Published August 12, 2008
by Elsevier Science .
Written in English
|The Physical Object|
|Number of Pages||256|
Publisher Summary Energy is converted in centrifugal pumps by hydrodynamic means. A one-dimensional representation of the complex flow patterns in the impeller allows the energy transfer in the impeller to be computed from the fluid flow momentum theorem with . The authors are practicing engineers with a wealth of experience in pump hydraulic and mechanical design, manufacture, installation, and troubleshooting. The book outlines significant contributions made to the pump technology industry worldwide and is a must for every pump Cited by: Since the first edition was published, the application of centrifugal pumps has been extended to new fields. Ranges of head per stage, total pressure, temperature, speed, and size have moved to new high levels/5. Centrifugal pumps can also be constructed in a manner that results in two distinct volutes, each receiving the liquid that is discharged from a o region of the impeller at any given time. centrifugal and positive displacement pumps. displacement pump.
Know and Understand Centrifugal Pumps 6. Reduce the losses (Hf) of the connections and fittings in the suction piping. For wheel actuation valves, maybe globe valves could be converted into gate valves. For quarter turn valves, butterfly valves could be replaced with ball Size: 7MB. maintenance, and troubleshooting of centrifugal pumps. The article has been written keeping in mind the level and interests of students and the beginners in operation. Any comments or queries are most welcome. Working Mechanism of a Centrifugal Pump A centrifugal pump is one of the simplest pieces of equipment in any process Size: KB. Centrifugal Pumps are " constant head machines " Note that the latter is not a constant pressure machine, since pressure is a function of head and density. The head is constant, even if the density (and therefore pressure) changes. The head of a pump can be expressed in metric units as: h = (p2 - p1) / (ρ g) + v22 / (2 g) (1). Centrifugal Pumps. The structure of a hydraulic machine, as a centrifugal pump, is evolved principally to satisfy the requirements of the fluid flow.
The centrifugal pump is the most common piece of rotating equipment in the refining and petrochemical industry, accounting for a large percentage of total operational and maintenance costs. This book thoroughly covers all the practical aspects of pump operation and maintenance. It is filled with practical advice on troubleshooting, maintenance Cited by: This book gives an unparalleled, up-to-date, in-depth treatment of all kinds of flow phenomena encountered in centrifugal pumps including the complex interactions of fluid flow with vibrations and wear of materials. The scope includes all aspects of hydraulic design, 3D-flow phenomena and partload operation, cavitation, numerical flow. Pumps operate by two basic principles: rotodynamic and positive displacement, but there are a few pump designs outside this categorization. Most pumps are driven by standard AC squirrel-cage motors. It may be advantageous to consider a steam or gas turbine for fast pumps. New motor designs, like switched reluctance. the effect on the pump charact~ristics of very fine particles ~nsion,such as colloids, is of a different nature than that of a true suspension. the power input to a centrifugal pump varies directlY-with the apparent specific gravity of the suspension being pumped. (f) \ the capacity for maximum efficiency ofa centrifugal pump.