Non conventional energy sources (GEO THERMAL, SOLAR, WIND)

PRESENTED BY

M. Shivani Reddy

INTRODUCTION

Energy sources

→Conventional

→Non conventionalGeo thermal energySolar energyWind energy

Conclusion

ENERGY SOURCES

Energy sources can be defined as sources which provide a net supply of energy. There are 2 types of energy sources conventional energy sources non conventional energy sources.

CONVENTIONAL ENERGY SOURCES

These sources of energy are non renewable.

Example Fossil fuels, Nuclear elements, etc

Conventional sources of energy have a limited supply.

In addition, burning fossil fuels release significant

amounts of greenhouse gases and contribute to acid rain.

NON CONVENTIONAL ENERGY SOURCES

These sources are renewable.

These are still undergoing development.

And are also expensive.

They include Geo thermal power, solar power and

wind power.

These sources are eco friendly.

TYPES OF NON CONVENTIONAL ENERGY SOURCES

Geothermal Energy

Solar Energy

Wind Energy

Biomass energy

Tidal Energy

Etc…

Different types of non conventional energy sources are

Different types of non conventional energy sources are

explained as follows.

Geothermal power is energy derived from heat that comes out of the earth.

Hot rocks underground heat, water to produce steam. We drill holes down to the hot region steam comes up is purified and

used to drive turbines which drive electric generators.

TEN-YEAR UNAVAILABILITYTEN-YEAR UNAVAILABILITY

The Advantages of Geothermal Energy

There are no by products which are harmful to the environment.There is also no consumption of any type of fossil fuels. Another advantage is that the power plants do not have to be huge.

The Disadvantages of Geothermal Energy

The area where a geothermal energy power plant would be built should consist of those suitable hot rocks at just the right depth for drilling.

It is important to take care of a geothermal site because if the holes were drilled improperly, then potentially harmful minerals and gas could escape from under ground.

Pollution may occur due to improper drilling at geothermal stations.

SOLAR POWER:

Solar power is power derived from the light and heat of the sun.

One way of capturing this energy is through the use of photovoltaic cells.

A solar cell or photovoltaic cell (PV), is a device that converts light into electric current using the photoelectric effect.

Solar energy is collected by the small solar panels .And it is converted to the electricity.The Solar electricity is usually collected in a storage battery.

ADVANTAGES:

If we consider solar energy over that of oil, Solar cells are totally silent. lack of pollution given off by solar panels when generating electricity.

Solar power bring electricity to some of the most remote places on earth also.

DISADVANTAGES:

The initial cost is high.

Solar power cannot be created at night.

WIND POWER:

Wind has kinetic energy that can turn turbines and be converted to usable power. Wind power is one of the most cost-efficient forms of non-conventional energy.

Wind power is captured by wind turbines.

Wind can be used to spin turbines that add fuel to batteries.

Some countries like India, Germany and China are lucky to have rather consistent prevailing winds, which makes the possibility to utilize wind power on a large

scale much more feasible than it is for other countries.

ADVANTAGES:

Wind energy is friendly to the surrounding environment, as no fossil fuels are burnt to generate electricity from wind energy.

Wind turbines take up less space than the average power station.

Another advantage of wind energy is that when combined with solar electricity, this to provide a steady, reliable supply of electricity.

Disadvantages:

In many areas, the winds strength is too low to support a wind turbine or wind farm.

The noise pollution from commercial wind turbines is sometimes similar to a small jet engine

In addition to these there is another energy called bio mass energy which involves burning of plants and other organic material .Due to combustion carbon dioxide is released which in turn results in green house effect .But however all the above stated powers play a very important role in determining the economic growth of a country.