Implementation of Hydraulic Modelling for Water-Loss Reduction Through Pressure Management

Karadirek, I. Ethem; Kara, Selami; Yılmaz, Gökhan; Muhammetoğlu, Ayşe; Muhammetoğlu, Habib

doi:10.1007/s11269-012-0032-2

Cited by 97 publications

(51 citation statements)

References 7 publications

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“…The H-W equation in SI units is usually given as the following general form: Since the value of Friction coefficient varies as so many practicing engineers usually hesitate to use the generalized D-W equation and prefer simpler empirical power form flow resistance equations such as the H-W equation [26]. Although the range of applicability of H-W equation is limited and not dimensionally homogeneous yet it is very popular among users because of its simplicity in hydraulic computations [17,4].…”

Section: Hazen-williams Equationmentioning

confidence: 99%

“…We conclude that the corrected values of CHW coefficient, the maximum error generally does not exceed7, [26] and for the typical fixed value of CHW =135 the maximum error varies from +12% for large diameters to -19% for small diameters [13]. In a recent study, an experimental investigation [18] has been presented to determine the proper values of the CHW coefficient for commonly used polyethylene plain pipes with different diameters.…”

Section: Hazen-williams Equationmentioning

confidence: 99%

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Estimation of hazen williams’s constant for a residential water distribution network; GMDH and PSO approach

Tyagi¹,

Majumder²,

Kant³

et al. 2018

IJET

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Hazen-William equation is used to estimate the Fluid flow in closed channel. There are various models for estimation of pipe flow, however the accuracy and reliability of models varies due to the empirical nature of the Hazen-William constant .the applicability of model also become constrained due to the dependency of constant on pipe material, dimension and flow potential. Different type of pipeline arranged in different Networks will require different value of the constant and is generally retrieved from the data collected for the pipe network. The case dependency of the model has makes the model erroneous and often subjective that is why the present study tries to propose a model which can be used for any network where the output will depend upon the inputs. In this aspect the soft computation techniques: -GMDH and PSO was utilized in an unconventional way to establish the value of CHW =f (H, L, V, D). According to result the GMDH becomes the better model than the PSO where the accuracy is about 76.315%.

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Section: Hazen-williams Equationmentioning

confidence: 99%

Section: Hazen-williams Equationmentioning

confidence: 99%

Estimation of hazen williams’s constant for a residential water distribution network; GMDH and PSO approach

Tyagi¹,

Majumder²,

Kant³

et al. 2018

IJET

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show abstract

“…Energy production in water supply systems has been realized on condition that the available hydraulic power is considerable and fairly constant [6] and the dissipation nodes, in an urban WDN, frequently present a large variability in flow rate and water head [7]. Ideal locations of a PAT system in a WDN depend on several parameters like daily flow rate pattern, water head, geometry of a WDN, and the presence of district metered areas (DMAs).…”

Section: Introductionmentioning

confidence: 99%

Innovative mini-hydro device for the recharge of electric vehicles in urban areas

Balacco

Binetti

Caporaletti

et al. 2018

Int J Energy Environ Eng

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The aim of the present study is to evaluate the technical and economic feasibility of supplying recharge points for Electric Vehicles converting water pressure in excess into electric energy from a water distribution network. A real water distribution network was analyzed, by designing a power station consisting of three components: a Pump-as-Turbine, an ad hoc generator, and a control system. The last one controls the flow rate trend at the inlet of the Pump-as-Turbine to regulate the rotational speed corresponding to the optimal range of efficiency. Energy produced permits to supply a recharging point for Electric Vehicles on site with the aim to convert water pressure generally dissipated and, consequently, lost into a renewable energy and to reduce power grid congestion. The economic analysis confirms the convenience of the proposed power station, and overall, a comparable cost with pressure reduction valve devices normally adopted to control pressure pattern and leakages of a water distribution network.

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“…El diseño de redes de abastecimiento sectorizadas adquiere relevancia en Inglaterra (Wrc/ WSA/WCA, 1994) y se ha ido extendiendo a diferentes países (Karadirek, Kara, Yilmaz, Muhammetoglu, & Muhammetoglu, 2012). La implantación de sectores en las redes de distribución, denominados en la bibliografía como "district meter areas" (DMA), surge con el principal objetivo de permitir una medición más exhaustiva de las condiciones de la red, de los flujos y consumos, para un mayor control de la misma.…”

Section: Introductionunclassified

Metodología para caracterizar la eficiencia de una red de distribución sectorizada

Gómez-Martínez

Cubillo-González

Martín-Carrasco

2017

Tecnol. cienc. agua

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ResumenGómez-Martínez, P., Cubillo-González, F., & Martín-Carrasco, F. J. (julio-agosto, 2017). Metodología para caracterizar la eficiencia de una red de distribución sectorizada. Tecnología y Ciencias del Agua, 8(4), 57-77.Mejorar la eficiencia en las redes de distribución de agua potable, garantizando un nivel de servicio predefinido, es uno de los objetivos principales para los operadores del abastecimiento. Con el fin de mejorar la gestión y el control de las redes existentes se ha ido extendiendo la sectorización, que divide la red en zonas monitorizadas y aisladas mediante válvulas frontera. Ante la diversidad de criterios para el diseño de los sectores, se plantea una metodología de valoración de redes sectorizadas, que permite seleccionar la configuración de sector más eficiente en términos de vulnerabilidad del servicio y costes (también entendido como costos) asociados. La vulnerabilidad se evalúa con una función multiobjetivo con base en tres de los principales objetivos vinculados con el servicio que se persiguen con la sectorización: continuidad del servicio, calidad del agua y cumplimiento de un régimen de presiones adecuado. Se definen una serie de indicadores de cuantificación de estos objetivos, que son normalizados y combinados con referencia a la red de estudio. Para valorar la eficiencia de cada solución, se analizan los indicadores junto con los costes de implantación e instrumentación, energéticos, de operación y mantenimiento para cada alternativa mediante un análisis de Pareto. El análisis de vulnerabilidad permite identificar los sectores donde priorizar las actuaciones en redes existentes; el análisis de eficiencia permite seleccionar la mejor opción entre las distintas alternativas y el diseño de nuevos ámbitos de una red sectorizada. La metodología se ha aplicado en 494 sectores de la red Canal de Isabel II, en Madrid, España.Palabras clave: red de distribución sectorizada, indicadores, eficiencia, vulnerabilidad del servicio, DMA, nivel de servicio. Gómez-Martínez, P., Cubillo-González, F., & Martín-Carrasco, F.J. (July-August, 2017

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Implementation of Hydraulic Modelling for Water-Loss Reduction Through Pressure Management

Cited by 97 publications

References 7 publications

Estimation of hazen williams’s constant for a residential water distribution network; GMDH and PSO approach

Estimation of hazen williams’s constant for a residential water distribution network; GMDH and PSO approach

Innovative mini-hydro device for the recharge of electric vehicles in urban areas

Metodología para caracterizar la eficiencia de una red de distribución sectorizada

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