Evacuated Tubes
Apricus solar collectors use twin-glass evacuated tubes.
They are comprised of two glass tubes, fused together at
the top and bottom. The space between the two tubes is
evacuated to form a vacuum. The structure is therefore very
similar to a Thermos®
flask you may use to keep water hot. The outer layer of the
inner tubes is coated with a special selective layer which
absorbs sunlight very efficiently. The vacuum layer
insulates very well against heat loss providing excellent
performance even in cold weather.
To learn more about the different types of solar collectors
and evacuated tubes, please
click
here.
Apricus solar collectors have from 10 to 30 evacuated
tubes, with each tube 1.8m / 70" long and 58mm / 2.3" in
diameter. Each tube contains a long heat transfer fin and a
heat pipe. The fin acts to hold the heat pipe in place
against the inner wall of the tube, and also provides
additional heat transfer.
To learn more about heat
pipes, please
click here.
Click here
to view the Evacuated Tube FAQ page.