Listar Departament: Enginyeria de Sistemes Industrials i Disseny por fecha de publicación

Mostrando ítems 141-160 de 588

    • openAccess   A new approach to optimize the energy efficiency of CO2 transcritical refrigeration plants 

      Peñarrocha-Alós, Ignacio; Llopis, Rodrigo; Tárrega Ruiz, Luis; Sánchez García-Vacas, Daniel; Cabello López, Ramón Elsevier (2014-06)
      This paper proposes a model-free real-time optimization and control strategy for CO2 transcritical refrigeration plants that assures covering the cooling demand and continuous tracking of conditions for maximum efficiency. ...

    • closedAccess   Femtosecond laser micromachining with extended depth of focus by using diffractive lenses 

      Torres Peiró, Salvador; González Ausejo, Jennifer; Mendoza-Yero, Omel; Mínguez-Vega, Gladys; Lancis, Jesús Elsevier (2014-06-01)
      We show that a simple diffraction focusing element can alleviate mechanical tolerances in ultrafast laser microprocessing. In particular, we experimentally demonstrate that, in comparison with a conventional refractive ...

    • openAccess   Bridging Silicon Nanoparticles and Thermoelectrics: Phenylacetylene Functionalization 

      Ashby, Shane P.; Thomas, Jason A.; García-Cañadas, Jorge; Min, Gao; Corps, Jack; Powel, Anthony W.; Xu, Hualong; Shen, Wei; Chao, Yimin Royal Society of Chemistry (2014-06-26)
      Silicon is a promising alternative to current thermoelectric materials (Bi2Te3). Silicon nanoparticle based materials show especially low thermal conductivities due to their high number of interfaces, which increases the ...

    • openAccess   Characterization of halloysite-water nanofluid for heat transfer applications 

      Alberola-Borràs, Jaume-Adrià; Mondragon, Rosa; Juliá Bolívar, José Enrique; Hernandez, Leonor; Cabedo, Luis Elsevier (2014-07-04)
      Nanofluids based on water with halloysite (Hal) nanotubes were prepared and characterized in order to evaluate its suitability to be used as a heat transfer fluid. A characterization of the Hal powder nanoparticles was ...

    • closedAccess   Adhesion enhancement of powder coatings on galvanised steel by addition of organo-modified silica particles 

      Cabedo, Luis; Suay, Julio; Puig Brugal, Montserrat; Gracenea Zapirain, José Javier; Jiménez Morales, Antonia; Gamez-Perez, Jose Elsevier (2014-08)
      The addition of organo-modified silica particles (OSP) to organic monolayer coatings has been investigated as an alternative to the use of primers or surface pretreatments in galvanised steel substrates. A commercial ...

    • openAccess   Model of Aeronautical Ground Lighting System Transformers 

      Vidal Lombarte, Daniel; Monjo, Lluís; Sainz, Luis; Pedra Durán, Joaquín Institution of Engineering and Technology (IET) (2014-09)
      Aeronautical ground lighting (AGL) systems provide visual reference to aircraft during airport operations. In AGL systems, constant current regulators feed a series circuit composed of luminaires supplied through ...

    • openAccess   Performance of NiCrAlY Coatings Deposited by Oxyfuel Thermal Spraying in High Temperature Chlorine Environment 

      Habib Ameen, Kudama; Damra, M. S.; Carpio, J. J.; Cervera González, Iván; Saura Barreda, Juan J. Springer Verlag (2014-10)
      A microcrystalline Ni-22Cr-10Al-1Y (wt.%) coating was deposited on AISI 304 stainless steel by the oxyfuel thermal spray technique. The deposited coating was subjected to heat treatment to improve the microstructure ...

    • closedAccess   Study of the degradation of hybrid sol–gel coatings in aqueous medium 

      Suay, Julio; Cabedo, Luis; Hernández Escolano, Miriam; Juan Díaz, M.; Martínez Ibáñez, M.; Izquierdo Escrig, Raul; GURRUCHAGA, MARILO; Goñi, Isabel Elsevier (2014-11)
      The design and development of suitable multilayered functional coatings for delaying corrosion advance in metals and become controlled-release vehicles requires that the properties of the coatings are known. Coatings ...

    • openAccess   Detailed study of DFIG-based wind turbines to overcome the most severe grid faults 

      Rolán Blanco, Alejandro; Pedra Durán, Joaquín; Córcoles López, Felipe Elsevier (2014-11)
      This paper studies the effects of voltage sags caused by faults on doubly-fed induction generators to overcome grid faults. A wide range of sag duration and depth values is considered. It is observed that sag duration ...

