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Bamboo screens

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{{Language-box|english_link= Bamboo screens | french_link= Coming soon | spanish_link= Coming soon | hindi_link= Coming soon | malayalam_link= Coming soon | tamil_link= Coming soon | korean_link= Coming soon | chinese_link=竹滤网 | indonesian_link= Coming soon | japanese_link= Coming soon }}[[Image:Bamboo_screens_icon.png|right|80px]]__NOTOC__ [[Image:Bamboo_screens.PNG|thumb|right|200px|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 Bamboo 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 are mainly used for the profitability of farming and for reducing CO2 emissionsirrigation purposes.

[[Image:Bamboo_screens.PNG|thumb|right|150px|Low-cost bamboo screens that improve pumping efficiency]]===Suitable conditions===

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! width="50%" style="background:#efefef;" | Advantages

! style="background:#ffdeadf0f8ff;" | Disadvantages

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| valign="top" | Reduce fuel consumption of irrigationnormally used for pumps.<br>

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 == Capacity =Construction, operations and maintenance===

15 litres / sec (3 inch well, length of screen 4 meter).

=== Costs == New screen is 20% of the cost of conventional model. == Applying conditions ==<ul><li><b>Numbers:</b> 3,000 in India.</li><li><b>Application</b> Mainly irrigation. </li></ul>

== Rope pump building manual ==New screen costs 20% of a conventional model.

PRACTICA foundation ===Manuals, videos and the Technical Training Programme of the ETC links===* [http://www.practicafoundation.nl www.practicafoundation.nl Practica Foundation (TTP/ETC) have put together a really ]* [http://www.greenoceanteriin.org/akvo/PRACTICA_180306_Rope_pump_manual_Ethiopia_March_2006_completewww.teriin.pdf excellent manual org TERI] (In 2002, TERI published a book on how to build rope the subject, entitled Technology innovation and promotion in practice: pumps] (PDF, 2channels and wells.5 Mbyte). It is an 86 page long document with detailed instructions.

== External links =Acknowledgements===* Evaluations [http://www.ircarcworld.nl www.irc.nl ]* Africa [http:org/downloads/www.pumpaid.org wwwsmart%20water%20solutions.pumpaid.org ]* General info [httppdf Smart Water Solutions://www''Examples of innovative, low-cost technologies for wells, pumps, storage, irrigation and water treatment.ropepump.com www.ropepump.com''] * How to build [http://wwwNetherlands Water Partnership (NWP).ropepumpsThird edition, 2006.org www.ropepumps.org]

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