... 2022 01 05 2022 20 06 2022 parabolic trough collector secondary reflector non-uniform heat flux solar energy ray-tracing clean energy heat transfer simulation solar receiver thermal power Fossil fuels contribute severe widespread effects to our climate...

...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...

..., excluding the central mirror and their total reflective areas are fixed at around 4.4   m 2 . 24 02 2009 28 07 2009 04 01 2010 photovoltaic power systems nonimaging solar concentrator concentrator photovoltaic uniform illumination flux distribution ray-tracing...

... could perform as well as a classical heliostat, there may be a considerable amount of shading within one element. To evaluate the characteristics of a minimirror array (MMA), its performance was evaluated in a ray-tracing model and compared with the performance of a conventional heliostat (reference...

... 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. To illustrate the coordinate data that can be obtained using photogrammetry...