With the higher life expectancy and population outburst non-renewable energy, such as fossil fuel is gradually decreasing. We will soon run short of fossil fuel. In addition to this, fossil fuel emits a significant amount of carbon dioxide which causes global warming and greenhouse effect. With an advanced lifestyle alongside population outburst and drastic climate change, we are standing at the edge where we must use an alternative source of energy. We must exploit the renewable energy. Here are the types of renewable energies.
Traditionally, wood burns to generate energy. However, this emits a significant amount of carbon-di-oxide and ashes. However, there are other options to generate electricity from biomass. Bioethanols can use as bio-fuel. Bioethanol consists from sugar cane by the fermentation process.
In addition to this, biofuel can be produced from fatty acids found in plants and algae. The fatty acids are trans-esterifies to generate biofuel.
One of the fastest-growing and one widely uses renewable energy is solar energy. The photovoltaic cells installs to capture the heat coming from the sun. Moreover, the heat is then transferred to energy. Solar energy is widely used to boil water or as an alternative source of electricity. Solar energy is one of the renewable energy types that require less cost. However, installing photovoltaic cells is very difficult.
Wind power energy is one of the renewable energy types, that is reliable. The power of the wind transforms or converts into electricity. In many European countries wind power is used to generate electricity by installing windmills. However, the report stated that wind power could provide as high as 25 to 30% of global electricity by 2050 worldwide.
Renewable Energy: Tidal Power
Tidal power considers to be one of the potential sources of renewable energy. Tides are steady, and its periods are predictable. Tide mills came into being since the days of Ancient Rome and the Middle Ages. Back in time, people used to store incoming water in large ponds. However, when the tides start to backlash, they turned water wheels to generate mechanical power to mill grain.
Traditionally, tidal power required a relatively high cost. Moreover, limited sites were having amply higher tidal ranges or flow velocities. However, the recent advancement of technology has improved this scenario. Moreover, both the design and turbine technology has developed- this indicates that the availability of tidal power could be much higher than ever presumed.
Renewable Energy: Geothermal
However, Geothermal electricity is another renewable energy type. One considers source of energy to be sustainable and dependable. When heat energy comes from the inner surface of Earth, usually in the form of magma, hot springs or hydrothermal circulation, turbines use to convert this heat into energy. However, one can easily harness the geothermal energy in specific locations in the Earth. But the positive side is, in certain parts of the world, such as Indonesia, Iceland, and other regions show high levels of geothermal activity. These sources are easily accessible. Moreover, it is a cost-effective way to reduce fossil fuels and coal consumption.