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Development of Wind Energy and
New Wind Turbine System
Wind Power in KyushuUniversity Japan, Yuji Ohya professor.
If you are interested, please click the link below to a English-translated Kyuushu University page.
6-1 Kasuga-koen, Kasuga, Fukuoka, 816-8580, JAPAN
People's Mail addressed http://www.riam.kyushu-u.ac.jp/windeng/en_staff.html
Off-Shore Floating Energy Farm
Developed by Kyushu-Univ. : Current Progress
Research Institute for Applied Mechanics, Interdisciplinary Graduate
School of Engineering Sciences KYUSHU UNIVERSITY
Global energy issues and demands for CO2 reduction have further attracted interests in development of new energies. As drastic reviews are on-going on the safety understanding and the next scenarios of the nuclear power generation, safe natural energies such as solar, geothermal, hydro, tidal as well as wind energies should be seriously challenged for each effective and practical utilization.Japan is sometimes mentioned with its small land and lack of natural resources, but the total area of territorial waters and exclusive economic zone (EEZ) is the 6th largest in the world. Kyushu University is currently challenging for development of new energies including one with novel high power efficiency Wind-lens turbines. The challenge is on-going with an outlook on realising High Density Off-Shore Electric Power Generation Farm utilizing very wide Japanese EEZ.
Here, Integrated Off-Shore Electric Power Generation Farm“ means an off-shore energy farm on floating bodies with combined power generation systems such as wind, solar, tidal, wave, tension power applied to the anchoring wire, etc.
The first step has started towards Hybrid Off-Shore Electric Power Generation Farm with system development for off-shore wind power generation using 3kW Wind-lens turbines that have been developed by Wind-lens Research Team of Kyushu University. The plan in 2011 includes launching the floating body of ~18m diagonal in the east part of Hakata bay with two 3kW Wind-lens turbines.
For preparation, in March 2011, a large wave tank in Research Institute for Applied Mechanics, Kyushu University, was used for the theoretically- scaled model experiments for investigating motions of the float responding against high waves and strong winds.
During the test experiments in the wave tank, a harsh conditions was generated corresponding to a wave height of 6m and a wind speed of 30m in the natural condition, and the stable behaviour of the floating body against the condition was confirmed.
In the next stage for constructing the floating body in Hakata Bay, an Integrated Off-shore Floating Energy Farm (1-2MW) is being planned with connecting 100m size large floating bodies in the off-shore area in Japan. This farm will accommodate medium size (300kW at a wind speed of 12m/s) Wind-lens turbines according to the current plan.A prototype of the medium 100kW Wind-lens turbine can be seen in Kyushu University Ito Campas.
Stage III (plan)
Challenges for further scaling-up in future of Wind-lens turbine (1MW class) and Off-shore Energy Farm are on-going through researches on improving structural materials, supporting structure of the wind-lens, etc.
Dec 2011 Research Institute for Applied Mechanics, KYUSHU UNIVERSITY
CG supplied by Kyushu University, Off-Shore Floating
ECOSYSTEM ECOSYSTEM ECOSYSTEM ECOSYSTEM ECOSYSTEM ECOSYSTEM ECOSYSTEM
The climate changes the planet is currently undergoing, and the threats posed by greenhouse gases, all interlink with the entire planet's ecosystems which have been carefully balanced for millennia. Since the industrial age, this has changed, and the way we now exploit the Earth's resources affect everything in the chain. Forests, wetlands and oceans have absorbed carbon forever - now with mining, eradicating forests for agriculture etc., these gasses are building in the atmosphere and can endure there for a century permitting ever-increasing rises in temperature, which in turn leads to ice-melt and rising sea-levels. While world governments and individuals confront how to reduce energy levels which result in CO2 emissions, the ecosystems also need to be considered. Deforestation alone can add more of a threat to global warming than all the cars on the planet's roads. It's unfortunately a very complex subject, difficult to summarize in a few short paragraphs. It has been necessary for us, then, to give more attention to each of the major ecosystem issues where we can learn what went wrong, and what must be done to mitigate a looming crisis. Read more http://www.thinkglobalgreen.org/ECOSYSTEMS.html
◆CARBON DIOXIDE CO2◆ http://www.thinkglobalgreen.org/CARBONDIOXIDE.html
With CO2 now being declared a danger to human health by the US EPA , its significant threat as a greenhouse gas is given added importance as the leading cause of climate change and rising temperatures on the planet. The concentration of carbon dioxide in the atmosphere caused by the combustion of fossil fuels (coal, gas, & oil) has increased by around 40% since the beginning of the Industrial Revolution. As the level increases in the atmosphere and the oceans, we're getting further away from the solution. How much we can safely emit is in conflict with how very much more we produce - especially in North America. It's a problem that will be with us, and we need to understand why it's planet Earth's greatest threat. The planet will survive somehow, but will humanity?
According to EPA, American coal plants produce 386,000 tons of hazardous air pollutants per year. Coal-fired electric power generation emits around 2,000 pounds of CO2 for every megawatt-hour generated. The toxins they release, hazardous chemicals that can lead to disease, brain damage and premature death, affect every part of the human body. Arsenic, chromium and nickel cause cancer; lead damages the nervous system; acid gases irritate the nose and throat; dioxins affect the reproductive endocrine and immune systems; and volatile organic compounds weaken lungs and eyes. link The global dominance of industrial interests dependant on cheap energy sourced from coal means that climate change is inevitable. Unfortunately, there is enough cheap coal around to power ever-higher emissions for at least another century. The world will inevitably become much warmer.
Can We Replace U.S. Coal Power with Clean Energy?
Coal electric power generation is under enormous regulatory pressure to substantially reduce stack emissions. The EPA requires huge reductions in most coal plant emissions including carbon dioxide (CO2). As a result, most new coal power plant projects are being cancelled and many existing coal plants are expected to shutdown prematurely.
Coal accounts for 42% of total U.S. net power generation today. A very feasible strategy to quickly and substantially reducing U.S. CO2 emissions is replacing most or all of the coal consumed within the Electric Power Sector. The Power Sector consumes the vast majority of U.S. coal in about 600 power plants across the U.S. Replacing coal power with clean energy or clean power also provides an excellent synergy for reducing future Transportation Sector CO2 emissions. For future EV’s to eventually become ‘zero emission vehicles’ (ZEV’s) requires substantial reductions in fossil fuels used to generate U.S. electric power. Replacing all coal with clean power facilitates the actual development of future ZEV fleets.
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March 27, 2015 Taylor Hill is TakePart's associate environment and wildlife editor