29-08-2014, 03:29 PM
Renewable
Energy Sourses
Renewable.pptx (Size: 981.68 KB / Downloads: 24)
Introduction
Basically the energy sources are two types; they are conventional energy sources like coal, petroleum, natural gas etc. & non-conventional or Renewable energy sources like solar cells, fuel cells, thermo-electric generator, solar power generation, wind power etc
Renewable energy resources
Renewable energy is derived from natural processes that are replenished constantly. In its various forms, it derives directly from the sun, wind, ocean , biomass or from heat generated deep within the earth.
Solar energy
Solar energy is the most readily available source of energy can be used in our day to day life . Solar devices used for: cooking/Heating, Drying/Timber seasoning, Distillation, Electricity/Power generation, Cooling, Refrigeration, Cold storage. It is also the most important of the non-conventional sources of energy because it is non-polluting and, therefore, helps in lessening the greenhouse effect.
Wind energy
The utilization of wind turbines can be a great way to harness the energy of the wind in a bid to convert this into useable electricity.Areas where winds are stronger and more constant, such as offshore and high altitude sites, are preferred locations for wind farms.
The two main types of wind turbines are horizontal and vertical.
Advantages
1. Renewable energies are renewable, or almost infinite sources of energy that are not perishable.
2. It is clean energy, most renewable energies do not negatively effect the environment. (Nuclear energy perhaps being one major exception)
3. The more technology grows, the easier these energies will be able to be harnessed by the individual, perhaps saving lots of money on electric bills
4. Very low maintenance costs, which will make renewable energy affordable for the individual.
Disadvantages
You can’t always rely on a consistent source of energy. (Atmospheric conditions will effect efficiency of renewable sources of energy)
2. Limitations in current technology makes for high start-up costs which significantly reduces the amount of people switching to more renewable sources.
3. Each individual renewable energy source will have its own limitations. (Could be geographical, or atmospheric )
4. . Technology also limits efficiency of energy. This should be solved with greater research and understanding of the world around us.