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Pumps as Turbines: A User's Guide

Handbook / Manual

By: Arthur Williams

Practical Action Publishing

Paperback | Jan 2003 | Edition: 2 | #152685 | ISBN: 1853395676
Availability: Usually dispatched within 6 days Details
NHBS Price: £10.95 $14/€13 approx

About this book

As interest in the provision of decentralized electricitiy in the South increases, this practical handbook is as important as ever. Pumps as Turbines: A user's guide is a practical handbook for engineers and technicians involved in designing and installing small water-power schemes for isolated houses and communities. It concerns the use of standard pump units as a low-cost alternative to conventional turbines to provide stand-alone electricity generation in remote locations. This book arises out of the practical experience of field work in village locations in a number of countries. This second edition includes a brand new chapter featuring a case study of a PAT (pump-as-turbine) installation from a recent scheme installed in collaboration with ITDG Kenya. It covers how to select the type of pump based on site requirements, potential pump modifications and caution with single-phase pumps. The pump selection process is described through this step-by-step example, where the site head would have been too low for a Pelton turbine. The case study demonstrates that now, possibly more than ever before, the use of pumps as turbines offers a reliable, low-cost option for rural electrification.


Contents

Applications for pumps as turbines Why use a pump as a turbine? Choice of pump type Pump and turbine performance curves Design of the civil works Design of the electrical system Selecting a pump as turbine for a particular site Practical operation of a pump as a turbine Case study of a PAT installation Appendices: Pump as turbine operation at reduced flow; Parallel operation of pumps as turbines; Syphon intake for intermittent operation; Typical efficiencies of induction motors; Unit conversion for head and flow; Estimating pump performance from physical measurements; Calculating safe wall thickness for steel pipe; Selecting penstock diameter and calculating head loss Further reading Index

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Biography

Arthur Williams has worked with the Intermediate Technology Development Group on micro-hydro since 1987. He completed a Ph.D. at Nottingham Trent University on the use of pumps as turbines and continues to work there as a Senior Research Fellow. He has his own engineering consultancy, Hydro-Active Engineering, and has worked in Nepal, Pakistan, Sri Lanka and Guyana.

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