Centrifugal Pump Handbook, Third Edition by Sulzer Pumps

By Sulzer Pumps

This long-awaited re-creation is the full reference for engineers and architects engaged on pump layout and improvement or utilizing centrifugal pumps within the box. This authoritative advisor has been built with entry to the technical services of the prime centrifugal pump developer, Sulzer Pumps. as well as offering the main accomplished centrifugal pump conception and layout reference with particular fabric on cavitation, erosion, collection of fabrics, rotor vibration habit and forces performing on pumps, the instruction manual additionally covers key pumping functions issues and operational concerns, together with working functionality in numerous different types of circuitry, drives and attractiveness testing.

  • Enables readers to appreciate, specify and utilise centrifugal pumps extra successfully, drawing at the industry-leading event of Sulzer Pumps, one of the world's major centrifugal pump developers.
  • Covers concept, layout and operation, with an emphasis on providing first class quality and potency strategies for top capital outlay pump plant users.
  • Updated to hide the newest layout and know-how advancements, together with purposes, try out and reliability techniques, cavitation, erosion, collection of fabrics, rotor vibration behaviour and operating functionality in a number of varieties of circuitry.
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Extra info for Centrifugal Pump Handbook, Third Edition

Example text

P0 depends only on the ratio H/h. 5 Influence of an unstable characteristic on the operating behavior of a pump under frequency variation This reasoning demonstrates that throttling control ought to be employed mainly on radial pumps with nq $40 (NSUSA 2000), because these have a flatter H-to-Q characteristic and are better suited for such control. With high specific speeds (nq > 100, NSUSA > 5000) this control is wasteful of energy because the power input to the pump rises when throttling is effected.

P0 depends only on the ratio H/h. 5 Influence of an unstable characteristic on the operating behavior of a pump under frequency variation This reasoning demonstrates that throttling control ought to be employed mainly on radial pumps with nq $40 (NSUSA 2000), because these have a flatter H-to-Q characteristic and are better suited for such control. With high specific speeds (nq > 100, NSUSA > 5000) this control is wasteful of energy because the power input to the pump rises when throttling is effected.

The setting of the pre-rotation guide imparts a circumferential component to the inflowing medium, thus altering the energy conversion process in the pump and with it the characteristic. 13 Characteristic of a mixed-flow pump with impeller blade adjustment The inlet guide can be used on any pump, but its effect on the characteristic increases with specific speed. Accordingly, inlet guides are employed chiefly with mixed-flow or axial-flow pumps. With prerotation control, efficiency drops much faster in the part load and overload ranges than with impeller blade control.

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