Ponències/Comunicacions de congressos: Recent submissions
Now showing items 1-12 of 47
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Diagnostics of a hydraulic turbine failure
(2022)
Conference report
Open AccessThis paper presents the failure analysis and diagnostic of a hydraulic turbine. Shortly after a maintenance revision the thrust bearing of the turbine was destroyed when the turbine was put into operation. The damaged ... -
Characterization of the fluid damping in simplified models of pump-turbines and high head Francis runners
(IOP Publishing, 2022)
Conference report
Open AccessIn order to satisfy the power demand in the electrical grid, hydraulic turbine units frequently work under off-design operation conditions and pass through transient events. These operation conditions can lead to high ... -
Hybridization in Kaplan turbines. Wear and tear assessment
(IOP Publishing, 2022)
Conference report
Open AccessIn the current energy market, hydraulic turbines are increasingly demanded to work in Frequency containment reserve (FCR) mode to compensate the constant frequency fluctuations in the electrical grid. To do so, hydraulic ... -
Re-utilización de materiales domésticos al final de su vida útil como solución simple, sostenible y de bajo coste para la rehabilitación express de edificios antiguos y vulnerables: análisis térmico y acústico
(Universidad de Cantabria, 2022)
Conference report
Restricted access - publisher's policyEste documento tiene como objetivo investigar la posibilidad de convertir materiales domésticos al final de su vida útil (EoLHM), como ropa o embalajes, en materiales aislantes térmicos y acústicos de bajo costo para la ... -
Polyamide waste thermal and acoustic properties: experimental and numerical investigation on possible reuse for indoor comfort improvement
(2022)
Conference report
Open AccessReferring to the circular economy model, end-of-life household materials (EoLHM) such as packaging, and clothes, could be converted into building elements – for example panels - with thermal and acoustic properties. Given ... -
Experimental investigation on the dynamic response of Pelton runners
(Institute of Physics (IOP), 2019)
Conference report
Open AccessAn effective condition monitoring is essential to increase the availability of Pelton turbines and to avoid unexpected damage. The main challenge consists in determining the deformations and the stresses in the runner while ... -
On the exctitation of a submerged disk-like structure with RSI patterns
(2015)
Conference report
Restricted access - confidentiality agreementDetermining the dynamic response of submerged and confined disk-like structures is of interest in the hydraulic turbines field. Disks present similar dynamic characteristics than hydraulic turbine runners, especially in ... -
Transient Analysis of Pelton Turbine Prototypes
(2021)
Conference report
Open AccessOne of the most critical operating conditions in hydraulic turbines is the start-up transient. This may be characterized by the presence of several resonances, which increase the vibration and stress levels on the runners. ... -
A novel condition monitoring methodology based on neural network of pump-turbines with extended operating range
(2019)
Conference report
Open AccessDue to the entrance of new renewable energies, water-storage energy has to be regulated more frequently to keep the stability of power grid. Consequently, pump-turbines have to work under offdesign conditions more than ... -
Natural frequencies of rotating disk-like structures submerged viewed from the stationary frame
(2021)
Conference report
Open AccessTo understand the effect of rotation in the dynamic response of pump-turbine runners, simplified models such as disk-like structures can be used. In previous researches the natural frequencies and mode shapes of rotating ... -
Behavior of Francis turbines at part load. Field assessment in prototype: Effects on the hydraulic system.
(Institute of Physics (IOP), 2019)
Conference report
Open AccessAt present, hydropower plants play an important role because of their flexibility in the generation of electricity. Today, the required operating range of turbine units is expected to extend to deep part load. At part load ... -
Behavior of Francis turbines at part load. Field assessment in prototype: Effects on power swing.
(Institute of Physics (IOP), 2019)
Conference report
Open AccessFrancis turbines are increasingly demanded to work at part load in order to satisfy the electricity generation demand and to compensate the non-constant generation of other renewable sources such as wind or solar. At part ...
