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VOA慢速英语[科技新闻]:美能源部启动新能源竞赛

2015-06-17    来源:普特英语听力    【      美国外教 在线口语培训
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From VOA Learning English, this is the Technology Report.

Experts say that sun and wind are the richest sources of clean, renewable energy. But ocean waves also create powerful, clean energy. So, the U.S Department of Energy has announced a $1.5 million-dollar prize for the winner of a competition on how to capture that energy.
 
The Department of Energy says that waves and tides along U.S. coasts create about 1,420 terawatt-hours of energy a year. That is equal to the amount of energy produced by more than 330 nuclear power factories.
 
But today’s technologies can only capture about 20 percent of the energy from ocean waves. Jose Zayas is the director of the Wind and Water Power Technologies Office at the Department of Energy. He says 20 percent is too low for an investment in ocean wave energy to be economical. He says it needs to be up in the high 30 percent to 40 percent.
 
“…we believe that once you achieve that then the economic competiveness of this industry really comes to life and that’s really the target that we are shooting for.”
 
The Department of Energy has launched the Wave Energy Prize competition to encourage development of new technologies.
 
But developing new devices to capture wave energy can be difficult. Wave capture machines must operate in oceans
 
Competition organizers expect most of the new ideas to come from established energy companies as well as some universities and research centers. Mr. Zayas says testing the new technologies will be done in several steps using scaled models. A scaled model is a smaller form of a larger object or structure.
 
“We would have 1/50th scale testing where we would do the first fundamental evaluation of their performance, as well as making sure that they are on a pathway that can assure them success towards a prize…and near the end, we will have about 10 teams, it is our hope.”
 
The scaled models will be tested at the United States Navy’s large indoor testing pool near Washington. Machines at the pool can create ocean-size waves. Mr. Zayas says the models will be tested to show how much ocean wave energy they can capture.
 
The competition will not require the machines to produce electrical power. He says changing the mechanical kinetic energy into electrical energy is easy.
 
Mr. Zayas says the main goal of the Wave Energy Prize is to develop a new set of power producing technologies for the future. Developers of the best performing devices will receive prizes from $250,000 to as much as $1.5 million.
 
I’m Jonathan Evans.

文本来源于普特论坛[report整理] SENEWS-2015-06-01


这里是美国之音科技报道。


专家表示太阳和风是清洁可再生能源最富裕的资源。但是海浪也能创造强大的清洁能源,所以,美国能源部宣布将悬赏150万美元奖励善用海浪能源竞赛的获胜者。

能源部称美国海岸的海浪和潮汐每年创造了1420万亿瓦时能量,相当于330多个核电厂发的电。

但是当今的技术仅能获取海浪中20%的能量。Jose Zayas是能源部风能和水能技术办公室主任,他称对于海浪能源投资的经济回报而言,仅仅20%的能源利用率太低。他表示需要提高到30%至40%。

“我们相信一旦达到,将真正实现该产业的经济竞争力,这才是我们真正寻求的目标。”

美国能源部启动的海浪能源竞赛旨在鼓励新技术的研发。

但是,发明可以汲取海浪能源的新设备并非易事,海浪汲取机器必须在海洋中操作。

大赛组织者预测多数新创意来自已创办的能源公司、一些大学和研究中心。Zayas称采用缩比模型并分几个阶段测试新技术。缩比模型是按照比例将较大物体或结构缩小的模型。

“我们将采用1/50的缩比模型测试,我们将初步估计性能,同时确保测试能成功赢得奖项,接近比赛结束时,我们希望有10支队。”

我们将在华盛顿附近的美国海军最大室内泳池测试缩比模型。池中的机器将创造海洋般的波浪。Zayas称将测试模型能汲取多少海浪能源。

比赛不要求机器产生电能,他称将机械势能转换成电能不难。

Zayas先生称海浪能源竞赛的主要目的是为未来研发出新的一套能源产出技术。最佳性能的设备研究人员将获得25万美元到150万美元的奖金。

我是Jonathan Evans。



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