THE ENERGIES -Alice Zei -Lorenzo Santini -Paolo Urti -Guido Pasquinucci -Chiara Innocenti

THE ENERGY The energy in physics is defined as the ability to do work. When we produce energy, a part of the final product is heat, that can't be reused as source of energy.

Forms of energy Electric Energy Chemical Energy Solar Energy Thermic Energy Potential Energy Kinetic Energy Nuclear Energy

EVERYTHING IN OUR LIFE IS AN ENERGY CONVERTION PROCESS

THE WASTE OF ENERGY IS A PHYSICAL LAW!

PRIMARY POWER SOURCE Biomasses 10,0 % Hydroelectric 2,2% Nuclear 6,3% Natural gas 20,7% Oil 30,5% Coal 25,3 % New renewable 0,5 %

RENEWABLE ENERGIES: Hydroelettric Energy from water Solar Energy from sun Wind Energy from wind Sea Energy from sea Geothermal Energy from earth

NUCLEAR ENERGY

ADVANTAGES: DISADVANTAGES : No CO2 pollution Not storable Alternative source to fossil fuelsOnly electric energy (22% of european energy consumption) Not renewable Radioactive scories Risk of disasters Legal and illegal production of nuclear weapons

The world should adopt production facilities as described in the following table: FACILITY TYPE QUANTITY Wind turbines3,8 million Solar power plants PV solar power plants Solar panel for private1,7 billion Geothermal power plants5350 Hydroelectric power plants270 Wave power generation system Tidal motrices M.A.Delucchi, M.Z.Jacobson providing all global energy with wind, water and solar power. Energy policies

WIND ENERGY DISADVANTAGES: -ADVANTAGES: Based on weather - Clean energy Wind turbines have big size - Renewable energy

HYDROELECTRIC ENERGY It uses gravitational potential energy tranformation into kinetic energy possessed by water masses at high altitude.

BENEFITS: The costs of electricity production are among the lowest Idroelectic basins are the ideal way to store energy in times of need DISADVANTAGES: Dam construction has serious consequences on people and environment Hydroelectric basins in tropical areas can become large producers of “serra” gases

SOLAR ENERGY It's a primary source on earth, that makes life possible The quantity of solar energy that arrives at us is enormous but too little concentrate

How to collect solar energy: Concentrating solar panel Thermic solar panel Photovoltaic panel

ECOLOGICAL FOOTPRINT

ENERGY SAVINGS TO SAVE ENERGY!!