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November 27 THE MAGLEV: The Super-powered Magnetic Wind Turbineby Mahesh
Renewable energy produced from the wind has garnered much attention and support in recent years but is often criticized for its low output and lack of reliability. But now a super power wind turbine has come along that may be just what the renewable energy industry needs. The MagLev wind turbine, which was first unveiled at the Wind Power Asia exhibition in Beijing, is expected take wind power technology to the next level with magnetic levitation. Magnetic levitation is an extremely efficient system for wind energy. Here’s how it works: the vertically oriented blades of the wind turbine are suspended in the air above the base of the machine, replacing the need for ball bearings. The turbine uses “full-permanent” magnets, not electromagnets — therefore, it does not require electricty to run. The full-permanent magnet system employs neodymium (”rare earth”) magnets and there is no energy loss through friction. This also helps reduce maintenance costs and increases the lifespan of the generator. Maglev wind turbines have several advantages over conventional wind turbines. For instance, they’re able to use winds with starting speeds as low as 1.5 meters per second (m/s). Also, they could operate in winds exceeding 40 m/s. Currently, the largest conventional wind turbines in the world produce only five megawatts of power. However, one large maglev wind turbine could generate one gigawatt of clean power, enough to supply energy to 750,000 homes. It would also increase generation capacity by 20% over conventional wind turbines and decrease operational costs by 50%. If that isn’t enough, the maglev wind turbines will be operational for about 500 years! Construction began on the world’s largest production site for maglev wind turbines in central China on November 5, 2007. Zhongke Hengyuan Energy Technology has invested 400 million yuan in building this facility, which will produce maglev wind turbines with capacities ranging from 400 to 5,000 Watts. In the US, Arizona-based MagLev Wind Turbine Technologies will be manufacturing these turbines. Headed by long-time renewable energy researcher Ed Mazur, the company claims that it will be able to deliver clean power for less than one cent per kilowatt hour with this new technology. It also points out that building a single giant maglev wind turbine would reduce construction and maintenance costs and require much less land than hundreds of conventional turbines. The estimated cost of building this colossal structure is $53 million.
风力发电机技术虽然一直到有在逐渐进步,但似乎总是脱不开传统的风车造型,而且各别的发电机占空间,发电量又不大。但新发展出来的这种「磁浮」风力发电机有着靠磁力和基座分开的扇叶,扇叶也是直立放置的。这种新的配置可以做出超巨型的发电机组,因为它不像传统的叶片受到重力的影响无法将各别的发电组做得很大。一台计划耗资五千三百万美元的单一磁浮发电机可以产生一千只传统发电机的电量,约足以提供 75 万户的电力。除了发电量大之外,它可以在每小时五公里的微风中运转、维护费用只有传统的一半,而且预估寿命长达 500 年。听起来很棒?其实或许它的来临没有想象中远。除了上图的美国版之外,国内的中科恒源也花了五百万美元盖了一座工厂,建造 400~5000 瓦等级的小型磁浮发电机。 November 24 合成生态物质将成为未来主要能源 from DW | |||||
| 德生物燃气巨头揣6亿到重庆投资 |
| 新华社 2007-11-18 13:04:12 | 据重庆新闻网报道,日前,德国生物燃气巨头EnviTec生物燃气股份有限公司有意斥资6亿人民币在重庆投资,计划在此建立一家生物燃气电厂。据悉,德国经济技术部官员率德国商团在重庆与当地企业见面并进行了商谈,除EnviTec外,还有11家德国企业有意在重庆投资并寻求合作。 | 据悉,此次赴重庆考察的11家德国企业携带了近20个项目,包括有塑料加工、医药、电子元件等。EnviTec公司中国区总经理Donatus von Helmolt表示,如果此次合作能够成功,建立的新厂将是中国最大的生物燃气发电厂。 November 03 中国2020年前将建23座核电站(核能时代的回归,是不是必然?)中国国务院批准了国家发展和改革委员会提出的《国家核电发展专题规划》,提出在2020年前新建23个核电站,主要集中在沿海省份。 根据规划,中国到2020年将新投产核电装机容量约2300万千瓦,这等于将有23个百万千瓦级核电机组投入运营。 规划中的核电站将主要安排在浙江、江苏、广东、山东、辽宁和福建6个沿海省。 此外,湖北、江西、湖南、吉林、安徽、河南、重庆、四川、甘肃等内陆省区市也不同程度地开展了核电厂址前期工作。 新华社报道指出,核电站对地质条件要求很高,少地震并且水源充足,目前中国已储备了一定规模的核电厂址资源。 加大发电量 国家发改委在《专题规划》中提出,中国大陆将争取在2020年前把地区核电运行装机容量提升到4000万千瓦。 按照目前在建和运行核电容量1696.8万千瓦计算的基础上,新投产核电装机容量约为2300万千瓦。 发改委认为,考虑核电的后续发展,中国2020年末在建核电容量应保持在1800万千瓦左右。 据估算,未来15年的核电项目建设资金需求总量约为4500亿元人民币,其中,15年内项目资本金需求量为900亿元,平均每年要投入企业自有资金54亿余元。 因涉及天然铀资源勘探与储备、乏燃料后处理等,核燃料配套资金需求量较大。 发改委文件指出,新核电厂建设的资金筹措原则上按企业自筹资本金,银行提供商业贷款方式运作。 |
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