Energy and Hydraulic Performance-Based Management of Large-Scale Pressurized Irrigation Systems

Khadra, Roula; Moreno, María Alejandra; Awada, Hassan; Lamaddalena, Nicola

doi:10.1007/s11269-016-1365-z

Cited by 21 publications

(18 citation statements)

References 21 publications

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“…In this process, the day is divided into 6 windows of 4 h, each window with a user pre-defined probability (proportional to its frequency of occurrence) that fits farmers' behaviour in the irrigation district. In fact, there are hours of the day where farmers prefer to irrigate, according to their commitments, customary, social conditions and availability of pressure at their hydrants [18]. Therefore, initially, a field (crop) is assigned to a time window randomly.…”

Section: Generation Of Hydrants Opening Configurationsmentioning

confidence: 99%

Generating Hydrants’ Configurations for Efficient Analysis and Management of Pressurized Irrigation Distribution Systems

Fouial

Lamaddalena

Díaz

2020

Water

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Water scarcity is a mounting problem in arid and semi-arid regions such as the Mediterranean. Therefore, smarter and more effective water management is required, especially in irrigated agriculture. One of the most challenging uncertainties in the operation of on-demand collective Pressurized Irrigation Distribution Systems (PIDSs) is to know, a priori, the number and the position of hydrants in simultaneous operation. To this end, a model was developed to generate close to reality operating hydrants configurations, with 15, 30 or 60 min time steps, by estimating the irrigation scheduling for the entire irrigation season, using climatic, crop and soil data. The model is incorporated in an integrated DSS called Decision Support for Irrigation Distribution Systems (DESIDS) and links two of its modules, namely, the irrigation demand and scheduling module and the hydraulic analysis module. The latter is used to perform two types of analyses for the performance assessment and decision-making processes. The model was used in a real case study in Italy to generate hydrants’ operation taking into consideration irrigation scheduling. The results show that during the peak period, hydrants simultaneity topped 62%. The latter created pressure deficit in some hydrants, thus reducing the volume of water supplied for irrigation by up to 87 m3 in a single hydrant during the peak demand day. The developed model proved to be an important tool for irrigation managers, as it provides vital information with great flexibility and the ability to assess and predict the operation of PIDSs at any period during the irrigation season.

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Section: Generation Of Hydrants Opening Configurationsmentioning

confidence: 99%

Generating Hydrants’ Configurations for Efficient Analysis and Management of Pressurized Irrigation Distribution Systems

Fouial

Lamaddalena

Díaz

2020

Water

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“…Several authors have reported important energy savings resulting from the application of network sectoring techniques in collective drip irrigation networks (Rodríguez Díaz et al 2009;Jiménez-Bello et al 2010;Moreno et al 2010b;Navarro Navajas et al 2012;Fernandez Garcia et al 2013;Khadra et al 2016). In the studied WUA network, the NSM and NSMMD scenarios provided important energy savings (22%) but also affected yield in a similar economic magnitude.…”

Section: Network Sectoring Irrigation Management Nsmmentioning

confidence: 99%

“…Sectoring should take into account the energy requirement of each hydrant and the electricity tariff. Several authors have developed network sectoring methodologies (Rodríguez Díaz et al 2009;Jiménez-Bello et al 2010;Moreno et al 2010b;Navarro Navajas et al 2012;Fernandez García et al 2013;Khadra et al 2016). All the cases analyzed in the literature report energy savings in excess of 20%, typically focusing on systems with drip irrigation and with strong energy dependence (groundwater).…”

Section: Introductionmentioning

confidence: 99%

“…Numerous research efforts dealing with collective pressurized networks and energy efficiency have paid attention to irrigation infrastructure, concentrating on design (pumping stations, pipelines and on-farm irrigation systems) and management (water delivery schemes, pumping station regulations) aspects (Rodríguez Díaz et al 2009 and2011;Jiménez-Bello et al 2010;Moreno et al 2010a, b;Navarro Navajas et al 2012;Fernandez García et al 2013;Khadra et al 2016). These authors reported the development of tools optimizing hydraulic operation and energy consumption or cost.…”

Section: Introductionmentioning

confidence: 99%

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A simulation tool for advanced design and management of collective sprinkler-irrigated areas: a study case

et al. 2017

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More than one million hectares have undergone irrigation modernization in Spain during this century. Irrigation modernization to pressurized systems is currently facing challenges derived from increasing electricity prices and decreasing public subsidies. The economic viability of such projects is compromised, and the number of projects is decreasing. Pressurized collective networks are commonly designed and managed using hydraulic simulation tools and probabilistic hypotheses on hydrant use. In this paper, a simulation tool is presented that widens the scope of the analysis by combining hydraulics with agronomy, agrometeorology, solid-set sprinkler irrigation and economics. The CINTEGRAL software simulates the net benefit of the seasonal operation of a collective pressurized irrigation network. The software incorporates an optimization module for the electricity contract associated to the pumping station. CINTEGRAL runs on a time step of a half-hour, and simulates the irrigation season of a variety of crops.The software was applied to analyze the economic benefit of a Water User Association (WUA) under different design and management scenarios (ondemand, network sectoring and dividing the irrigated area in separate networks). In the

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“…An accurate estimation of agricultural water is essential since it accounts for 70% of total global freshwater withdrawals and is expected to increase a further 10% by 2050 [1]. Thus, implementing wise agricultural water practices is an important task for global hydrologic cycle management.…”

Section: Introductionmentioning

confidence: 99%

On the Use of the Eddy Covariance Latent Heat Flux and Sap Flow Transpiration for the Validation of a Surface Energy Balance Model

et al. 2018

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Actual evapotranspiration is assessed via surface energy balance at an hourly rate. However, a robust estimation of daily evapotranspiration from hourly values is required. Outcomes of surface energy balance are frequently determined via measures of eddy covariance latent heat flux. Surface energy balance can be applied on images acquired at different times and spatial resolutions. In addition, hourly actual evapotranspiration needs to be integrated at a daily rate for operational uses. Questions arise whether the validation of surface energy balance models can benefit from complementary in situ measures of latent heat flux and sap flow transpiration. Here, validation was driven by image acquisition time, spatial resolution, and temporal integration. Thermal and optical images were collected with a proximity-sensing platform on an olive orchard at different acquisition times. Actual latent heat fluxes from canopy and sap flux at tree trunks were measured with a flux tower and heat dissipation probes. The latent heat fluxes were then further analyzed. A surface energy balance was applied over proximity sensing images re-sampled at different spatial resolutions with resulting latent heat fluxes compared to in situ ones. A time lag was observed and quantified between actual latent heat fluxes from canopy and sap flux at the tree trunk. Results also indicate that a pixel resolution comparable to the average canopy size was suitable for estimating the actual evapotranspiration via a single source surface energy balance model. Images should not be acquired at the beginning or the end of the diurnal period. Findings imply that sap flow transpiration can be used to measure surface energy balance at a daily rate or when images are found at an hourly rate near noon, and the existing time lag between the latent heat flux at the canopy and the sap flow at the trunk does not need to be taken into account.

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Energy and Hydraulic Performance-Based Management of Large-Scale Pressurized Irrigation Systems

Cited by 21 publications

References 21 publications

Generating Hydrants’ Configurations for Efficient Analysis and Management of Pressurized Irrigation Distribution Systems

Generating Hydrants’ Configurations for Efficient Analysis and Management of Pressurized Irrigation Distribution Systems

A simulation tool for advanced design and management of collective sprinkler-irrigated areas: a study case

On the Use of the Eddy Covariance Latent Heat Flux and Sap Flow Transpiration for the Validation of a Surface Energy Balance Model

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