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Buderus commercial and domestic boilers

[SKS-4.0 Range Technical Data Table]

High performance flat-plate collector SKS-4.0s
SKS-4.0w
Type of installation portrait landscape
Collector area m2 2.37 2.37
Net absorber area m2 2.1 2.1
Absorber contents | 1.43 1.76
Selectivity Level of absorption % 95±2 95±2

Level of emissions % 5±2 5±2
Dimensions (h/w/d) mm 2070/1145/90 1145/2070/90
Weight kg 46 47
Efficiency % 85.1 85.1
Effective heat transfer coefficient k1 W/(m2 · K) 4.0360 4.0360

k2 W/(m2 · K2) 0.0108 0.0108
Stagnation temperature ºC 204 204
Max. operating pressure (test pressure) bar 10 10
Max. operating temperature ºC 120 120
Annual collector yield kWh/m2 525 525
Solar kite mark granted Yes
Yes
 
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