Simulation of Pressurized Irrigation System in South of Iraq Using EPANET Model
Keywords:
EPANET, Irrigation, Simulation, Velocity, Pipeline, default ageAbstract
Water scarcity in Iraq is a real challenge that could be attributed to the lack of water inflows from the riparian countries and the impact of the climate change worldwide and in order to find alternatives with the appropriate solutions, the Ministry of Water Resources in Iraq intends to use modern irrigation systems in order to reduce the losses of water by increase transportation efficiency through using close and motorize irrigation system. Furthermore, educate farmers to adopt modern irrigation methods in field to reduce the runoff, evaporation and deep percolation losses. This research aimed to investigate two simulations of EPANET software program to compare the overall effect of sectoring in pressure, velocity, and pump station with indirect effect on pipe diameter and the total cost of the project. The results come with many facts with the focus on the effect in pressure intakes and velocity in pipeline with operation time and the default age of pipe station. Results of S1 illustrated the pressure in all intakes is less than the design standard of the system (2.5 bar) where the maximum pressure in system in Junction (5) is (0.721 bar) which precludes the sprinkler system to operate with high efficiency and prevents the distribution of water inside the sprinkler holes as a result of low pressure. Whilst the simulation of (S2) inferred by comparison that it is better in terms of the operating pressure of intakes, velocity in pipeline and default age of pump station. The minimum pressure in system in junction (28) is (2.632 bar) which it reaches the design standard even though using the same pump station in simulation S1. The velocity is acceptable in all pipeline system and the operation time is 18hr per day less than in simulation S1 which gives a rest period to the pump.
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