Mora Rodríguez, José de Jesús; Delgado Galván, Xitlali Virginia; Ramos, Helena M.; López Jiménez, Petra Amparo(Taylor & Francis, 2014-01-02)
Most leak management methods are focused on quantifying water losses, directly related to energy and resource waste. In this research work, a comprehensive review on relationship and modelling between pipe leaks, materials, ...
Bonilla-Correa, Dalia M.; Coronado-Hernández, Oscar Enrique; Fuertes-Miquel, Vicente S.; Besharat, Mohsen; Ramos, Helena M.(MDPI AG, 2023-04)
[EN] The estimation of thermodynamic behavior during filling processes with entrapped air in water pipelines is a complex task as it requires solving a system of algebraic-differential equations. A lot of different numerical ...
Besharat, Mohsen; Coronado-Hernández, Oscar Enrique; Fuertes-Miquel, Vicente S.; Viseu, Maria Teresa; Ramos, Helena M.(Taylor & Francis, 2018-11-14)
[EN] The prediction of the pressure inside the air pocket in water pipelines has been the topic for a lot of research works. Several aspects in this field have been discussed, such as the filling and the emptying procedures. ...
Pérez Sánchez, Modesto; Sánchez Romero, Francisco Javier; López Jiménez, Petra Amparo; Ramos, Helena M.(Editorial Universitat Politècnica de València, 2020-09-04)
La mejora de la gestión en los sistemas de distribución implica el desarrollo de estrategias y aplicación de tecnologías que permitan aumentar la sostenibilidad de los mismos, mediante el incremento de la eficiencia ...
Pérez-Sánchez, Modesto; Sánchez-Romero, Francisco-Javier; Ramos, Helena M.; López Jiménez, Petra Amparo(Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria, 2017)
[EN] The usefulness of models depends on their validation in a calibration process, ensuring that simulated flows and pressure values in any line are really occurring and, therefore, becoming a powerful decision tool for ...
Ramos, Helena M.; Simão, Mariana; Pérez-Sánchez, Modesto; Fernandes, João F.P.; Costa Branco, Paulo J.; López Jiménez, Petra Amparo(Associação Portuguesa de Engenharia Sanitária e Ambiental (APESB), 2020)
[PT] A crescente crise energética e o consumo excessivo de recursos levantam a
preocupação de encontrar novas fontes alternativas de energia, viabilizando novos
métodos de produção e/ou tornando mais eficientes os que já ...
Pérez-Sánchez, Modesto; Simao, Mariana; López Jiménez, Petra Amparo; Ramos, Helena M.(MDPI AG, 2017)
[EN] Analysis of a PAT modeling is presented for application in water pipe systems as an interesting and promising energy converter to improve the system energy efficiency. The study is focused on the use of a Computational ...
Besharat, Mohsen; Coronado-Hernández, Oscar Enrique; Fuertes-Miquel, Vicente S.; Viseu, Maria Teresa; Ramos, Helena M.(Taylor & Francis, 2019-08-06)
[EN] The occurrence of sub-atmospheric pressure in the drainage of pipelines containing an air pocket has been known as a major cause of several
serious problems. Accordingly, some system malfunction and pipe buckling ...
Ramos, Helena M.; Fuertes-Miquel, Vicente S.; Tasca, Elias; Coronado-Hernández, Oscar E.; Besharat, Mohsen; Zhou, Ling; Karney, Bryan(MDPI AG, 2022-08)
[EN] The risks associated with unsteady two-phase flows in pressurized pipe systems must be considered both in system design and operation. To this end, this paper summarizes experimental tests and numerical analyses that ...
Pérez-Sánchez, Modesto; Ferreira, A.R.; López Jiménez, Petra Amparo; Ramos, Helena M.(Taylor & Francis, 2018)
[EN] Water distribution networks (WDNs) appear as a new opportunity to generate clean energy using pumps working as turbines (PATs) instead of pressure reduction valves (PRVs). This research presents a strategy for maximizing ...
