Solar Water Heating
Converting
your main water heating system to solar energy is not a very
difficult task. Solar water heating systems are
widely available, easy to install and operate. It will adapt to
your water taps without difficulty.Solar water heaters can be more
costly to purchase and set up than traditional water heaters.
However, by using a solar system to heat your water you will
definitely save on your utility bills over time. Savings of 50% to
80% are realistic.
Quite a few ways for heating water using solar energy exist.
Making your own solar water heater is also possible. What ever the
solution you choose, you should keep in mind that you also need an
electric or gas backup water heater for days when there is no
sunshine.
A solar
collector and a storage tank are the heart of the system. Both
are located outside in order to receive maximum sunlight
during the day
The operating system is straightforward, cold water runs through a
circuitry of pipes built in a solar collector. When water inside
the pipes becomes hot it flows into a storage tank. At this stage,
hot water is ready to be distributed to the pipe network inside the
house.
The most common type of solar collector for heating water is the
glazed flat-plate collector. It looks like a rectangular flat box
covered with a glass top. Inside this box resides a flat black
plate called absorber. The role of the flat absorber is to
transform the light coming from the sun to heat. Once the flat
absorber is hot, water flowing through the tubes becomes hot. The
hot water obtained is stored into a well insulated storage tank
that will keep it warm and ready to use.
There are two
types of solar water heating systems: Active and passive. Active
solar heating relies on electrical and mechanical devices like
pumps, to push the water inside the tubes and to the storage
tank. On passive solar systems, the installation angle of the flat
plate collector and the storage tank is critical because only
gravity makes the water circulates from a side to another. As a
result, the water flow can be slow sometimes. Both systems are
efficient and at the end of the day, it is a matter of personal
choice.
Solar water heating is a simple and affordable solution. It can be
set-up quickly and the technology is mature enough to make you
decide to use it without any hesitation.. Heating water using solar
energy is a clever choice for your pocket and for the
environment.
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