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Dhone

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==Suitable conditions==

The Dhone is used in Bangladesh.<br>

It is also widely used (probably in the region of one million) along the Ganges and Brahmaputra rivers in the Indian sub-continent.

The Dhone is a great improvement to the [[swing basket]], as it only needs one person to operate, and can move more water, more quickly. It is a little more expensive than a swing basket, but considering it frees up a laborer and moves more water, it is still very cheap compared to other water lifting devices.

==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 is approximately 1m (40in). <ref>[http://www.scribd.com/doc/57095012/60/Traditional-Water-Lifting-Devices Water Lifting Devices]. FAO, 1986.</ref>

 

==Manuals, videos, and links==

* [http://docs.watsan.net/Scanned_PDF_Files/Class_Code_2_Water/230-85HU-1269.pdf Human and Animal-Powered Water Lifting Devices: A state of the art survey].

==References==

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