Enhancement of thermal conductivity of water based individual and hybrid SiO2/Ag nanofluids with the usage of calcium carbonate nano particles as stabilizing agent

SELVAN, P. SELVAN P.; Jebakani, D.; Jeyasubramanian, K.; Jebaraj, D. Jones Joseph

doi:10.1016/j.molliq.2021.117846

Cited by 21 publications

(1 citation statement)

References 32 publications

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“…This, in turn, improves heat transmission efficiency dramatically. Meanwhile, the use of Cellulose Nanocrystals (CNC) in nanofluids has gotten a lot of interest because of its unique properties including high aspect ratio, high thermal stability, and renewable nature [4]. While research on CNC-based nanofluids is rather rare, first findings suggest encouraging outcomes in terms of improved heat transfer capacities [5].…”

Section: Introductionmentioning

confidence: 99%

Exploring the Potentials of Copper Oxide and CNC Nanocoolants

Hizarhuda Zurghiba,

Kumaran Kadirgama,

Norazlianie Sazali

et al. 2023

ARASET

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The characteristics, stability, kinematic viscosity, viscosity index, thermal conductivity, and specific heat changes of Copper Oxide (CuO) and Cellulose Nanocrystal (CNC) hybrid nanocoolants at low concentrations are investigated in this work. The hybrid nanocoolants were created using different ratios of CNC and CuO nanoparticles and compared to single nanoparticle coolants. The existence of Cu-O and other similar formations was verified using Fourier Transform Infrared Spectroscopy (FTIR). Visual examination and UV Spectrophotometry stability study revealed that the nanocoolants were stable for up to 8 weeks, with little precipitation seen for single nanoparticle coolants after 12 weeks. When tested against temperature, kinematic viscosity decreased with increasing temperature, with very minor differences amongst coolants. The results of the Viscosity Index (VI) indicated that the hybrid nanocoolant performed similarly to the basic fluid, Ethylene Glycol (EG), even at high temperatures. Thermal conductivity rose as temperature increased, with a single CuO nanocoolant and a CNC:CuO (80:20) hybrid having the maximum conductivity. Specific heat capacity measurements revealed a declining trend as temperature rose. Overall, the CNC:CuO (80:20) hybrid nanocoolant and the CuO single nanocoolant displayed improved characteristics and stability, suggesting their potential for increased heat transfer applications.

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Section: Introductionmentioning

confidence: 99%

Exploring the Potentials of Copper Oxide and CNC Nanocoolants

Hizarhuda Zurghiba,

Kumaran Kadirgama,

Norazlianie Sazali

et al. 2023

ARASET

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Effects of Key Parameters on Nanofluid Thermal Performance in Heat Exchangers

2023

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Nanofluids are utilized in cooling equipment such as heat exchangers and renewable energies such as solar cells as heat transfer fluid. The techniques for nanofluid stability enhancement and stability evaluations, such as zeta potential, electron microscopy, and photographic techniques for sedimentation, are reviewed as well as some recent achievements in nanofluid stabilization and research on the parameters affecting the thermal properties of nanofluids. Finally, the applications of nanofluids in cooling devices are described. Increased heat transfer, reduced heat transfer time and size of heat exchangers, and finally higher energy and heat efficiency could be the most significant achievements. The parameters affecting the thermal conductivity of nanofluids include concentration, temperature, particle fluid, type of base fluid, and nanoparticles.

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