Aeration System - Piping System 1


Piping System

    1). Arrangement of air header pipe

    From blower to aeration tank, pipe length = 100 ft, D = 18 ", V= 3,300 fpM

    Distribution Header D = 18", Length = 62 ft

    Branch of Air Header d = 12", Length = 96 ft

    2). Total friction head loss from blower to last branch header

    Find hbranch/100 ft from Chart CFM-D-Temperature-Gauge Pressure-H(CFM-D-T-P-H chart)

    T F = 9/5 25C + 32 80 F

    Gauge pressure > 6.5 (depth)+ 0.1(Swig aerator) + 0.3(diffuser) 7 Psi

    Select gauge pressure of blower 8 Psi

    Branch Header:

    H12" = hbranch L = 0.28"/100 96 = 0.27"

    Division header, d = 16"

    For Q = 3,550 CFM

    H14" = 0.66" 0.31 = 0.20" (H2O)

    For Qair = 3 1,775 CFM = 5,325 CFM

    H14" = 0.65"/100 31 = 0.20" (H2O)

    Main Header , Q = 10,226,440/24 60 = 7,100 CFM

    H18" = 0.64"/100 100 = 0.64"

    Total head loss Ht = 0.64 + 0.20 + 0.20 + 0.27 = 1.31" 0.05 Psi

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