Answer Posted / carl_ellis

Answer:
The flow rate at 50.0"wc will be 141.4% of the flow rate at
25.5"wc.

Reason:
The design maximum flow rate at 25.0" is 100.0% flow rate.
Flow rate is the square root of the percentage of flow at a
given DP.
The flow rate at 25.0"w.c. DP is the square root of 1.00 (or
100%)

If the DP doubles from 25.0 to 50.0, then the DP increases
from 100% at 25.0"wc to 200% at 50.0"wc
The flow rate at 200% DP increases by 141.4% because the
square root of 2.00 (or 200%) is 1.414.

Carl Ellis
Measure First

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