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相比沙漠 农田或许才是太阳能发电的最佳场地

Farmland Also Optimal For Solar Power

农田也是太阳能发电的最佳选择

We often associate giant solar arrays with deserts. But the extreme heat can curb solar panels' potential.

我们往往把巨大的太阳能电池板与沙漠联系在一起。但高温会抑制太阳能电池板的潜力(即:电势/电位)。

It's like your laptop or your home computer. If it overheats, it slows down. So there's this tradeoff between having a lot, a lot of sun like in a desert, but if it gets too hot the efficiency of those panels drops.

“就如你的笔记本电脑或家用电脑一样,如果温度过热,电脑运行速度就会变慢。沙漠的光照很强,可是如果太热,太阳能板的能效就会降低,因此所以我们需要在这方面做出权衡,”

Oregon State University ecological engineer Chad Higgins. His team is interested in where photovoltaic panels should be located in order to maximize energy production. In addition to moderate temperatures and sunlight, they found that conditions for the most efficiency include low relative humidity and gentle winds that enhance transfer of heat from the panels. By analyzing satellite data for these four factors, they created a map of potential solar panel productivity for different land types around the globe. Coming out on top? Agricultural croplands.

俄勒冈州立大学生态工程师查德·希金斯表示到。他的团队对太阳能光伏电板应该放在哪里才能最大限度地提高能源产量很感兴趣。他们发现,最有效的条件除了适中的温度和光照之外,还包括较低的相对湿度和微风,这些条件都能加强天阳能电池板的热量传输效率。通过分析这四个因素的卫星数据,他们绘制了一张全球不同土地类型的潜在太阳能电池板生产力地图。而排在第一位的竟然是农业耕地。

And you think about it for a minute and it kind of makes sense. What is agriculture, but taking the sun's rays and converting it into a form of energy that we consume? So there's this sweet spot where you get a lot of sun but it's a temperate temperature and that is where you get the maximum productivity. And that's also where plants thrive.

“而你细想一分钟,这是有道理的。什么是农业?无外乎是吸收光照并化为我们消耗的能量。所以这是一个有很多阳光的理想位置,且温度适中,这里是获得最高生产力的地方,是植物生长的地方。”

Other factors also favor cropland solar.

其它等因素也有利于于农田太阳能。

Agricultural lands tend to be closer to population centers where there is a market for electricity, rather than way off in the desert. Agricultural lands tend to be flat. They tend to be already disturbed. So you don't have as many ecological conservation worries.

“农业用地往往更靠近有电力站的人口中心,而不会在遥远的沙漠里。农业用地趋于地势平坦。农业用地也往往已经受到干扰,所以不用再担心生态保护问题。”

Higgins' team thinks that agriculture and solar can complement each other, paving the way to a more sustainable energy future. The researchers estimate that installing photovoltaic panels on just one percent of croplands worldwide would be enough to meet all of humanity's global electricity needs. The study is in the journal Scientific Reports.

希金斯的团队认为,农业和太阳能可以互补,为更为可持续的能源未来铺平道路。研究人员估计,仅在全球1%的农田上安装光伏电池板就足以满足全球所有人的所有电力需求。这项研究发表在《科学报告》杂志上。

Higgins hopes the research will inspire collaborations between solar companies and farmers to feed the world and power it too. A prospect that should brighten anyone's day.

希金斯希望这项研究能激发太阳能公司和农民之间的合作,同时为世界提供食物和电力。这样的前景会让每个人的每一天都充满“光明”。

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