Solar panels
There are two types of solar panels that are used to collect
energy from the sun. The first are combinations of solar photovoltaic
modules which directly convert sunlight into electricity. Solar thermal
collectors are the second type. They use the sun’s energy to heat
water and other fluids.
The photovoltaic solar panels are installations of photovoltaic modules,
which in turn are interconnected assemblies of solar cells. These cells
are made up of silicon and typically require protection from the environment.
When sunlight hits the silicon it excites the electrons within it. The
electrons then flow through wires and create electricity. When the term
“solar panel” is used, this is generally the item being
describing.
Solar panels that are used for heating purposes are known as solar
thermal collectors. They come in low-, medium-, and high-temperature
varieties. The high-temperature versions are used in solar power plants.
The heat they gather is used to create steam from water. That steam
is then used to drive a turbine connected to a power generator.