Solar Water Heating
Solar hot water systems use sunlight to heat water and then direct
that heated water either into a holding tank, or directly to the
homes hot water cylinder.
Interest in solar water heating systems in the past has been sparodic,
but with increasing electricity costs, and scarcity of conventional
fuels, solar heating technologies are enjoying renewed interest.
Solar powered hot water heating systems have improved dramatically
in recent years, both in terms of technology innovation, and also
in terms of design.
Sleek Design - Todays modern solar water heating
systems no longer have external tanks - this is either internally
housed, or with the right plumping, the solar water heating panels
can be connected directly into existing hot water cylinders.
Improved Performance - More innovative solar
water heating technology has resulted in more efficent systems,
both in terms of water heating capability, but also in terms of
ancillary power used to power any sun tracking options for the unit.
In many climates, a solar heating system can provide 50 to 75 percent
of domestic hot water use. The most common types of solar water
heaters are batch systems, flat plate collectors and evacuated tube
Reduced Maintainence - well designed solar water
collectors are virtually maintenance free. They are kept clean by
natures rain, and new automatic system controllers prevent them
from freezing, with many models now usable in climates as low as
minus 50 degrees Celcius.
Solar water heating technologies are more efficient than many other
solar technologies. Much of a units performance depends upon the
site of deployement, and ambient temperatures.
Flat-plate and evacuated-tube collectors have efficiency ratings
above 60 percent during normal operating conditions.
Solar water heating systems are appropriate for domestic hot water,
swimming pools, and commercial locations.
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