Formation of Cavitation
Explain the reason behind formation of the Cavitation in the Centrifugal Pump and not in the Displacement Pump?
Expert
Formation of the cavities or the bubbles is invoked by the flow separation, or non-uniform flow velocities, inside the pump casing. In the centrifugal pumps, eye of pump impeller is smaller in comparison to the flow area of pipe. This decrease in the flow area of pump causes the increase in flow rate. So the pressure drops occurred between pump suction and vanes of the impeller. Air bubbles or the cavities are formed due to the liquid vapour because of the increase in the temperature in impeller. This air bubbles are transmitted to the pump that forms the cavitation.
theories for the origin of petroleum, methods for detection of petroleum deposits, fractional distillation
A pump station has been designed to lift water out of a 6 metre deep pit (vented to atmosphere) via a centrifigual pump mounted at ground level. Liquid conditions 20OC Suction pipe work losses 2.0 metres NPSH safety factor 5.0 kPa Vapor pressure @ 20oC 0.25 metres (a) Calculat
Why free vibration takes place at MDOF system?
Out of Rubber/Steel/Wood, which have higher Poissons Ratio?
Out of Centrifugal Pump or the Reciprocating Pump, which pump is more efficient?
Cotter joint: These kinds of joints are employed to connect two rods that are under compressive or tensile stress. The ends of rods are in the way of a socket and shaft which fit altogether and the cotter is driven into a slot which is common to both
Maintenance: How frequently and easily the product is to be maintained must be specified. A photocopier shouldn't require a service call from a technician just to add toner. If the product is to be maintenance free, then costs may be increased due to
The value engineering method focuses on functional values, and aims to increase the difference between the cost and value of a product: by lowering cost and/or adding value. In many cases, the emphasis is simply on reducing costs, and the design effor
Question 1: Three generating units operating in parallel at 60 Hz have rating of 300, 500, and 600 MW and have speed-droop characteristics of 5, 4, and 3%, respectively. Due to a change in load, a
18,76,764
1944791 Asked
3,689
Active Tutors
1416283
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!