Orifice meter with an orifice diameter of 25 cm is used to
measure the flow rate of water at 25°C in a 70 cm diameter
pipeline. If the water flow rate is 500 L/s, determine the
following:
a) Pressure difference indicated by the pressure gauge
for this flow rate (in kPa).
b) The head loss of the orifice meter (in m)
c) If a manometer is connected to the orifice and
measures 40 cm of mercury height, what is the
flow rate (in L/s) in the pipe.
70 cm
25 cm
ΔΡ
Fig: 1