A study of recent British study found that wind power plants, part of the power generation efficiency of power plants is extremely low. Analysis showed that at least 20 actual generation family tradition of insufficient power plant generating capacity of potential one-fifth of the maximum. Hong Kong which Bryce (Blyth) the actual wind power generation plant is expected to reach only 7.9%, ranked last.
According to "The Times" reported that natural gas and electricity market regulator, the Office of British Gas Electricity Market (Ofgem) analysis showed that plant size and construction time is nothing to do with the power generation efficiency.
The efficiency of wind turbines is based on the theoretical maximum power output and the actual output power ratio calculated. Ideally, the efficiency of wind farms up to 50%, but under normal circumstances is up to 25-30%.
Experts said that the assessment for a single wind farm to be careful, because its power output will be affected by many factors, and the change range is enormous. But even so, some people who oppose the establishment of wind farms or wind farm attack inefficiencies, insufficient to have any effect.
Sunday, December 26, 2010
Global energy revolution will lead to low carbonization
International Energy Agency pointed out that the world in renewable energy power generation (wind, solar, etc.) investment in 2008 reached 112 billion U.S. dollars the maximum; despite the global economic recession, but still maintain the original 2009 level of investment. Many large automobile companies are making hybrid vehicles and pure electric vehicles, and many countries to encourage consumers to buy such products for the growing new energy vehicle manufacturers to provide the market. In the next 10 years, there may be 5 million such vehicles on the road in various countries.
The IEA also noted that the Organization for Economic Cooperation and Development (OECD) member countries, the annual rate of efficiency improvement of up to 2%, which is the last century, more than twice the 90's. In the low-carbon technology research, development and demonstration of the funds between 2005 and 2008 increased by 1 / 3, reversing the 80 years since the last century, the decline in the situation. IEA partner countries and other economic organizations are working, planning to double investment in 2015.
"World Energy Outlook 2010" that if efforts fail to address climate change, then all of the above efforts will be wasted; Now the new energy development is not complete is fragile, to stop global warming is not enough.
"What we need is rapid, large-scale low-carbon technology; we need to achieve in the energy sector 'to carbon', cut off economic development and the historic links between carbon dioxide emissions, start a new era of electrification." Nobuo Tanaka said. "To note that there are 1.5 billion people worldwide do not have electricity, we must speed up the electrification process."
The IEA also noted that the Organization for Economic Cooperation and Development (OECD) member countries, the annual rate of efficiency improvement of up to 2%, which is the last century, more than twice the 90's. In the low-carbon technology research, development and demonstration of the funds between 2005 and 2008 increased by 1 / 3, reversing the 80 years since the last century, the decline in the situation. IEA partner countries and other economic organizations are working, planning to double investment in 2015.
"World Energy Outlook 2010" that if efforts fail to address climate change, then all of the above efforts will be wasted; Now the new energy development is not complete is fragile, to stop global warming is not enough.
"What we need is rapid, large-scale low-carbon technology; we need to achieve in the energy sector 'to carbon', cut off economic development and the historic links between carbon dioxide emissions, start a new era of electrification." Nobuo Tanaka said. "To note that there are 1.5 billion people worldwide do not have electricity, we must speed up the electrification process."
Green future: intelligent turbines effectively predict to use the energy resources
Smart air turbine can predict change, so the wind can significantly improve efficiency. The existing turbines are rotated by the wind and adjust the blade angle to work, and for complex and changing wind conditions, this approach can only work in some cases. However, using a class called LIDAR laser radar device can be monitored to 200 meters away from the turbines at the wind speed, the Danish Ris? National Renewable Energy Laboratory (Ris? National Laboratory for Sustainable Energy) in the care of the ? Phil Mickelson (Torben Mikkelsen ) says.
According to Mickelson introduction, had previously worked on the ground type LIDAR, used to monitor wind conditions. However, the laser device placed between the turbine blades the engine compartment, so as to continuously monitor the first time in the future wind conditions. Meanwhile, Mickelson said, using this prediction method is also the first time continued to adjust the turbine.
According to Mickelson, said remote monitoring of wind conditions can be set aside some time to change the blade direction and height, in order to achieve maximum efficiency. This approach can also reduce the need for the turbine load (in extreme wind conditions the maximum load can be reduced by 50%), extended equipment life. Nordex N90 2.5 MW turbine test results show that under appropriate conditions, LIDAR can improve turbine efficiency and the maximum of 8%.
