WIND TUNNEL STUDY OF WIND EFFECTS ON HELIOSTAT
Large-area, glass-metal heliostats have collection areas in the range of 100 to 200m2;they are the culmination of more than 10 years of development of commercial heliostats for solar thermal central receiver technology. The heliostats of Solar Tower power station locates at open terrain or suburban terrain, with high accuracy requirements during working. However, it is sensitive to gust, so wind load and wind-induced response should be an important factor in design. Realistic heliostats design requirements must be set to allow efficient, non-conservative, and thereby low-cost structures which still result in good heliostat performance. Monitoring of wind effects on heliostats such as the SPECO heliostat and the ATS heliostat can give important validation of design procedures and assurance of acceptable behavior. In fact, measurements of wind effects on prototype heliostats are very useful to further the understanding of wind-resistant structural design. Some studies have addressed the wind loads on the prototype heliostat in previous work. Wind tunnel testing is also an effective method for investigating wind effects on heliostats. The full-scale measurements can provide reliable but limited information. The wind tunnel test can generate detailed and additional results that are not available from the field measurements. Therefore, the full-scale measurements and the wind tunnel study are complementary so that the understanding of wind effects on heliostats can be improved. It was found from the previous wind tunnel testing that the wind effects of heliostats need to be studied comprehensively, which will be conducted in this paper. Taking a heliostat as example, this paper provides some useful results for the heliostat wind-resistance design by wind tunnel testing, including force coefficients and pressure contour.
Heliostat Wind tunnel study Wind effects
Bo Gong Zheng-Nong Li Qiu-Sheng Li
College of Civil Engineering, Hunan University, Changsha 410082, P.R. China
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
1643-1648
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）