Rope-Pump System Modelling using Renewable Power Combinations

Cai Williams
University of Bristol, Bristol, UK

Andrew Beattie
University of Bristol, Bristol, UK

Tim Parker
University of Bristol, Bristol, UK

Jo Read
University of Bristol, Bristol, UK

Julian D. Booker
University of Bristol, Bristol, UK

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp110572861

Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:23, s. 2861-2868

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Publicerad: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


Rope-pumps are a highly successful method of lifting water by hand in developing countries. The primary aim of this work was to develop a validated methodology to decide the most cost effective renewable power sources in order to fully automate the operation of the rope-pump for given well depth; volume of water required and environmental conditions in the proposed installation location. The renewable energy sources considered were a 150W photovoltaic (PV) panel and a 100W wind turbine; either used in isolation or in combination with a battery and motor; or direct drive to a motor; providing five viable systems for further consideration. All system elements and the rope-pump itself were fully characterised through experimental testing. Computer-based simulations incorporating environmental conditions for Lilognwe; Malawi; were used to provide a 15 year lifecycle analysis. Results show that the use of PV powered system can deliver water reliably; at the lowest cost. For validation purposes; each rope-pump system was also analysed with the environmental conditions found in Bristol; UK providing comparison results; indicating the approach is systematic and rigorous enough to provide an effective decision making tool for the installation of rope-pumps anywhere; provided environmental data is available.


Rope-pump; renewable power; system modelling; system selection


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