Generalisation of supply energy efficiency in irrigation distribution networks

Abadia, Ricardo; Vera, J.; Rocamora, Carmen; Puerto, H.

doi:10.1016/j.biosystemseng.2018.09.010

Cited by 9 publications

(6 citation statements)

References 17 publications

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“…It may likewise result from the system's physical elements, such as the valve or the pipefittings. Under level pipeline conditions, these pressure losses are lower, when compared to uneven pipes, so head losses can be increased (Abadía et al, 2018). Thus, designers must pay close attention when dimensioning projects with small diameters so that the velocity does not become high, which would cause greater head losses.…”

Section: Resultsmentioning

confidence: 99%

“…Under level pipeline conditions, these pressure losses are lower, when compared to uneven pipes, so F I G U R E 2 Taylor diagram to analyse the efficiency of the friction factor estimates by the method of Blasius and Adapted Blasius, taking as a reference the model of Offor & Alabi (2016). RMSE, root mean square error head losses can be increased (Abadía et al, 2018). Thus, designers must pay close attention when dimensioning projects with small diameters so that the velocity does not become high, which would cause greater head losses.…”

Section: Modelling the Darcy-weisbach Friction Factormentioning

confidence: 99%

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Modelling the Darcy–Weisbach friction factor and the energy gradient of the lateral line*

Jardim

Silva

et al. 2021

Irrigation and Drainage

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The objective was to adjust explicit mathematical models to determine the friction factor ( f ). Besides, an adaptation of the Blasius model is presented and an application of the Darcy-Weisbach equation to estimate the energy loss along the lateral line for four types of microsprinklers. f was determined by the model of Offor and Alabi and the model of Blasius for velocities between 0.5 to 3.0 m s À1 and internal pipe diameters of 0.0130, 0.0161, 0.0206, 0.0270, 0.0288, and 0.0368 m. The friction factor determined by Offor and Alabi was associated with the pipe diameters utilizing regression, and based on that an adaptation to the Blasius model was proposed. From the results of f, the energy and flow gradient along the lateral line for four NaanDanJain microsprinklers was simulated. The models of Offor and Alabi, Blasius, and Adapted Blasius showed excellent precision in determining f. The results of unit head loss, determined by the three mathematical models, showed dispersion close to zero among the pairs, showing a high correlation between the models (R 2 = 0.99).The Blasius equation is the most suitable to be inserted into the Darcy-Weisbach model to determine the maximum length of the lateral line.

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Section: Resultsmentioning

confidence: 99%

Section: Modelling the Darcy-weisbach Friction Factormentioning

confidence: 99%

Modelling the Darcy–Weisbach friction factor and the energy gradient of the lateral line*

Jardim

Silva

et al. 2021

Irrigation and Drainage

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“…Another example under this heading is Tsakmakis et al [ 99 ], who demonstrated that different irrigation technologies could reduce the water footprint of cotton in a plantation in northern Greece by up to 5% using drip irrigation instead of sprinkler irrigation, and by up to 12% using deficit irrigation instead of full irrigation. Within the water–energy nexus, Abadía et al [ 100 ] propose to assess the performance of the water distribution network through the comparison of energy audits, identifying the weaknesses of the network and taking actions accordingly to improve its efficiency. Another option would be to redistribute crops, helping to improve drought resilience through crop diversification and rotation, while optimising the spatial distribution of local cropping patterns.…”

Section: Innovating Practices In Wef Nexus In the Agri-food Sectormentioning

confidence: 99%

Water–Energy–Food Nexus in the Agri-Food Sector: Research Trends and Innovating Practices

Correa-Porcel

Piedra‐Muñoz

Gómez

2021

IJERPH

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Natural resources are becoming scarcer and, together with the growth of the population, a widespread situation of overexploitation is inevitable that has become the biggest challenge for today’s world. In this context, the agri-food sector has a considerable environmental impact in terms of water and energy consumption. For about two decades, the Water–Energy–Food Nexus (WEF) Nexus has been trying to address this problem, focusing on efficient interrelationships among these dimensions. The objective of this work is to analyse the evolution of research on WEF Nexus in the agri-food sector and its development in scientific databases. For that purpose, a bibliometric study was carried out with publications obtained from the Scopus database, examining the main journals, authors, institutions, countries, subject areas, funding sponsors, and keywords. Moreover, a final section is specifically dedicated to the agri-food innovations in WEF Nexus in order to explore innovative aspects to effectively overcome technical barriers that hinder a real implementation of the Nexus approach. The results show that, over the past decade, Nexus research in the agri-food sector has been growing exponentially. The top country in this field is USA, the most studied area is environmental science, and the most relevant keywords are “energy use”, “water budget”, “food security”, “sustainable development”, and “water resources”.

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“…Following this successful approach, a similar indicators methodology was developed to assess the energy use efficiency of pressurized irrigation schemes [32][33][34][35]. Córcoles et al [36] used the performance indicators defined by IPTRID [10], and proposed new production and energy related indicators to a benchmarking exercise with seven irrigation communities in Castilla-La Mancha (Spain) during three irrigation seasons.…”

Section: Introductionmentioning

confidence: 99%

Orchard Level Assessment of Irrigation Performance and Water Productivity of an Irrigation Community in Eastern Spain

Puerto

Mora²,

Merino

et al. 2021

Agronomy

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Over the last three decades, a great investment effort has been made in the modernization of irrigation in the Valencian Community (Spain). The initial change from distribution networks to pressurized ones and the shift towards drip irrigation systems was followed by improvements in irrigation scheduling, based on agrometeorological data, soil water content sensors, and remote sensing. These improvements are considered adequate for increasing irrigation water use efficiency, but it is difficult to find systematic measurements to assess its impacts on irrigation adequacy along with irrigation productivity in fruit orchards. This work presents the results of a four year assessment of irrigation water and energy use efficiency along with water productivity of a recently established irrigation community in the province of Valencia (Spain). The study was carried out at the orchard level and focused on two fruit crops: persimmon and peach trees. Six irrigation performance indicators, relative water supply (RWS), relative irrigation supply (RIS), yield performance (Yp), global water productivity (WPoverall), output per unit irrigation water (OUI), and the percent of nitrogen fertilization obtained by irrigation water, were defined and calculated for years 2017 to 2020 in 104 persimmon and peach orchards. The results showed that most of the farmers irrigated below the crop water requirements, showing RWS and RIS values less than 1, and there was great variability among farmers, especially in WPoverall and OUI indicators.

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Generalisation of supply energy efficiency in irrigation distribution networks

Cited by 9 publications

References 17 publications

Modelling the Darcy–Weisbach friction factor and the energy gradient of the lateral line*

Modelling the Darcy–Weisbach friction factor and the energy gradient of the lateral line*

Water–Energy–Food Nexus in the Agri-Food Sector: Research Trends and Innovating Practices

Orchard Level Assessment of Irrigation Performance and Water Productivity of an Irrigation Community in Eastern Spain

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