NANOFLUIDS ON THE BASIS OF UKRAINIAN NATURAL ALUMINOSILICATES ARE PROMISING HEAT-CARRIERS FOR POWER ENGINEERING

  • V.N. Moraru The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
  • D.V. Komysh The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
  • A.I. Khovavko The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
  • O.V. Snigur The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv
  • N.N. Gudkov National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Kyiv
  • N.A. Sydorenko National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute», Kyiv
  • A.I. Marinin National University of Food Technologies of Ukraine, Kyiv
Keywords: aluminosilicates, nanofluids, specific heat flux, dispersant

Abstract

Ukrainian natural aluminosilicates — montmorillonite, attapulgite and their genetic mixture with montmorillonite with scaly, plate-like and needle shape of nanoparticles were used to create nanodispersions for energetics. The nanodimension, the different form and anisometry of their particles, high wetting ability of surface and the ability to spontaneous dispersion in water solutions — all these characteristics predetermine high heat parameters of these nanofluids as heat agents especially at boiling. The boiling curves of nanofluids in conditions of free convection have been obtained. The aim of this study is to investigate the influence of nanoparticles shape (anisometry), as well as ratio of nanofluids boiling-cooling and presence of dispersants on their stability, critical heat flux and the state of the heating surface. It was found that attapulgite nanofluid with particles of similar size, but having a greater anisometry, causes a stronger increase of critical heat flux (up to 2,5–3 times) than the montmorillonite nanofluid (1,4–1,9 times) with the same particles volume concentration. Bibl. 32, Fig. 5, Table 1.

Author Biographies

V.N. Moraru, The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv

Candidate of Chemistry Sciences

A.I. Khovavko, The Gas Institute of the National Academy of Sciences of Ukraine, Kyiv

Candidate of Technical Sciences

A.I. Marinin, National University of Food Technologies of Ukraine, Kyiv

Candidate of Technical Sciences

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Published
2015-02-20
How to Cite
Moraru, V., Komysh, D., Khovavko, A., Snigur, O., Gudkov, N., Sydorenko, N., & Marinin, A. (2015). NANOFLUIDS ON THE BASIS OF UKRAINIAN NATURAL ALUMINOSILICATES ARE PROMISING HEAT-CARRIERS FOR POWER ENGINEERING. Energy Technologies & Resource Saving, (1), 22-32. Retrieved from https://etars-journal.org/index.php/journal/article/view/128
Section
Thermophysical basics of energy processes

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