Profile
Publication details for Dr Neal Wade
Wade, N. S. & Short, T. D. (2006). Progress in the Development of a Novel Photovoltaic Water Pump. International Conference on Renewable Energies and Water Technologies, Almería, Spain.- Publication type: Edited works: conference proceedings
- ISSN/ISBN: 84-933658-3-1
- Keywords: linear actuator, positive displacement, appropriate technology
Author(s) from Durham
Abstract
A linear actuator driving a positive displacement pump is under investigation as a low-cost, low-technology and yet effective method for lifting water. It is anticipated that when coupled with a photovoltaic array, this pump will be an attractive solution for water pumping in remote areas of low-income countries. The pump operates by energising an electromagnet to lift a piston, at the top of the stroke current is disconnected and the magnet releases the piston. Suitably positioned valves guide water during repetitions of this cycle to form a working pump.
This system is under investigation both through simulation and tests on a prototype device. Electromagnetic properties are found from analytic expressions and finite element analysis, while a dynamic model has been developed in MATLAB Simulink. A prototype pump has been designed and built, based on the results of initial simulation work. Measurement of current, voltage and piston displacement provides data for the characterisation of the dynamics of the mechanism. This information is fed back for verification and modification of the simulation model.
The inter-related electromagnetic and mechanical properties that determine the performance of this pump are explained and typical output performance is presented.