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Experimental investigation on thermal conductivity of surfactant-less aluminium oxide (Al2O3) in water nanofluid using acoustic velocity measurements


Affiliations
1 Thermal Research Laboratory, School of Mechanical Engineering, Kalinga Institute of Industrial Technology (KIIT) Deemed to be University, Bhubaneswar 751 024, India, India
2 Institute for Plasma Research, Bhat, Gandhinagar 382 428, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India, India
 

The thermal conductivity of Al2O3–water nanofluid (NF) was investigated in this study utilizing ultrasonic velocity. The change in thermal conductivity was calculated by increasing the weight fraction from 0.01% to 1% for every 10°C elevation in the temperature range of 25–65°C. The thermal conductivity of NF augmented with an enhancement in nanoparticle concentration and rise in temperature. The thermal conductivity of NF was higher than that of basefluid. Finally, the experimental results were compared with classical thermal conductivity models and the thermal conductivity enhancement coefficient was further used to investigate thermal conductivity augmentation
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  • Experimental investigation on thermal conductivity of surfactant-less aluminium oxide (Al2O3) in water nanofluid using acoustic velocity measurements

Abstract Views: 236  |  PDF Views: 75

Authors

Sayantan Mukherjee
Thermal Research Laboratory, School of Mechanical Engineering, Kalinga Institute of Industrial Technology (KIIT) Deemed to be University, Bhubaneswar 751 024, India, India
Purna Chandra Mishra
Thermal Research Laboratory, School of Mechanical Engineering, Kalinga Institute of Industrial Technology (KIIT) Deemed to be University, Bhubaneswar 751 024, India, India
Paritosh Chaudhuri
Institute for Plasma Research, Bhat, Gandhinagar 382 428, India; Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India, India
Shanta Chakrabarty
Thermal Research Laboratory, School of Mechanical Engineering, Kalinga Institute of Industrial Technology (KIIT) Deemed to be University, Bhubaneswar 751 024, India, India

Abstract


The thermal conductivity of Al2O3–water nanofluid (NF) was investigated in this study utilizing ultrasonic velocity. The change in thermal conductivity was calculated by increasing the weight fraction from 0.01% to 1% for every 10°C elevation in the temperature range of 25–65°C. The thermal conductivity of NF augmented with an enhancement in nanoparticle concentration and rise in temperature. The thermal conductivity of NF was higher than that of basefluid. Finally, the experimental results were compared with classical thermal conductivity models and the thermal conductivity enhancement coefficient was further used to investigate thermal conductivity augmentation

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DOI: https://doi.org/10.18520/cs%2Fv121%2Fi8%2F1032-1038