... around the circumference of the absorber tube wall. This study proposed an efficient step-by-step procedure incorporating the Monte Carlo ray-tracing (MCRT) and finite volume approach for the design procedure. Gong et al. [ 27 ] enhanced the flux distribution by using a secondary reflector (SR) as a flux...

...Muhammad Uzair; Naveed ur Rehman This paper presents a method for evaluating the intercept factor (γ) of a beam-down parabolic trough collector (BDPTC), accounting for collector design, solar cone, and shading on the aperture due to secondary reflectors. A numerical ray-tracing technique...

..., hybrid ray-tracing (HRT), surface property simulation, and sky model. The HRT can achieve high accuracy using significantly fewer computation resources compared with Monte Carlo ray-tracing (MCRT) and was validated against tracepro . The new optical model incorporates angular and spectrum dependence...

... position, without or with little restrictions. A nonsimplifying ray-tracing tool is used for the performance evaluation. During the optimization, detailed local weather and site characteristics (e.g., topography) can be considered. An example case is presented and discussed. This case is based on a field...

...Ramon Pujol Nadal; Víctor Martínez Moll The fixed mirror solar concentrator (FMSC) is a mobile focus concentrator whose design emerged in the 1970s in an effort to reduce electricity production costs in solar thermal power plants. This geometry has not yet been analyzed with 3D ray-tracing...

... and shown to be equivalent to the well-known Rayleigh distribution obtained by transforming the bivariate circular Gaussian distribution into polar coordinates. The corresponding inverse cumulative distribution function applied in Monte Carlo ray-tracing simulations, which gives the dispersion angle...

... of solar concentration ratio over the entire uniform illumination area of the simulated solar flux distribution. Since ray-tracing is a statistical method of tracing the sunrays from the reflector to the receiver, it is unavoidable that the simulated results obtained in our study are also statistical data...

... light with a divergence of less than 4 mrad. 22 08 2008 28 05 2009 09 11 2009 arrays mirrors poles and towers solar energy concentrators solar power stations thermal stresses concentrating solar power heliostat mirror array ray-tracing In the early years...

... expansion and gravitational forces on selected components. The measured surface data can be used to calculate slope errors and undertake ray-trace studies to compute intercept factors and assess concentrator qualities. The demonstrated shape changes of the jig are higher than tolerated by the collector...