A novel high-flux solar simulator, capable of delivering over 50kW of radiative power at peak radiative fluxes exceeding 11,000 suns, is operational at the Paul Scherner Institute. It comprises an array of ten Xe arcs, each close-coupled with ellipsoidal specular reflectors of common focus. Its optical design, main engineering features, and operating performance are described. The Monte Carlo ray-tracing technique is applied to optimize the geometrical configuration for maximum source-to-target transfer efficiency of radiative power. Calorimeter measurements indicated an average flux of 6800kW∕m2 over a 60-mm-diameter circular target, which corresponds to stagnation temperatures above 3300K⁠. This research facility simulates the radiation characteristics of highly concentrating solar systems and serves as an experimental platform for investigating the thermochemical processing of solar fuels and for testing advanced high-temperature materials.

Issue Section:
Research Papers
Keywords:
arc lamps, ray tracing, xenon
Topics:
Design, Optical design techniques, Optical mirrors, Radiation (Physics), Ray tracing, Solar energy, Mirrors, Manufacturing, High temperature, Temperature
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Copyright © 2007
 by American Society of Mechanical Engineers
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