| Description |
1 online resource (xxxiv, 964 pages) : illustrations |
| Contents |
Preface -- Acknowledgements -- Hints for the reader -- Table of contents -- Symbols, abbreviations, definitions -- 1 Fluid dynamic principles -- 1.1 Flow in the absolute and relative reference frame -- 1.2 Conservation equations -- 1.2.1 Conservation of mass -- 1.2.2 Conservation of energy -- 1.2.3 Conservation of momentum -- 1.3 Boundary layers, boundary layer control -- 1.4 Flow on curved streamlines -- 1.4.1 Equilibrium of forces -- 1.4.2 Forced and free vortices -- 1.4.3 Flow in curved channels -- 1.5 Pressure losses -- 1.5.1 Friction losses (skin friction) |
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1.5.2 Influence of roughness on friction losses -- 1.5.3 Losses due to vortex dissipation (form drag) -- 1.6 Diffusers -- 1.7 Submerged jets -- 1.8 Equalization of non-uniform velocity profiles -- 1.9 Flow distribution in parallel channels, piping networks -- 2 Pump types and performance data -- 2.1 Basic principles and components -- 2.2 Performance data -- 2.2.1 Specific work, head -- 2.2.2 Net positive suction head, NPSH -- 2.2.3 Power and efficiency -- 2.2.4 Pump characteristics -- 2.3 Pump types and their applications -- 2.3.1 Overview -- 2.3.2 Classification of pumps and applications |
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2.3.3 Pump types -- 2.3.4 Special pump types -- 3 Pump hydraulics and physical concepts -- 3.1 One-dimensional calculation with velocity triangles -- 3.2 Energy transfer in the impeller, specific work and head -- 3.3 Flow deflection caused by the blades. Slip factor -- 3.4 Dimensionless coefficients, similarity laws and specific speed -- 3.5 Power balance and efficiencies -- 3.6 Calculation of secondary losses -- 3.6.1 Disk friction losses -- 3.6.2 Leakage losses through annular seals -- 3.6.3 Power loss caused by the inter-stage seal -- 3.6.4 Leakage loss of radial or diagonal seals |
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3.6.5 Leakage losses in open impellers -- 3.6.6 Mechanical losses -- 3.7 Basic hydraulic calculations of collectors -- 3.8 Hydraulic losses -- 3.9 Statistical data of pressure coefficients, efficiencies and losses -- 3.10 Influence of roughness and Reynolds number -- 3.10.1 Overview -- 3.10.2 Efficiency scaling -- 3.10.3 Calculation of the efficiency from loss analysis -- 3.11 Minimization of losses -- 3.12 Compendium of equations for hydraulic calculations -- 4 Performance characteristics -- 4.1 Head-capacity characteristic and power consumption -- 4.1.1 Theoretical head curve (without losses) |
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4.1.2 Real characteristics with losses -- 4.1.3 Component characteristics -- 4.1.4 Head and power at operation against closed discharge valve -- 4.1.5 Influence of pump size and speed -- 4.1.6 Influence of specific speed on the shape of the characteristics -- 4.2 Best efficiency point -- 4.3 Prediction of pump characteristics -- 4.4 Range charts -- 4.5 Modification of the pump characteristics -- 4.5.1 Impeller trimming -- 4.5.2 Under-filing and over-filing of the blades at the trailing edge -- 4.5.3 Collector modifications -- 4.6 Analysis of performance deviations |
| Summary |
Life is linked to liquid transport, and so are vital segments of economy. Pumping devices - be it the human heart, a boiler feeder or the cooling-water pump of a motorcar - are always part of a more or less complex system where pump failure can lead to severe consequences. To select, operate or even design a pump, some understanding of the system is helpful, if not essential. Depending on the appli- tion, a centrifugal pump can be a simple device which could be built in a garage with a minimum of know-how - or a high-tech machine requiring advanced skills, sophisticated engineering and extensive testing. When attempting to describe the state-of-the-art in hydraulic engineering of centrifugal pumps, the focus is nec- sarily on the high-tech side rather than on less-demanding services even though these make up the majority of pump applications. Centrifugal pump technology involves a broad spectrum of flow phenomena which have a profound impact on design and operation through the achieved ef- ciency, the stability of the head-capacity characteristic, vibration, noise, com- nent failure due to fatigue, as well as material damage caused by cavitation, - dro-abrasive wear or erosion corrosion. Operation and life cycle costs of pumping equipment depend to a large extent on how well these phenomena and the inter- tion of the pump with the system are understood |
| Bibliography |
Includes bibliographical references and index |
| Notes |
Print version record |
| Subject |
Centrifugal pumps.
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TECHNOLOGY & ENGINEERING -- Mechanical.
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Ingénierie.
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Centrifugal pumps
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Kreiselpumpe
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Produktentwicklung
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| Form |
Electronic book
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| LC no. |
2010928634 |
| ISBN |
9783642128240 |
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3642128246 |
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3642128238 |
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9783642128233 |
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