Start / Water and irrigation / Irrigation systems
How many hours the system must run to apply the desired depth.
Pre-sizing and estimating tool: the results do not replace a design, calculation, or report signed by a qualified professional, nor verification against the applicable standards.
Operating hours to apply each net depth, with the system entered.
Millimeters per hour for each dripper spacing, at the same flow rate.
Drag the controls to simulate data different from what you entered (from 30% less to 30% more) and watch the result change instantly.
Hours per event for each combination of flow rate and net depth, with the spacing and efficiency entered.
The calculation done in steps, with the values you entered.
The calculation memo gathers this page's inputs, results, equations, assumptions, and references, with fields for project, responsible person, and review. The full report also includes the charts and interpretations, in color. In the print window, choose Save as PDF.
Enter the spacings between rows and between drippers, the flow rate of one dripper, and the depth you want to apply. The calculator shows the application rate and the irrigation time per event.
Lines 3.0 m apart, drippers 0.5 m apart, flow rate of 2.0 L/h, net depth of 6 mm, and 90% efficiency.
Wetted area = 3.0 × 0.5 = 1.5 m²; rate = 2.0 ÷ 1.5 = 1.33 mm/h. Gross depth = 6 ÷ 0.90 = 6.67 mm.
Time = 6.67 ÷ 1.33 = 5.0 hours per event.
The rate is the flow divided by the wetted area. If the flow drops, the same depth takes longer to apply.
Yes, as long as you use the flow per emitter and the emitter spacing of the tape; confirm the data with the manufacturer.
Important notice: the Agrocalcs tools make estimates and preliminary sizing based on the data entered and on published engineering methods. They do not replace a design, a calculation report or a report signed by a qualified professional (CREA/ART), nor verification against the applicable technical standards and legislation, such as the Regulatory Standards of the Ministry of Labor. Material and fuel properties vary: check with the manufacturer or with analyses of your process before deciding. By using the site, you agree to the Terms of Use.
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