An experimental and numerical study of the gap effect on wind load on heliostat

	An experimental and numerical study of the gap effect on wind load on heliostat
	Wang ZF(王志峰)
刊名	Renewable Energy
	2010
期号	35 页码:797
通讯作者	王志峰
中文摘要	The main handicap of the concentrating solar power technology is still the higher cost compared with the conventional coal power plant. Heliostat arrays cause about 40% of the costs of central receiver power plants. The cost reduction of heliostats is of crucial importance to central receiver power plants. The reduction of wind load on heliostats will decrease the structural requirement for heliostats, and then cut the cost of heliostats. In this paper, different gap sizes (0~40mm) between the facets of the heliostats were studied experimentally and numerically. Both of the results showed that the wind load increases slightly with the increase of gap size (0~40mm). The result of the numerical simulation shows the flow pattern through the gap resembles a jet flow which does not affect the static pressure on the windward surface but does decrease the static pressure on the leeward surface of the facets. Consequently it increases the total drag force on the heliostat. However, the absolute increment of the wind load is very small compared with the overall wind load on the heliostat structure. It is not necessary to take account of the gap size effects on the wind load during the design process of heliostat
学科主题	传热学
收录类别	2
公开日期	2010-09-30
附注	The main handicap of the concentrating solar power technology is still the higher cost compared with the conventional coal power plant. Heliostat arrays cause about 40% of the costs of central receiver power plants. The cost reduction of heliostats is of crucial importance to central receiver power plants. The reduction of wind load on heliostats will decrease the structural requirement for heliostats, and then cut the cost of heliostats. In this paper, different gap sizes (0~40mm) between the facets of the heliostats were studied experimentally and numerically. Both of the results showed that the wind load increases slightly with the increase of gap size (0~40mm). The result of the numerical simulation shows the flow pattern through the gap resembles a jet flow which does not affect the static pressure on the windward surface but does decrease the static pressure on the leeward surface of the facets. Consequently it increases the total drag force on the heliostat. However, the absolute increment of the wind load is very small compared with the overall wind load on the heliostat structure. It is not necessary to take account of the gap size effects on the wind load during the design process of heliostat
内容类型	期刊论文
源URL	[http://ir.iee.ac.cn/handle/311042/1738]
专题	电工研究所_太阳能热发电技术研究组_太阳能热发电技术研究组_期刊论文
推荐引用方式 GB/T 7714	Wang ZF. An experimental and numerical study of the gap effect on wind load on heliostat[J]. Renewable Energy,2010(35):797.
APA	王志峰.(2010).An experimental and numerical study of the gap effect on wind load on heliostat.Renewable Energy(35),797.
MLA	王志峰."An experimental and numerical study of the gap effect on wind load on heliostat".Renewable Energy .35(2010):797.