Solar Concentration of 50,000 Achieved With Output Power Approaching 1 kW

[+] Author and Article Information
D. Jenkins, R. Winston, J. Bliss, J. O’Gallagher

Department of Physics and the Enrico Fermi Institute, The University of Chicago, Chicago, IL 60637

A. Lewandowski, C. Bingham

National Renewal Energy Laboratory, 1617 Cole Boulevard, Golden, CO 80401

J. Sol. Energy Eng 118(3), 141-145 (Aug 01, 1996) (5 pages) doi:10.1115/1.2870882 History: Received October 01, 1995; Revised February 01, 1996; Online February 14, 2008


We have achieved a 50,000 ± 3,000 times concentration of sunlight using a unique dielectric nonimaging concentrator in an experiment performed at the National Renewable Energy Laboratory. The scale of the experiment is several times larger than that of previous experiments. Total output power approaching 1 kW passes through a 4.6 mm diameter aperture. An extractor tip is added to the concentrator profile which allows measurement of flux levels using an air calorimeter. This new device has the potential to allow the use of dielectric concentrators at larger scale for thermal electric power generation. We report on the implications of this experiment for the future use of dielectric concentrators.

Copyright © 1996 by The American Society of Mechanical Engineers
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