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Dhone

499 bytes added, 21:13, 2 November 2012
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[[Image:Dhone.jpg|thumb|right|250px|Water passing through the dhone to an irrigation canal. Photo: [http://www.cd3wd.com/cd3wd_40/cd3wd/Practact/KnO-100410-human_animal_water_lifters.pdf Practical Action]]]
The trough is lowered into the water by exerting pressure using a rope or the foot of the operator until the closed end is submerged in water. Upon releasing pressure the trough comes to its original position and the water is delivered to the irrigation channel. Typical yields of 80-160 l/min can be obtained from the dhone between 0.3-1.0 m.
 
 
==Suitable conditions==
{| border="1" cellpadding="5" cellspacing="0" align="center"
|-
! width="50%" style="background:#efefef;" | Advantages
! style="background:#ffdead;" | Disadvantages
|-
| valign="top" | - A relatively inexpensive traditional technology which can be locally made and maintained <br>
- Easy to operate <br>
- Water yields of approximately 160 l/min for lifts of less than 1 m
| valign="top" |- Limited to lifts of less than 1.5 m <br>
- Low to medium efficiency (20-50%)
|}
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