Difference between revisions of "Bamboo screens"
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| − | + | [[Image:Bamboo_screens.PNG|thumb|right|250px|Low-cost bamboo screens that improve pumping efficiency, 4m long. Photo: NWP.]] | |
Small-scale irrigation in India usually involves the use of diesel or electric-powered suction pumps, drawing water from water tables down to 7 m deep. The India-North Bengal Terai Development Project carried out pump energy analysis, which showed that tube well screens excessively restricted water flow, resulting in low overall pumping efficiency. Improving these screens resulted in a reduction of fuel consumption of over 40%. Since publication of this innovation, thousands of wells have been fitted with the new screens, with benefits for the profitability of farming and for reducing CO2 emissions. | Small-scale irrigation in India usually involves the use of diesel or electric-powered suction pumps, drawing water from water tables down to 7 m deep. The India-North Bengal Terai Development Project carried out pump energy analysis, which showed that tube well screens excessively restricted water flow, resulting in low overall pumping efficiency. Improving these screens resulted in a reduction of fuel consumption of over 40%. Since publication of this innovation, thousands of wells have been fitted with the new screens, with benefits for the profitability of farming and for reducing CO2 emissions. | ||
| − | + | Bamboo screens are mainly used for irrigation purposes. | |
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| − | + | ==Construction, operations and maintenance== | |
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15 litres / sec (3 inch well, length of screen 4 meter). | 15 litres / sec (3 inch well, length of screen 4 meter). | ||
| − | == Costs == | + | ==Costs== |
New screen costs 20% of a conventional model. | New screen costs 20% of a conventional model. | ||
| − | == | + | ==Reference manuals, videos, and links== |
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* [http://www.practicafoundation.nl www.practicafoundation.nl Practica Foundation] | * [http://www.practicafoundation.nl www.practicafoundation.nl Practica Foundation] | ||
* [http://www.teriin.org www.teriin.org TERI] (In 2002, TERI published a book on the subject, entitled Technology innovation and promotion in practice: pumps, channels and wells.) | * [http://www.teriin.org www.teriin.org TERI] (In 2002, TERI published a book on the subject, entitled Technology innovation and promotion in practice: pumps, channels and wells.) | ||
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| + | ==Acknowledgements== | ||
Revision as of 23:50, 1 May 2012
Small-scale irrigation in India usually involves the use of diesel or electric-powered suction pumps, drawing water from water tables down to 7 m deep. The India-North Bengal Terai Development Project carried out pump energy analysis, which showed that tube well screens excessively restricted water flow, resulting in low overall pumping efficiency. Improving these screens resulted in a reduction of fuel consumption of over 40%. Since publication of this innovation, thousands of wells have been fitted with the new screens, with benefits for the profitability of farming and for reducing CO2 emissions.
Bamboo screens are mainly used for irrigation purposes.
| Advantages | Disadvantages |
|---|---|
| Reduce fuel consumption of irrigation. |
|
Construction, operations and maintenance
15 litres / sec (3 inch well, length of screen 4 meter).
Costs
New screen costs 20% of a conventional model.
Reference manuals, videos, and links
- www.practicafoundation.nl Practica Foundation
- www.teriin.org TERI (In 2002, TERI published a book on the subject, entitled Technology innovation and promotion in practice: pumps, channels and wells.)
