Answer / carl_ellis

design max flow rate = 20 mmcf
design max DP = 100 in H2O

new max flow rate = 25 mmcf
new max flow rate = ?

The max flow rate increases by 125% over the design max flow
rate:

25/20 = 125% increase

DP calculations are done in normalized percentages. 125% = 1.25

To calculate the corresponding DP at a max flow rate 125%
higher than the original, where X = DP

sq rt of X = 1.25 (square root of normalized percentage
of DP)

X = 1.25^2 = 1.562

1.562 = 156.2% (work in normalized percentage)

156.2% of 100 inH2O = 156.2 in H2O at a max flow rate of 25 mmcf

Carl Ellis
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