Sources of Renewable Energy
If you are wondering what are the sources of renewable energy then you are in the right article and the theme of this article is to provide you information on the sources of renewable energy.
So how many sources of renewable energy? There are 5 sources of renewable energy and they are:
- Solar energy
- Wind energy
- Hydraulic energy
- The biomass
- Geothermal energy
Unlike fossil fuels (coal, gas and oil) which do not regenerate, renewable energies are constantly recreated.
Renewable energies are now very popular and it is increasingly possible to find a supplier of green electricity.
History of Renewable Energy
During prehistoric times, Man used only the biomass generated by fire. Subsequently, he experienced animal traction when he domesticated them. He continued to advance thanks to the invention of the sailing navy to move and carry out trade. The water and windmills then appeared. Humanity used natural renewable energies. Then came steam engines, diesel engines, electricity and geothermal energy in the 19th century. In the early 20th century, the first solar water heaters were put into operation in California. Wind turbines followed them and became widespread in the 1990s. At the start of the 21st century, thermal and photovoltaic renewable energies are increasingly ubiquitous. Nowadays, the main objective is to use renewable energies more and more to eradicate fossil fuels. Biomass, hydroelectricity, solar, marine energy, wind and geothermal energy are the main sources of renewable energy.
The sun transmits to us several electromagnetic rays such as infrared, gamma X, microwaves, radio waves, cosmic rays, etc. All these rays carry energy. Among them, two main ones are used. The first is solar thermal energy, because we capture the heat of the sun transmitted by the radiation of the latter. The second is the photovoltaic energy that we are using more and more. This energy captures solar radiation in order to produce renewable electricity. When solar radiation comes into contact with a body, it then increases the temperature of the latter. This is solar thermal energy. This energy has been known for centuries, because it is enough to put an object in the sun for it to heat up. Today, the supplier of renewable electricity uses this principle to produce green electricity to heat domestic water or premises. So there are solar ovens to heat food or solar panels to operate a solar water heater. On a large scale, as in the Sahara, solar thermal power plants have been built. Photovoltaic energy is therefore captured by a photovoltaic cell or panel. It uses sunlight or artificial light using a bulb. This renewable electrical energy is widely used in agricultural, industrial and private households. So there are solar ovens to heat food or solar panels to operate a solar water heater. On a large scale, as in the Sahara, solar thermal power plants have been built. Photovoltaic energy is therefore captured by a photovoltaic cell or panel. It uses sunlight or artificial light using a bulb. This renewable electrical energy is widely used in agricultural, industrial and private households. So there are solar ovens to heat food or solar panels to operate a solar water heater. On a large scale, as in the Sahara, solar thermal power plants have been built. Photovoltaic energy is therefore captured by a photovoltaic cell or panel. It uses sunlight or artificial light using a bulb. This renewable electrical energy is widely used in agricultural, industrial and private households.
Thanks to the intensive activity of the sun, air masses move in the atmosphere. This energy is called the wind. It is mechanical and powers wind turbines. Wind energy has been used since ancient times with sailboats and then with windmills from the Middle Ages. Currently, wind turbines have replaced windmills and are producing electricity. This green electricity is used on-site or injected into a distribution network. In the near future, these wind turbines could pick up winds aloft and could produce up to 100 times more electricity than at present.
The sun dries the water and this phenomenon causes water vapor to fall. We are then in the water cycle. When the latter returns to the oceans by rivers and streams, its energy is captured by hydroelectric dams then supplying electricity. Hydraulic energy is also formed by the movement of waves and tides. It exists thanks to underwater currents and is then called tidal energy. When it is called thermal energy from the seas, it is produced by temperature differences. There is still the osmotic energy that is created by mixing fresh water with sea water.
Energy from biomass is stored through photosynthesis. It is renewable on condition that what is burned is less than what is produced. Biomass comes from wood and biofuels. Today, we use wood, but also the waste we produce. This energy source is economical, but remains very polluting, because it uses and releases a lot of CO2. Currently, it is being studied cyanobacteria which would have the power to convert part of the solar energy into fuel.
Geothermal energy has been adopted by humans for over 2000 years. At that time, he used naturally hot water for thermal baths. Currently, we use this source of energy which is contained in the earth to heat or transform it into electricity. This heat from the earth is created by radioactivity found naturally in the Earth’s core and crust. Geothermal energy is actually created by a disintegration of thorium, uranium and potassium. It is the only energy not dependent on the sun. This energy is renewable and very ecological on the other hand, it represents a danger for humans. Indeed, the more it goes, the more we will look for it far in the depths of the earth. Because of this activity, pressures change and have an impact on earthquakes. Currently, it is mainly used for passive air conditioning, heating, air conditioning using a geothermal heat pump. By 2020, in our country, this energy should experience a growth of 6.
Green gas, an alternative to current gas
As fossil fuel reserves tend to run out, there is a possibility of producing renewable gas from biomass. This renewable natural gas greatly limits greenhouse gases. Biogas recycles carbon already present in our environment. This gas is generated by the fermentation of plant or animal organic matter where there is no oxygen. Thus, it is possible to recycle a large number of organic wastes such as agricultural residues of the slurry type or household and industrial wastes such as the sludge recovered in treatment plants. This green natural gas is also captured in basements by landfills and many other processes. It is distributed by a green gas supplier.