Urgent Need for Renewable Energy

Topics: Fossil fuel, Renewable energy, Greenhouse gas Pages: 8 (2572 words) Published: November 30, 2012
Urgent need for renewable energy

In today’s world the most important thing human’s need is electricity. Without electricity most of the modern equipment would not work. Similarly fuel is needed to power transportation devices. Natural recourses such as coal, oil and natural gas are the basis for producing energy for all kinds of devices. Due to the extensive use of these resources they now face extinction. These resources are classified as non-renewable resources. In this report we will discuss different types of resources which can be used as a replacement for producing sustainable energy and also the effects on the environment by burning the carbon based resources. Renewable Energy

Renewable energy is energy which is derived from natural resources such as the sun, wind, tides, streams, rivers, biomass etc. Renewable energy is naturally replenished; it is sustainable energy and does not harm the environment. About 19% of the world’s electricity requirements are met by renewably energy. The different types of renewable energy are: Solar Energy

Solar energy is obtained from the sun. Sun is a source of light and heat for all living things. It provides energy for photosynthesis, the process of plants creating oxygen. Solar energy can be harnessed and converted to electricity by using solar panels. Sun is also directly or indirectly responsible for most forms of renewable energy requirements, for example – heat causes wind which intern causes tidal energy. Sunlight causes tree growth some of which contribute for biomass energy. Hydropower

Hydropower is obtained from the force of water flowing downstream. Water is continuously recycled by the environmental cycle of precipitation and evaporation. This cycle cause water to evaporate and fall back down to earth in the form of rain which makes the rivers flow. This water is also stored in dams which are used all around the world to generate electricity by turbines and generators. Also energy can be obtained from tides and ocean waves which can be harnessed to produce electricity. Biomass Energy

The most common source of biomass energy is wood. But other sources such as food crops, plants, agriculture and industrial waste, organic municipal components are also used around the world for producing energy. Biomass can also be converted to biofuel which can be used as an alternative to petrol and diesel to run vehicles and heavy machinery. Hydrogen

Hydrogen is one of the most common on our planet. However, it is mostly found in combinations with other element in nature. For example - water is two part hydrogen and one part oxygen. Hydrogen is a very good source of renewable energy however the technology needed to extract this element is still in its early stages. Currently the most common way of extracting hydrogen is steam hydrocarbons and reforming. Other methods include thermolysis and electrolysis. Geothermal Energy

The heat from the earth’s core produces steam and hot water which can be used generate electricity, or for other purposes like home heating and generating power in factories. Geothermal energy can be obtained by digging deep underground reservoirs.

Wind Energy
Wind energy is the conversion of the power of wind to electricity. Wind energy has been used for over thousands of years to operate mechanical process such as pumping water, grinding, milling etc. to harness wind energy wind farms are created onshore or offshore, wherever there is abundant of wind energy available by using wind turbines. A wind turbine is a machine which converts the wind’s kinetic energy into rotatory motion to by using generators to produce electricity. Wind energy is harnessed in many countries including India, Germany, Denmark and the United States.

Reasons for Using Renewable Energy Sources:
Using renewable energy saves the environment from the harmful effects of greenhouse gases released in the atmosphere due to burning of fossil fuels. There is abundant of...
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