Study on gust coefficient of solar power tower heliostat based on wind tunnel experiment

Abstract

Heliostat is an important part of the tower solar thermal power generation system. In order to ensure the safety of the heliostat glass panel under wind load, wind resistant design parameters of the heliostat glass panel must be accurately achieved. Through accurate simulation of wind characteristics with the full measurement, heliostat scale rigid model of multi-channel synchronous wind tunnel experiment was conducted and obtained the wind pressure of heliostat panel under various conditions. Based on the analysis results, the gust coefficient for china’s specification to design this type of heliostat panel was obtained. The results also show that the actual wind characteristic parameters have a great influence on the value of gust coefficient, and the value of gust coefficient decreases with the increase of the heliostat’s height.