Essay on "one step towards green and clean energy"
[Essay Should Be in English]
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Answer:
Green energy means renewable energy that is vast alternative for the use of fossil fuels such as petroleum. Other conventional method used to provide electricity is such as geothermal, biomass, ocean, solar, wind, hydro, hydrogen fuel cells and etc. Biomass energy is derived from the wastes and animal dung either by burning it or just leaving the wastes to lay off by itself to get biofuel or biogas. Ocean energy is gained from the sea and there are two types of them such as thermal energy and mechanical energy. Hydrogen must go through reformation process or electrolysis process to be able to use for the fuel cells to provide electricity. The objective of the project is to choose seven types of renewable energies and explain its applications and advantages in detail.
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1. Introduction
Green energy is sustainable energy, which means meeting the needs of the present without compromising the future[2]. These alternative energy sources are said to be not harmful to humans and environment and also arenon polluting energy sources. It basically reduces pollution and the impact on the environment that the existing energy source is causing now and in the past by conventional energy sources such as fossil fuel, coal and wood. These are non renewable energy sources, also known as the brown energy[1]. These sources are mainly used in the production of electricity, heating and fuel for boilers. They cause excessive amount of pollutants, such as carbon monoxide and nitrogen oxides, together with particles that could harm humans. These pollutants are the main contributors to the greenhouse gases that cause global warning. Brown energy are also types of sources that are typically reducing on our earth, which means it could not be re-produced to be used in future. The main aim for this study on green energy is to literate the reader on what is green energy and the importance of these energy to substitute our current conventional energy resources. These report is also to identify the main types of green energies available for the current technology practised in our world today with the history of energy development that brought to the practice of green energy.
2. Green Energy
Sources of green energy come from the nature itself, being free to be harvested. They are mainly derived from the sun (solar power), wind and water. Wind turbines have been used since old times to grind grains, where the term “windmill” is derived from. A more expensive source would come from nuclear and bioenergy (biofuel and biogas).
Nuclear power is also categorized in green energy as it does not produce greenhouse gases. Waste from nuclear power plants are problematic and dangerous to be handled as it takes hundreds to thousands of years to decay before reaching the level that is not harmful to humans, plants and the animals. But in order to completely wipe out the usage of fossil fuels to produce electricity, the number of nuclear plants has to be increased so that greenhouse gases emissions can be cut down massively.[3] Energy from sun, wind and water are continuous but inconsistent. Rainy days that could affect solar power production and droughts that would affect water levels in dams are the main drawbacks of these energy sources.
As renewable energy is sometimes inconsistent, excellent storage capacity is needed to store energy that are produced. It is usually windier in the night time, but the demand would be lesser. Nuclear plants generate so much power at a particular time that they cannot be used at once. So large battery banks are required in order to mesh with the electricity system and provide a consistent power supply
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is a valuable resource, which can be used to give energy to various industries. In a world where manufacturing plays an important role in the country, energy provides the ability for a system to function, without energy no industry can function.
is a well-known energy source in many countries such as the United States, China, Germany, and Spain, etc.
Green energy comes from a natural source such as sunlight, wind & geothermal heat. The earliest use of green Energy dates back to 2000 BC when coal mining was used by the Chinese. they would burn the coal as a source of heat and cooking.
Green energy is the energy that can be used in a big way without damaging the environment. it is environmentally friendly and empowers various systems while releasing little or no toxic substances into the atmosphere.
Green energy can also be defined as renewable energy that can be used for generation.
Green energy is considered Clean Energy due to the lack of negative impact on the environment. it is one of the alternative energy sources that has received special attention from the government and various National Organisation to keep the planet clean.
Green energy is also sometimes referred to as energy derived from the processing of waste materials in an effort to make the environment cleaner.
Such material pollutes and the environment by increasing the amount of waste and toxic substances on the surface of the earth.
Example of waste material used for energy production includes sewage, animal waste, municipal solid waste, industrial waste, etc.
Most of these waste materials are used to make biogas as green energy. By processing waste material and using them to provide energy and environment is made cleaner.
The need to move to green energy sources has attracted attention from many world leaders. Green energy is an ideal way to reduce the effect of global warming and create a clean and healthy environment.