6 edition of Performance Analysis of On-Demand Pressurized Irrigation Systems found in the catalog.
by Food & Agriculture Organization of the UN (FA
Written in English
Fao Irrigation and Drainage Paper
|The Physical Object|
|Number of Pages||150|
On-farm irrigation networks are designed for optimum performance at a specific upstream pressure head. In pressurized water distribution systems operating on demand, the upstream pressure head of the on-farm network can be subject to high and continuous fluctuations depending on the number of the hydrants being simultaneously opened. In this paper, a methodology combining network design and Cited by: At lower hydrant pressures, to apply the same amount of water, irrigation time must be extended by 17 and 95% for pressure heads of 20 and 12 m, respectively. These approaches described have great utility to ensure adequate irrigation management when water is delivered by pressurized on-demand systems.
Performance analysis of on-demand pressurized irrigation systems  Lamaddalena, Nicola. Rome: Food and Agriculture Organization of the United Nations,  N. Lamaddalena, Integrated simulation model for design and performance analysis of on-demand pressurized irrigation systems. Ph.D. Thesis. Instituto Superior de Agronomia, Universidade Te´cnica de Lisboa,  N. Lamaddalena, and L.S. Pereira, Performance analysis of on-demand pressurised irrigation systems. In: Pereira, L.S,
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Pressurized irrigation systems working on demand were the object of considerable attention in the sixties and seventies and a considerable number of them were designed and implemented in the Mediterranean basin mainly but also in other parts of the world. The present publication has as its main objective the development of a computer tool that permits the diagnosis of performance of.
The publication is intended to provide new methods for the design and analysis of performance of pressurized irrigation systems and should be of particular to district managers, irrigation. The main objective of this publication is to analyse the performance of pressurised irrigation systems operating ondemand also under other conditions and to provide revised criteria for the design of such irrigation networks.
For this purpose, new approaches and a. With the strong competition that is arising for water resources the modernisation of irrigation systems is becoming a critical issue.
One of the alternatives to modernisation is the use of pressurised systems to replace part of the existing networks. This publication analyses the performance of pressurised irrigation systems operating on demand, and provides revised criteria for the design of.
Performance analysis of on-demand pressurized irrigation systems. Rome: Food and Agriculture Organization of the United Nations, (OCoLC) Online version: Lamaddalena, Nicola. Performance analysis of on-demand pressurized irrigation systems.
Rome: Food and Agriculture Organization of the United Nations, (OCoLC) Lamaddalena N. & Pereira L.S. Performance analysis of on-demand pressurized irrigation systems. In: L.S. Pereira & J.W. Gowing (Eds) Environment and Water: Innovative Issues in Irrigation and Drainage (pp –).
E & FN Spon, London. Google ScholarCited by: Performance analysis of on-demand pressurized irrigation systems (FAO Irrigation and Performance Analysis of On-Demand Pressurized Irrigation Systems book Papers) [Food and Agriculture Organization of the United Nations] on *FREE* shipping on qualifying offers.
The main objective of this publication is to analyse the performance of pressurized irrigation systems operating on-demand (also under other conditions) and to provide revised. This bulletin presents: on-demand irrigation systems and data necessary for their design; network layout; computation of flows for on-demand irrigation systems; pipe-size calculation; analysis of performance; and management issues.
Validation of the first Clément model, pipe materials and design considerations, and examples of input and output files are presented in the by: A methodology to assess performance of pressurized irrigation distribution networks is presented, which is based on generation of flow configurations from simulated delivery scenarios, and on subsequent analysis of network operation and delivery achievements.
The rationale of the methodology entails simulating the peak-demand flow configurations in the pipe network through a deterministic Cited by: 4. The ICARE and AKLA models were applied to the pressurized irrigation network of Lucefecit, south of Portugal, serving ha and operating pumping station (EE1) was designed for a discharge Q o = l s −1 and an upstream piezometric elevation Z o = m a.s.l.
Water is pumped directly into the pipe system (high lift pumps) and two hydro-pneumatic tanks (Smith, ) are Cited by: obligate to deal with pressurized irrigation systems within a system approach (Beyribey & Balaban ). There is a tendency to pressurized irrigation systems in Turkey nowadays.
Especially, the design and performance analysis of on-demand pressurized irrigation systems have a great importance in this tendency.
Recently, many computer simulation. Pressure-driven modeling for performance analysis of irrigation systems operating on demand Article in Agricultural Water Management 90() February with 41 Reads How we measure 'reads'.
The main objective of this publication is to analyse the performance of pressurized irrigation systems operating on-demand (also under other conditions) and to provide revised criteria for the design of such irrigation networks.
For this purpose, new approaches and a. performance analysis of on‐demand pressurized irrigation network designed with linear and fuzzy linear programming † P.
Kanakis Faculty of Agriculture, Department of Hydraulics, Soil Science and Agricultural Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece. Performance analysis of on-demand pressurized irrigation networks – Case study in Greece P.
Stamouli1*, N. Dercas2 and E. Baltas1 1 Laboratory of Hydrology and Water Resources Utilization, School of Civil Engineering, National Technical University οf Athens, 5 Iroon Polytechniou St., Zografou Athens, Greece.
The perturbation in hydraulic networks for irrigation systems is often created when sudden changes in flow rates occur in the pipes. This is essentially due to the manipulation of hydrants and depends mainly on the gate closure time.
Such a perturbation may lead to a significant pressure variation that may cause a pipe breakage. In a recent study, computer code simulating unsteady flow in Cited by: 1.
Performance analysis of on-demand pressurized irrigation systems 17 p = rT 1 Rd qsAT r T t' T' t' = = (2) thus, p = q A r Rd s (3) Therefore, for a population of R homogeneous hydrants, the probability of finding one hydrant open is p, while (1 - p) is the probability to find it Size: KB.
Background models on performance analysis in irrigation systems. On-demand pressurized irrigation systems allow farmers to adopt the most appropriate crop irrigation schedules. However, sizing these systems requires careful selection of design discharges and pressure regulation (Labye et al., ).Cited by: Lamaddalena, Nicola & Pereira, Luis Santos, "Pressure-driven modeling for performance analysis of irrigation systems operating on demand," Agricultural Water Management, Elsevier, vol.
90(), pagesMay. Full references (including those not matched with items on IDEAS). Lamaddalena, N.; Sagardoy, J.A. Performance Analysis of On-Demand Pressurized Irrigation Systems; FAO Irrigation and Drainage Paper 59; Food and Agriculture Organization of the United Nations: Rome, Italy, [Google Scholar] Khadra, R.; Lamaddalena, N.
Development of a decision support system for irrigation systems by: 1. Keywords: collective irrigation networks, performance analysis, friction loss, on-demand networks, sensitivity analysis, indexed characteristic curves 1.
INTRODUCTION Large-scale pressurized irrigation networks operating on-demand have been widely used in the distribution of irrigation water over the last decades. With on-demand systems, the.Downloadable (with restrictions)!
Different groups of hydrants or configurations operate simultaneously in on-demand pressurized irrigation systems, generating different flow regimes. The varieties of flow regimes cause a variability in hydrant pressure and consequently an adequate analysis of the hydraulic performance of the system is needed for better operation and adequate management.Chapter 6 Irrigation System Design Part Irrigation Guide (vi-NEHIG Amend.
NJ1, 06/) NJ Fixed Systems include solid set (portable or permanent pipeline). There are enough laterals and sprinklers that none have to be moved to complete an irrigation. In New Jersey this method is used predominantly on blueberries.