Experimental studies of impact on a critical heat flux the parameters of nanoparticle layer formed at nanofluid boiling
https://doi.org/10.17586/2220-8054-2018-9-2-279-289
Abstract
The paper presents experimental studies of nanoparticle layer, which is established on the heated surface during the boiling of nanofluid, and the influence of the process and resulting nanoparticle layer on the magnitude of critical heat flux. The examined nanofluid is distilled water (distillate) with dispersed ZrO2 nanoparticles. A nichrome wire is used as heater. The varied parameters are: volumetric concentration of particles (C0); exposition time in the nucleate boiling regime (τ); initial heat flux at exposition (q0). Critical heat flux (CHF) was measured in each case. The morphology of nanoparticle layer produced in different conditions is analyzed using the method of scanning electron microscopy. The experiments have determined the influence of boiling parameters on the nanoparticle layer formation on the heated surface and sensitivity of the CHF magnitude to the properties of established nanoparticle layer in the experimental conditions.
Keywords
nanofluid,
ZrO2 nanoparticles,
nanostructured surface,
microstructure,
departure from nucleate boiling (DNB),
critical heat flux (CHF)
Supporting agencies: The authors would like to thank I.K. Boricheva for help in SEM analysis and A.V. Lysenko for technical assistance.
About the Authors
V. B. Khabensky
A.P. Alexandrov Research Institute of Technology “NITI”
Russian Federation
Russian Federation
188540, Leningrad Region, Sosnovy Bor, Koporskoe shosse, 72
A. L. Sirotkina
Peter the Great St. Petersburg Polytechnic University
Russian Federation
Russian Federation
195251, St. Petersburg, Politekhnicheskaya str., 29
V. I. Almjashev
A.P. Alexandrov Research Institute of Technology “NITI”; Saint Petersburg Electrotechnical University “LETI”
Russian Federation
Russian Federation
188540, Leningrad Region, Sosnovy Bor, Koporskoe shosse, 72
197376, St. Petersburg, Prof. Popov str., 5
E. D. Fedorovich
Peter the Great St. Petersburg Polytechnic University
Russian Federation
Russian Federation
195251, St. Petersburg, Politekhnicheskaya str., 29
V. V. Sergeev
Peter the Great St. Petersburg Polytechnic University
Russian Federation
Russian Federation
195251, St. Petersburg, Politekhnicheskaya str., 29
V. V. Gusarov
Ioffe Institute
Russian Federation
Russian Federation
194021, St. Petersburg, Politekhnicheskaya str., 28
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Review
For citations:
Khabensky V.B., Sirotkina A.L., Almjashev V.I., Fedorovich E.D., Sergeev V.V., Gusarov V.V. Experimental studies of impact on a critical heat flux the parameters of nanoparticle layer formed at nanofluid boiling. Nanosystems: Physics, Chemistry, Mathematics. 2018;9(2):279–289. https://doi.org/10.17586/2220-8054-2018-9-2-279-289
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