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
heating 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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