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Dhone

322 bytes added, 03:34, 22 November 2012
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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==
Akvopedia-spade, akvouser, bureaucrat, emailconfirmed, staff, susana-working-group-1, susana-working-group-10, susana-working-group-11, susana-working-group-12, susana-working-group-2, susana-working-group-3, susana-working-group-4, susana-working-group-5, susana-working-group-6, susana-working-group-7, susana-working-group-8, susana-working-group-9, susana-working-group-susana-member, administrator, widget editor
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