Start / Water and irrigation / Pumping, energy and cost
Enter the dynamic head, set efficiency, energy tariff, cycle depth, and yield to find out how much irrigation costs per bag.
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.
How much each bag costs when the cycle gets more or less water; the dot marks your cycle.
Total cycle cost per hectare with different pumping efficiencies; the highlighted bar is yours.
Drag the controls to simulate data different from what you entered (from 30% less to 30% more) and watch the result change instantly.
Cycle cost per hectare and per bag for depths of 200 to 600 mm, with the head, efficiency, energy tariff and other costs 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 system's total dynamic head, the pump set efficiency, and the energy tariff. Then the total depth applied in the cycle, the other costs per hectare, and the yield. The calculator returns the energy per millimeter, the cycle cost per hectare, and the cost per bag.
Height of 60 m, 65% efficiency, tariff of R$ 0.80/kWh, 400 mm in the cycle, R$ 300/ha of other costs and 120 bags/ha.
Energy = 0.002725 × 60 ÷ 0.65 = 0.2515 kWh/m³. Per mm and hectare: 10 × 0.2515 × 0.80 = R$ 2.01. Cycle = 400 × 2.01 + 300 = R$ 1,105/ha. Per bag = 1,105 ÷ 120 = R$ 9.21.
For depth and interval, see the irrigation interval. For the system flow rate, use the flow required for irrigation.
Add the elevation difference between the intake and the highest point, the pressure head required by the sprinkler or pivot, and the friction losses in the pipe. The result is in meters of water column.
Because a pump with low efficiency needs more energy to deliver the same water. Replacing the pump set or doing maintenance can reduce the cost per bag.
Depends on head and efficiency. With a 60 m head, 65% efficiency and R$ 0.80 per kWh, each mm per hectare costs about R$ 2.01.
No, raw water taken in is usually free to use. If there is a water-use grant, water tariff, or charge fee, add that amount to the other costs.
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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