Comparative thermal analysis of an EG-based nanofluid containing DWCNTs
Department of Mechanical Engineering, Imam Hossein University, Tehran, Iran
Accepted: 9 April 2021
Published online: 29 April 2021
The thermal conductivity (TC) of DWCNT/EG nanofluid at the temperature range of 30–50 °C and solid volume fraction (SVF) range of 0.055–0.92% was investigated. The results showed that the enhancement of SVF at 50 °C increases TC up to 35.37%. Experimental data obtained for this nanofluid were compared with experimental results of SWCNT/EG, DWCNT–ZnO/EG–water (40:60), MWCNT–ZnO (50:50)/EG–water (50:50) and SWCNT–ZnO (30:70)/EG–water (60:40). Using experimental data, a correlation was proposed for the prediction of TC with R2 (regression coefficient) and maximum correlation error of 0.993687% and 2%, respectively. Nanofluid sensitivity analysis showed that in higher SVFs, the increment of sensitivity relative to temperature is higher than in lower SVFs.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021