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Norwegian University of Science and Technology (NTNU) 2020

Performance of solar-powered water pumping systems for rural water supply : A case study from Tanzania

Asklund, Maria

Titre : Performance of solar-powered water pumping systems for rural water supply : A case study from Tanzania

Auteur : Asklund, Maria

Université de soutenance : Norwegian University of Science and Technology (NTNU)

Grade : Master’s thesis in Civil and Environmental Engineering 2020

Résumé partiel
Safe drinking water is crucial for the health and prosperity of human beings. Still, the United Nations (UN) has estimated that two billion people live in countries facing high water-related stress. This thesis evaluates the performance of a number of solar-powered water pumping systems that were installed in Tanzania by the Norwegian Church Aid (NCA) from 2015 to 2019. The main topics investigated are water quantity and quality, hydrogeology, management, and remote monitoring. The purpose is to suggest strategies for improving the performance of existing and future pumping stations.
The results are mostly based on a case study which was conducted in the regions of Manyara and Singida in February 2020. A wide range of methods were employed in the fieldwork, including measurements of borehole hydraulics and water quality parameters, testing of a remote monitoring system, and interviews. In addition, relevant literature and technical documents were analyzed.
Demand and supply estimations show that the pumping stations do not cover the water demand in the dry season, even if the pumps run efficiently for eight hours a day. In addition, the pumps tend to stop in cloudy weather reducing the quantity of water provided and threatening reliability. Current pumping rates appear to be sustainable considering data from the fieldwork and pumping tests carried out before installation. This indicates that the boreholes might have the potential to supply greater water quantities.

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Page publiée le 27 mars 2022