Direct solar-radiation intensity measurement based on multiple off-axis hyperboloids fused with free-form surfaces
Abstract:
To realize year-round direct solar-radiation intensity measurement at all latitudes without mobile tracking, this study proposes a measurement method based on multiple off-axis hyperboloids fused with free-form surfaces and a new system architecture composed of direct solar-radiation measurement mirrors and pyroelectric sensors. Simulations showed the irradiance uniformity to be 97.95% and spot energy distribution uniformity to be 91.92% to 94.84%, which are better than those of similar methods in the international field of view. Performance tests also confirmed the correctness and feasibility of the proposed method. This study provides an improved theory and system design for direct solar-radiation intensity measurement.
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