Erasmus Romania october 2015 Solar panels and insulation To save energy, we have to realize a good roof insulation and to use solar and photovoltaic panels which produce green energy. Energetic saving To insulate a roof we can use different systems An airy roof with insulating boards An Airy Roof with Rockwool Insulated terraced roof Working steps The Insulation of a tiled roof Energia pulita, in abbondante quantit, prodotta in modo sostenibile e che comporta un risparmio energetico non indifferente. Un settore produttivo che in Italia fattura 35 miliardi di euro lanno, corrispondenti al 2% del PIL nazionale. A lot of clean energy is produced in a sustainable way and with a considerable energy saving. In Italy this productive sector invoices 25 billions euros every year that is the 2% of the national GDP Solar and photovoltaic panels Sketchy table of the radiation in Italy There are different types of solar and photovoltaic panels Solar panels The principle of working is the photovoltaic cell The photovoltaic cells can turn directly the solar radiation into electric power, using the so-called photovoltaic effect that is based on the property of some specially treated conductor materials (such as silicon, a very common element in nature); in addition they can generate electric energy when they are hit by solar energy. When exposed to the solar radiation, a photovoltaic cell produces current that depends on the intensity, on the temperature and on the surface of the solar radiation. What a photovoltaic system is and how it works A solar panel outline How a photovoltaic system works The fitting Tile shaped photovoltaic panels Flexible photovoltaic panels Types of photovoltaic cells: 1) mono-crystal cells, 2) multi-crystal cells, 3) amorphous cells Types of photovoltaic cells These panels are based on an easy principle (a termic effect) that is hot water is lighter than cold water, so it naturally rises and goes towards the tank easily, without the help of any pump. Termic Solar panels Termic solar panels to produce hot water The outline How it is made Working system of the solar panels Made by students class 4asa 5asa Translated by Alice and Giulia 3al
