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Effect of nanoparticles concentration on the characteristics of nanofluid sprays for cooling applications

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU128153" target="_blank" >RIV/00216305:26210/19:PU128153 - isvavai.cz</a>

  • Result on the web

    <a href="https://link.springer.com/article/10.1007/s10973-018-7444-z" target="_blank" >https://link.springer.com/article/10.1007/s10973-018-7444-z</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1007/s10973-018-7444-z" target="_blank" >10.1007/s10973-018-7444-z</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Effect of nanoparticles concentration on the characteristics of nanofluid sprays for cooling applications

  • Original language description

    This study addresses the effect of nanofluid synthesis on the rheological properties of the resulting fluid and their consequent effect on the characteristics (size and velocity distribution of droplets, spray cone angle, etc.) of the sprayed nanofluids. The results are discussed in the light of how the spray characteristics affect the use of the resulting nanofluid spray for cooling purposes. Nanoparticles of alumina (Al2O3) and zinc oxide (ZnO) are mixed in water-based solutions, for concentrations varying between 0.5% and 2 mass% for alumina and between 0.01% and 0.1 mass% for the zinc oxide particles. FeCl2 4H2O (0.1 mass%) was also used to infer on the effect of the nature (material) of the particles in the physicochemical properties of the resulting solutions. Among the various surfactants tested, citric acid (0.15%) was chosen for the final working mixtures, as it assured a stable behaviour of the solutions prepared during the entire study. The nanoparticles were characterized in detail, and the physicochemical properties of the fluid were measured before and after atomization, to evaluate any possible particle loss in the liquid feeding system or retention in the atomizer. The nanofluids were sprayed using a pressure-swirl atomizer at 0.5 MPa injection pressure. Droplet size and velocity in the spray were probed using phase Doppler anemometry. For the range of experimental conditions covered here, the results show that liquid viscosity is an important parameter in predetermining the spray characteristics of nanofluids, as it affects the primary liquid breakup. Despite this, only a mild increase is observed in the nanofluids viscosity, mainly for higher concentrations of alumina, which was not sufficient to significantly affect the spray characteristics, except for a small decrease in the spray cone angle and the size of the atomized droplets. Hence, for cooling purposes, the atomization mechanisms are not compromised by the addition of the nanoparticles and

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10305 - Fluids and plasma physics (including surface physics)

Result continuities

  • Project

    <a href="/en/project/GA18-15839S" target="_blank" >GA18-15839S: Characterization of internal flow and spray for new modifications of spill-return pressure-swirl atomizers</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2019

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Thermal Analysis and Calorimetry

  • ISSN

    1388-6150

  • e-ISSN

    1588-2926

  • Volume of the periodical

    135

  • Issue of the periodical within the volume

    6

  • Country of publishing house

    HU - HUNGARY

  • Number of pages

    12

  • Pages from-to

    3375-3386

  • UT code for WoS article

    000462553400046

  • EID of the result in the Scopus database

    2-s2.0-85048366349