Enviaments recents

  • Detection and analysis of part load and full load instabilities in a real Francis turbine prototype 

    Presas Batlló, Alexandre; Valentín Ruiz, David; Egusquiza Estévez, Eduard; Valero Ferrando, Ma. del Carmen (Institute of Physics (IOP), 2017)
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    Francis turbines operate in many cases out of its best effici ency point, in order to regulate their output power according to the instantaneous ener gy demand of the grid. Therefore, it is of paramount importance to analyse ...
  • Overview of the experimental tests in prototype 

    Egusquiza Estévez, Eduard; Valentín Ruiz, David; Presas Batlló, Alexandre; Valero Ferrando, Ma. del Carmen (Institute of Physics (IOP), 2017)
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    Experimental tests in prototype are necessary to understand the dynamic behaviour of the machine during different operating points. Hydraulic phenomena as well as its effect on the structure need to be studied in o rder ...
  • Dynamic response of the MICA runner. Experiment and simulation 

    Valentín Ruiz, David; Presas Batlló, Alexandre; Egusquiza Estévez, Eduard; Valero Ferrando, Ma. del Carmen; Bossio, Matias (Institute of Physics (IOP), 2017)
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    Studying the dynamic response of Francis turbine runners is of paramount importance in order to avoid resonance problems during operating conditions. For this purpose, the natural frequencies as well as their associated ...
  • Condition monitoring of a prototype turbine. Description of the system and main results 

    Valero Ferrando, Ma. del Carmen; Egusquiza Estévez, Eduard; Presas Batlló, Alexandre; Valentín Ruiz, David; Egusquiza Montagut, Mònica; Bossio, Matias (Institute of Physics (IOP), 2017)
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    The fast change in new renewable energy is affecting directly the required operating range of hydropower plants. According to the present demand of electricity, it is necessary to generate different levels of power. Because ...
  • Hydraulic components fatigue assessment based on real-life load histories 

    Roquet Fernandez de Aramburo, Pere; Perez, Juan José; Codina Macià, Esteban (INMA Bucharest, 2017)
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    Accés restringit per política de l'editorial
    Many safety-critical hydraulic components in agricultural and other off-road mobile machinery experience static as well as time-varying loads, and obviously they undergo the latter during a major portion of their service ...
  • New high sensitivity MEMS sensor for indirect pressure measurement 

    Ruggeri, Massimiliano; Massarotti, Giorgio Paolo; Codina Macià, Esteban (The Japan Fluid Power System Society, 2017)
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    Sensorization of modern electro-hydraulic systems is one of the key technologies for system observability and controllability. Increasing needs for closed loop controls, high precision, power control and energy monitoring, ...
  • Hydrostatic steering system and energy saving evaluation in idle regime 

    Massarotti, Giorgio Paolo; MARANI, Pietro; Ruggeri, Massimiliano; Codina Macià, Esteban (The Japan Fluid Power System Society, 2017)
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    The main goal of modern steering systems is to ensure the feeling of control whilst keeping an high safety level since steering is one of the most critical function of a mobile machine. In manifold mobile machines the ...
  • Advanced condition monitoring of Pelton turbines 

    Egusquiza Montagut, Mònica; Valero Ferrando, Ma. del Carmen; Presas Batlló, Alexandre; Valentín Ruiz, David; Bossio, Matias; Egusquiza Estévez, Eduard (2017)
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    The ability of hydropower to adapt the electricity generation to the demand is necessary to integrate wind and solar energy to the grid. Nowadays hydropower turbines are required to work under harsher operating conditions ...
  • From Paris to 2C? From the global to the country 2C references: Iran case study 

    Alcaraz Sendra, Olga; Xercavins, Josep (2017)
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  • Mediterranean 2C reference scenario 

    Xercavins, Josep; Alcaraz Sendra, Olga (2017)
    Comunicació de congrés
    Accés obert
  • Experimental study of the dynamic response of partially filled pipes focused on natural frequencies and mode shapes 

    De La Torre, Oscar; Escaler Puigoriol, Francesc Xavier; Goggins, Jamie (American Society of Mechanical Engineers (ASME), 2017)
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    The presence of air in piping systems is a major concern in the industry. Problems like flow disruption, reduction of hydraulic machinery efficiencies or a significant drop in pipe capacity are many times related to this ...
  • Numerical modelling of the cooling system at alba synchrotron radiation facility to understand its performance 

    Escaler Puigoriol, Francesc Xavier; Prieto Moline, María Montserrat; Quispe Flores, Marcos; Kjeldsen, Morten; De La Torre, Oscar (American Society of Mechanical Engineers (ASME), 2017)
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    The ALBA Synchrotron Light Source in Barcelona (Spain) requires a reliable, stable and adequate cooling system for its optimal operation. The current design with four long and intricate consumption lines with a ring type ...

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