SPIS Toolbox - Irrigation System - Revision history

Ranisha at 19:27, 21 July 2020

2020-07-21T19:27:31Z

Ranisha at 15:19, 21 July 2020

2020-07-21T15:19:53Z

Stefan Eibisch at 15:00, 28 March 2018

2018-03-28T15:00:40Z

Stefan Eibisch at 14:59, 28 March 2018

2018-03-28T14:59:50Z

Stefan Eibisch at 14:59, 28 March 2018

2018-03-28T14:59:28Z

Ranisha at 10:58, 14 November 2017

2017-11-14T10:58:05Z

Ranisha at 15:13, 13 November 2017

2017-11-13T15:13:51Z

Ranisha at 10:35, 13 November 2017

2017-11-13T10:35:53Z

Ranisha at 10:47, 22 September 2017

2017-09-22T10:47:07Z

Ranisha at 09:21, 20 September 2017

2017-09-20T09:21:03Z

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 Water-saving irrigation technologies working at comparably low operating pressures are the preferred option in connection with PV pumping systems.
-Drip irrigation systems normally operate at high pressures of 1–10 bar. Fortunately, the technology has been adapted to cater for low pressures and a more simplified operation. These low-pressure drip irrigation systems can give 80% uniform water application even from a few meters pressure. The performance is very much dependent of the pressure, the size and shape of the field being irrigated. Solar-powered drip irrigation is the “marriage” of two systems that go very well together. Drip irrigation is ideal for high-value crop production such as vegetables and fruits, and due to its high efficiency the solar pump can be quite conservatively sized.
+Drip irrigation systems normally operate at high pressures of 1–10 bar. Fortunately, the technology has been adapted to cater for low pressures and a more simplified operation. These low-pressure drip irrigation systems can give 80 % uniform water application even from a few meters pressure. The performance is very much dependent of the pressure, the size and shape of the field being irrigated. Solar-powered drip irrigation is the “marriage” of two systems that go very well together. Drip irrigation is ideal for high-value crop production such as vegetables and fruits, and due to its high efficiency the solar pump can be quite conservatively sized.
 ===== '''<span style="color:#879637;">Suitability of irrigation methods to PV pumping</span>''' =====

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 | style="width: 149px;" | <p style="text-align: center;">Low pressure drip irrigation</p>
-| style="width: 161px;" | <p style="text-align: center;">80% </p>
+| style="width: 161px;" | <p style="text-align: center;">80 % </p>
 | style="width: 204px;" | <p style="text-align: center;"> 1–10 m </p>

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 |-
 | style="width: 149px;" | <p style="text-align: center;">Flood irrigation</p>
-| style="width: 161px;" | <p style="text-align: center;">40–50% </p>
+| style="width: 161px;" | <p style="text-align: center;">40–50 % </p>
 | style="width: 204px;" | <p style="text-align: center;">0.5 m </p>
 | style="width: 224px;" | <p style="text-align: center;">barely cost-efficient </p>
 |-
 | style="width: 149px;" | <p style="text-align: center;">Open canals</p>
-| style="width: 161px;" | <p style="text-align: center;"> 50–60% </p>
+| style="width: 161px;" | <p style="text-align: center;"> 50–60 % </p>
 | style="width: 204px;" | <p style="text-align: center;">0.5–1 m </p>
 | style="width: 224px;" | <p style="text-align: center;">depends on local conditions </p>
@@ Line 40: / Line 40: @@
 | style="width: 149px;" | <p style="text-align: center;">Sprinkler </p>
-| style="width: 161px;" | <p style="text-align: center;"> 70–80% </p>
+| style="width: 161px;" | <p style="text-align: center;"> 70–80 % </p>
 | style="width: 204px;" | <p style="text-align: center;">10–20 m </p>
@@ Line 54: / Line 54: @@
 | style="width: 149px;" | <p style="text-align: center;">High pressure drip irrigation</p>
-| style="width: 161px;" | <p style="text-align: center;">85–95%</p>
+| style="width: 161px;" | <p style="text-align: center;">85–95 %</p>
 | style="width: 204px;" | <p style="text-align: center;">10–100 m </p>

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	=== '''<span style="color:#879637;">10. Irrigation System</span>''' ===		=== '''<span style="color:#879637;">10. Irrigation System</span>''' ===

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-=== '''<span style="color:#879637;">Irrigation System</span>''' ===
+=== '''<span style="color:#879637;">10. Irrigation System</span>''' ===
 [[File:ExterDripEm.jpg|thumb|right|300px|External drip emitter (Source: Andreas Hahn, 2015)]]
 Water is the most important input required for plant growth in agriculture production. Irrigation is the controlled application of water through man-made systems to supply water requirements of plants not satisfied by rainfall alone. Various methods can be used for irrigation (starting from simply watering plants with a pot or a bucket). The choice of a particular irrigation system mainly depends on the crops to be irrigated, the underlying water availability, irrigation water requirements and energy supply as well as the financial capacity of the farm household. Solar pumps pump up water to the farm, from where it can be collected for further distribution by hand. Alternatively, it can be pumped directly to the field through a system of canals (surface irrigation) or pipes (sprinkler and drip irrigation). In principle, solar pumps can be used for supplying water to any kind of irrigation system. The size (and cost) of the PV generator is mainly determined by the water and pressure requirements of the irrigation scheme. However, it is important to consider that SPIS are relatively expensive, requiring producers to grow high-value crops to guarantee its financial viability. In addition, water savings will have a positive influence on the investment costs of the solar pumping system and the environment.

← Older revision		Revision as of 10:47, 22 September 2017
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	=== '''<span style="color:#879637;">Irrigation System</span>''' ===		=== '''<span style="color:#879637;">Irrigation System</span>''' ===