An orifice meter is to be calibrated for the measurement of the flow rate of a stream of liquid acetone. The differential manometer fluid has a specific gravity of 1.10. The calibration is accomplished by connecting the orifice meter in series with a rotameter that has been previously calibrated for acetone, adjusting a valve to set the flow rate, and recording the flow rate (determined from the rotameter reading and rotameter calibration curve) and the differential manometer reading, h. The procedure is repeated for several valve settings to generate an orifice meter calibration curve of flow rate versus h. The following data are taken. Manometer Reading h(mm)- 0, 5, 10, 15, 20, 25, 30. Their respective Flow rates V(mL/s)- 0, 62, 87, 107, 123, 138, 151.
a) For each of the given readings, calculate the pressure drop across the orifice, delta P(mm Hg).
b) Suppose the orifice is mounted in a process line containing acetone and a reading h=23 mm is obtained. Determine the volumetric, mass, and molar flow rates of acetone in the line.