Photovoltaik - What is this?
- The easiest explanation:
Production of electricity through solar energy.
How does it work?
- Extremely thin layers of sillicon are placed over glass or foil. When the sunlight hits them, they produce pressure. The more sillicon layers there are over a certain area, the bigger the productivity of the area is. The area, on op of which the sillicon cells are placed, is called a solar panel.
How long the solar cells keep best performance?
- A study conducted by Frauenhoff Institut in Freiburg showed that panels which have been in exploitation for over 10 years, do not exibit drop in effectivity. After 20 years of exploitation the panels are still within the permissible limits of deviation from the norm (around 5%).
How much would cost the maintenancy?
- Around 1% of the total investment should be calculated.
Where can Photovoltaics be used?
- Photovoltaics have mainly two applications:
- Parallel to the net installations.
This is the most common use. The produced energy is directly transfered to the electrical network. An electricity measurement appliance must be installed separately.
- Independent from the net installations.
These types of installations are usually used in small village gardens, mountains, etc. The produced electrical current is directly used or transformed with the help of an inventor into 230V - AC electricity.