A photographic method to estimate the shading effect of obstructions

详细信息    查看全文

• 作者：Maurizio Cellura ; Alessandra Di Gangi ; Aldo Orioli ; ^{orioli@dream.unipa.it}
• 关键词：Shading ; Solar access ; Solar path ; Photovoltaic ; Photograph
• 刊名：Solar Energy
• 出版年：2012
• 出版时间：March, 2012
• 年：2012
• 卷：86
• 期：3
• 页码：886-902
• 全文大小：2516 K

文摘

A new, simplified photographic method is proposed to estimate the shading effects of obstructions. In spite of the complex mathematical background of the new tool, its practical application is very simple, and only requires the measurements of three angles for each photograph. The proposed method is particularly useful for overcoming the difficulties caused by the need to accurately describe surrounding objects to estimate shading effects. The new method uses the information contained in a picture and allows one to draw daily solar paths directly on the photograph. The procedure is useful to verify the suitability of a generic site for solar exploitation; its main benefit is the simplicity of use and the transparency of the obtained results. This simple method is also particularly suitable to evaluate the technical feasibility of small solar equipment, which would not require complex software to define the daily solar path.