According to Mickelson introduction, had previously worked on the ground type LIDAR, used to monitor wind conditions. However, the laser device placed between the turbine blades the engine compartment, so as to continuously monitor the first time in the future wind conditions. Meanwhile, Mickelson said, using this prediction method is also the first time continued to adjust the turbine.
According to Mickelson, said remote monitoring of wind conditions can be set aside some time to change the blade direction and height, in order to achieve maximum efficiency. This approach can also reduce the need for the turbine load (in extreme wind conditions the maximum load can be reduced by 50%), extended equipment life. Nordex N90 2.5 MW turbine test results show that under appropriate conditions, LIDAR can improve turbine efficiency and the maximum of 8%.
German latest research said 2009 global carbon emissions down 1.3%
German Renewable Energy Research Institute (IWR), said in August 13, 2009, global carbon dioxide emissions of 313 million tonnes, down 1.3% in 2009, this is the first time in ten years to achieve down.
IWR that the global economic crisis and for greater investment in renewable energy is caused by carbon emissions, the main factor in the decline. The Institute is located in Muenster, Germany, the German government to provide advisory services.
The use of renewable energy generation, heating and as fuel, the global investment last year's 120 billion U.S. dollars in 2008 rose to 125 billion euros (U.S. $ 161 000 000 000), IWR said.
But the agency director Knoch (Norbert Allnoch) said, if it is in Asia and the Middle East offset the increase in emissions of Russia, Japan and the United States to bring the effect of emissions reductions, given the economic crisis, the carbon dioxide emissions The reductions could be even greater.
IWR said the global investment in solar and wind energy to benefit from crisis prices fell, the equipment cost is reduced. But the agency also reiterated its earlier view that in order to prevent the rising trend of use of fossil fuels and stabilize global carbon dioxide emissions, the annual global investment in renewable energy should be increased to 4-fold, reaching 500 billion euros (U.S. $ 644,200,000,000 .)
IWR that the global economic crisis and for greater investment in renewable energy is caused by carbon emissions, the main factor in the decline. The Institute is located in Muenster, Germany, the German government to provide advisory services.
The use of renewable energy generation, heating and as fuel, the global investment last year's 120 billion U.S. dollars in 2008 rose to 125 billion euros (U.S. $ 161 000 000 000), IWR said.
But the agency director Knoch (Norbert Allnoch) said, if it is in Asia and the Middle East offset the increase in emissions of Russia, Japan and the United States to bring the effect of emissions reductions, given the economic crisis, the carbon dioxide emissions The reductions could be even greater.
IWR said the global investment in solar and wind energy to benefit from crisis prices fell, the equipment cost is reduced. But the agency also reiterated its earlier view that in order to prevent the rising trend of use of fossil fuels and stabilize global carbon dioxide emissions, the annual global investment in renewable energy should be increased to 4-fold, reaching 500 billion euros (U.S. $ 644,200,000,000 .)
The U.S. government promoted clean energy industry
According to Bloomberg Road, Obama 16 said the U.S. government to promote the clean energy industry and the introduction of preferential policies will help to provide employment opportunities, alleviating the unemployment rate remains high over an extended period in the recent to the community enormous pressure. The same can not be ignored is to develop clean energy, clean energy will be widely used in various fields, can bring great positive impact on the environment.
In this speech, Barack Obama, the battery maker, Wisconsin Energy Corporation ZBB (ZBB Energy Corp) as an example the application of clean energy to ease the employment pressure. The company provided the use of government loans $ 1,300,000 and 12 employees were renewed in the process of expanding the industrial chain hired 80 new employees. ZBB Energy Corporation in the inspection, the Obama administration is expected in 2012, the Government plans to expand the clean energy industry will create 800,000 more jobs, the scheme can not only create jobs in the short term, ease the employment pressure, and also help to lay the foundation for sustained economic growth.
Obama introduced 862 billion U.S. dollars economic stimulus plan was criticized by some Republican lawmakers, who believe that increased economic growth and employment situation and the Government had not expected. From the scheme approved last February, the U.S. unemployment rate rose from 8.2% to 9.5% in July this year, authorities predict the data in 2010 will reach 9.7%.
