Pelton Turbines

• Main Author: Zhang, Zhengji (Author)
• Corporate Author: SpringerLink (Online service)
• Format: Electronic eBook
• Language: English
• Published: Cham : Springer International Publishing : Imprint: Springer, 2016.
• Subjects: Engineering.; Energy systems.; Water-supply.; Fluid mechanics.; Machinery.; Engineering geology.; Engineering > Geology.; Foundations.; Hydraulics.; Engineering Fluid Dynamics.; Machinery and Machine Elements.; Energy Systems.; Water Industry/Water Technologies.; Geoengineering, Foundations, Hydraulics.

This book concerns the theoretical foundations of hydromechanics of Pelton turbines from the engineering viewpoint. For reference purposes, all relevant flow processes and hydraulic aspects in a Pelton turbine have been analyzed completely and systematically. The analyses especially include the quan...

Table of Contents:

• Introduction
• Working principle of Pelton turbines
• Injector characteristics
• Jet characteristics and measurements
• Interaction between the jet and Pelton wheel
• Fluid mechanics in the rotating bucket
• Water spreading in the rotating bucket
• Exit flow conditions
• Exit flows and hydraulic losses
• Fricton effects and flow friction theorem
• Viscous cross-flow through the bucket
• Viscous longitudinal flow through the bucket
• Friction and windage losses in Pelton wheels
• Power loss due to bearing frictions
• Hydraulic and mechanical efficiency
• Real hydraulic efficiency characteristics
• Runaway speed and acceleration profile
• Hydraulic design of Pelton turbines
• Multi-jet Pelton turbines
• Geometric and hydraulic similarities
• Model turbine tests and efficiency scale-up
• Sand abrasion and particle motion in the bucket flow
• Bucket mechanical strength and similarity laws
• Appendices: Nomenclature
• Definition of derived parameters
• Specific speed and application in Pelton turbines
• Specification of the jet piece for a bucket
• Specification of the bucket positions
• Particle motion along the streamlines in the Pelton Bucket.