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Blue energy

机译:蓝色能源

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Several kilometres off the coast near Perth in Western Australia, hidden beneath the waves and out of sight of watchful boaters, three giant buoys will soon begin producing electricity as they bob to the rhythm of the Indian Ocean. At 11 metres wide and 5 metres tall, the squat orange floats look a bit like giant pumpkins. As waves pass by, the tethered buoys will drive hydraulic pumps on the sea bottom, converting the motion of the ocean into 720 kilowatts of electricity to power a nearby naval base.Carnegie Wave Energy of North Fremantle, Australia, plans to have the system - the latest attempt at harvesting power from the sea - up and running by June. The pilot project will generate a lot of press, but veterans of the marine-energy field will watch warily to see how it fares. This indus­try has taken a slow road: none of the myriad devices designed thus far has proved its worth in the highly competitive energy market, and few have survived prolonged exposure to the harsh conditions in the sea. Despite an overall investment of around US$735 million over the past decade bya dozen leading companies, marine power from tide and waves has yet to take off. In fact, it remains the most expensive form of power on Earth.
机译:西澳大利亚州珀斯附近海岸几公里处,隐藏在海浪中,看不见船夫,三个巨型浮标随着向印度洋的节奏摆动,将很快开始发电。宽11米,高5米的深橙色浮标看起来有点像巨型南瓜。随着海浪的通过,拴系浮标将驱动海底的液压泵,将海洋运动转化为720千瓦的电力,为附近的海军基地提供动力。澳大利亚北弗里曼特尔的卡内基波浪能源计划采用该系统-最近一次尝试从海中获取电力的尝试-到6月就可以投入使用。该试点项目将产生大量新闻,但海洋能源领域的资深人士将保持警惕,观察其进展情况。这种工业走的路很慢:到目前为止,设计的无数设备都没有在竞争激烈的能源市场中证明其价值,而且长期暴露在海洋的严酷条件下,几乎没有幸免。尽管在过去十年中,十几家领先公司的总投资额约为7.35亿美元,但潮起潮落的海洋动力尚未起飞。实际上,它仍然是地球上最昂贵的电力形式。

著录项

  • 来源
    《Nature》 |2014年第7496期|302-304|共3页
  • 作者

    JEFF TOLLEFSON;

  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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