Rosa Mondragón

Thermal and exergy efficiency analysis of a corrugated thermosyphon water heater integrated with an evacuated tube solar collector using TiO₂ nanofluid

Sanhawat Thongdang, Yulong Ding, Thanya Parametthanuwat, Rosa Mondragón et autres

This study investigates the thermal and exergy performance of a corrugated two-phase closed thermosyphon (CTPCT) integrated with an evacuated tube solar collector (ETSC) using titanium dioxide (TiO₂) nanofluid as the working fluid. The system was evaluated at different filling ratios and compared …

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Development and characterization of hybrid water-based nanofluids for solar thermal applications

Tukhtamurod Juraev, Akbar Halimov, Leonor Hernández, Rosa Mondragón

Hybrid nanofluids enhance performance compared to mono nanofluids. In this work, two different combinations of nanoparticles were mixed to produce water-based Al 2 O 3 -SiO 2 and Al 2 O 3 -CBox hybrid nanofluids at 2 wt.% and 4 wt.%. Particle …

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Experimental evaluation of carbon-coated sand as solar-absorbing and thermal energy storage media for concentrated solar power applications

J. B. González Rodríguez, Marc Majó, Rosa Mondragón, M. Díaz-Heras et autres

• Sand particles coated with graphite, carbon black and glucose were synthesised. • Original and fluidised (w/ and w/o radiation) coated samples were characterised. • Graphite samples showed the best homogeneity and coating stability up to 1000 °C. • Enhancements up to …

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Dynamic Viscosity and Specific Heat Capacity of Near Eutectic Gallium–Indium–Tin Alloy

Matthias H. Buschmann, S. Feja, R. Künanz, C. Hanzelmann et autres

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Application of Hybrid Nanofluids in MQL Assisted Machining Operations: Exploring Synergies and Establishing Guidelines

José V. Abellán‐Nebot, Kudama Habib Ameen, Aqib Mashood Khan, Rosa Mondragón

Abstract Minimum quantity lubrication (MQL) is considered a promising lubricating technique for machining processes that can reduce the environmental impact of conventional flooding lubrication systems and improve operators’ safety. The addition of nanoparticles has been proved to increase the lubricating performance of …

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Nanofluid Minimum Quantity Lubrication (NMQL): Overview of Nanoparticle Toxicity and Safer-Design Guidelines

José V. Abellán‐Nebot, Óscar Andreu-Sánchez, Carlos Fito, Rosa Mondragón

Minimum Quantity Lubrication (MQL) has received much attention from the research community as a potential lubricating system to reduce environmental hazards and health issues that can be commonly found in flood cooling/lubricating systems based on metalworking fluids. The addition of nanoparticles in …

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Experimental thermal analysis of an innovative heat sink coupled to a nanoemulsion

Giulia Righetti, Jorge Burgos, Leonor Hernández, Rosa Mondragón et autres

Abstract This work presents some new experimental measurements collected on a very innovative system proposed for electronic cooling. This setup combines a classical heat sink with a latent thermal storage. The storage material is a phase change nanoemulsion made of water and …

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Development of a low-medium temperature T-history setup for the thermal storage characterization of non-homogeneous mixtures containing PCMs

Marina Ayora-Fernández, Marllory Isaza-Ruiz, Jorge Burgos, U. Nithiyanantham et autres

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PROMOTING ACTIVE LEARNING WITH VIDEO TUTORIALS AND ONLINE TESTS TO ASSESS THE STUDENTS' THEORETICAL BACKGROUND BEFORE LABORATORY SESSIONS IN ENGINEERING DEGREES

Jorge Burgos, Raúl Martı́nez-Cuenca, Salvador Torró, Inmaculada Fernández Arrillaga et autres

Conferència presentada a: 16th annual International Conference of Education, Research and Innovation. Sevilla, 13-15 novembre, 2023

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Tribological Analysis and Operation Issues of SiO2 Nanolubricants for MQL Machining Operations

Rosa Mondragón, José V. Abellán‐Nebot, K. A. Habib, Julio Serrano Mira

Minimum Quantity Lubrication (MQL) has been proved to be an efficient lubricant technique in machining that increases tool life, improves surface roughness, facilitates the recycling of the resulting chips, brings more sustainable practices in terms of minimum use of lubricants, and reduces …

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Photothermal properties and performance of hybrid carbon-paraffin/water emulsions

Jorge Burgos, Rosa Mondragón, Raúl Martı́nez-Cuenca, U. Nithiyanantham et autres

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Experimental study of different coatings on silica sand in a directly irradiated fluidised bed: Thermal behaviour and cycling analysis

J. García-Plaza, M. Díaz-Heras, Rosa Mondragón, Leonor Hernández et autres

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