Dust effect on thermal performance of flat plate solar collectors

doi:10.1115/1.4028364

	Dust effect on thermal performance of flat plate solar collectors
	Jing, Zhao 1; Zhiping, Wang 1; Kezhen, Wang 2; Jianbo, Liu 1
刊名	Journal of Solar Energy Engineering, Transactions of the ASME
	2015-02-01
卷号	137 期号:1
关键词	Dust Efficiency Chinese national standard Flat-plate solar collectors Instantaneous efficiencies Steady-state condition Temperature decrease Temperature rise Thermal Performance Total solar irradiance
ISSN号	01996231
DOI	10.1115/1.4028364
英文摘要	The solar collectors were exposed to the ambient conditions and left without cleaning for three months in winter in Lanzhou. In this paper, the effect of dust accumulation on the instantaneous efficiency, stagnation temperature and temperature rise of flat plate solar collectors is analyzed. The efficiency of solar collectors with and without dust in steady-state condition is measured following the Chinese National Standard GB/T 4271. Beside this, the stagnation test is carried out. The results show that the optical efficiency decrease of 9.7% and the stagnation temperature decrease of 0.3°C-7.2°C over time in a solar collector exposed for three months without cleaning. Furthermore, daily test is conducted. The efficiency, dust shading coefficient, and temperature rise of solar collectors are calculated by using experimental data. In this experiment, the dust shading coefficient changes between 0.83 and 0.94 during the whole day, and it is lower at noon than in the morning and evening hours. The efficiency difference and the temperature rise difference between the solar collectors with and without dust also vary with the dust shading coefficient, the optical efficiency, total solar irradiance, and mass flow rate during the whole day. © 2015 by ASME.
WOS研究方向	Energy & Fuels ; Engineering
语种	英语
出版者	American Society of Mechanical Engineers (ASME)
WOS记录号	WOS:000348145600017
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112333]
专题	能源与动力工程学院
作者单位	1.School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China; 2.Renewable Energy Laboratory, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Jing, Zhao,Zhiping, Wang,Kezhen, Wang,et al. Dust effect on thermal performance of flat plate solar collectors[J]. Journal of Solar Energy Engineering, Transactions of the ASME,2015,137(1).
APA	Jing, Zhao,Zhiping, Wang,Kezhen, Wang,&Jianbo, Liu.(2015).Dust effect on thermal performance of flat plate solar collectors.Journal of Solar Energy Engineering, Transactions of the ASME,137(1).
MLA	Jing, Zhao,et al."Dust effect on thermal performance of flat plate solar collectors".Journal of Solar Energy Engineering, Transactions of the ASME 137.1(2015).