Listar por autoría "574d1aed-8572-4790-9b24-23b5d3157c12"
Mostrando ítems 1-20 de 45
-
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 ... -
Characterization of silica–water nanofluids dispersed with an ultrasound probe: A study of their physical properties and stability
Mondragon, Rosa; Juliá Bolívar, José Enrique; Barba-Juan, Antonio; Jarque Fonfría, Juan Carlos Elsevier (2012)The stability and agglomeration state of nanofluids are key parameters for their use in different applications. Silica nanofluids were prepared by dispersing the nanoparticles in distilled water using an ultrasonic probe, ... -
Characterization study of a thermal oil-based carbon black solar nanofluid
Gimeno Furió, Alexandra; Hernandez, Leonor; Navarrete Argilés, Nuria; Mondragon, Rosa Elsevier (2019)Carbon nanoparticles are very useful in solar thermal applications, since they absorb much of the solar spectrum, are cheap and have excellent optical properties. Carbon nanoparticlesthermal oil-based nanofluid was ... -
Colloidal stability of molten salt –based nanofluids: Dynamic Light Scattering tests at high temperature conditions
Navarrete Argilés, Nuria; Gimeno Furió, Alexandra; Forner Escrig, Josep; Juliá Bolívar, José Enrique; Mondragon, Rosa Elsevier (2019)The use of molten salt-based nanofluids as heat transfer fluids or thermal energy storage materials to increase the efficiency of Concentrated Solar Power plants has gained attention due to the use of the renewable ... -
Convective heat transfer performance of thermal oil-based nanofluids in a high-temperature thermohydraulic loop
Gil Font, Javier; Navarrete Argilés, Nuria; Cervantes Calvo, Estefanía; Mondragon, Rosa; Torró Cueco, Salvador Francisco; Martinez Cuenca, Raul; Hernandez, Leonor Elsevier Masson SAS (2021-09-08)Enhancing the performance of heat transfer fluids (HTF) is a key target for improving the efficiency of many industrial processes. Employing nanofluids for this purpose, by dispersing nanoparticles into the initial HTF to ... -
Determination of the packing fraction of silica naoparticles from the rheological and viscoelastic measurements of nanofluids
Mondragon, Rosa; Juliá Bolívar, José Enrique; Barba-Juan, Antonio; Jarque Fonfría, Juan Carlos elsevier (2012-10)Nanofluids have become of great interest due to the excellent properties and reduced size of nanoparticles making them useful for different applications. The agglomeration of nanoparticles depends on the interparticle ... -
Effect of slurry properties and operational conditions on the structure and properties of porcelain tile granules dried in an acoustic levitator
Mondragon, Rosa; Jarque Fonfría, Juan Carlos; Juliá Bolívar, José Enrique; Hernandez, Leonor; Barba-Juan, Antonio Elsevier (2012)Spray-drying is a unit operation highly important in many industrial applications. In this work, the influence of the drying conditions on the final grain properties has been investigated in single droplet experiments.Porcelain ... -
Experimental Characterization and Statistical Analysis of Water-Based Gold Nanofluids for Solar Applications: Optical Properties and Photothermal Conversion Efficiency
Burgos Rodríguez, Jorge; Mondragon, Rosa; Elçioğlu, Elif Begüm; Fabregat-Santiago, Francisco; Hernandez, Leonor Wiley (2022-03-26)Optimizing optical and photothermal properties of the solar nanofluids (NFs) to be used in direct absorption solar collectors is a key issue to maximize efficiencies in these collector types. This work both experimentally ... -
Experimental study of different coatings on silica sand in a directly irradiated fluidised bed: Thermal behaviour and cycling analysis
García-Plaza, J.; Díaz, Minerva; Mondragon, Rosa; Hernandez, Leonor; Calderon, Alejandro; Barreneche, Camila; Canales-Vázquez, J.; Fernandez, Ana Ines; Almendros-Ibáñez, José A. Elsevier (2022-11-25)The present work shows the experimental results obtained with sand particles, which where coated to increase the thermal absorptivity for CSP applications. The particles were tested in a lab-scale fluidised bed with ... -
Fabrication of gold nanoparticles in Therminol VP-1 by laser ablation and fragmentation with fs pulses
Torres-Mendieta, Rafael; Mondragon, Rosa; Juliá Bolívar, José Enrique; Mendoza-Yero, Omel; Cordoncillo, Eloisa; Lancis, Jesús; Mínguez-Vega, Gladys IOP Science (2014-10-22)This letter reports on a physical method to produce highly pure, size-controlled and well-dispersed spherical gold nanoparticles (NPs) in Therminol VP-1 by pulsed laser ablation in liquids (PLAL) using a 30 fs Ti:Sapphire ... -
Fabrication of high stable gold nanofluid by pulsed laser ablation in liquids
