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TECHNICAL PAPERS

Beam Characterization and Improvement with a Flux Mapping System for Dish Concentrators

[+] Author and Article Information
Steffen Ulmer, Wolfgang Reinalter, Peter Heller, Eckhard Lüpfert

Deutsches Zentrum für Luft- und Raumfahrt (DLR), Plataforma Solar de Almerı́a, Apartado 39, E-04200 Tabernas, Almerı́a, Spain

Diego Martı́nez

Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Plataforma Solar de Almerı́a, Apartado 22, E-04200 Tabernas, Almerı́a, Spain

J. Sol. Energy Eng 124(2), 182-188 (Apr 24, 2002) (7 pages) doi:10.1115/1.1464881 History: Received February 01, 2001; Revised February 01, 2002; Online April 24, 2002
Copyright © 2002 by ASME
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References

Heller, P., Reinalter, W., and Martinez, D., 2001, “Status of Development of the Dish/Stirling Systems at Plataforma Solar de Almerı́a,” Proc. of 10th Int. Stirling Engine Conf. Osnabrück, Germany.
Heller, P., Baumüller, A., and Schiel, W., 2000, “Eurodish–The Next Milestone to Decrease the Costs of Dish/Stirling Systems Towards Competitiveness,” Solar Thermal 2000 Int. Conf., Sydney, Australia.
Lüpfert, E., Heller, P., Ulmer, S., Monterreal, R., and Fernandez, J., 2000, “Concentrated Solar Radiation Measurement with Video Image Processing and Online Fluxgage Calibration,” Solar Thermal 2000 Int. Conf., Sydney, Australia.
Kaluza, J., Neumann, A., Ferriere, A., and Robert, J. F., 2000, “Concentrated Solar Flux Measurements: Results of the Second SolarPACES Fluxmeter Intercomparison Campaign,” 10th SolarPACES Int. Symp. on Solar Thermal Concentrating Technologies, Sydney, Australia.
Romero, V. J., 1994, “CIRCE2/DEKGEN2: A Software Package for Facilitated Optical Analysis of 3-D Distributed Solar Energy Concentrators,” User Manual, Sandia Report SAND91-2238, Albuquerque, NM.
Kaluza, J., and Neumann, A., 1998, “Measurement of Solar Radiation with CCD-Cameras: Influence of the Spectral Characteristic,” ASME/Solar ’98, Albuquerque.

Figures

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The target package on ground
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Image rectification and size standardization of used target area
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Spectral influence on calibration factor
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Flux maps from focal plane to absorber plane in logarithmic scale
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Flux distribution in focal plane of DISTAL II North
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Flux distribution in absorber plane of DISTAL II North
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Improved flux distribution in absorber plane of DISTAL II North
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Possible improvement of receiver intercept factor with tracking offset
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Flux distribution in focal plane of EURODISH South
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Flux distribution in absorber plane of EURODISH South
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Improved flux distribution after applying tension ring on concentrator center
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Percentage of integrated energy radii and cavity outline in EURODISH South
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The target package in operation in the EURODISH
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Transmission curves of B&W ND-filters

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