Reflective optics for redirecting convergent radiative beams in concentrating solar applications

摘要: Abstract We investigate optical characteristics of flat, ellipsoidal, hyperboloidal, and paraboloidal reflectors for redirecting convergent radiative beams common in concentrating solar applications. Optical simulations are performed with selected types sources including a generic uniformly-emitting spherical cap specific realization multi-source high-flux simulator. Two-dimensional ray-tracing conducted an ideal system without imperfections consisting source, beam-redirecting reflector, target tailored to capture all radiation. System performance is evaluated terms output beam rim angle, ray distribution relative position the input beam. Three-dimensional Monte-Carlo practical realistic simulator as radiation source four reflectors. predict resulting power, spatial directional flux distribution, efficiencies on specified flat hemispherical targets, clearance between simulator, reflector target. From model exemplary parameters, it concluded that investigated enable redirection horizontal-axis from non-horizontal axis targets. The enables highest efficiency 97% at expense smallest reflected image. Curved render larger degree freedom design Thus, curved suitable applications require large components and/or high cavity surface, but lower efficiency.