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SSS 2011-04-06

时间:2011-05-12 03:24来源:互联网 提供网友:wp661375   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.

Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby1 missing out on the majority of the solar energy reaching the cell. The sun's heat can be captured to warm up liquid that can then warm a building's water, but those devices don't generate electricity. Now, scientists have developed a single device to do both.

It's an array of clear tubes, each five milimeters in diameter. The tubes are filled with oil blended with a proprietary2 dye. A polymer photovoltaic gets sprayed onto the back of the tubes. When sunlight hits the tubes the liquid within becomes superheated. In a home situation, it would then flow into a heat pump to transfer that heat. Meanwhile, sunlight also strikes the polymer, where it's converted to electricity.

The scientists say that their device has a 30 percent efficiency in converting sunlight into power. Conventional solar-only devices with polymer absorbers have less than 10 percent efficiency. The research appears in the journal Solar Energy Materials and Solar Cells.

Continued research and development should shed more light—and a lot more heat—on the entire field of alternative energy production.

Thanks for the minute. For Scientific American's 60-Second Science, I'm Cynthia Graber.


点击收听单词发音收听单词发音  

1 thereby Sokwv     
adv.因此,从而
参考例句:
  • I have never been to that city,,ereby I don't know much about it.我从未去过那座城市,因此对它不怎么熟悉。
  • He became a British citizen,thereby gaining the right to vote.他成了英国公民,因而得到了投票权。
2 proprietary PiZyG     
n.所有权,所有的;独占的;业主
参考例句:
  • We had to take action to protect the proprietary technology.我们必须采取措施保护专利技术。
  • Proprietary right is the foundation of jus rerem.所有权是物权法之根基。
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