Torres-Mendieta, Rafael; Mondragon, Rosa; Juliá Bolívar, José Enrique; Mendoza-Yero, Omel; Lancis, Jesús; Mínguez-Vega, Gladys Copyright © 2015 VBRI Press (2015-11)Laser ablation in liquids by femtosecond radiation has been used to generate gold nanoparticles in a heat transfer fluid to produce a high stable thermal nanofluid as a heat transfer intensification technique. In oil based ... -
Finite element formulation to study thermal stresses in nanoencapsulated phase change materials for energy storage
Forner Escrig, Josep; Palma Guerrero, Roberto; Mondragon, Rosa Taylor & Francis (2020-03-09)Nanoencapsulated phase change materials (nePCMs) – which are composed of a core with a phase change material and of a shell that envelopes the core – are currently under research for heat storage applications. Mechanically, ... -
Flat plate solar collector performance using alumina nanofluids: Experimental characterization and efficiency tests
Mondragon, Rosa; Sánchez García-Vacas, Daniel; Cabello López, Ramón; Llopis, Rodrigo; Juliá, J. Enrique Public Library of Science (2019)Solar energy has become an important renewable energy source for reducing the use of fossil fuels and to mitigate global warming, for which solar collectors constitute a technology that is to be promoted. The use of ... -
Improved thermal energy storage of nanoencapsulated phase change materials by atomic layer deposition
Navarrete Argilés, Nuria; La Zara, Damiano; Goulas, Aristeidis; Valdesueiro, David; Hernandez, Leonor; van Ommen, J. Ruud; Mondragon, Rosa Elsevier (2020-03-31)Renewable energy has become of great interest over the past years in order to mitigate Global Warming. One of the actions gaining attention is the enhancement of the thermal energy storage capacity of Concentrated Solar ... -
Improving heat transfer of stabilised thermal oil-based tin nanofluids using biosurfactant and molecular layer deposition
Gil Font, Javier; Hatte, Marie-Anne; Bailey, Maximilian; Navarrete Argilés, Nuria; Ventura Espinosa, Jorge; Goulas, Aristeidis; La Zara, Damiano; van Ommen, J. Ruud; Mondragon, Rosa; Hernandez, Leonor Elsevier (2020-09)The development of advanced heat transfer fluids (HTF) with enhanced heat transfer properties has been identified as a key target to increase the efficiency of industrial processes. In this work, heat transfer performance ... -
Increment of specific heat capacity of solar salt with SiO2 nanoparticles
Andreu Cabedo, Patricia; Mondragon, Rosa; Hernandez, Leonor; Martinez Cuenca, Raul; Cabedo, Luis Springer (2014)Thermal energy storage (TES) is extremely important in concentrated solar power (CSP) plants since it represents the main difference and advantage of CSP plants with respect to other renewable energy sources such as wind, ... -
Influence of nanoparticle morphology and its dispersion ability regarding thermal properties of water used as phase change material
Barreneche, Camila; Mondragon, Rosa; Ventura Espinosa, David; Mata Martínez, Jose A; CABEZA, LUISA F.; Fernández, A. Inés; Juliá Bolívar, José Enrique (2018-01-05)Nanoparticles with different morphologies were added to water to study if the morphology of the nanoparticles affects the main parameters of water used as phase change material (PCM). Considered morphologies were spherical, ... -
Influence of Particle Size on the Drying Kinetics of Single Droplets Containing Mixtures of Nanoparticles and Microparticles: Modeling and Pilot-Scale Validation
Mondragon, Rosa; Juliá Bolívar, José Enrique; Hernandez, Leonor; Jarque Fonfría, Juan Carlos Taylor & Francis (2013-05-03)The particle size of the primary particles is an important parameter influencing the drying behavior of droplets. In this work, the influence of particle size on the drying kinetics and grain properties was analyzed for ... -
Influence of the particle size on the microstructure and mechanical properties of grains containing mixtures of nanoparticles and microparticles: Levitator tests and pilot-scaled validation
Mondragon, Rosa; Juliá Bolívar, José Enrique; Barba-Juan, Antonio; Jarque Fonfría, Juan Carlos Elsevier (2013)The spray drying process is used in many industrial applications. However, different grain properties can be desirable depending on the later use of the powders produced. In this work the influence of the particle size on ... -
Influence of the production method on the thermophysical properties of high temperature molten salt-based nanofluids
Navarrete Argilés, Nuria; Hernandez, Leonor; VELA GASULLA, ANTONIO FABIAN; Mondragon, Rosa Elsevier (2020-01-28)The potential use of molten salt-based nanofluids as thermal energy storage material in Concentrated Solar Power plants has gained attention over the last years due to their enhanced storage capacity. The possible effects ...