Centrifugal Pump User’s Guidebook

Preface. Part I: Introduction: Rotodynamic pumps. Performance characteristics of centrifugal pumps. Classification of centrifugal pumps. Part II: Performance factors: Effects of free air in the pumped liquids. Cavitation. Cavitation in centrifugal pumps. Losses of energy. Effects of temperature and viscosity on pump performance. Recirculation. Axial and radial thrusts and balancing. Miscellaneous factors that affect pump performance. Part III: Problems encountered with centrifugal pumps: Testing. Pump performance at reduced NPSH. Pumping system layout. Installation, handling, and operation of pumps and pumping systems. Problems with bearings. Sealing rotating parts. Miscellaneous studies. Problems related to specific circumstances. Special cases that have proven very difficult to solve. Part IV: Solving pump problems: Solving problems prior to visiting the site. Conclusions drawn from visual inspection of failed parts. On-site inspection and testing. Part V: Eliminating pump problems and modifying performance: Remedial methods. Effects of speed and impeller OD on pump performance. Effects of reducing the impeller width. Modifying the casing geometry. Various methods of altering pump performance. Part VI: A glimpse of the future. New findings concerning the mode of operation of rotodynamic impellers. Some future applications of the presented theory. Appendices. Bibliography. Index.