| Additional Charging by an Hydro Plant | ||
![]() Small water turbine connected to the water pipe boosts battery to avoid charging the battery by petrol generator |
To reduce the generator operating hours during the rainy season an hydro electric plant was installed. Available water quantity: ..... litres/sec at 2.5 bar Nozzle size: 6 mm Type of turbine: Pelton wheel Manufacturer of turbine: Harris/USA Price including transport: Abt. DEM 1500.- Max. Carging current: 2.4 Amps/12V (at given water pressure and nozzle size) Regulator: Shunt regulator, homemade
Experience: This turbine saved many hours of generator work during the very rainy season (El-Nino) October97- August 98. (see weather data of site) While running, it made the solar system obsolete (2.4 Amps all around the clock!) Weekly cleaning of the whole system had been absolutly necessary, to avoid blocking of the water intake, pipe system, nozzle and the turbine. (Required time: abt. 2 hours per week.) After more than 1 1/4 years (>10000 hours of operration) the slip rings and the brushes of the generator had been finished, and had to be replaced.
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