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.





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