In this speech, Barack Obama, the battery maker, Wisconsin Energy Corporation ZBB (ZBB Energy Corp) as an example the application of clean energy to ease the employment pressure. The company provided the use of government loans $ 1,300,000 and 12 employees were renewed in the process of expanding the industrial chain hired 80 new employees. ZBB Energy Corporation in the inspection, the Obama administration is expected in 2012, the Government plans to expand the clean energy industry will create 800,000 more jobs, the scheme can not only create jobs in the short term, ease the employment pressure, and also help to lay the foundation for sustained economic growth.
Obama introduced 862 billion U.S. dollars economic stimulus plan was criticized by some Republican lawmakers, who believe that increased economic growth and employment situation and the Government had not expected. From the scheme approved last February, the U.S. unemployment rate rose from 8.2% to 9.5% in July this year, authorities predict the data in 2010 will reach 9.7%.
Water resource constraints become biofuel's biggest bottleneck
According to foreign media reports, the bio-fuel and oil than has the advantage that a variety of sources. But not every corner of the world's oil or gas can be found, but most people can grow crops to produce biofuels. The only shortcoming is the need for crop irrigation, when it comes to water resources, the attractiveness of biofuels on the greatly reduced.
Soybean, for example, according to the University of Texas ? Kerry and Michael Weber, said the bio-fuel made from soybeans requires only a small amount of water. However, if soybean in the growth process can not rely on rain water, and rely on irrigation to grow, it will need a lot of water. In the U.S., an average of a traveling one kilometer road transport energy needs, biofuels, then if the need requires 28 liters of water used to irrigate soybeans. The production of ethanol from corn is almost as much water. An ordinary motor fuel vehicles required to travel one kilometer of wheat needs about 26 liters of water to irrigation.
Currently, about 20% of the U.S. Midwest corn millet growing areas require irrigation. Corn production is the relatively large number of local irrigation district. This is a problem, because the irrigation water of rivers and lakes have been accounted for in the United States 37% of available water. Again compare the use of water by the oil industry, Weber data provided by: either use petrol or diesel as a power, driving a kilometer is about 0.33 l water. This is a conservative estimate, because it does not include the oil in the mining process itself will be from the well water. Even the oil resources in oil shale, tar sands and does not need so much water to separate. In fact, we need to separate these high-temperature oil ancillary products. Gold and Weber said the average tar sands water separation 0.78L/km, the average water separation of oil shale 0.59L/km.
Soybean, for example, according to the University of Texas ? Kerry and Michael Weber, said the bio-fuel made from soybeans requires only a small amount of water. However, if soybean in the growth process can not rely on rain water, and rely on irrigation to grow, it will need a lot of water. In the U.S., an average of a traveling one kilometer road transport energy needs, biofuels, then if the need requires 28 liters of water used to irrigate soybeans. The production of ethanol from corn is almost as much water. An ordinary motor fuel vehicles required to travel one kilometer of wheat needs about 26 liters of water to irrigation.
Currently, about 20% of the U.S. Midwest corn millet growing areas require irrigation. Corn production is the relatively large number of local irrigation district. This is a problem, because the irrigation water of rivers and lakes have been accounted for in the United States 37% of available water. Again compare the use of water by the oil industry, Weber data provided by: either use petrol or diesel as a power, driving a kilometer is about 0.33 l water. This is a conservative estimate, because it does not include the oil in the mining process itself will be from the well water. Even the oil resources in oil shale, tar sands and does not need so much water to separate. In fact, we need to separate these high-temperature oil ancillary products. Gold and Weber said the average tar sands water separation 0.78L/km, the average water separation of oil shale 0.59L/km.
British built the world's largest offshore wind power station
The world's largest offshore wind power plant in southeastern coastal areas in the UK has recently completed a total of 100 large wind turbines located here, and its annual power output of more than 20 million households to meet the electricity needs. It is reported that power station is located 12 km away from the UK North Sea side, the British Government vigorously promoting the "renewable energy plan," the important part.
Power spokesman said the body huge wind turbines can produce 500 million kilowatts per year of electricity. The data show that the base of each wind power up to 115 meters, an area equivalent to the entire 4000 football powerhouse. The wind power plant is expected to run at least 25 years. However, the only disadvantage is that wind power may be affected by the natural environment is relatively large, so occasionally interrupted power supply.
Power spokesman said the body huge wind turbines can produce 500 million kilowatts per year of electricity. The data show that the base of each wind power up to 115 meters, an area equivalent to the entire 4000 football powerhouse. The wind power plant is expected to run at least 25 years. However, the only disadvantage is that wind power may be affected by the natural environment is relatively large, so occasionally interrupted power supply.
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