Coronado-Hernández, Oscar E.; Besharat, Mohsen; Fuertes-Miquel, Vicente S.; Ramos, Helena M.(MDPI AG, 2019-08-31)
[EN] The filling process in water pipelines produces pressure surges caused by the compression
of air pockets. In this sense, air valves should be appropriately designed to expel sufficient air to
avoid pipeline failure. ...
Gonzalez-Alvarez, Alvaro; Coronado-Hernández, Oscar Enrique; Fuertes-Miquel, Vicente S.; Ramos, Helena M.(MDPI AG, 2018)
[EN] The 24-h maximum rainfall (P24h-max) observations recorded at the synoptic weather station of Rafael Núñez airport (Cartagena de Indias, Colombia) were analyzed, and a linear increasing trend over time was identified. ...
Aguirre-Mendoza, Andrés M.; Paternina-Verona, Duban A.; Oyuela, Sebastián; Coronado-Hernández, Oscar E.; Besharat, Mohsen; Fuertes-Miquel, Vicente S.; Iglesias Rey, Pedro Luís; Ramos, Helena M.(MDPI AG, 2022-03)
[EN] The sizing of air valves during the air expulsion phase in rapid filling processes is crucial for design purposes. Mathematical models have been developed to simulate the behaviour of air valves during filling processes ...
Capelo, Bernardo; Pérez-Sánchez, Modesto; Fernandes, Joao F. P.; Ramos, Helena M.; López Jiménez, Petra Amparo; Costa Branco, P. J.(Elsevier, 2017-12-15)
[EN] The use of pumps working as turbines (PATs) connected to the electric system, in the replacement of pressure reduction valves to reduce the excessive pressure in water distribution networks, have been studied for the ...
Madeira, Filipe C.; Fernandes, Joao F. P.; Pérez-Sánchez, Modesto; López Jiménez, Petra Amparo; Ramos, Helena M.; Costa Branco, P. J.(MDPI AG, 2020-09-01)
[EN] The use of pumps working as turbines (PATs) is a sustainable technical measure that contributes to the improvement of energy efficiency in water systems. However, its performance analysis in off-grid recovery systems ...
Pérez-Sánchez, Modesto; Sánchez-Romero, Francisco-Javier; Ramos, Helena M.; López Jiménez, Petra Amparo(MDPI AG, 2017-02)
[EN] Analyses of possible synergies between energy recovery and water management are essential for achieving sustainable improvements in the performance of irrigation water networks. Improving the energy efficiency of water ...
Mora Rodríguez, Jesús; Ramos, Helena M.; López Jiménez, Petra Amparo(Instituto Mexicano de Tecnologia del Agua, 2013)
[ES] La intrusión patógena es un fenómeno que se presenta en los sistemas de distribución
de agua potable, provocando la disminución de la calidad del agua distribuida
cuando los fluidos (contaminados) circundantes a las ...
Coronado-Hernández, Oscar Enrique; Vicente S. Fuertes-Miquel; Besharat, Mohsen; Ramos, Helena M.(MDPI, 2017-02)
The emptying procedure is a common operation that engineers have to face in pipelines.
This generates subatmospheric pressure caused by the expansion of air pockets, which can produce
the collapse of the system depending ...
Simao, M; Pérez-Sánchez, Modesto; Carraveta, Armando; Ramos, Helena M.(MDPI AG, 2019)
[EN] Micro-hydro systems can be used as a promising new source of renewable energy
generation, requiring a low investment cost of hydraulic, mechanical, and electrical equipment.
The improvement of the water management ...
Pérez-Sánchez, Modesto; Sánchez-Romero, Francisco-Javier; Ramos, Helena M.; López Jiménez, Petra Amparo(MDPI AG, 2020-02)
[EN] The use of pumps working as turbines (PATs) to improve the energy efficiency of water networks has been studied in the last years. This recovery system is justified due to a low investment contrasting with the capacity ...