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Dhone

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- Low to medium efficiency (20-50%)

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==Field experiences==

A single dhone will lift 7.5 litre/sec at a lift of 0.75m (115gall/min at 30 inches), which reduces to about 2 litre/sec (30 gall/min) at 1.5m (or 60inches) head. Therefore the dhone will move more than twice as much water as a swingbasket at low lifts, moreover using the power of only one person rather than two. Many Bangladesh farmers try and use a single stage dhone at an overly high lift, and lose a lot of performance as a result; the optimum lift per stage isapproximately lm (40in). <ref>[http://www.scribd.com/doc/57095012/60/Traditional-Water-Lifting-Devices Water Lifting Devices]. FAO, 1986.</ref>

 

==References==

</references>

==Acknowledgements==

* Jane Olley, [http://www.cd3wd.com/cd3wd_40/cd3wd/Practact/KnO-100410-human_animal_water_lifters.pdf HUMAN & ANIMAL POWERED WATER-LIFTING DEVICES FOR IRRIGATION]. Practical Action, November 2008.

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