Centrifugal pumps are designed with different types of impellers depending on the fluid they are intended to pump. - Closed Impeller Has vanes enclosed between two shrouds. These are efficient for pumping clear water or liquids with low solid content because they create a well-defined flow path, minimizing recirculation losses. - Semi-closed Impeller Has vanes on one side and a shroud on the other. They offer a compromise between efficiency and ability to handle solids. - Open Impeller Has vanes attached to a central hub, with no shrouds. The vanes are exposed to the fluid. These are best suited for pumping fluids containing large solid particles, abrasive materials, or viscous liquids like mud, slurry, and sewage. The open design allows for larger passages, reducing the risk of clogging and wear.
Centrifugal pumps dealing with mud, slurry and sewage have - (5) Question not attempted
Asked in Assistant Eng. (Mechanical) Competitive Examination, 2023 · Topic: Mechanics (Fluid Statics and Dynamics (Continuity Equation, Bernoulli's Theorem))
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