Pump selection : a field guide for energy efficient and cost effective water pumping systems for developing countries

It presents the decision-making process as a logical progression, first discussing what information is needed before examining pumping system alternatives, and then showing readers how to gather and analyze the needed information so it can be used in applying a set of selection criteria. To achieve this purpose, the manual attempts to: (1) describe the process of properly selecting pumping equipment for small- scale water systems, based on site and resource characteristics, as well as the engineering, financial, economic, and institutional characteristics of each type of system; (2) assist with the initial screening of water pumping technologies by describing what information is necessary to determine equipment needs and how to gather it; (3) provide detailed guidelines for analyzing the data required for a technical comparison of diesel, solar, wind, and hand pumping systems; (4) inform readers on recent and past operating experience with diesel, solar photovoltaic, wind, and handpump systems, including problems and new approaches to making different designs more appropriate for operating conditions in developing countries; (5) give estimates of typical capital and recurrent O&M costs for the systems considered here: and (6) show readers how to calculate life cycle costs of competing systems, and how to use this information to determine water tariffs (if desired). The manual is written for a wide audience -- it is not intended to be a comprehensive reference on the engineering and economic design and analysis of all small-scale water pumping equipment. Herein, detail has been sacrificed to provide broad coverage of all relevant areas. Where appropriate, readers are referred to other sources (see Appendix A) for in-depth material on particular topics. (Author abstract)