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, ...
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 ...
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. ...
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 ...
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 ...
Mora Rodríguez, José de Jesús; López Jiménez, Petra Amparo; Ramos, Helena M.(International Energy and Environment Foundation, 2011)
[EN] Intrusion through leaks occurrence is a phenomenon when external fluid comes into water pipe systems.
This phenomenon can cause contamination problems in drinking pipe systems. Hence, this paper focuses
on the ...
Frijns, Jos; Cabrera Marcet, Enrique; Carrico, Nelson; Covas, Didia; Monteiro, Antonio J.; Ramos, Helena M.; Bolognesi, Andrea; Bragalli, Cristiana; Baki, Sotiria; Makropoulos, Christos(IWA Publishing, 2015)
[EN] There is significant potential for energy recovery through the use of micro-hydropower installations in water supply systems (WSS). To exploit the full potential of hydro energy in balance with the optimal hydraulic ...
Pérez-Sánchez, Modesto; Sánchez-Romero, Francisco-Javier; Ramos, Helena M.; López Jiménez, Petra Amparo(MDPI, 2016-06)
Water irrigation systems are required to provide adequate pressure levels in any sort of network. Quite frequently, this requirement is achieved by using pressure reducing valves (PRVs). Nevertheless, the possibility of ...
Coronado-Hernández, Oscar Enrique; Fuertes-Miquel, Vicente S.; Besharat, Mohsen; Ramos, Helena M.(Associacao Portuguesa dos Recursos Hidricos, 2019-12)
[EN] Water filling processes in pipes generate overpressures that must be considered so that the facilities do not fail during their operation. The filling manoeuvres with air trapped in water pipes have been studied by ...
Pérez-Sánchez, Modesto; López Jiménez, Petra Amparo; Ramos, Helena M.(Springer-Verlag, 2018)
[EN] The development of hydraulic and optimization models in water networks
analyses to improve the sustainability and efficiency through the installation of micro or
pico hydropower is swelling. Hydraulic machines involved ...