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

2018 2nd International Workshop on Renewable Energy and Development

能源学;经济学

Wu, Weixiang^1 ; Li, Zhongnong^2 ; Wang, Zhifeng^3

School of Civil Engineering, Hunan City University, Yiyang

413000, China^1

Key Laboratory of Building Safety and Energy Efficiency, Hunan University, Ministry of Education, Changsha

410082, China^2

Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing

100190, China^3

关键词: Glass panels;    Multi channel;    Solar power tower;    Solar thermal power generation;    Wind characteristics;    Wind pressures;    Wind tunnel experiment;    Wind-resistant design;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/153/6/062025/pdf
DOI  :  10.1088/1755-1315/153/6/062025

来源: IOP

【 摘 要 】

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.