Why does the pressure drop (n/m2) in pipe sizing appear excessive but velocities are acceptable?
The pressure drop at the outlet is included in the pressure drop for the connecting pipe. For example:5m pipe length, with 200n/m2 total pressure dropWC outlet with 1000n/m2 total pressure dropTotal pipe pressure drop = 1200n/m2Pressure drop pet meter = 240 n/m2
Duncan Brown