Search results for "water distribution network"

Hydropower Potential in Water Distribution Networks: Pressure Control by PATs

2014

Pressure control is one of the main techniques to control leakages in Water Distribution Networks (WDNs) and to prevent pipe damage, improving the delivery standards of a water supply systems. Pressure reducing stations (PRSs) equipped by either pressure reducing valves or motor driven regulating valves are commonly used to dissipate excess hydraulic head in WDNs. An integrated new technical solution with economic and system flexibility benefits is presented which replaces PRSs with pumps used as turbines (PATs). Optimal PAT performance is obtained by a Variable Operating Strategy (VOS), recently developed for the design of small hydropower plants on the basis of valve time operation, and n…

Implementation of Pressure Reduction Valves in a dynamic water distribution system numerical model

2012

Analysis of the Impact of the intermittent distribution by modelling the network filling processes.

2011

Modeling of distribution network filling process during intermittent supply

2009

SELECTION OF REHABILITATION ALTERNATIVES OF WATER DISTRIBUTION SYSTEMS IN CONDITION OF LACK OF DATA BY CONCISE PERFORMANCE INDICES AND OPTIMIZATION T…

2011

Selection of rehabilitation alternatives in condition of data scarcity by concise performance indices

2011

RECUPERO ENERGETICO ALL’INTERNO DELLE RETI ACQUEDOTTISTICHE MEDIANTE MICROTURBINE IDRAULICHE

2022

Coupled Electric and Hydraulic Control of a PRS Turbine in a Real Transport Water Network

2019

Although many devices have recently been proposed for pressure regulation and energy harvesting in water distribution and transport networks, very few applications are still documented in the scientific literature. A new in-line Banki turbine with positive outflow pressure and a mobile regulating flap, named Power Recovery System (PRS), was installed and tested in a real water transport network for the regulation of pressure and flow rate. The PRS turbine was directly connected to a 55 kW asynchronous generator with variable rotational velocity, and coupled to an inverter. The start-up tests showed how automatic adjustment of the flap position and the runner velocity variation are able to c…

PUMP AS TURBINE (PAT) IN INTERMITTENT DISTRIBUTION NETWORKS

2012

A hydraulic model was performed in order to evaluate potential energy recovery resulting by the use of centrifugal pump as turbines (PAT) in the water distribution network characterized by the presence of private tanks. The model integrates the Enhanced Global Gradient Algorithm (EGGA) (Todini [1], Giustolisi et al. [2]), with a pressure driven model (Criminisi et al. [3]) that entails a more realistic representation of the influence of the private tanks filling and emptying process in the network behaviour. The model was applied to real case study: a district metered area in Palermo (Italy). Namely three different scenarios were analyzed and compared with the actual scenario (Scenario 0 - …

A COST BENEFIT ANALISYS FOR HYDROPOWER PRODUCTION IN WATER DISTRIBUTION NETWORKS BY PUMP AS TURBINE (PAT)

2013

The use of micro hydroelectric plant in urban pipe networks, based on the combination of a PAT, two regulating valves and two pressure meters, is proposed along with simple automation rules. Its economic benefit is tested on a small pipe network, where the network geometry, as well as the demand coefficient variation in time and space have been inferred from previously collected data and existing analysis. A similar analysis has been also carried out for different scenarios, where the reduction of pipe installation cost due to a diameter reduction is compared with the increased benefit in energy production. The case study shows that a small increment of the pipe installation cost, with resp…