Abstract

A non-imagining solar concentrator, which is composed by involute reflectors, compound parabolic reflectors and tubular absorber, was designed and the concentrator was covered by evacuated glass tube to eliminate conductive and convective heat losses. In order to decrease the material cost and to increase ray acceptance, truncation effect was evaluated. Optimum truncation level was decided by some different ways. The ray tracing model was used to evaluate optical and thermal performance. The efficiency was compared to full size of the proposed solar concentrator.

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