Rating Curves for Adjustable Tricklers

by A. Alajaji, King Faisal Univ, Al-Ahsa, Saudi Arabia,
Otto Helweg, King Faisal Univ, Al-Ahsa, Saudi Arabia,
A. Al-Naim, King Faisal Univ, Al-Ahsa, Saudi Arabia,
S. Al-Barrak, King Faisal Univ, Al-Ahsa, Saudi Arabia,



Document Type: Proceeding Paper

Part of: Steel Structures

Abstract:

This paper presents the approach and results of evaluating adjustable drip/trickle emitters to obtain rating curves. The emitter discharge depends on both system pressure and emitter opening (turns). The tests began at 0. 25 turn and proceed to 2. 5 turns. The pressure was varied from 5 to 40 psi (34 - 276 Kpa). The testing apparatus consisted of 11 tricklers. Each run consisted of three replications. The results showed considerable variance in discharge for pressure less than 10 psi (69 Kpa).

Subject Headings: Trickle irrigation | Ratings | Curvature | Water discharge | Water pressure | Water flow | Irrigation water

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