Qm = 60*φ*(π/4)(D2-d2)*N*P Qm = conveyance capability(m3/h) d = outer diameter of shaft(m) P = SCREW PITCH (m) < 0.5~1D> N = R.P.M (MIN) φ= repletion efficiency(15%~45%)
H=[(C*Qm*L)/270](HP)*1.3 L = total length(m) Qm = conveyance content(t/h) C = conveyance coefficient of conveyed material
kinds of conveyed material