Wednesday, February 20

All About Green Energy

Humans are being dependent on the use of fossil fuels over the years. It all started during the industrial revolution, where most of their activities require the use of fossil fuel. Today, fossil fuel usage has dramatically increased and for the years to come. A study that’s conducted in 2016 shows that 81.3% of the total US energy consumption comes from three kinds of fossil fuels: petroleum, natural gas, and coal.

Fossil fuel comes from the remains of plants and animals that lived millions of years ago. If all of these are used up, then we have to wait another millions of years to get fossil fuel again. However, the use of fossil fuel can hurt the environment. Burning them can produce dangerous gases such as nitrous oxide and Sulphur dioxide which can lead to serious health conditions. With that being said, it’s time to use green/renewable energy for a change.

Green Energy

  • Green energy is a type of energy that came from renewable sources like sunlight, wind, water, vegetative matter, and the heat from the earth. These sources do little to no damage to our health and also to the environment which makes it ideal compared to fossil fuel.

Example of Green Energy Sources

  • Solar – It is the use of energy from the sun. This energy is converted into electricity once the sunlight hits the solar panels. These solar panels can also store extra electricity to be used during night time or cloudy days. Solar panels can be quite expensive though, and you need to have a huge portion of land for its operation. But despite of these, solar panels are gaining popularity everywhere in the world because of it being the cleanest, noiseless, and most abundant source of energy.
  • Wind

  • – Wind energy is collected by the use of turbines through wind movement which converts kinetic energy to mechanical energy. These turbines are connected to power grids, which brings energy to distribution lines to provide electricity to consumers. The use of turbines can have its disadvantages though. It’s noisy and can be dangerous to birds that might be flying near it. However, it uses no water, doesn’t require huge lands to operate, and also cost less compared to solar panels.
  • Geothermal

  • – Now that we’re done with air and heat from the sun, it’s time to talk about geothermal energy. Geothermal energy comes from the heat inside the earth that are residing in rocks, fluids, and its crust. In order to use geothermal energy as electricity, a geothermal power plant is needed. These power plants will tap energy from different sources such as stored steam and hot water that are unable to reach the surface of the earth. Once tapped, these energy sources will be delivered to turbines that link to power generators. Building geothermal power plants can be costly, but every money spent is worth it because of its ready availability and abundance. It also doesn’t require too much space in order to operate, and they are compatible to different environmental types.
  • Hydroelectric

  • – This type of energy can be achieved by converting kinetic energy of flowing water into mechanical energy through the use of hydraulic turbines. After that, the mechanical energy is then converted into electricity by a generator that’s connected to the turbines. The water that we’re talking about in this type of energy came from waterfalls and rivers which is then stored in dams that create man-made lakes and tunnels that lead to turbines. Hydraulic power plants can be easily controlled, and the man-made lakes that are formed from dams can be used for different recreational activities and tourist attractions. However, dams can create a negative impact to fishes that are residing in the body of water where it’s built.
  • Biomass

  • – Biomass energy is created by burning vegetable matter and crops such as sugarcane and corn. The purpose of this is to release stored chemical energy from the sun into heat energy. It can also be converted into liquid biofuels which is ideal to use especially for transportation. Bio fuels works just like fossil fuels but only cleaner and better. The only disadvantage of it is that it uses a lot of crops in order to create it, which means crops should be divided for those to be used as fuel and those to be used for food.

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