Flux Mapping the 400 m2 “Big Dish” at the Australian National University

[+] Author and Article Information
G. Johnston

Energy Research Centre/Department of Engineering, Australian National University, Canberra, ACT, Australia 0200

J. Sol. Energy Eng 117(4), 290-293 (Nov 01, 1995) (4 pages) doi:10.1115/1.2847841 History: Received February 01, 1995; Revised August 01, 1995; Online February 14, 2008


Videographic flux mapping has been used to characterise the focal flux distribution of the 400 m2 solar concentrator located at the Australian National University. Peak fluxes in the focal region of 1.13 MW m−2 have been recorded, which corresponds to a concentration of 1790 suns normalized to 1000 W m−2 insolation and 100 percent mirror reflectivity. Comparisons with ray trace predicted fluxes incorporating surface normal errors indicates that the dish surface has a mean surface error standard deviation of 6 milliradian.

Copyright © 1995 by The American Society of Mechanical Engineers
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