在线观看亚洲精品专区-在线观看亚洲免费-在线观看亚洲免费视频-在线观看亚洲欧美-欧美freexxx-欧美free嫩交video

食品伙伴網服務號
 
 
當前位置: 首頁 » 專業英語 » 英語短文 » 正文

什么是清潔能源 Clean Energy

放大字體  縮小字體 發布日期:2008-05-07
核心提示:Clean energies are forms of energy which do not pollute the air, the ground, or the sea. Clean energies include: Solar power Solar power describes a number of methods of harnessing energy from the light of the Sun. It has been present in many tradit


Clean energies are forms of energy which do not pollute the air, the ground, or the sea.

Clean energies include:

Solar power

Solar power describes a number of methods of harnessing energy from the light of the Sun. It has been present in many traditional building methods for centuries, but has become of increasing interest in developed countries as the environmental costs and limited supply of other power sources such as fossil fuels are realized. It is already in widespread use where other supplies of power are absent such as in remote locations and in space.

As the Earth orbits the Sun, it receives approximately 1,400 W / m² of energy, as measured upon a surface kept normal (at a right angle) to the Sun (this number is referred to as the solar constant). Of the energy received, roughly 19% is absorbed by the atmosphere, while clouds on average reflect a further 35% of the total energy. The generally accepted standard is 1020 watts per square meter at sea level.

After passing through the Earth's atmosphere, most of the sun's energy is in the form of visible and ultraviolet light. Plants use solar energy to create chemical energy through photosynthesis. We use this energy when we burn wood or fossil fuels or when we consume the plants as a source of food.

Wind power

Wind power is the kinetic energy of wind, or the extraction of this energy by wind turbines. This article deals mainly with the intricacies of large-scale deployment of wind turbines to generate electricity.

Wave power

Wave power refers to the capture of ocean surface wave energy to do useful work including electricity generation, desalination, and filling a reservoir with water. Wave power is a form of renewable energy. Though often co-mingled, wave power is physiologically distinct from the diurnal flux of tidal power and the steady gyre of ocean currents which are powered by the earth's rotation. Wave power generation is not a widely employed technology with only a few experimental sites in existence.

Salinity gradient power

Salinity Gradient is a technology that takes advantage of the osmotic pressure differences between salt and fresh water.

If we place a semipermeable membrane (like that in a reverse osmosis filter) between sealed bodies of salt water and fresh water, the fresh water will gradually travel through the filter by osmosis. By exploiting the pressure difference between these two bodies of water we can extract energy commensurate to the difference in pressure.
 
Tidal power

Tidal power is a means of electricity generation achieved by capturing the energy contained in moving water mass due to tides. Two types of tidal energy can be extracted: kinetic energy of currents due the tides and potential energy from the difference in height (or head) between high and low tides.

Geothermal power

Geothermal power is electricity generated by utilizing naturally occurring geological heat sources. It is a form of renewable energy.

Some renewable energies are not clean energies - for example:

Biofuels because they release NOX and particulates into the environment.
Hydroelectric power because it destroys the river basin and has a negative effect on fish migration.


更多翻譯詳細信息請點擊:http://www.trans1.cn
 
關鍵詞: 清潔 能源
[ 網刊訂閱 ]  [ 專業英語搜索 ]  [ ]  [ 告訴好友 ]  [ 打印本文 ]  [ 關閉窗口 ] [ 返回頂部 ]
分享:

 

 
推薦圖文
推薦專業英語
點擊排行
 
 
Processed in 0.175 second(s), 17 queries, Memory 0.88 M
主站蜘蛛池模板: 欧美淫| 免费黄色小视频 | 唯美久草 | 久久狠狠第一麻豆婷婷天天 | 亚洲男人的天堂在线播放 | 一区二区中文字幕 | 性xxxfreexxxx性欧美 | 人人免费人人专区 | 高清在线观看视频 | 欧美精品网 | 爱爱小说视频永久免费网站 | 精品伊人久久大线蕉地址 | 俺去啦最新官网 | 尻逼尻逼 | 午夜视频网站在线观看 | 美女把尿口扒开让男人桶出水 | 丰满放荡岳乱妇91www | 日本加勒比视频在线观看 | 性色在线视频精品 | 伊人网综合在线 | 欧美日韩高清性色生活片 | 天天av天天翘天天综合网 | 久操视屏| 速度与激情10 | 色偷偷91综合久久噜噜 | 美女网站黄在线看 | 五月天激情在线 | 妇乱子伦激情 | 美女写真mm爽爽爽 | 男女在线视频 | 人人爽天天碰天天躁夜夜躁 | 真实偷清晰对白在线视频 | 亚州人成网在线播放 | 极品美女洗澡后露粉嫩木耳视频 | 久久综合久色欧美婷婷 | 免费人成在线观看网站品爱网日本 | 很黄很黄的网站免费的 | 久久久久国产一级毛片高清版 | 欧美色综合高清免费 | 68日本xxxxxxxxx| 免费观看欧美一级片 |