Overview of benefits
The CRK collectors meet the requirements set for the Blue Angel certificate of environmental excellence according to RAL UZ 73
Efficient solar thermal collector design for space-conscious installations; Designed for solar thermal operation throughout different seasonal conditions; especially suitable for a combination of DHW heating and central heating backup
Certified by Solar Keymark
Durable: Direct-flow vacuum tube collector based on the thermos flask principle, designed to support thermal insulation within the collector system
Constant: The absorber coating is located within the vacuum tube and is designed to reduce exposure to environmental influences
Flexible: Modular layouts for different roof configurations
Statutory warranty: 5 years
CRK-12
Model type
CRK-12
General data
Connections (MS locking ring fitting)
mm
15
Installation angle
15° to 75°
Heat transfer medium
ANRO LS (undiluted)
Solar Keymark registration no.
011-7S321 R
Absorption (energy absorption)
%
> 93.5
Emissions
%
≤ 6
Optical efficiency *
%
64.2
Heat loss coefficient a1 *
W/(m2 K)
0.885
Heat loss coefficient a2 *
W/(m2 K2)
1E-3
Max. stagnation temperature
°C
272
Angle of incidence correction factor K * Iongitudinal / transversal
%
89 / 99
Effective thermal capacity
Coeff in kJ/ (m2 K)
8.416
Max. operating pressure
bar
10
Pressure drop (at 15 l/h x m² and 40°C)
mbar
5
Number of vacuum tubes per collector
Units
12
Glass tube diameter
mm
47 / 33 / 1.6
Gross surface area
m²
2.29
Aperture area
m²
2
Capacity
litres
1.74
Dimensions
Length
mm
1640
Width
mm
1390
Depth
mm
100
Weights
Weight (empty)
kg
32.7