Research on field transmission efficiency of heliostat based on optical trace tracking technology

Lei Luo

doi:10.54097/1vqc2955

Authors

Lei Luo

DOI:

https://doi.org/10.54097/1vqc2955

Keywords:

Optical trace tracing method, Efficiency model of heliostat, Average optical efficiency, Average thermal output power.

Abstract

Nowadays, the Dingsun mirror field has been gradually put into the actual production, the Dingsun mirror field makes the highest utilization efficiency of light energy is a problem of great significance. By establishing the efficiency model of heliostat, the optical efficiency of heliostat field is calculated by using the light trace tracing method. First of all, the coordinate system is established and the sun altitude Angle and azimuth Angle at different times are calculated according to the longitude and latitude of the helioscope field. Then, considering that the optical efficiency is affected by the shadow blocking efficiency, cosine efficiency and collector truncation efficiency, the solution model of each efficiency is obtained by consulting literature. The shadow occlusion efficiency is studied by using the optical trace tracking method, and the adjustment model of heliostat is established. The average annual optical efficiency is 0.44, the average annual thermal output power is 27.16MW, and the average annual thermal output power per unit mirror area is 0.43kW/m2. The feasibility and accuracy of each efficiency model are verified by a concrete example, which lays a foundation for defining the design of mirror field.

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