Improving the sustainability of farming systems under semi-arid conditions by enhancing crop management

Garcı́a-López, J.; García-Ruiz, Rafael; Domı́nguez, J.; Lorite, Ignacio J.

doi:10.1016/j.agwat.2019.105718

Cited by 5 publications

(1 citation statement)

References 45 publications

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“…Not only do these solutions appeal to the imperative environmental standards, but also have economic advantages, which are displayed in these new scientific approaches [9]. The development of these energy recovery techniques will decisively allow managers to contribute to the improvment of the efficiency of water-energy management [10].…”

Section: Introductionmentioning

confidence: 99%

PATs Behavior in Pressurized Irrigation Hydrants towards Sustainability

Sánchez

Fernandes

Branco

et al. 2021

Water

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Sustainability and efficiency in irrigation are essential in the management of the water–energy–food nexus to reach the Sustainable Development Goals in 2030. In irrigation systems, the reduction of energy consumption is required to improve the system efficiency and consequently the sustainability indicators of the water network. The use of pumps working as turbines (PATs) has been a feasible solution to recover the excess of energy where pressure reduction valves are installed. This research demonstrates the use of PATs under steady and unsteady conditions by analyzing the application in a real irrigation networks located in Vallada (Valencia, Spain). The study shows the possibility of recovering 44 MWh/year using PATs installed upstream of the irrigation hydrants. The real behavior of the PAT operation in a stand-alone recovery energy solution allowed analysis of the flow, head and efficiency variation as a function of the rotational speed, as well as the minimum capacitance to self-excite the generator and the resistive load of the electrical circuit. The PAT limit is examined in terms of the overpressure induced by a fast closure manoeuvre of hydrants, and the runaway conditions due to the disconnection from the electrical load.

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Section: Introductionmentioning

confidence: 99%