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Who is Solar Direct?
The
team at Solar Direct designs and supplies state-of-the-art solar
water heating systems that deliver major energy savings,
resulting in substantially lower water heating costs and major
cuts in green house emissions.
What
are the Key Benefits of our
System?
Some of the many benefits our Solar solutions deliver include:
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Up to 80% of your water heating needs sourced directly from
the Sun Solar Rays.
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Up to 60% more efficient in frost prone areas.
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A
proven Solar technology - widely used throughout the world.
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High quality Solar products backed by generous warranties.
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Amongst the lowest greenhouse emissions of any system in the
market.
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At Solar Direct you the Solar System pay for itself in 2-3
years.
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Easier to install - a range of frames exist to suit
installation on all roof types and pitches.
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Maintenance free.
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Naturally frost protected - perfect for cold climates.
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Can be retro-fitted to existing electric or natural gas
storage geysers.
How the Evacuated Tube Works?
Vacuum tube
Evacuated tubes are the absorber of the solar water
heater. They absorb solar energy converting it into heat for use
in water heating. Each evacuated tube consists of two glass
tubes made from extremely strong borosilicate glass. The outer
tube is transparent allowing light rays to pass through with
minimal reflection. The inner tube is coated with a special
selective coating (Al-N/Al) which features excellent solar
radiation absorption and minimal reflection properties. The top
of the two tubes are fused together and the air contained in the
space between the two layers of glass is pumped out while
exposing the tube to high temperatures. This "evacuation" of the
gasses forms a vacuum, which is an important factor in the
performance of the evacuated tubes. The vacuum in the evacuated
glass tube is less than 5×10-3pa This can only be reached and
maintained over a long period of time through a specialised
evacuation process in production resulting in an almost total
elimination of convection and conduction losses from the tube.
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