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 gas20,7%

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 fuels

Only electric energy(22% of european energy consumption)Not renewableRadioactive scoriesRisk of disastersLegal and illegal production of nuclear weapons

The world should adopt production facilities as described in the following table:

FACILITY TYPE QUANTITYWind turbines 3,8 million

Solar power plants 49 000

PV solar power plants 40 000

Solar panel for private 1,7 billion

Geothermal power plants 5350

Hydroelectric power plants 270

Wave power generation system

720 000

Tidal motrices 490 000

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!!