STUDY ON PROBABILITY CHARACTERISTICS OF WIND-PRESSURE DISTRIBUTION OF TROUGH CONCENTRATOR INSTALLED ON FLAT ROOF

Zou Qiong; Wang Chao; Zeng Xuan; Zhao Yulong; Tang Haoyu; Liu Yichao

doi:10.19912/j.0254-0096.tynxb.2021-0726

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (12) : 144-153. DOI: 10.19912/j.0254-0096.tynxb.2021-0726

STUDY ON PROBABILITY CHARACTERISTICS OF WIND-PRESSURE DISTRIBUTION OF TROUGH CONCENTRATOR INSTALLED ON FLAT ROOF

Zou Qiong, Wang Chao, Zeng Xuan, Zhao Yulong, Tang Haoyu, Liu Yichao

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Abstract

In this paper, the mirror wind pressure of concentrator installed on flat roof trough is measured by wind tunnel experiment, and the probability characteristics of mirror wind pressure distribution are analyzed by high order moment and wind pressure time history curve and probability density histogram. The Gaussian criterion of mirror wind pressure distribution is obtained, and the division of mirror Gaussian region under typical working conditions is given. Then, the extreme wind pressure coefficient of the concentrator is calculated by Sadek-Simiu （SAD） method, and the contour map of the extreme wind pressure coefficient under typical working conditions is given. The distribution law and characteristics of the extreme wind pressure coefficient are analyzed. The maximum value of the mirror wind pressure is mainly in the corner area of the mirror edge, and the maximum value of the extreme wind pressure coefficient is 6.136 at the pitch angle of 30° and the wind direction angle of 45°.

Key words

solar concentrators / wind tunnels / roofs / probability distributions / extreme wind pressure

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Zou Qiong, Wang Chao, Zeng Xuan, Zhao Yulong, Tang Haoyu, Liu Yichao. STUDY ON PROBABILITY CHARACTERISTICS OF WIND-PRESSURE DISTRIBUTION OF TROUGH CONCENTRATOR INSTALLED ON FLAT ROOF[J]. Acta Energiae Solaris Sinica. 2022, 43(12): 144-153 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0726

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