Effects of Carbon Nanohorn Based Nanofluids Pool Boiling on Optical Properties and Wettability of Different Metal Surfaces
| Autor: | Leonor Hernández, Alexandra Gimeno-Furio, David Cabaleiro, Simone Mancin, Gregorio Bottaro, Luca Doretti, Filippo Agresti, Simona Barison |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
CONTACT-ANGLE 020209 energy Carbon nanohorn chemistry.chemical_element 02 engineering and technology OXIDATION Nanofluids Metal Carbon Nanohorn Nanofluid ENHANCEMENT 0203 mechanical engineering Pulmonary surfactant Aluminium Boiling CRITICAL HEAT-FLUX 0202 electrical engineering electronic engineering information engineering NANOPARTICLES Suspension (vehicle) Fluid Flow and Transfer Processes Mechanical Engineering Solar harvesting applications DEGRADATION Condensed Matter Physics 020303 mechanical engineering & transports Chemical engineering chemistry visual_art Wettability visual_art.visual_art_medium Wetting Realized coating |
| Zdroj: | Heat transfer engineering (Online) (2020). doi:10.1080/01457632.2020.1818407 info:cnr-pdr/source/autori:Gimeno-Furio A.; Hernandez L.; Barison S.; Agresti F.; Bottaro G.; Cabaleiro D.; Doretti L.; Mancin S./titolo:Effects of Carbon Nanohorn Based Nanofluids Pool Boiling on Optical Properties and Wettability of Different Metal Surfaces/doi:10.1080%2F01457632.2020.1818407/rivista:Heat transfer engineering (Online)/anno:2020/pagina_da:/pagina_a:/intervallo_pagine:/volume |
| DOI: | 10.1080/01457632.2020.1818407 |
| Popis: | Oxidized carbon nanohorn water based nanofluids are attracting more and more attention for solar harvesting applications because of their peculiar features: stable suspension without any surfactant, higher solar absorbance values as compared to the base fluid, etc. However, these nanofluids are still matter of research because not all their properties have been comprehensively studied yet. This paper is focused on the wettability properties of the carbon nanohorn water based nanofluids on different metal surfaces. The static contact angle was measured for ten nanofluids with concentrations ranging from 0.002%wt to 0.1% wt, five of those used non-oxidized carbon nanohorns while the other five used oxidized carbon nanohorns. Moreover, this work investigates a novel use of the oxidized carbon nanohorn nanofluids to deposit an ultra-thin layer via pool boiling. The realized coating was proved to be stable and found to slightly affect the wettability of the nanofluids. Finally, the solar reflectance of the coated aluminum sample was measured and found to be from 2 to 10 times lower as compared to a reference aluminum surface. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|