Centrifugal pump experiment
Centrifugal pump test rig experiment
Under these conditions, H is large but volume flow rate is zero. Between the two the pumps net head may increase from its shutoff value somewhat as the flow rate increases, but H must eventually decreased to zero as volume flow rate increases to its delivery value. The adjustable inlet and delivery valves allow students to create different operating conditions. Speed Control The speed control regulates the motor rpms. In normal operation, the speed is to be controlled using the speed controller and tachometer, flow is to be controlled using valve V-3, pressures are to be determined from the DP cell readings, torque is to be measured from the torque meter employing a strobe light, and flow is to be determined from the rotameter reading. Instrument and control modules fit into a frame above and behind the pump. A stroboscopic light is necessary for reading the meter and this stroboscope should also be used to check the indicated motor speed in rpms. A pressure transducer on the Centrifugal Pump Module measures the turbine inlet pressure. In operating the equipment, it is necessary that the intake from the reservoir should be at least 6 inches above the intake. For the pump used in the present experiment, the following assumptions are made. Rotating components 1. This equation neglects all shearing stresses. Theory A pump is a device for supplying energy to a fluid. If not, correction or service are needed Reservoir was filled to at least 6 inches above the intake to the pump. Discussion Even though I personally prepare this lab report, I would like to elaborate it for better understanding of both party.
The water travels up through a valve and filter, through an inlet valve to the pump body, then out through a delivery valve. Electronic pressure transducers measure the pump inlet and delivery pressures and the Venturi differential pressure flow rate.
Flow Control The valve V-3 controls the flow. The effect of supplying energy can be studied via the mechanical energy equation. Note: all nomenclature is defined at the end of the section.
Do not make any changes in the existing connections. The adjustable inlet and delivery valves allow students to create different operating conditions. The equipment can use both analogue and digital instrumentation at the same time, enabling students to compare the different pressure measurement methods.
The increase in area of flow decreases the velocity of flow and increases the pressure of water.
Since friction is always present in mechanical devices, the energy supplied goes partly into friction and the rest to one of the other effects cited. Stationary components of the centrifugal pump are the following: a Casing: — It is an air tight passage surrounding the impeller.
Centrifugal pumps are commonly used to move liquids through a piping system.
Theory A pump is a device for supplying energy to a fluid.
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