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Pelton Turbines by Zhengji Zhang at Abbey's Bookshop,
Pelton Turbines
— —
Zhengji Zhang

Pelton Turbines

Zhengji Zhang

$260.95   $208.95

Hardback

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English
Springer International Publishing AG
21 June 2016
Meteorology & climatology; Engines & power transmission; Mechanics of fluids; Water supply & treatment
This

book concerns the theoretical foundations of hydro mechanics of Pelton

turbines from a viewpoint of engineering.

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 quantification of

all possible losses existing in the Pelton turbine and the

indication of most available potential for further enhancing the system

efficiency. As a guideline the book therefore supports further

developments of Pelton turbines with regard to their hydraulic designs

and optimizations. It is thus suitable for the development

and design engineers as well as those working in

the field of turbo machinery. Many laws described in the book can also

be directly used to simplify aspects of computational fluid dynamics

(CFD) or to

develop new computational methods. The well-executed examples help

better understanding the related flow mechanics.
By:  
Imprint:   Springer International Publishing AG
Country of Publication:   Switzerland
Edition:   1st ed. 2016
Dimensions:   Height: 235mm,  Width: 155mm,  Spine: 19mm
Weight:   6.151kg
ISBN:   9783319319087
ISBN 10:   3319319086
Pages:   311
Publication Date:  
Audience:   Professional and scholarly ,  Undergraduate
Format:   Hardback
Publisher's Status:   Active
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.

Dr.-Ing. Zh. Zhang graduated from the School of Energy & Power Engineering of Xi’an Jiaotong University (PR China) in 1981. He received his PhD at the Institute of Thermo and Fluid Dynamics of Ruhr-University Bochum (Germany). Afterwards he joined Sulzer Markets & Technology Ltd in Winterthur, Switzerland, for experimental research of engineering flows. During this time he was awarded the company innovation prize. He changed later to the Oberhasli Hydroelectric Power Company (KWO) and later to Rütschi Fluids AG. Currently he is a visit engineer for supporting the research projects at the Laboratory of Hydraulics, Hydrology and Glaciology (VAW) of the Swiss Federal Institute of Technology in Zurich (ETHZ). He is the author of the monographs «Freistrahlturbinen» 2008 and «LDA Application Methods» 2010. In 2014, he was elected to ASME Fellow.

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