Event Title

Hydraulics of IDEal Irrigation Systems

Presenter Information

Evan Thompson

Location

Eccles Conference Center

Event Website

http://water.usu.edu/

Start Date

4-2-2009 2:40 PM

End Date

4-2-2009 3:00 PM

Description

The hydraulics of IDEal drip irrigation system components were analyzed under controlled laboratory conditions. The results can be used as inputs for the future design of IDEal systems. The valve loss coefficient for the lateral-submain connector valves was determined. The head loss due to friction in the lay-flat laterals can be accurately estimated with standard friction loss equations using a smaller effective diameter based on the wall thickness and inlet pressure head. The equivalent length barb loss expressed as an equivalent length of lateral was calculated for button emitters, and micro-tubes inserted to lengths of 5 and 10 cm. It was concluded that the micro-tube insertion range of 5-10 cm does not significantly affect the barb loss. The head-discharge relationship of pre-punched holes, button emitters, and micro-tubes was characterized. A selection of systems under actual field conditions in the Central Rift Valley of Ethiopia was evaluated. Recommendations were given for future research and system improvements in: manufacturing, installation, operation, and maintenance.

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Apr 2nd, 2:40 PM Apr 2nd, 3:00 PM

Hydraulics of IDEal Irrigation Systems

Eccles Conference Center

The hydraulics of IDEal drip irrigation system components were analyzed under controlled laboratory conditions. The results can be used as inputs for the future design of IDEal systems. The valve loss coefficient for the lateral-submain connector valves was determined. The head loss due to friction in the lay-flat laterals can be accurately estimated with standard friction loss equations using a smaller effective diameter based on the wall thickness and inlet pressure head. The equivalent length barb loss expressed as an equivalent length of lateral was calculated for button emitters, and micro-tubes inserted to lengths of 5 and 10 cm. It was concluded that the micro-tube insertion range of 5-10 cm does not significantly affect the barb loss. The head-discharge relationship of pre-punched holes, button emitters, and micro-tubes was characterized. A selection of systems under actual field conditions in the Central Rift Valley of Ethiopia was evaluated. Recommendations were given for future research and system improvements in: manufacturing, installation, operation, and maintenance.

https://digitalcommons.usu.edu/runoff/2009/AllAbstracts/5