    • closedAccess   Anticorrosive properties enhancement by means of phosphate pigments in an epoxy 2k coating. Assessment by NSS and ACET 

      Gracenea Zapirain, José Javier; Suay, Julio; Gimeno, María José; Chamorro, S.; March, Richard; Oró Calderó, Esther; Pérez, P. Elsevier (2014-12)
      The effect of the addition of anticorrosive phosphate pigments (different types and quantities), standard zinc phosphate and organophilized zinc molybdate phosphate, on the corrosion resistance properties of epoxy coating ...

    • openAccess   Más de Moró, un testimonio arquitectónico de la sociedad rural del siglo XIX congelado en el tiempo 

      Sáez Riquelme, Beatriz; Pitarch-Roig, Angel-Miguel; Pitarch Roig, María Servicio de Comunicación y Publicaciones. Universitat Jaume I (2015)

    • openAccess   Combinación de tecnologías en el levantamiento de planos. La iglesia parroquial de Portell 

      Sáez Riquelme, Beatriz; Pitarch-Roig, Angel-Miguel Asociación de profesores de expresión gráfica aplicada a la edificación (APEGA) (2015)
      La sucesiva aplicación de las nuevas tecnologías a la expresión gráfica arquitectónica ha supuesto una revolución en cada uno de los pasos que dan como resultado el levantamiento de planos. En general se puede decir ...

    • openAccess   Diseño del control de un convertidor DC-DC de dos etapas con un algoritmo genético 

      Flors-Mas, O.; Ariño Latorre, Carlos Vicente; Pérez, Emilio; Alfonso, j. Carlos; Beltran, Hector Publicaciones de Ingeniería, Escuela Técnica Superior de Ingeniería (2015)
      Este art ́ıculo introduce la estructura y el disen ̃o del control de un convertidor DC–DC bidireccional que sirve para gestionar los flujos de energ ́ıa en el lado de continua de un filtro activo que asume el rol de mas- ...

    • openAccess   Parameter estimation of squirrel-cage motors with parasitic torques in the torque-slip curve 

      Monjo, Lluís; Córcoles López, Felipe; Pedra Durán, Joaquín Institution of Engineering and Technology (2015)
      This paper studies parasitic torques in steady-state torque-slip curves of squirrel-cage induction motors. The curves of nine motors (small, medium and large size units), three of which were measured in the range s = 2 ...

    • openAccess   Mejora de la termoconformabilidad del PHBV mediante mezclas biodegradables con poliuretano 

      González Ausejo, Jennifer; Sánchez-Safont, Estefanía; Gamez-Perez, Jose; Cabedo, Luis Compobell (2015)
      Mezclas de poli (3-hidroxibutirato-co-3-hidroxivalerato) (PHBV) y poliuretano termoplástico (TPU) se obtuvieron mediante extrusión con el objetivo de mejorar la procesabilidad del PHBV. La morfología, las propiedades ...

    • openAccess   Study of resonance in wind parks 

      Monjo, Lluís; Sainz, Luis; Liang, Jun; Pedra Durán, Joaquín Elsevier (2015)
      Wind turbine harmonic current emissions are a well-known power quality problem. These emissions flow through wind park impedances, leading to grid voltage distortion. Parallel resonance may worsen the problem because it ...

    • openAccess   Study of resonances in 1x25kV AC traction systems 

      Monjo, Lluís; Sainz, Luis (2015)
      Abstract: AC traction systems are 1x25 or 2x25 kV 50 Hz single-phase, non-linear, time-varying loads that can cause power quality problems. One of the main concerns about these systems is voltage distortion because ...

    • openAccess   Uso del social media como estrategia de posicionamiento global para estudios de arquitectura 

      García-García, Carlos; Felip, Francisco; Royo González, Marta Asociación de profesores de expresión gráfica aplicada a la edificación (APEGA) (2015)
      The evolution of the internet has promoted the globalization of the current economic system. In this scenario, architecture studios may be forced to relocate its customer base, looking for new business opportunities outside ...

    • closedAccess   The combined role of inhibitive pigment and organo-modified silica particles on powder coatings: Mechanical and electrochemical investigation 

      Puig Brugal, Montserrat; Cabedo, Luis; Gracenea Zapirain, José Javier; Suay, Julio Elsevier (2015)
      The addition of organo-modified silica particles (OSP) to powder coating containing zinc molybdenum phosphate pigment (ZMP) has been investigated. The OSP were directly incorporated at different concentrations (1, 2.5, 3.5 ...

    • openAccess   Modular multi-level DC-DC converter for high-power and high-voltage applications 

      Vidal-Albalate, Ricardo; Soto Sánchez, Diego; Belenguer Balaguer, Enrique; Peña, Rubén; Blasco-Gimenez, Ramon IEEE (2015)
      A transformer-less DC-DC Modular Multi-level Converter (DC-DC-MMC) topology based on H-bridge cells is proposed in this paper. The suggested DC-DC-MMC can be used to either control the power flow in a HVdc grid ...