35
EN
2.5
Solar heating collector
2.5.1
Structure
7
2
4
6
7
3
5
1
1
External profile
2
Thermal insulation
3
Copper pipes
4
Sun-Selective absorbe
5
Special silicone rubber seals
6
Tempered solar
7
Alluminium profile
Fig. 5
POS. COMPONENT
DESCRIPTION
1
External one piece aluminium
profile
trough of high aesthetics. Robust construction for perfect tightness
2
High density, eco-friendly
thermal insulation
achieved with Back 40mm thick layer and side 18mm thicklay-er of prepressed rockwool.
Back rockwool insulation thermal conductivity
λ=0,035 W/m K (DIN 56612, measured at 10°C)
Side rockwool insulation thermal conductivity
λ=0,034 W/m K (DIN 56612, measured at 10°C)
3
Water frame of copper pipes
of suitable gauge and thickness (headers: Ø22, manifolds: Ø8)
(tube pitch) = 105mm (EN 1652).
4
Sun-Selective complete area
absorber
made of selective aluminium sheet with a special titan coating formed in vacuum,of high absorbency and low
radiation, covers the complete window area as well as the headers, thus increasing the collector’s absorben-
cy, Laser Welded to the water frame.
5
Special silicone rubber seals
allow fluctuation of the absorber’s length (contraction - expansion) in a -40°C to +200°C temperature range.
6
Tempered solar glass low iron with a stable coefficient of expansion and high light transmittance,
can withstand adverse weather conditions (e.g. hail storm, extreme temperature changes, etc.).
7
Alluminium profile
for solar glass seating and supporting.
Normal absorber design with louvers
Air turbulence increases heat loss
Complete area technology
The uniform area prevents heat loss
Fig. 6
