Question

A pump set-up is shown in the figure. When the pump is running at 1200 rpm, the torque on the shaft is measured by means of a dynamometer as 4.2 N.m. In this running condition, the flow rate is measured by means of an orificemeter as 0.006 m³/s. The mercury ($ ho_m = 13600$ kg/m³) manometer between the inlet and outlet flanges of the pump reads 0.5 m, as shown. Pipe diameters are 0.05 m. Determine a) the efficiency of the pump and b) the head loss due to pipe friction.

          A pump set-up is shown in the figure. When the pump is running at 1200 rpm, the torque on the shaft is measured by means of a dynamometer as 4.2 N.m. In this running condition, the flow rate is measured by means of an orificemeter as 0.006 m³/s. The mercury ($
ho_m = 13600$ kg/m³) manometer between the inlet and outlet flanges of the pump reads 0.5 m, as shown. Pipe diameters are 0.05 m. Determine a) the efficiency of the pump and b) the head loss due to pipe friction.

A pump set-up is shown in the figure. When the pump is running at 1200 rpm, the torque on the shaft is measured by means of a dynamometer as 4.2 N.m. In this running condition, the flow rate is measured by means of an orificemeter as 0.006 m³/s. The mercury (hom = 13600 kg/m³) manometer between the inlet and outlet flanges of the pump reads 0.5 m, as shown. Pipe diameters are 0.05 m. Determine a) the efficiency of the pump and b) the head loss due to pipe friction.

Added by Michael P.

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