Solar energy concentrator
First Claim
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1. A solar energy apparatus, comprising:
- (a) absorber means for absorbing solar flux;
(b) flexible reflective means for receiving incident solar flux and concentrating same on said absorber means;
(c) means for mounting said sheet of reflective material on a surface to receive solar flux;
(d) means for moving the position of said absorber means with respect to said flexible reflective means according to the flux distribution of the solar flux received by said absorber means; and
(e) means for adjusting the shape of said flexible reflective means according to the position of said absorber means, said means for adjusting comprising;
(1) a plurality of adjacent compartments formed beneath a plurality of adjacent sections of said flexible reflective means;
(2) means for controlling the pressure in said compartments to control the curvature of said sections of said flexible reflective means;
(3) means for adjusting the cross length of said flexible reflective means relative to the width between said mounting means; and
(4) computer means for coordinating said means for adjusting the cross length and said means for controlling the pressure to control the shape of said flexible reflective means, and(f) means for pressure isolation between said compartments.
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Abstract
A solar energy concentrator is provided which includes a flexible reflective surface to focus solar flux on absorber tubes. The surface is mounted above a plurality of partially evacuated chambers. As the relative position between the sun and the concentrator change, the position of the absorber tubes and curvature of the reflective surface are changed to maintain an optimum reflective surface curvature for solar energy concentration.
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Citations
19 Claims
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1. A solar energy apparatus, comprising:
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(a) absorber means for absorbing solar flux; (b) flexible reflective means for receiving incident solar flux and concentrating same on said absorber means; (c) means for mounting said sheet of reflective material on a surface to receive solar flux; (d) means for moving the position of said absorber means with respect to said flexible reflective means according to the flux distribution of the solar flux received by said absorber means; and (e) means for adjusting the shape of said flexible reflective means according to the position of said absorber means, said means for adjusting comprising; (1) a plurality of adjacent compartments formed beneath a plurality of adjacent sections of said flexible reflective means; (2) means for controlling the pressure in said compartments to control the curvature of said sections of said flexible reflective means; (3) means for adjusting the cross length of said flexible reflective means relative to the width between said mounting means; and (4) computer means for coordinating said means for adjusting the cross length and said means for controlling the pressure to control the shape of said flexible reflective means, and (f) means for pressure isolation between said compartments. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17)
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6. means for pressure isolation between said compartments.
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12. A method of concentrating solar energy on a solar flux absorber with a flexible reflective surface, comprising the steps of:
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(a) moving the position of the absorber with respect to the flexible reflective surface according to the flux distribution on the absorber; and (b) adjusting the shape of the flexible reflective surface according to the position of the absorber by performing the steps of; (1) controlling the pressure in adjacent compartments formed beneath the flexible reflective surface to control the curvature of the surface; (2) adjusting the cross length of the flexible reflective surface relative to the width of structure between which the reflective surface is mounted; and (3) coordinating said steps of adjusting of the cross length and controlling the pressure to control the shape of the flexible reflective surface.
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18. The method of concentrating solar energy on a solar flux absorber with a flexible reflective surface, comprising the steps of:
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(a) adjusting the flexible reflective surface to approximate a parabolic section which corresponds to the incident solar flux angle and which further has a focal point which conincides with the locus of possible solar flux absorber positions said adjusting comprising the steps of; (1) controlling the pressure in adjacent compartments formed beneath the flexible reflective surface to control the curvature of the surface; (2) adjusting the cross length of the flexible reflective surface relative to the width of structure between which the reflective surface is mounted; (3) coordinating said steps of adjusting of the cross length and controlling the pressure to control the shape of the flexible reflective surface; and (b) moving the position of the absorber with respect to the flexible reflective surface in order to position the absorber at the focal point of the parabolic section.
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19. An apparatus for concentrating solar energy on a solar flux absorber with a flexible reflective surface, comprising:
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(a) means for adjusting the flexible reflective surface to approximate a parabolic section which corresponds to the incident solar flux angle and which further has a focal point which coincides with the locus of possible solar flux absorber positions said means for adjusting comprising; (1) a plurality of adjacent compartments formed beneath a plurality of adjacent sections of the flexible reflective surface; (2) means for controlling the pressure in said compartments to control the curvature of said sections of the flexible reflective surface; (3) means for adjusting the cross length of the flexible reflective surface relative to the width between said mounting means; and (4) computer means for coordinating said means for adjusting the cross length and said means for controlling the pressure to control the shape of the flexible reflective surface; and (b) means for moving the position of the absorber with respect to the flexible reflective surface in order to position the absorber at the focal point of the parabolic section.
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Specification