of an optically transmissive lubricating fluid disposed behind an optically transmissive surface;

b) electric coupling means for aligning the anisotropic rotatable miniature specular reflection mirrors;

c) electrical means for tracking the sun with said mirrors;

d) means for focusing said reflecting system unto said solar energy receiver; and

e) means for supporting said solar energy receiver above said concentrator in a pyramidal configuration.

2. The apparatus of claim 1, wherein said reflecting solar micro-optics concentrator is adjacent to and supported by the ground.

3. The apparatus of claim 1, wherein the said reflecting micro-optics solar concentrator is in modular form.

4. The apparatus of claim 1, wherein the aligning means is at least one external electric field wand.

5. The apparatus of claim 1, wherein the aligning means is at least one external magnetic field wand.

6. The apparatus of claim 1, wherein said optically transmissive surface is covered by a plurality of removable plastic films.

7. The apparatus of claim 1, wherein a plurality of micro-optics solar concentrators are disposed in different angular orientations.

8. The apparatus of claim 1, wherein a plurality of micro-optics solar concentrators and solar energy receivers are each disposed in different angular orientations comprising at least one pair of concentrators and receivers in substantially parallel alignment.

9. The apparatus of claim 1, wherein a plurality of sensors are dispersed on the surface of said solar energy receiver to sense solar beam mis-stearing.

10. The apparatus of claim 1, wherein a plurality of sensors dispersed on the surface of said solar energy receiver to sense solar beam mis-stearing are connected to a circuit for fail-safe defocusing of the solar beam.

11. The apparatus of claim 1, wherein at least one pair of solar concentrators and solar receivers are placed under a transparent cover.

12. A method of concentrating and receiving energy from the sun provided by a solar energy receiver and solar concentrator with miniature mirror reflectors embedded in balls comprising the steps of:

a) aligning said miniature mirror reflectors;

b) tracking the sun with said mirrors;

c) focusing the miniature mirrors unto said solar energy receiver; and

d) supporting said solar energy receiver above said solar concentrator in a pyramidal configuration.

13. The method of claim 12 further comprising the step of placing the solar micro-optics concentrator on the ground.

14. The method of claim 12 further comprising the step of constructing the solar micro-optics concentrator in modular form.

15. The method of claim 12 further comprising the step of aligning said miniature mirror reflectors by means of an external electric field wand.

16. The method of claim 12 further comprising the step of aligning said miniature mirror reflectors by means of an external magnetic field wand.

17. The method of claim 12 further comprising the step of fiducializing the orientation of the miniature mirror reflectors in situ.

18. The method according to claim 12, wherein the fiducial orientation of the mirrored balls is carried out in situ by means of a fiducializing sensor.

19. A method for improving the alignment operability of rotatable miniature reflectors of a micro-optics solar concentrator system for concentrating reflected sunlight disposed in a surrounding medium of an optically transmissive lubricating fluid retained between upper and lower sheets, the lubricating fluid disposed behind an optically transmissive surface, the method comprising the steps of:

a) heating the solar concentrator of the micro-optics solar concentrator system for no more than four hours; and

b) agitating the rotatable miniature reflectors relative to the surrounding media during heating.

20. The method of claim 19 wherein the agitation is provided by vibration of the said micro-optics system.

21. The method of claim 19 wherein the agitation is provided by rotation of the said rotatable miniature reflectors.

22. The method of claim 19, wherein the solar concentrator is heated in the range of 35 to 90 degrees Centigrade.

23. The method according to claim 19, wherein the rotatable miniature reflectors are balls.

24. The method according to claim 19, wherein the rotatable miniature reflectors are generally cylindrical.

25. The method according to claim 19, wherein the rotatable miniature reflectors are electromagnetically anisotropic and wherein the agitating step includes alternating an electromagnetic field and thereby rotating the anisotropic reflectors relative to the surrounding media.

26. The method according to claim 19, wherein an alternating electric field is driven at one to three times the alignment field for the concentrator.

27. The method according to claim 19, wherein an alternating magnetic field is driven at one to three times the alignment field for the concentrator.

28. The method according to claim 19, wherein a manufacturing step includes drawing a vacuum between the sheets so as to degas the medium therein.