under the scrutiny of scientists recently renewable energy.Now is the time, which made us think about the future and made it clear that the use of mineral resources of the Earth can not be infinite.
Renewable energy sources (RES)
fusion reactions of the Sun is the main process of the emergence of alternative energy.According to the calculations of astronomers, the estimated life of the planet is five billion years, which gives an indication of the almost endless supply of solar radiation.Renewable energy sources - is not only the inflow of the Sun, and other derivatives - alternative: the movement of the wind, the waves and the water cycle.For a long time nature adapted to the use of solar radiation and thus has reached thermal equilibrium.This received energy does not lead to global warming, because running all the processes on the Earth, it returns back to space.Rational use of renewable energy is a top priority of scientists conducting research and development in this area.After all of the solar radiation received only a third of the used to maintain life processes on Earth, 0.02% is consumed by plants for photosynthesis they need, but remain unclaimed portion back into space.
Types and use of
Renewable energy sources consist of several main components:
- sun.In this case, the resulting stream is used directly through the solar panels.The conversion of electromagnetic radiation allows for the output of electricity or heat.
- Wind.With the help of wind turbines or windmills kinetic energy of the air mass is converted into heat or electrical current.Where implemented, such renewable energy sources, coal produced savings of up to 29 000 tons of oil and approximately 92,000 barrels per year.
- Geothermal water.As a coolant for power plants use hot geothermal springs.Geothermal power plants are being built in an area of volcanic activity zone, where the water rises to the surface of the ground and has a boiling point at the output.Are these underground sources at a relatively shallow depth, and access them via the drilled wells.
- water.Construction of power plants has allowed for energy use water stream.To use the potential of wave power stations are under construction wave, the power density exceeds the power of wind and solar installations.
National Laboratory of Denmark has prepared a report in which it was said that by 2050 the world will be able to go to energy with very low carbon emissions.At the same time the cost of it will be much less than the cost of extraction of natural resources from the earth.
