... 3,80 / 4,66Appeture Area (m²)2,52/3,36 / 4,20Surface dabsorbeur (m²)2,18/2,42 / 3, ... )39/47 / 65mini. flow (l/m)120typical flow (l/m)150max. flow (l/m)600stagenation temperature (°c)300EN 12975 (Solar ... )in courseDateOct-15Efficiency (n0 in %, k1 in W/m²K, k2in W/m²/K²) ;n0= 0.77, k1 = 1.47 ... , k2= 0.0051hail resistance=<25diameter of tube (mm)58Glass qualityBorosilicate3.3 (T ...