Concept explainers
Interpretation: The initial height of the water in the reservoir is to be determined for the given power of the pump.
Concept introduction: Whenever there is a case of delivering some amount of fluid from one place to another by suction line to discharge line in a pump, Bernoulli’s equation for energy balance is to be applied which states that the sum of potential energy, kinetic energy and pressure energy is constant. The equation for the same is,
In the above formula, the notations used are,
P1 and P2 are the pressures at suction and discharge line respectively.
v1and v2 are the velocities at inlet and outlet of the pump respectively.
g is the acceleration due to gravity
Z1 and Z2 are the initial and final height of the water in the pump.
hf = Frictional losses in the pump
W = Amount of work done
The power delivered by the pump is given as,
Here, P is the power delivered by the pump
Q is the flow rate of the pump
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Unit Operations of Chemical Engineering
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