ENERGYENERGY

Generation Generation TransformationTransformation

Energy Resources Energy Resources Renewable: they are naturally replenished on a human timescale such as sunlight, wind, rain, tides, waves, biomass and geothermal energy

Non Renewable: they don't renew themselves at a sufficient rate for sustainable economic extraction in meaningful human time-frames. The most important: fossil (coal, petroleum, and natural gas) fuels and nuclear generation.

Non Renewable Non Renewable Energy Resources Energy Resources

CoalCoal

It's a sedimentary rock composed primarily of carbon along with variable quantities of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen.

Coal has been used as an energy resource, primarily burned for the production of electricity and heat, and is also used for industrial purposes, such as refining metals.

Despite its environmental credentials, coal remains a crucial contributor to energy supply in many countries. Coal is the most wide-spread fossil fuel around the world, and more than 75 countrieshave coal deposits.Large developing economies, primarily in Asia, are powered by coal and have significant coal reserves.

Coal in Coal in imagesimages

Natural GasNatural GasIt is found in deep underground rock formations or associated with other hydrocarbon reservoirs in coal beds. Petroleum is another resource found in proximity to and with it.

Natural gas is another fossil fuel resource often used for heating, cooking, and electricity generation.It is also used as fuel for vehicles and as a chemical feedstock in the manufacture of plastics.

The cleanest of all fossil-based fuels, natural gas is plentiful and flexible. It is increasingly used in the most efficient power generation technologies, such as, Combined Cycle Gas Turbine with efficiencies of about 60%.The exploration, development and transport of gas usually requires significant upfront investment

Gas in imagesGas in images

UraniumUraniumIt is a silvery-white metallic chemical element in the actinide series of the periodic table,

It's weakly radioactive because all its isotopes are unstable. The most common isotopes: U-238, U-235

with symbol U and atomic number 92. Uranium is weakly radioactive -> all its isotopes are unstable.

Natural U - Enriched U - Natural U

The fission process often produces free neutrons and photons, and releases a very large amount of energy.

This makes possible a selfsustaining nuclear chain reaction that releases energy at a controlled rate ina nuclear reactor or at a very rapid uncontrolled rate in a nuclear weapon

Nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of a particle splits into smaller parts (lighter nuclei).

The nuclear industry has a relatively short history: the first nuclear reactor was build in 1954.

Total electricity production due to nuclear generation has been growing during the past twodecades although the three major nuclear accidents have slowed down or even reversed its growth in some countries.

Nuclear Nuclear in imagesin images

The worst The future