Influence of Nanoparticle Shapes of Boehmite Alumina on the Thermal Performance of a Straight Microchannel Printed Circuit Heat Exchanger

Authors

  • Élcio Nogueira Department of Mechanic and Energy, State University of Rio de Janeiro, Brazil

DOI:

https://doi.org/10.30564/jmmr.v5i1.4364

Abstract

The efficiency and irreversibility defined based on the second law ofthermodynamics provide a new path for heat exchangers design and makeperformance analysis more straightforward and elegant. The second lawof thermodynamics is applied in a Straight Microchannel Printed Circuitheat exchanger to determine the thermal performance of different shapes ofBoehmite Alumina compared to Al2O3 aluminum oxide. The various formsof non-spherical Boehmite Alumina are characterized dynamically andthermodynamically through dynamic viscosity and thermal conductivity,using empirical coefficients. The non-spherical shape includes platelet,cylindrical, blades, and bricks forms. Graphical results are presented forthermal efficiency, thermal irreversibility, heat transfer rate, and nanofluidexit temperature. The non-spherical shapes of Boehmite Alumina showdifferent thermal characteristics concerning the spherical shape whenthere are variations in fluid flow rates and the nanoparticles fraction.Furthermore, it was theoretically demonstrated that non-spherical particleshave higher heat transfer rates than spherical particles, emphasizingplatelets and cylindrical shapes for the low volume fraction of nanoparticlesand bricks and blades for high volume fraction.

Keywords:

Shapes of nanoparticles, Boehmite alumina, Straight microchannel, Printed circuit heat exchanger (PCHE), Al2O3

References

[1] Bejan, A., 1987. The thermodynamic design of heat and mass transfer processes and devices. Heat and Fluid Flow. 8(4), 258-276.

[2] Fakheri, A., 2007. Heat Exchanger Efficiency. Transactions of the ASME. 129, 1268-1276. DOI: http://dx.doi.org/10.1016/j.applthermaleng.2017.05.076

[3] Tiwari, R., Maheshwari, G., 2017. Effectiveness and efficiency analysis of parallel flow and counter flow heat exchangers. IJAIEM. 6, 314-319.

[4] Nogueira, E., 2020. Thermal performance in heat exchangers by the irreversibility, effectiveness, and efficiency concepts using nanofluids. Journal of Engineering Sciences. 7, F1-F7. DOI: https://doi.org/10.21272/jes.2020.7(2).f1.

[5] Nogueira, E., 2021. Efficiency and Effectiveness Thermal Analysis of the Shell and Helical Coil Tube Heat Exchanger Used in an Aqueous Solution of Ammonium Nitrate Solubility (ANSOL) with 20% H2O and 80% AN. Journal of Materials Science and Chemical Engineering. 9, 24-45. DOI: https://doi.org/10.4236/msce.2021.96003

[6] Chai, L., Tassou, S.A., 2020. A review of printed circuit heat exchangers for helium and supercritical CO2 Brayton cycles. Thermal Science and Engineering Progress, 18(2020), 100543. DOI: https://doi.org/10.1016/j.tsep.2020.100543

[7] Seo, J.W., Kim, Y.H., Kim, D., Choi, Y.D., Lee, K.J., 2015. Heat Transfer and Pressure Drop Characteristics in Straight Microchannel of Printed Circuit Heat Exchangers. Entropy. 17, 3438-3457. DOI: https://doi.org/10.3390/e17053438

[8] Almurtaji, S., Ali, N., Teixeira, J.A., Addali, A., 2020. On the Role of Nanofluids in Thermal-Hydraulic Performance of Heat Exchangers—A Review. Nanomaterials. 10, 734. DOI: https://doi.org/10.3390/nano10040734.

[9] Zahmakesh, I., Sheremet, M., Y., Heris, S.Z., Mohsen, S., Josua, P., Meyere, M.G., Wongwises, S., Jingj, D., Mahiankl, O., 2021. Effect of nanoparticle shape on the performance of thermal systems utilizing nanofluids: A critical review. Journal of Molecular Liquids. 321(1), 114430. DOI: https://doi.org/10.1016/j.molliq.2020.114430

[10] Monfared, M., Shahsavar, A., Bahrebar, M.R., 2019. Second law analysis of turbulent convection flow of boehmite alumina nanofluid inside a double-pipe heat exchanger considering various shapes for nanoparticle. Journal of Thermal Analysis and Calorimetry. 135, 1521-1532. DOI: https://doi.org/10.1007/s10973-018-7708-7

[11] Behrouz, R., Peyghambarzadeh, S.M., 2019. Measurement of Local Convective Heat Transfer Coefficient of Alumina-Water Nanofluids in a Double Tube Heat Exchanger. Journal of Chemical and Petroleum engineering. 53(1), 25-36. DOI: https://doi.org/10.22059/jchpe.2019.265521.1247

[12] Elena, V., Timofeeva, J., Routbort, L., Dileep, S., 2009. Particle shape effects on thermophysical properties of alumina nanofluids. Journal of Applied Physics. 106, 014304. DOI: https://doi.org/10.1063/1.3155999

[13] Zhou, X.F., 2006. Effective thermal conductivity in nanofluids of non-spherical particles with interfacial thermal resistance: Differential effective medium theory. Journal of Applied Physics. 100, 024913. DOI: https://doi.org/10.1063/1.2216874

[14] Kays, W.M., London, A.L., 1984. Compact Heat Exchangers. MacGraw-Hill, New York.

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How to Cite

Nogueira, Élcio. (2022). Influence of Nanoparticle Shapes of Boehmite Alumina on the Thermal Performance of a Straight Microchannel Printed Circuit Heat Exchanger. Journal of Metallic Material Research, 5(1), 8–24. https://doi.org/10.30564/jmmr.v5i1.4364

Issue

Vol. 5 , Iss. 1 (April 2022)

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