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Alternative Power Sources.

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Introduction

Alternative Power Sources Essay

The problem with fossil fuels is that they can not be used again this makes them nonrenewable they also use the earth’s valuable resources and are destroying the ozone layer. The factories where they are made take up a lot of land space, they also look dirty and produce a lot of pollution this destroys the wildlife around them. There are other much cleaner ways to get power you don’t just have to use fossil fuels this essay will explore these alternative ways.

Wave power or tidal power

This is made from a force taking the energy from a waves horizontal velocity and the energy stored in the peaks of a wave which is then converted into useful power forms. The wave’s energy comes from the sun. The sun’s rays are absorbs by the earth’s surface, and cause heating of the adjacent air, which then rises the rising of warm air and the cooler air replacing it generates winds. These winds travel across the sea, which causes friction between the air and the sea this, disturbs the surface of the sea and produces the waves.

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Middle

Solar Energy

Is produced in the sun as a result of nuclear fusion reactions. It’s transmitted through space by electromagnetic radiation in quanta of energy called photons, which interact with the Earth’s atmosphere and surface. Passive solar systems capture and use solar energy without the aid of mechanical or electrical devices. Most buildings can be regarded as simple passive solar systems, taking advantage of direct gains of solar radiation through windows or skylights. As the solar radiation strikes floors, walls, and other objects within the room it is converted to heat. A good building design will use this to advantage so the house will remain warmer though out the winter and summer periods. The only commercial power stations in use to day are the solar Electric Generating systems located in California. These trap the sun’s energy into a tube containing heat transfer fluid the fluid is raised to very high temperatures to make superheated steam.

Hydro-Power

Hydro-power is made by the fall of water from a higher to a lower level. Hydro-power is extracted from waterwheels or hydraulic turbines and is a natural source. Hydro-power is available from any where, where there is a steady flow of water.

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Conclusion

The water then enters the turbines and leaves them through the tailrace. The power generators are mounted directly above the turbines on vertical shafts. The design of turbines depends on the available head of water, with Francis turbines used for high heads and propeller-turbines used for low heads. Canada gets about 60% of their power from hydroelectric power. The world gets about a quarter of its power from hydroelectric sources. The leading countries are Norway 99% and Brazil 96%. Hydropower accounts for about 85% of the renewable energy sources in Europe. By 2010 the amount of hydro power used is hoped to increase from 165 to 185 billion kWh per year.

The are some advantages of using Hydro power the first and most obvious is that its clean for the environment and is a renewable energy source. It also provides Jobs workers will need to build dams. The disadvantages are that in the hotter countries such as Kenya where there is not much rain it may be harder to use such a power supply that depends on water.

In conclusion there are many different energy sources instead of fossil fuels that are a lot cleaner as well. You may be asking why don’t we use more of them this is simply because fossil fuels are much easier to produce.

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