工程师研究促进太阳能利用率
文章来源:未知 文章作者:enread 发布时间:2011-01-12 03:46 字体: [ ]  进入论坛
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The growing popularity of solar photovoltaic(光电的) (PV) systems across the United States has made it more important to maximize their power input1. That's why UC San Diego environmental engineering professor Jan Kleissl is working on technologies and methods that will better predict how much power we can actually harness(治理) from the sun. In a paper recently published in the journal Renewable Energy (http://www.sciencedirect.com/science/journal/09601481), "Optimum fixed2 orientations3 and benefits of tracking for capturing solar radiation in the continental4 United States," Kleissl and his Ph.D. student Matt Lave explain why it's important to strategize on solar installation, depending upon the location of the building relative to the sun. For example, Kleissl and his students at the UC San Diego Jacobs School of Engineering have improved the solar map (http://solar.ucsd.edu/) for the state of California, which allows homeowners, photovoltaic installers and utilities to better predict how much energy they will get out of their solar systems. The map can be viewed via Google Earth for free.

"Probably the most important result of this work for California is that in all coastal5 areas (Los Angeles, San Francisco, San Diego) it is advantageous6 to install the panels facing about 10-degrees west of south," Kleissl said. "This not only optimizes7 energy production, but it also improves the correlation8 of solar power production with the load. Panels facing southwest 'see' the sun longer and at a better angle than panels facing south, which means that the energy generated is larger during the peak demand hours (3-to-5p.m.), making the energy more valuable. The generally clear conditions during the annual load peaks (also known as Santa Anas to Southern Californians) mean that the solar panels produce at the optimum(最适宜的) power. On the other hand, wholesale9(批发的,大规模的) energy prices during the peak time may be 10 times those during other days. In a future with more variable electricity rates this margin10 may tip the balance of economics in favor of solar energy and there will be greater incentives11 for installing panels facing southwest. Our maps show that there are already benefits of doing so now as the energy generation increases."



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1 input X6lxm     
n.输入(物);投入;vt.把(数据等)输入计算机
参考例句:
  • I will forever be grateful for his considerable input.我将永远感激他的大量投入。
  • All this information had to be input onto the computer.所有这些信息都必须输入计算机。
2 fixed JsKzzj     
adj.固定的,不变的,准备好的;(计算机)固定的
参考例句:
  • Have you two fixed on a date for the wedding yet?你们俩选定婚期了吗?
  • Once the aim is fixed,we should not change it arbitrarily.目标一旦确定,我们就不应该随意改变。
3 orientations 0fe4bdb2d2133dafeb851bee3d9c63d0     
n.方向( orientation的名词复数 );定位;(任职等前的)培训;环境判定
参考例句:
  • Welfare comparisons are also hindered by differences in orientations among economic systems. 经济制度之间倾向性的差别也会妨碍福利的比较。 来自辞典例句
  • Their different value orientations led to different results in literary creation. 价值取向的分野亦导致了不同的创作局面。 来自互联网
4 continental Zazyk     
adj.大陆的,大陆性的,欧洲大陆的
参考例句:
  • A continental climate is different from an insular one.大陆性气候不同于岛屿气候。
  • The most ancient parts of the continental crust are 4000 million years old.大陆地壳最古老的部分有40亿年历史。
5 coastal WWiyh     
adj.海岸的,沿海的,沿岸的
参考例句:
  • The ocean waves are slowly eating away the coastal rocks.大海的波浪慢慢地侵蚀着岸边的岩石。
  • This country will fortify the coastal areas.该国将加强沿海地区的防御。
6 advantageous BK5yp     
adj.有利的;有帮助的
参考例句:
  • Injections of vitamin C are obviously advantageous.注射维生素C显然是有利的。
  • You're in a very advantageous position.你处于非常有利的地位。
7 optimizes fcfef9a73b510e287b1dd176188a51fc     
v.使最优化,使尽可能有效( optimize的第三人称单数 )
参考例句:
  • Emerson optimizes PlantWeb engineering work processes by joining Intergraph's SmartPlant alliance program. 加入Intergraph的SmartPlant联盟计划,艾默生优化了PlantWeb工程工作步骤。 来自互联网
  • The algorithm optimizes the flow of inter mode of macro-block decision algorithm. 算法优化了宏块帧间模式选择算法的流程。 来自互联网
8 correlation Rogzg     
n.相互关系,相关,关连
参考例句:
  • The second group of measurements had a high correlation with the first.第二组测量数据与第一组高度相关。
  • A high correlation exists in America between education and economic position.教育和经济地位在美国有极密切的关系。
9 wholesale Ig9wL     
n.批发;adv.以批发方式;vt.批发,成批出售
参考例句:
  • The retail dealer buys at wholesale and sells at retail.零售商批发购进货物,以零售价卖出。
  • Such shoes usually wholesale for much less.这种鞋批发出售通常要便宜得多。
10 margin 67Mzp     
n.页边空白;差额;余地,余裕;边,边缘
参考例句:
  • We allowed a margin of 20 minutes in catching the train.我们有20分钟的余地赶火车。
  • The village is situated at the margin of a forest.村子位于森林的边缘。
11 incentives 884481806a10ef3017726acf079e8fa7     
激励某人做某事的事物( incentive的名词复数 ); 刺激; 诱因; 动机
参考例句:
  • tax incentives to encourage savings 鼓励储蓄的税收措施
  • Furthermore, subsidies provide incentives only for investments in equipment. 更有甚者,提供津贴仅是为鼓励增添设备的投资。 来自英汉非文学 - 环境法 - 环境法
TAG标签: energy power solar
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