Numerical investigation of the solar concentrating characteristics of 3D CPC and CPC-DC |
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Authors: | Gui-Long Dai Xin-Lin Xia Chuang Sun Hao-Chun Zhang |
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Affiliation: | School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 15001, China |
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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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Keywords: | 3D CPC CPC-DC Solar concentration characteristics MCRT method |
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