A
solar water heater works by absorbing heat directly from the
sun rays and
then heating a fluid, like water. It can also generate
electricity when it has collected more than the maximum
temperature setting. Solar water heaters are one of the most
significant options for obtaining renewable energy and
reducing greenhouse emissions. The major components of a
solar water heater are a collector, a storage tank, and an
insulation layer.
During
the day, the solar water heater system can provide water at
a 65%-80% energy efficiency rate. However, The system will
need to heat the storage tank via either a gas booster or an
electric element booster to work at night or on cloudy
days.