centrifugal pump solved examples|centrifugal pumps free pdf books : online sales The solutions to the example problems below include answers rounded to a reasonable number of digits to avoid implying a greater level of accuracy than truly exists. High-speed centrifugal pump damages shear-sensitive fluids like slurries, foodstuffs, emulsions, etc. These pumps are suitable for shear-sensitive fluids like slurries, foodstuffs, emulsions, etc. Efficiency vs pressure: In case of optimal pressure range, its efficiency is high. However, it decreases at high and low pressures.
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The main parts of the Centrifugal Pump are: 01. Impeller. 10. Coupling. 02. Casing. 11. Bearing. 03. Backplate. 12. Delivery or discharge pipe. 04. Suction & Discharge Nozzles. 13. .
Centrifugal pumps are widely used in various industries for fluid transportation and are known for their efficiency and reliability. In this article, we will explore a centrifugal pump example to understand how these pumps work and how to calculate important parameters.
The document contains 5 solved problems related to centrifugal pumps. The problems cover topics like calculating head, power required, efficiency,
Example:
A centrifugal pump has an outlet diameter equal to two times the inner diameter and is running at 1200 rpm. The pump works against a total head of 75 m. We need to calculate the velocity of flow through the impeller.
Solution:
To calculate the velocity of flow through the impeller, we can use the formula:
\[ V = \frac{Q}{A} \]
Where:
- \( V \) = Velocity of flow (m/s)
- \( Q \) = Flow rate (m\(^3\)/s)
- \( A \) = Area of the impeller (m\(^2\))
First, we need to calculate the flow rate using the formula:
\[ Q = \frac{\pi \times D^2 \times N}{4 \times 60} \]
Where:
- \( D \) = Diameter of the impeller (m)
- \( N \) = Pump speed (rpm)
Given that the outlet diameter is two times the inner diameter, we can calculate the diameter of the impeller:
Inner diameter, \( D_i = D \)
Outlet diameter, \( D_o = 2D \)
Area of the impeller, \( A = \frac{\pi}{4} \times (D_o^2 - D_i^2) \)
Substitute the values and calculate the flow rate:
\[ Q = \frac{\pi \times (2D)^2 \times 1200}{4 \times 60} \]
Next, we calculate the area of the impeller:
\[ A = \frac{\pi}{4} \times ((2D)^2 - D^2) \]
Now, we can calculate the velocity of flow using the formula mentioned earlier.
Dimensionless performance curves for a typical centrifugal pump from data given in Fig. 14.9 Fig. (14.10)
When the water pump is directly connected to the motor or diesel engine, it must use the integral base and pay attention to the flat base. For units directly connected by coupling, the pump and drive shaft must be concentric .
centrifugal pump solved examples|centrifugal pumps free pdf books