Компания "ОРИОН"

[MrAlternativEnergy]

The Popular Matter : What's going on wind energy?</br>The Best Answer : Wind power is the conversion of wind energy into a useful form of energy, such as electricity, using wind turbines. At the end of 2008, worldwide nameplate capacity of wind-powered generators was 121.2 gigawatts (GW).[1] In 2008, wind power produced about 1.5% of worldwide electricity usage-[1][2] and is growing rapidly, having doubled in the three years between 2005 and 2008. Several countries have achieved relatively high levels of wind power penetration, such as 19% of stationary electricity production in Denmark, 11% in Spain and Portugal, and 7% in Germany and the Republic of Ireland in 2008. As of May 2009, eighty countries around the world are using wind power on a commercial basis.[2]Large-scale wind farms are connected to the electric power transmission network- smaller facilities are used to provide electricity to isolated locations. Utility companies increasingly buy back surplus electricity produced by small domestic turbines. Wind energy as a power source is attractive as an alternative to fossil fuels, because it is plentiful, renewable, widely distributed, clean, and produces no greenhouse gas emissions. However, the construction of wind farms is not universally welcomed because of their visual impact and other effects on the environment.Wind power is dispatchable generation and this is well understood, although not as dispatchable as conventional plant, which can be flexed over their whole range.[3] Whilst for economic operation, it is generally desirable that all of the available power is taken when it is available, when wind power forms a high proportion of energy input into a grid, it may be favorable to spill a certain proportion, before the natural limit is reached, by de-exciting the generator or blade feathering. For sudden wind power surges, power can be contrained off for a certain proportion, below the turbines' nameplate capacity. Conversely, as wind speed drops, power output can be maintained at a constant level by exciting the generator or increasing blade pitch to capture a higher proportion of the available wind power. The effect of this is to reduce the amount of spinning reserve needed from other conventional i.e. steam plant, at least while the wind is blowing.Other sources such as hydropower, standard load management techniques, and interconnection with adjacent systems (such as the proposed European super grid) can all be used to match supply with demand as they are with inflexible baseload power sources such as nuclear energy. The intermittency of wind seldom creates problems when using wind power to supply a low proportion of total demand. Where wind is to be used for a moderate fraction of demand such as 40%, additional costs for compensation of intermittency are considered to be modest.
A Popular Question : Is every fertilizer from renewable energy green?</br>The Best Response : No, not every.It is conceivable to use renewable energy in the production of a non-green or man made fertilizer.Green "Renewable Energy" vs "Non Renewable Energy" is a separate (although related) issue from "Green Organic Farming" versus "Man-Made Fertilizers".