Glow-worm Clearly Solar Horizontal In-Roof Collector - Manual (Page 7)

7
2 Technical Data
Appliance designation Unit. Clearly Solar
Absorber type Serpentine
Gross area m 2 2.51
Aperture surface area m 2 2.35
Absorber surface area m 2 2.33
Absorber Aluminium (vacuum coated) 0.5 x 1178 x 1978
Dimensions (L x W x H) mm 1233 x 2033 x 80
Weight (Dry) kg 38
Fluid content l 2.16
Copper pipe connection, flat-face Ø mm G 3/4" (DN16)
Insulation thickness mm 40
Max. operating pressure bar 10
Glass type Solar safety glass (prismatic structure)
Glass covering mm 3.2 (thickness) x 2033 x 1233
Coating High selective (blue) α = 95% ε = 5%
Solar safety glass transmission t (dew) % t = 91
Absorber emission ε (epsilon) % 5 ± 2
Back wall insulation mm, W/mk, kg/m 95 ± 2
Stagnation temperature °C 210
Efficiency η
0
% 80
Heat capacity Ws/ (m•K) 5014
Efficiency coefficient k1 W/(m 2 •K) 3.7
Efficiency coefficient k2 W/(m 2 •K2) 0,012
80
2033
1178
1233
1978
79
79
1075
14921
Diagram 2.1 Horizontal Collector