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Open AccessArticle

Optimization of the Design of Water Distribution Systems for Variable Pumping Flow Rates

1
ETSI Caminos, Canales y Puertos, Departamento de Ingeniería Civil, Hidráulica, Energía y Medio Ambiente, Universidad Politécnica de Madrid, Calle Profesor Aranguren 3, 28040 Madrid, Spain
2
Departamento de Economía Agraria y CEIGRAM, Universidad Politécnica de Madrid, 28040 Madrid, Spain
*
Author to whom correspondence should be addressed.
Water 2020, 12(2), 359; https://doi.org/10.3390/w12020359
Received: 20 December 2019 / Revised: 23 January 2020 / Accepted: 25 January 2020 / Published: 28 January 2020
(This article belongs to the Section Water Resources Management, Policy and Governance)
Water supply systems need to be designed in an efficient way, accounting for both construction costs and operational energy expenditures when pumping is required. Since water demand varies depending on the moment’s necessities, especially when it comes to agricultural purposes, water supply systems should also be designed to adequately handle this. This paper presents a straightforward design methodology that using a constant flow rate, the total cost is equivalent to that of the variable demand flow. The methodology is based on the Granados System, which is a very intuitive and practical gradient based procedure. To adapt it to seasonal demand, the concepts of Equivalent Flow Rate and Equivalent Volume are presented and applied in a simple case study. These concepts are computationally straightforward and facilitate the design process of hydraulic drives under demand variability and can be used in multiple methodologies, aside from the Granados System. The Equivalent Flow Rate and Equivalent Volume offer a solution to design procedures that require a constant flow regime, adapting them to more realistic design situations and therefore widening their practical scope. View Full-Text
Keywords: water distribution systems; optimization; design; pump operation; demand variability water distribution systems; optimization; design; pump operation; demand variability
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MDPI and ACS Style

Martin-Candilejo, A.; Santillán, D.; Iglesias, A.; Garrote, L. Optimization of the Design of Water Distribution Systems for Variable Pumping Flow Rates. Water 2020, 12, 359.

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