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Limits to solar thermal energy set by intermittency and low DNI: Implications from meteorological data

机译:间歇性和低DNI对太阳能热能的限制:气象数据的影响

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摘要

Hourly DNI data from the Australian Bureau of Meteorology over 8 years have enabled analysis of implications for solar thermal power generation systems. Six sites were selected, mostly in central Australia and the occurrence and duration of gaps in the availability of energy inputs to solar thermal generation were tallied. In a three month period late in 2010 12 periods of three or more days with an overall average DNI of 2.3 kWh/m~2/day occurred. The relationship between DNI and solar thermal generation efficiency was examined and this indicated that on many more days power output would have been very low or zero. The relation between daily total DNI and hourly average DNI was also found to be important, as a high total might be made up of many hours in which DNI was too low for significant generation. These two factors show that there is a significant problem of intermittency for solar thermal systems. Although the annual output of each plant may be commercially viable a solar thermal system might not be capable of meeting demand reliably.
机译:澳大利亚气象局过去8年的每小时DNI数据已使分析太阳能热发电系统的意义成为可能。选择了六个地点,主要在澳大利亚中部,并记录了太阳热能发电输入中可利用的缺口的发生时间和持续时间。在2010年下半年的三个月中,发生了12个三天或以上的时段,总体平均DNI为2.3 kWh / m〜2 / day。研究了DNI与太阳能热发电效率之间的关系,这表明在更多的日子里,功率输出会非常低或为零。还发现每日总DNI与每小时平均DNI之间的关系也很重要,因为较高的总DNI可能由许多小时组成,其中DNI对于显着发电而言太低。这两个因素表明,太阳能热系统存在严重的间歇性问题。尽管每个工厂的年产量可能在商业上可行,但是太阳能热系统可能无法可靠地满足需求。

著录项

  • 来源
    《Energy Policy》 |2013年第12期|910-917|共8页
  • 作者

    Ted Trainer;

  • 作者单位

    Social Sciences, Arts, University of NSW, Kensington 2052, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Renewable energy; Solar thermal power; Limits to growth;

    机译:再生能源;太阳能火电;增长的限制;

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