Sustainability

Renewable energy sources

Is the energy derived from natural resources that are renewed or that can not be depleted.

And renewable energy sources, to differ materially from fossil fuels from petroleum and coal

And natural gas ..... ,

Since the residues do not contain gases and other pollutants as in the combustion of fuel

Fossil.

Is produced by wind, water and sun, and are used widely in the countries

Developed and some

Developing countries; but the means of producing electricity using renewable energy sources has become

Familiar in recent

And renewable sources of energy flows include natural phenomena

Such as sun, wind and geothermal

And the movement of the tides., Water and biomass

Each of these sources of unique characteristics that affect the

How and when to use them

A - water power

Hydropower comes from the energy of water flow or fall in the case of

Waterfalls (watersheds)

Where the waves arise as a result of the movement of wind and the sea do

And oceans, lakes,

It is the movement of these waves arise energy can be exploited, and converted to

Electrical energy,

Produces waves in the ordinary energy of between 10 to

100 kW per meter of

Beach areas in the middle distance from the equator

B - biomass energy

Is the energy derived from organic materials Kahrac plants and bones and remnants of

Animal waste and agricultural waste.

The plants used in the production of biomass energy can be a quick trees

Growth, or grain,

Or vegetable oil, or agricultural residues, and there are different methods to address the types of fuel

Biosphere, including:

Direct combustion:

It is used for cooking, heating and steam production is that this process has a thermal output

Little

Burning indirect:

For the production of coal (without oxygen).

Methods of fermentation:

To produce methane gas which is used in Kaltdfih housework, cooking and lighting.

Distillation.

And gives each method of the previous methods has its own products such as methane

And alcohol and steam

And chemical fertilizers, and ethanol is one of the best types of fuel

Derived from biomass

C - Energy gas

The hydrogen gas at the top of the list of fuels that can be

Used after the exhausted traditional fuels, as it is one of the most

Gases and abundance in the universe, which represents the heart of the raw material of all the stars,

Despite the abundance in the heart of stars, and in fact the void between the galaxies, but

Earth's atmosphere are not available by the free hydrogen gas free.

Water is available in the seas and oceans, the main source

For this gas in a manner that the electrolysis of water, and can be obtained

The power required from solar energy.

The hydrogen gas used in electricity generation cell-mediated

Fuel, which does not cause any pollution to the environment, as it gives when burned

Water vapor, which is a natural component of the components of air

D - energy of the temperature difference in the depths of sea

It is the same idea and use of geothermal heating and generating

Electricity

Using warm water from the ocean floor and passing through several stages

Use of renewable energy in the field of civil

Commercial home use

A. Heating water for bathing, washing, cleaning, using

Solar collectors without converting to any other form of

Of energy. Which is cheaper and cleaner forms of energy at all.

B. The solar water heating using flat absorber

Of ready-made solar technology advanced economies, which may spread

Broadly in more than one use.

C. Solar water heating, is not a key item in the budget

The state.

2. Agricultural use

A. Drying of agricultural products.

B. Solar greenhouses.