Take the tube
October 1st 2007 Viessmann says that vacuum
tubes are more efficient in
harvesting and transferring solar
energy. For example if an
installation calls for 5m2 of flat
panels, 3m2 of tube will give the
same heat collection. This also
means that tubes take up less
roof space. Not every roof is
perfectly aligned for catching the
most sunlight. With tubes the
collector within the tube can be
individually tuned to the best
position to compensate for the
alignment of the roof.
Panels are heavy and even a
small one may require scaffolding
and lifting gear to get it safely
positioned on the roof. Tubes can
be taken, if necessary one at a
time, and simply plugged into the
header manifold. More articles from Viessmann Limited: | 
