Renewable energy sources. Importance of use

Under the close attention of scientists in the lasttime renewable energy. The time has come that made us think about tomorrow and clearly understand that the use of Earth's minerals can not be infinite.

Renewable energy sources (RES)

The reaction of the thermonuclear synthesis of the Sun isthe main process of the emergence of alternative energy. According to the calculation of astronomers, the estimated life of this planet is five billion years, which makes it possible to judge the practically infinite reserves of solar radiation. Renewable sources of energy are not only incoming streams of the Sun, but also other derivatives - alternative sources: the movement of wind, waves and the water cycle in nature. For a long time, nature has adapted to the use of solar radiation and thus reached a thermal equilibrium. This received energy does not lead to global warming, since by launching all the necessary processes on Earth, it returns back to space. Rational use of renewable energy sources is a priority scientists, leading scientific developments in this field. After all, of the total solar radiation received, only a third is used to support life processes on the Earth, 0.02% is consumed by plants for the photosynthesis they need, and the remaining unclaimed part is returned back to outer space.

Types and applications

Renewable energy sources consist of several main components:

• The sun. In this case, the received stream is used directly through solar panels. The transformation of electromagnetic radiation allows you to have at the output electrical or thermal energy.
• Wind. With the help of wind generators or windmills, the kinetic energy of the air mass is converted into a thermal or electric current. Where such renewable energy sources are introduced, coal is saved up to 29,000 tons and oil is about 92,000 barrels per year.
• Geothermal waters. Hot-source geothermal sources are used as a coolant for thermal power plants. GeoTES is being built in the area of ​​volcanically active zones, where water approaches the surface of the ground and has an outlet temperature of boiling. These underground sources are located at a relatively shallow depth, and access to them is through wells drilled.
• Water. The construction of power plants allowed the use of water flow as a source of energy. To use the potential of waves, wave power stations are built, the specific power of which exceeds the capacity of wind and solar installations.

The National Laboratory of Denmark prepared a report,where it was said that by 2050 the world will be able to switch to receiving energy with a very low level of carbon emissions. At the same time, its cost will be much less than the cost of extracting natural resources from the depths of the earth.