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Evacuated Tube Technology
A solar water heating system can be used as the primary source
for hot water and will include a back-up conventional system
to meet heavy or unusual hot water requirements throughout
the year. A solar water heating system will easily meet 100%
of the water heating needs in the summer months.
Throughout the day, solar control unit compares the temperatures
of the solar collectors and the solar storage tank. When there
is enough warmth in the collectors to heat the fluid in the
tank, the control unit signals the pump to circulate the fluid
to the collectors and gather heat. The sun-heated fluid then
circulates through the heat exchanger in the tank. From there,
the solar heated water feeds into the home’s hot water
system as required.
The solar collector consists of rows of parallel transparent
glass tubes, each containing an absorber and covered with
a selective coating. Sunlight enters the tube, strikes the
absorber, and heats the liquid flowing through the absorber.
These collectors are manufactured with a vacuum between the
tubes, which helps them achieve extremely high temperatures
(170-350 degrees F) even in the wintertime.
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