0
TECHNICAL PAPERS

Determining the Optical Properties of PETAL, the 400 m2 Parabolic Dish at Sede Boqer

[+] Author and Article Information
S. Biryukov

Department of Solar Energy & Environmental Physics, Jacob Blaustein Institute for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, 84990 Israel

J. Sol. Energy Eng 126(3), 827-832 (Jul 19, 2004) (6 pages) doi:10.1115/1.1756925 History: Received September 01, 2003; Revised March 01, 2004; Online July 19, 2004
Copyright © 2004 by ASME
Your Session has timed out. Please sign back in to continue.

References

Blackmon,  J., 1985, “Development and Performance of a Digital Image Radiometer for Heliostat Evaluation at Solar One,” ASME J. Sol. Energy Eng., 107, pp. 315–321.
Mancini,  T., 1991, “Analysis and Design of Two Stretched-Membrane Parabolic Dish Concentrators,” ASME J. Sol. Energy Eng., 113, pp. 180–187.
Johnston,  G., 1995, “Flux Mapping the 400 m2 “Big Dish” at the Australian National University,” ASME J. Sol. Energy Eng., 117, pp. 290–293.
Ballestrin,  J., 2002, “A Non-Water-Cooled Heat Flux Measurement System Under Concentrated Solar Radiation Conditions,” Sol. Energy, 73(3), pp. 159–168.
Ulmer,  S., Reinalter,  W., Heller,  P., Lupfert,  E., and Martinez,  D., 2002, “Beam Characterization and Improvement with a Flux Mapping System for Dish Concentrators,” ASME J. Sol. Energy Eng., 124, pp. 182–188.
Wendelin, T., Jorgensen, G., and Wood, R., 1991, “SHOT: A Method for Characterizing the Surface Figure and Optical Performance of Point Focus Solar Concentrators,” ASME-JSES-JSME International Solar Energy Conference, Reno, NV, pp. 555–560.
Grossman, J., 1994, “Development of a 2f Optical Performance Measurement System,” Proceedings of the ASME International Solar Engineering Conference, pp. 25–32.
Shortis,  M., and Johnston,  G., 1996, “Photogrammetry: An Available Surface Characterization Tool for Solar Concentrators, Part I: Measurements of Surfaces,” ASME J. Sol. Energy Eng., 118, pp. 146–150.
Wendelin, T., and Grossman, J., 1995, “Comparison of Three Methods for Optical Characterization of Point Focus Concentrators,” ASME-JSES-JSME International Solar Energy Conference, Maui, Hl, pp. 775–780.
Johnston, G., 1997, “Focal Region Modeling and Characterization of Paraboloidal Dish Solar Concentrators,” PhD Thesis, Australian National University, Canberra.
Walraven,  R., 1978, “Calculating the Position of the Sun,” Sol. Energy, 20(5), pp. 393–397.
Kaneff, S., 1991, “The White Cliffs Project, Overview for the period 1979–1989,” Office of Energy, Sydney 1991, ISBN 0 7305 6954 3 91/113.
Rabl, A., 1985, Active Solar Collectors and Their Applications (Oxford University Press, New York).

Figures

Grahic Jump Location
PETAL: The 400 m2 paraboloidal solar concentrator at Sede Boqer, with 1 m2 test screen mounted at its focus.
Grahic Jump Location
Variable-focus white screen mounted on support mast
Grahic Jump Location
Response of the CCD camera under variable illumination, plotted against the short circuit current of a calibrated solar cell
Grahic Jump Location
Image of the full moon on PETAL’s white screen and the corresponding 2D intensity distribution
Grahic Jump Location
Negative Image of the white screen with support structure at night
Grahic Jump Location
Fraction of cumulative power, included within any given radius R on the screen. Curve A, a single panel from the central zone of the dish (sun). Curve B, ensemble of 215 panels (full moon).
Grahic Jump Location
White screen with image of Jupiter, produced by PETAL, as viewed from the ground
Grahic Jump Location
PETAL’s caustic surface visualized by sunlight reflected off small particles in the air (focal zone additionally contrasted)
Grahic Jump Location
Focal region of PETAL’s caustic surface
Grahic Jump Location
The processed image of PETAL’s light caustic reflected off small particles in the air. Focal XY-plane and optical axis Z are schematically shown. I(Y) and I(Z) plots demonstrate distributions of scattered light intensity in Y and Z directions, respectively. The left plot named “ruler” demonstrates brightness distribution along the ruler, which provides the scale in Z-direction.
Grahic Jump Location
Left, one hextant containing 36 individual mirror panels. (Straight lines connect the centers of several panels to the “centers of mass” of their respective intensity distributions on the screen); Right, the focal zone (enlarged).
Grahic Jump Location
Comparison of cumulative power distributions of two large solar dishes: BGU’s PETAL and ANU’s Big Dish

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In