Solar electricity generator

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Filing Information

  • Patent Number: US7299632
  • Application Number: US10491185
  • Filing date: 10/09/2002
  • PCT 371 date: 09/08/2004
  • Issue date: 11/27/2007
  • Prior Publication Data:
  • Predicted expiration date: 11/02/2022
  • Patent term adjustment: 24
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  • U.S. Classifications: 606/418  · 606/15  ·
  • International Classifications: B60K1600 ·
  • PCT Application Number: WO20PCTEP0211309 - 10/09/2002
  • PCT Publication Number: WO2003034506 - 04/24/2003
  • Foreign Priority: DE10150176 - 10/12/2001 · DE10214408 - 03/30/2002 ·
31 Claims, 8 Drawings


Abstract

Disclosed is a floating altazimuth-tracking array of point-focus lenses that concentrate direct sunlight on the upper ends of optical-homogenizer rods bonded to high-efficiency multi-junction photovoltaic cells. The cells are on heat sinks in altitude-tracking linear troughs holding multiple lens-rod-cell assemblies. Swiveling on horizontal axes, the troughs have their heat sinks always submerged in the water of a circular pond. Only knee-high al-together, the troughs and their floating frame rotate in the shallow pond for azimuth tracking. Closely packed floating platforms comprise solar electric farms with maximal land utilization.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US4159629* A. L. Korr Associates, Inc. Korr et al. Jul 1979
US4214572* GONDER WARREN W Gonder Jul 1980
US4296731* CLUFF C BRENT Cluff Oct 1981
US4315500* GONDER WARREN W Gonder Feb 1982
US4350143* LAING NIKOLAUS Laing et al. Sep 1982
US4360004* TESTOLINI GIOVANNI Testolini Nov 1982
US4771764* CLUFF C BRENT Cluff Sep 1988
US5286305* LAING JOHANNES N Laing et al. Feb 1994
US5445177* Laing et al. Aug 1995
US5665174* Laing et al. Sep 1997
US5772791* Laing Jun 1998
US6020553* Yeda Research and Development Co., Ltd. Yogev Feb 2000
US20040163697* Papadopoulos Aug 2004
US20040187907* Morgal Sep 2004

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
AU723841*LAING JOHANNES L NMay 1998
* cited by examiner

Other Publications

Das solar marine-Kraftwerk, Laing, Eurosolar (magazine), Feb. 1992, pp. 18-19.*
* cited by examiner

Referenced By

The current document is not referenced by other documents.

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Independent Claims | See all claims (31)

  1. 1. A two axis tracking solar electrical generator comprising a concentrator for sun rays; and a homogenizer, wherein the concentrator forms a pencil in which the rays are concentrated onto a small area on an entrance surface of the homogenizer which on its opposite surface is attached to a photovoltaic cell whereby said entrance surface of the homogenizer is so large that the concentrated rays still reach the photovoltaic cell even when the tracking has an error of 1 degree.
  2. 5. A two axis tracking solar electrical generator comprising a concentrator for sun rays; and a homogenizer, wherein the concentrator forms a pencil in which the rays are concentrated onto a small area on an entrance surface of the homogenizer which on its opposite surface is attached to a photovoltaic cell whereby said entrance surface of the homogenizer is so large that the concentrated rays still reach the photovoltaic cell even when the tracking has an error of 1 degree, wherein the generator further comprises a photovoltaic cell and heat dissipating means, whereby between the photovoltaic cell and the heat dissipating means a metal layer of a material is positioned which has a thermal expansion coefficient close to that of the photovoltaic cell.