Arid
DOI10.1016/j.egypro.2014.03.138
Evaluating solar radiation attenuation models to assess the effects of climate and geographical location on the heliostat field efficiency in Brazil
Cardemil, J. M.1; Starke, A. R.2; Scariot, V. K.2; Grams, I. L.2; Colle, S.2
通讯作者Starke, A. R.
会议名称International Conference of the SolarPACES
会议日期SEP 17-20, 2013
会议地点Las Vegas, NE
英文摘要

Most of the solar power plants using a central receiver which are currently in operation are installed in the Sun Belt region, specifically above the Tropic of Cancer. These plants are located in regions characterized by a dry summers and a yearly sum of Direct Normal Irradiation (DNI) of over 2300 kWh/m(2). These regions include the Mojave Desert (semi-arid climate) and Andaluc a in southern Spain (Mediterranean and semi-arid climate). Potential locations for installing such plants in Brazil, identified in previous studies, are the Sao Francisco river basin and the Sobradinho area in the Northeast Region of the country. These locations are characterized by high humidity levels and yearly DNI values ranging from 1800 to 2300 kWh/m(2), which is in clear contrast with the dry and desert climates where the solar tower projects currently in operation are located. Besides the combined effects of climate and the inter-tropicalization of the site, based on the solar angles and atmospheric attenuation, the potential locations in Brazil provide a small variation between the monthly averages DNI values. In this paper, the effects of these particularities on the performance of a heliostat field are assessed. For instance, the effects of the atmospheric water vapor and aerosol concentration on the optical performance of the heliostat field are analyzed. The results suggest that, for the same DNI level, the heliostat field in Brazil should be 4% larger due to the effect of the water vapor concentration in the atmosphere. This is an important finding, which shows that the current models for calculating the attenuation between the heliostat and the receiver need to be reviewed and compared with experimental observations and validated for the conditions prevailing at potential locations in Brazil. (C) 2013 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/)


英文关键词Central receiver attenuation loss heliostat efficiency Brazil
来源出版物PROCEEDINGS OF THE SOLARPACES 2013 INTERNATIONAL CONFERENCE
ISSN1876-6102
出版年2014
卷号49
页码1288-1297
EISBN*****************
出版者ELSEVIER SCIENCE BV
类型Proceedings Paper
语种英语
国家Chile;Brazil
收录类别CPCI-S
WOS记录号WOS:000340733700133
WOS类目Energy & Fuels ; Engineering, Mechanical
WOS研究方向Energy & Fuels ; Engineering
资源类型会议论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/303397
作者单位1.Univ Diego Portales, Sch Ind Engn, Santiago, Chile;
2.Fed Univ Santa Catarina UFSC, Dept Mech Engn, LEPTEN Lab Energy Convers Engn & Energy Technol, BR-88040900 Florianopolis, Santa Catarina, Brazil
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Cardemil, J. M.,Starke, A. R.,Scariot, V. K.,et al. Evaluating solar radiation attenuation models to assess the effects of climate and geographical location on the heliostat field efficiency in Brazil[C]:ELSEVIER SCIENCE BV,2014:1288-1297.
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