Journal
SOLAR ENERGY
Volume 85, Issue 11, Pages 2833-2842Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2011.08.022
Keywords
3D CPC; CPC-DC; Solar concentration characteristics; MCRT method
Categories
Funding
- China National Key Basic Research Special Funds [2009CB220006]
- National Natural Science Foundation of China [50930007]
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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. (C) 2011 Elsevier Ltd. All rights reserved.
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