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Wind Energy
Wind energy is a form of solar energy, created by circulation pattern in the Earth's atmosphere that is driven by heat from the sun.As the air flows past the rotor of a wind turbine, the rotor spins and drives the shaft of an electric generator.People have made use of wind energy for thousands of years.The energy that the wind contains can either be used directly or it can be converted into that high-value, highly flexible and useful form of energy we call electricity.The advantage of this wind energy is that we can generate more electricity and the wind is totally free so it is cheap.If we generate more electricity, then we can use more and in fact, we can get electricity at very cheap rate.According to my knowledge, there are no disadvantages for this wind energy.Only one thing, the generator and rotors are expensive to generate electricity so individuals can't afford it; only electric companies like ComEd can afford.This electricity helps residential and industrial consumption in any part of world.
Geothermal Energy
The term geothermal comes from the Greek.Geo meaning earth and therine meaning heat thus geothermal energy is energy derived from the natural heat of the earth.Geothermal energy is usable for a wide range of temperatures from room temperature to well over 00F.There are lots of advantages of this energy and there are only few disadvantages.The energy that was produced from earth is same as other energy that was produced from other sources.
Cheap College Papers on Biology Environmental Science
Hydroelectricity
Hydroelectricity is in the same category as solar and wind power in that it is both natural and reusable.Hydroelectric power stations use fast moving water flow, which turns turbines to create electricity.Hydropower is used in both small countries as well as other nations.There are lots of advantages of using hydropower.It is clean and environmentally friendly, it is a renewable resource, it is very cost effective, the plant can provide jobs and help develop local industries, and the process produced a body of water which can benefits wildlife, such as fish and water fowl.There are also disadvantages.Here are few of them The cost of initially building a hydroelectric power plant is high, energy produced can vary from area to area, and power plant must have an ideal location, close to a water source.
Ocean Thermal Energy
Ocean Thermal Energy utilizes the temperature difference between the warm surface seawater and cold deep ocean water to generate electricity.The heated working fluid is used to turn a turbine to produce electricity.Cold deep seawater is used to condense the working fluid in a second heat exchanger prior to being recirculated to the first heat exchanger.
Wave Power
Ocean waves are a form of wind energy that is concentrated within surface seawater.Friction develops between air and water as wind blows across the water, and waves are produced as energy is transferred between these two elements.Taking the motion of the waves, and translating it into mechanical or electrical energy, generates energy from waves.There are two types of instruments that can generate electricity from wave energy floaters and sitters.Floaters design can extract approximately 0% of the energy from the wave.I am not sure about advantage and disadvantage of this wave power.
Biomass
Biomass is organic material, which has stored sunlight in the form of chemical energy.Biomass fuels include wood, wood waste, straw, manure, sugar cane, and many others by products from a variety of agricultural processes.When burned, the chemical energy is released as heat.In fact, biomass continues to be a major source of energy in much of the developing world.The real environmental benefit of biomass will come when we can use large amounts of biomass to generate electricity, thereby reducing consumption of fossil fuels.
Solar Water Heating
The shallow water of a lake is usually warmer than the deep water and that's because the sunlight can heat the lake bottom in the shallow area, which in turn, heats the water.Most solar water heating systems for building have two main parts a solar collector and a storage tank.A solar collector is mounted on the roof.As heat builds up in the collector, it heats the fluid passing through the tubes.Solar water heating system can be either active or passive.Active systems rely on pumps to move the liquid between the collector and the storage tank, while passive systems rely on gravity and the tendency for water to naturally circulate as it is heated.The unit is expensive, but you can save much in electric or gas.
Solar Energy
San Francisco is on its way to becoming one of the biggest users of solar energy in the country.These people save lots of money on their utilities bill because most of their energy comes from solar system.This solar system produced electricity and this will help lower light bills.
Biogas
Biogas means social benefits for women and children who have a biogas plant installed to provide energy for cooking and lighting.The advantage of biogas is to provide electricity.In rural areas, where there is generally no electricity supply, the introduction of biogas has given people a sense of self-worth and time to engage in more activities outside the home.Dung is no longer stored in the home, but it is fed directly into the biogas plant, along with toilet waste.
Wood Burning
Wood was original heating fuel.Wood burning continues to be an effective and economical way to heat your home as a primary heating source or as a secondary heating source to complement conventional oil or gas furnace, or electric baseboards.People can use woods and they can cut their gas bills in half because they have fireplace in their house.
Work Cited
1.Wind Energyhttp//www.awea.gov
.Geothermal Energy http//geothermal.id.doe.gov/what-is.shtml
.Hydroelectricity http//alumni.imsa.edu/~eirias/hydro.html
4.Ocean Thermal Energy http//acre.murdoch.edu.au/ago/ocean/ocean.html
5.Wave Power http//www.doc.mmu.ac.uk/aric/eae/Sustainability/Older/Print/Wave_Power.html
6.Biomass http//www.eia.doe.gov/kids/renewable/biomass.html
7.Solar Water Heating http//www.txses.org/epsea/wtr.html
8.Solar Energy http//www.solartoday.org/00/july_aug0/San_Francisco.htm
.Biogas http//www.ecouncil.ac.cr/rio/focus/report/english/inforse.htm
10.Wood Burning http//www.eia.doe.gov/kids/renewable/woodburning.html
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