The present set-up is designed to study characteristics of a given centrifugal pump. The centrifugal pump is coupled to a swinging frame type DC Motor which permits direct torque measurement with the help of a spring balance. A speed control arrangement facilitates the end user to operate the centrifugal pump at different speeds.
The present set-up is designed to study characteristics of a given centrifugal pump. The centrifugal pump is coupled to a swinging frame type DC Motor which permits direct torque measurement with the help of a spring balance. A speed control arrangement facilitates the end user to operate the centrifugal pump at different speeds. To calculate the input power to the motor, an energy meter is provided. A RPM Indicator with Proximity sensor indicates the RPM of Pump. Present set-up is self-contained water re-circulating unit, provided with a sump tank, centrifugal pump etc. Water is pumped by means of centrifugal pump and passing through the pipeline, it returns back to the sump which make the system re-circulating type. Flow of water is diverted either to measuring tank or sump tank with the means of a flow diverter, when needed. Control valves and Pressure gauges are fitted in suction and discharge line of the centrifugal pump to conduct the experiments on different head and flow. Flow rate of water is measured with the help of measuring tank with piezometer and stopwatch. The supplied set-up is complete in all respect. Only water supply and electricity supply is to be provided by the end user for running the set-up.
Experimentation/Learning Objectives
••To determine total head, overall efficiency and pump efficiency of the centrifugal pump. ••To plot Head vs Discharge, Pump efficiency vs Discharge.
Utilities Required
••Electricity supply: Single phase, 220V AC, 50 Hz, 5-15 Amp. combined socket with earth connection. Earth voltage should be less than 5 volts.
••Water Supply : Initial fill.
••Floor Drain.
••Floor Area: 2.0 m x 1.0 m.
Pump | Kirloskar Make, Capacity 1 HP. Speed 2800 RPM (max.), Head 12 m (max.) |
Medium Flow | Clear Water. |
Speed Control | Thyristor controlled. |
Drive | HP DC motor, Swinging Field Type. |
Sump Tank | Capacity 110 Ltrs. approx. |
Stop Watch | Electronic. |
Spring Balance | Dial type |
Pressure Gauge | Bourdon type. |
Sump Tank | Capacity 110 Ltrs. approx. |
Pressure Measurement | By Electronic Pressure Sensor. |
Measuring Tank | Capacity 70 Ltrs. approx. with Piezometer. |
RPM measurement | Digital RPM Indicator with Proximity sensor. |
MCB | For overload protection. Standard make On/Off Switch, Mains Indicator, etc. |