Thermophysical properties and heat transfer in mono and hybrid nanofluids with different base fluids: an overview

Kanthimathi, T.; Bhramara, P.; Atgur, Vinay; Rao, B. Nageswara; Banapurmath, Nagaraj R.; Sajjan, Ashok M.; Badruddin, Irfan Anjum; Kamangar, Sarfaraz; Khan, T. M. Yunus; Baig, Rahmath Ulla; Vadlamudi, Chandramouli; Krishnappa, Sanjay

doi:10.1007/s10973-023-12769-y

Cited by 2 publications

(1 citation statement)

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“…The above properties are also influenced by the mixing ratio of nanoparticles, which is a key factor that needs to be considered. Kanthimathi et al [ 19 ] conducted a study to investigate the effects of single-component and hybrid nanofluids on the heat transfer process and the thermophysical properties of different base fluids. The study also presented a case study of SiC nanoparticles suspended in a mixture of ethylene glycol and water.…”

Section: Introductionmentioning

confidence: 99%

Properties Related to the HLB Value of Hybrid Thermoelectric Nanofluids at Different Temperatures

Wang,

Wang

2024

Polymers

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This article aims to explore the impact of HLB (Hydrophile-Lipophile Balance) values on two key properties, namely the thermoelectric conductivities and the stability of the suspension, of a hybrid nanofluid composed of TiO2 and CuO nanoparticles. The present study employed a two-step synthesis method to prepare the polymeric nanofluid, which meant that the nanoparticles were mixed with the base fluid using an ultrasonic oscillator, which was easier and cheaper than the one-step synthesis method. To ensure that the nanoparticles remain evenly dispersed in the base fluid, two distinct polymer-emulsifier combinations with different HLB values were employed as the dispersing agents. The first pair of polymeric emulsifiers consisted of Span#20 and Tween#20, and the second pair was Span#80 and Tween#80 composed to four HLB values of 12, 13, 14, and 15. The experiment measured the properties of the nanofluid, including the particle size, Zeta potential, and thermoelectric conductivities at different temperatures from 20 °C to 50 °C. The experimental outcomes indicated that an HLB value of 13 was the best for the two sets of polymeric emulsifiers tested. This value corresponded to the most reduced particle size, measured at 170 nm, alongside the most elevated Zeta potential, recorded at −30 mV. Additionally, this HLB value was associated with the peak thermoelectric conductivity, which was 1.46 W/m∙K. This suggests that there may be some variation in the best HLB value depending on the type of polymeric emulsifiers and the temperature of the hybrid nanofluid.

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Section: Introductionmentioning

confidence: 99%