Abstract :
A Monte Carlo Ray Tracing (MCRT) method was expanded with a bisection module to solve high-order nonlinear equations. Applying
this modified MCRT method, the solar concentrating characteristics of a 3D Compound Parabolic Concentrator (3D CPC) were
investigated. Moreover, a two-stage solar concentrator formed by a dish concentrator in tandem with a single 3D CPC (CPC-DC)
was presented in this paper. Considering the influence of the tracking errors and slope errors, the solar concentrating performances
of the CPC-DC was performed using the modified MCRT method. For DC having a rim angle of 45 , the numerical results show that
the interception efficiency of the DC is about 4.0% higher than that of CPC-DC, but the concentrator ratio of the CPC-DC is twice as
large as that of DC.
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