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  • Other Sources  (2)
  • ENERGY PRODUCTION AND CONVERSION  (2)
  • Acid phosphatase
  • Eranthemum pulchellum
  • Ovule
  • 1
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    An analytical and experimental investigation of a 1.8 by 3.7 meter Fresnel lens solar concentrator (1977)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Line-focusing acrylic Fresnel lenses with application potential in the 200 to 370 C range are being analytically and experimentally evaluated. Investigations previously conducted with a 56 cm wide lens have been extended by the present study to experimentation/analyses with a 1.8 by 3.7 m lens. A measured peak concentration ratio of 64 with 90 percent of the transmitted energy focused into a 5.0 cm width was achieved. A peak concentration of 61 and a 90 percent target width of 4.5 cm were analytically computed. The experimental and analytical lens transmittance was 81 percent and 86 percent, respectively. The lens also was interfaced with a receiver assembly and operated in the collection mode. The collection efficiency ranged from 42 percent at 100 C to 26 percent at 300 C.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-TP-1005 , M-224
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    An analytical and experimental investigation of a 1.8 by 3.7 meter Fresnel lens solar concentrator (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Line-focusing acrylic Fresnel lenses with application potential in the 200-370 C range are being analytically and experimentally investigated. The measured solar concentration characteristics of a 1.8 by 3.7 m lens and its utilization in a solar collection mode are summarized in this paper. A peak concentration ratio of 64 with 90% of the transmitted energy focused into a 5 cm width was achieved and demonstrated the feasibility of the Fresnel lens solar concentrator concept.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: International Solar Energy Society; Jun 06, 1977 - Jun 10, 1977; Orlando, FL
    Format: text
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    NASA TECHNICAL REPORTS
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