Optical study of solar tower power plants

Tunisia-Japan Symposium: R&D of Energy and Material Sciences for Sustainable Society

能源学;材料科学;政治学;社会学

Eddhibi, F.^1 ; Amara, M Ben^1 ; Balghouthi, M.^1 ; Guizani, A.^1

Thermal Process Laboratory, Research and Technology Center of Energy, P.B No. 95, Hammam Lif

2050, Tunisia^1

关键词: Atmospheric attenuation;    Central receivers;    Concentrating solar;    Electricity generation;    Heliostat field;    Optical efficiency;    Reflective mirrors;    Solar tower power plants;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/596/1/012018/pdf
DOI  :  10.1088/1742-6596/596/1/012018

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The central receiver technology for electricity generation consists of concentrating solar radiation coming from the solar tracker field into a central receiver surface located on the top of the tower. The heliostat field is constituted of a big number of reflective mirrors; each heliostat tracks the sun individually and reflects the sunlight to a focal point. Therefore, the heliostat should be positioned with high precision in order to minimize optical losses. In the current work, a mathematical model for the analysis of the optical efficiency of solar tower field power plant is proposed. The impact of the different factors which influence the optical efficiency is analyzed. These parameters are mainly, the shading and blocking losses, the cosine effect, the atmospheric attenuation and the spillage losses. A new method for the calculation of blocking and shadowing efficiency is introduced and validated by open literature.