加载中…是飞鸟？还是一架飞机？原来是一架太阳能飞机！
(2013-05-21 10:36:32)
标签：
杂谈 |
分类： 科学与技术 |
http://photos.state.gov/libraries/amgov/3234/Week_2/05162013_solarplane-600.jpg
“阳光动力号”采用各种先进的太阳能和电池技术，能够日夜飞行，现正在飞越美国大陆的途中。
当莱特兄弟（The Wright Brothers）1903年进行第一次飞行时，他们的成功曾经让世界各地的人们浮想联翩。现在，有一架太阳能飞机横跨美国东西海岸飞行，不禁再度令人万分激动。
如上图所示，翼展与一架波音747客机（Boeing 747）相当的“阳光动力号”（Solar Impulse）飞机正在进行横跨美国大陆的飞行。它采用总部位于硅谷（Silicon Valley）的“太阳能公司”（SunPower Corporation）制造的大约12,000块光伏电池为其四个电动引擎提供动力。美国能源部（Department of Energy）在5月15日发布的新闻稿中说，它将分段飞越美国，从旧金山市（San Francisco）飞至华盛顿，再到纽约市（New York City）。
通过扩展创新的疆界，“阳光动力号”正在展现出太阳能的潜力。它采用各种先进的太阳能和电池技术，使它在白天和夜晚都能够飞行。
但其中也有适用于陆地的创新成果。美国能源部的“升夏倡议”（SunShot Initiative）为扩展太阳能科学的疆界提出了大胆的目标：到2020年之前使太阳能具有与矿物燃料发电（fossil fuel electricity）抗衡的成本竞争力。例如，“升夏倡议”正在支持将晶体硅电池的厚度降低为原来的二十分之一。这些更加轻便的光伏电池——厚度不超过人类发丝的直径——资源用量更少，因而显著节约成本。
终有一天，太阳能和其他可再生能源技术将成为最经济实惠的可用能源资源。
如需了解更多有关美国能源创新（U.S. energy innovations）的信息，可访问美国能源部网站。
Read more: http://iipdigital.usembassy.gov/st/chinese/inbrief/2013/05/20130517147568.html#ixzz2TtIYsAG6
Is It a Bird? Or a Plane? It’s a Solar Plane!
http://photos.state.gov/libraries/amgov/3234/Week_2/05162013_solarplane-600.jpg
The Solar Impulse is crossing the United States using advanced solar and battery technologies that enable it to fly both day and night.
When the Wright brothers first took flight in 1903, their success captured the imagination of people around the world. That excitement is being rejuvenated by the coast-to-coast flight of a solar aircraft.
With a wingspan equal to that of a Boeing 747, the Solar Impulse, shown above, is crossing the United States using roughly 12,000 solar photovoltaic cells made by Silicon Valley–based SunPower Corporation to power its four electric engines. It will fly across America in stages, from San Francisco to Washington and New York City, the Department of Energy said in a May 15 press release.
By pushing the boundaries of innovation, Solar Impulse is demonstrating solar energy’s potential. It incorporates advanced solar and battery technologies that enable it to fly both day and night.
But there’s also innovation here on terra firma. The U.S. Department of Energy’s SunShot Initiative is pushing the boundaries of solar science with a bold goal: making solar energy cost-competitive with fossil fuel electricity by 2020. For example, SunShot is supporting efforts to reduce the thickness of crystalline silicon cells by a factor of 20. These lighter photovoltaic cells — no thicker than a human hair — use fewer resources, resulting in significant cost savings.
One day, solar and other renewable technologies will be the most affordable energy resources available.
See the Department of Energy website for more on U.S. energy innovations.
Read more: http://iipdigital.usembassy.gov/st/english/inbrief/2013/05/20130516147492.html#ixzz2TtIaHMx8
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