27
5 Dimensions and technical data
1
1
0
1
0
3
2
1
1
6
0
1930
Flat-plate collector
Unit
OKF - CK 22
Gross surface area
m
2
2.25
Outer dimensions (L x W x H)
mm
1933 x 1163 x 110
Aperture surface area
m
2
2.02
Collector connection
–
G
1
⁄
2
M
Weight
kg
37
Absorption coefficient
␣
95 %
Emission coefficient
5 %
Transmission
τ
96 %
Collector tilt angle for roof integration
Degree
27-85
Permissible pressure/suction load
N/m
2
2250
Stagnation temperature at 1000 W/m² and 30°C
°C
ca. 208
Max. permissible working pressure
bar
10
Collector heat return
kWh/m
2
> 525
Heat exchanger content
l
1.3
Glass cover
–
3.2 mm solar safety glass
with antireflective coating
Solar sensor (inner diameter)
Ø
6 mm
Absorber
–
Absorber made of aluminium heat
conducting steel sheet and copper
pipe, laser welded