A hydrokinetic coil pump (HCP) is described by its name. It is a coil pump driven by the kinetic energy in flowing water. The hydrokinetic energy is converted into mechanical energy by means of a paddle-wheel. The coil pump makes up part of the paddle-wheel and together is called a HCP. The HCP floats in a stream of flowing water while tethered to the bank. The focus of the study was to identify and analyse the factors influencing the HCP. The HCP was then optimized for rural application. Data acquisition took place through experimentation on a full scale experimental platform according to a central composite experimental design. Variables used for the experimentation included; Stream Velocity, Delivery Head, Number of Coils, Discharge, Number of Paddles, Paddle-Wheel rotational speed Overall HCP efficiencies of up to 22 percent were obtained. The efficiency would drop as the stream velocity increased. Stream velocity has been identified as the most influential factor with regards to the variables analysed by this study. The HCP is ideal for rural application. The simplicity of the design ensures reliability as well as an effective water supply solution. The HCP is ideal for slow flowing rivers and can deliver up to 1190ℓ/h to a delivery head of 5m with a stream velocity of 1.2m/s. This is sufficient to supply a small rural community with running water.

A computer-based analog model to determine market potential for electric power-driven water pumps in developing countries. The purpose of this study is to develop a computer-based model that predicts the market potential for electric water pumps in developing nations.The logic employed in such an analysis first seeks out countries which at some point in their recent history have exhibited unusually high growth rates in aggregate pump demand during a period of several years. Next, the researcher evaluates the significance of specific social and economic "indicator" variables when matched with raw trade statistics for that country via stepwise regression--a computer assisted procedure. Finally, by isolating the economic and/or social factors that most closely parallel a country's pump demand, one can identify and rank the developing countries offering the greatest potential sales. The systematically chosen highpotential markets are then worthy of individual consideration and additional resource contribution in a given firm's strategic marketing plan.Since reach of the data were locally unavailable, a trip to the Department of Com©erce in Washington, D.C. and the United Nations in New York City was required. Funding to proceed with Part III of this report was solicited from, and granted by, a major domestic producer of electric water pump motors.The results of the research identified eight indicator variables directly correlated to the demand for imported pumps in developing nations. The regression equation composed of these eight variables, then, will be accepted as the best available model for predicting a country's pumpdemand. The regression equation also shows that each of the eight indicator variables contributes to changes in pump demand in different magnitudes.The research has identified forty-four developing nations with significant growth-rates in one or more of the eight indicator variables. Market projections are finally derived by comparing an individual country's indicator variable growth-rate to its historical pump demand growth-rate.

Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2009. / The aim of this study is to analyse the operation of a wind-electric pumping system (WEPS) as an alternative to conventional mechanical wind pumps for application in stand-alone water-pumping schemes. The steady-state as well as the dynamic operation of such a system is analysed. Through these analyses, practical guidelines are given in the design and sizing of the different system components to ensure efficient and reliable operation. Theoretical analyses are supported by measured results conducted on a small scale wind-electric pump system. The limitations involved in the design and implementation of a large scale wind-electric pump system are presented through a case study. It is firstly concluded that small-scale wind-electric pump systems have the potential of offering superior performance and flexibility to conventional mechanical wind pumps. It is secondly concluded that large-scale wind-electric pump systems are best suited, in terms of economic and practical feasibility, to pumping applications with low pressures and medium to high wind regimes at the turbine installation site.