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Propeller is external (outboard motor on a boat)
Impeller is internal (vehicle water pump).
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Explain the effect of cavitation on propeller blades?
The BLADES ON THE IMPELLER GATHER BUBBLES AND POP. THE POP OF THE BUBBLES BREAK AND INDENT THE IMPELLER AND GUIDEVANE THAT HELPS THE WATER OR FLUID GO FROM THE MIDDLE OF THE IMPELLER TO THE LEADING EDGE OF THE IMPELLER. THE SOUND OF CAVITATION IS LIKE PUMPING GRAVEL THROUGH THE VOLUTE OR CASE. IF THE PUMP IS CAVITATING YOU CAN SLOWING CLOSE A BALL VALVE ON THE DISCHARGE SIDE OF THE PUMP ON A CENTRIFUGAL PUMP AND THE GRAVEL NOISE WILL GO AWAY AND YOU KNOW THE PUMP IS CAVITATING. CAVATION WILL DESTROY AN IMPELLER VERY FAST BY IMPLODING BUBBLES ON THE METAL OR PLASTIC UNTILL THE PUMP WILL NOT RUN.
Why centrifugal pump cant work on air but centrifugal blower works?
it is due to the difference in the air intake and impeller construction.
In which part impeller use in a pump?
impeller use in a pump casing .
How do you build a propeller?
How do you build a propeller
Where does the liquid move the fastest in a centrifugal pump?
At the impeller tip where the linear velocity is highest as it farthest from the shaft center. In case of multiple impeller pump it is at the tip of the last impeller.
What is the difference between impeller and propeller vanes?
An impeller is a rotor inside a pump through which the liquid flows to create a pressure gradient.A propeller is used to propel a vessel.In pump impeller liquid moves i.e. pump is stationary. In a vessel propeller the vessel moves through a liquid or gas!@ please iwant to know the physical meaning of NPSHNet Positive Suction Head
Explain how energy hydroelectric is harnessed from flowing water?
Water is allowed to flow through an impeller. This drives the impeller around. A mechanical shaft from the impeller is connector to the rotor of a dynamo/alternator. Since the rotor (a coil of wires) is revolving inside a magnet , this generates electricity in the dynamo/alternator. The mechanical shaft is the same to a steam turbine in a thermal/nuclear power station, thereby the process is the same. NB An 'Impellor' is the same as a propeller , the difference being that an impeller rotates because of flowing water through it, whereas a propeller is rotated by mechanical mean to make the object flow through water.
What is the difference between axial fans and propeller fans?
Axial fans are divided into three groups: propeller, tubeaxial and vaneaxial. Hence, every propeller fan is an axial fan but the opposite is incorrect.
Where is the impeller on a sand pump?
An impeller in a pump is the part that the motor spins that actually does the work of moving the water. Due to it's design when it spins it creates a vacuum that pulls the water in the middle of an opening on the front of the impeller and throws it to the outside where it is then channeled to the output of the pump.
Difference between compressor and pump rotor?
The only one difference in b/w compressor and pump rotor is impeller shroud width.Fluid is incompressible so impeller shroud width is not change and gas is compressible so impellers are tends to thin in width to the discharge side.
Difference between positive and non-positive displacement pump?
A hydraulic pump that uses an impeller or propeller to move fluid by momentum, as opposed to a positive displacement pump, which moves discrete quantities of fluid with each rotation. A typical application of a non-positive displacement pump is the coolant pump, or water pump, on a radiator-cooled engine.Read more: What_is_a_non-positive_displacement_pump
What is the relationship between pump impeller diameter and pump horsepower?
The brake horsepower varies as a cube of the impeller diameter.
Relation between impeller width and its speed?
While designing an industrial blower, how can one assess as to what should be the size of the housing, Impeller and number of blades of an impeller. An answer will much appreciated.
What is the difference between volute centrifugal pump and turbine centrifugal pump?
voloute convord the pressure into volicity and the mixtur of propallere and impeller is called turbine pump
Explain the effect of cavitation on propeller blades?
The BLADES ON THE IMPELLER GATHER BUBBLES AND POP. THE POP OF THE BUBBLES BREAK AND INDENT THE IMPELLER AND GUIDEVANE THAT HELPS THE WATER OR FLUID GO FROM THE MIDDLE OF THE IMPELLER TO THE LEADING EDGE OF THE IMPELLER. THE SOUND OF CAVITATION IS LIKE PUMPING GRAVEL THROUGH THE VOLUTE OR CASE. IF THE PUMP IS CAVITATING YOU CAN SLOWING CLOSE A BALL VALVE ON THE DISCHARGE SIDE OF THE PUMP ON A CENTRIFUGAL PUMP AND THE GRAVEL NOISE WILL GO AWAY AND YOU KNOW THE PUMP IS CAVITATING. CAVATION WILL DESTROY AN IMPELLER VERY FAST BY IMPLODING BUBBLES ON THE METAL OR PLASTIC UNTILL THE PUMP WILL NOT RUN.
Axial load in impeller?
The load of Axial on an impeller or a rotor depends on various factors including suction force, the configuration of object, and variation of pressure difference in different stages.
How does a propeller work?
A propeller works by converting the rotation of the engine into horizontal thrust similar to a fan. The blades push the air backwards creating acceleration, and create a difference in pressure between the forward and rear surface adding to the movement. The above is, of course true for a boat propeller. For an airplane propeller Bernoulli's pincipal is involved. Bernoulli's principle states that the greater the speed of a fluid, the less the lateral pressure. So the propeller uses the same deal as the wing.
