| publications-11 |
PEER REVIEWED ARTICLE |
No year available |
RAMOS, H.M. |
New design solutions of low power for energy production in water pipe systems |
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10.3882/j.issn.1674-2370.2009.04.007 |
Uncategorized |
Uncategorized |
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No abstract available |
212423 |
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| publications-12 |
PEER REVIEWED ARTICLE |
2010 |
RAMOS, H.M. |
Clean Power in Water Supply Systems as a Sustainable Solution: from Conceptual to Practical Analysis |
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10.2166/ws.2010.720 |
Uncategorized |
River Basins |
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Energy efficiency and renewable energy sources have drawn a greater attention by EU, in particular for climate change policies as it can substantially cut down CO2 emissions to meet EU environmental obligations. It is well established that in drinking pipe systems Pressure Reducing Valves (PRV) are used as a mean for excess energy dissipation for the purpose of pressure control. This type of solution can be adopted, as a mitigation method to control the system losses, in particular, the available overload, which must have to be dissipated to avoid leakage or rupture occurrence in the pipe system. The use of micro-hydro systems seems to provide a better approach as a sustainable solution in terms of controlling the system pressure as well as to provide a non-negligible income by producing clean energy. Computational simulations, experimental research and engineering project development are carried out to analyse and compare the hydraulic system behaviour between a PRV and a pump working as a turbine (PT). This research creates an important challenge for seasonal stabilization of the energy supply by using water supply systems, due to the stochastic nature of river-hydro resources. |
212423 |
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| publications-13 |
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Fecarotta, O. |
CFD and comparisons for a Pump as Turbine: mesh reliability and performance concerns |
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Uncategorized |
River Basins |
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No abstract available |
212423 |
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| publications-14 |
PEER REVIEWED ARTICLE |
2010 |
Costa, L.H. |
Utilização de um algoritmo genético híbrido para operação ótima de sistemas de abastecimento de água |
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10.1590/s1413-41522010000200011 |
Uncategorized |
Uncategorized |
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A operação dos Sistemas de Abastecimento de Água é realizada por profissionais que usam a sua experiência como um meio de avaliação no controle de equipamentos hidromecânicos com o objetivo de garantir o fornecimento de água à população. Geralmente, as regras operacionais utilizadas visam à garantia da continuidade do abastecimento público, sem a preocupação com a economia de energia elétrica dos motores em funcionamento. Neste trabalho, apresenta-se um algoritmo genético híbrido que permite determinar as estratégias de operações com custos energéticos reduzidos. A análise do modelo é feita em um estudo de caso real localizado na cidade de Ourém (Portugal). O novo modelo reduz consideravelmente o tempo computacional em comparação aos modelos utilizados na literatura especializada. |
212423 |
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| publications-15 |
PEER REVIEWED ARTICLE |
2011 |
Gonçalves, F. V. |
Best economical hybrid energy solution: Model development and case study of a WDS in Portugal |
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10.1016/j.enpol.2011.03.031 |
Uncategorized |
Uncategorized |
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No abstract available |
212423 |
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| publications-16 |
PEER REVIEWED ARTICLE |
2011 |
RAMOS, H.M. |
Environmentally friendly hybrid solutions to improve the energy and hydraulic efficiency in water supply systems. Energy for Sustainable Development |
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10.1016/j.esd.2011.07.009 |
Uncategorized |
Uncategorized |
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No abstract available |
212423 |
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| publications-17 |
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2012 |
RAMOS, H.M. |
Low-head energy conversion: a conceptual design and laboratory investigation of a micro-tubular hydro propeller |
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10.5402/2012/846206 |
Uncategorized |
Uncategorized |
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Low-head microhydro systems for energy production are becoming accepted because of oil crises and new advances in their design and efficiencies. As this is still a new area for development and experimentation, it is important to test and validate the optimal conditions and the hydrodynamic behaviour of such systems under different conditions. The aim of this paper is to present a turbine design validation practise, which researchers and equipment manufactures can use for the hydrodynamic behaviour analysis of new low-head turbines prior to production and application. Laboratory experimental tests and advanced CFD numerical analysis are described for the flow behaviour analysis of a new prototype microtubular propeller. Laboratory experimental results are presented and used for the evaluation of the turbine performance curves. Comparisons between experimental and CFD results are also presented. Finally, an assessment of the hydrodynamic behaviour is made for a scaled model application, using the theory of turbomachine similarity. |
212423 |
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| publications-18 |
PEER REVIEWED ARTICLE |
2010 |
Ramos, J.S. |
Multi-criterion optimization of energy management in drinking systems |
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10.2166/ws.2010.011 |
Uncategorized |
Uncategorized |
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In this study, two different energy sources that are connected to a pumped storage water supply system are analyzed: a water and a wind turbine. A water turbine can be integrated in a water supply system in high-pressure locations. Recently, new sources of energy production are being researched and applied due to the increase in the price of conventional energy sources and concerns regarding the damage to the environment caused by their pollutants. On the other hand, water supply systems have equipment that consumes a great deal of energy, such as water and wastewater pumping stations and treatment plants. Energy efficiency that is based on multi-criterion optimization of pump-storage/hydro/wind power management methodology has been developed to analyze the economic viability of a pumping drinking water system that may or may not be connected to a wind turbine or a small hydro whenever excess available head is present. |
212423 |
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| publications-19 |
PEER REVIEWED ARTICLE |
2012 |
BALDI, Franco, GALLO, Michele, MARCHETTO, Davide, FANI, Renato, MAIDA, Isabel, HORVAT, Milena, FAJON, Vesna, ŽIŽEK, Suzana, HINES, Mark E |
Seasonal mercury transformation and surficial sediment detoxification by bacteria of Marano and Grado lagoons |
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10.1016/j.ecss.2012.02.008 |
Uncategorized |
Precipitation & Ecological Systems |
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No abstract available |
212790 |
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| publications-20 |
PEER REVIEWED ARTICLE |
2012 |
ACQUAVITA, Alessandro, COVELLI, Stefano, EMILI, Andrea, BERTO, Daniela, FAGANELI, Jadran, GIANI, Michele, HORVAT, Milena, KORON, Neža, RAMPAZZO, Fede |
Mercury in the sediments of the Marano and Grado Lagoon (northern Adriatic Sea): sources, distribution and speciation |
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10.1016/j.ecss.2012.02.012 |
Uncategorized |
Uncategorized |
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No abstract available |
212790 |
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