Thermophysical properties measurement of nano cellulose in ethylene glycol/water

Ramachandran, K.; Hussein, Ahmed; Kadirgama, K.; Ramasamy, D.; Azmi, W.H.; Tarlochan, Faris; Kadirgama, G.

doi:10.1016/j.applthermaleng.2017.05.067

Cited by 33 publications

(17 citation statements)

References 40 publications

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“…Based on the qualitative method (sedimentation observation) used for examining the nanofluid's stability, it is noticed that the ethylene glycol-distilled water with CNC-based nanofluid has achieved good stability for a month. Ramachandran, Hussein [36] also found similar findings. They find that the ultrasonic process prolongs the stability of the nanofluid for up to 3 months.…”

Section: Resultssupporting

confidence: 60%

Characterisation, Performance and Optimisation of Nanocellulose Metalworking Fluid (MWF) for Green Machining Process

Mahendran

Kananathan

Kadirgama

et al. 2021

IJAME

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The present research attempts to develop a hybrid coolant by mixing alumina nanoparticles with cellulose nanocrystal (CNC) into ethylene glycol-water (60:40) and investigate the viability of formulated hybrid nanocoolant (CNC-Al2O3-EG-Water) towards enhancing the machining behavior. The two-step method has been adapted to develop the hybrid nanocoolant at various volume concentrations (0.1, 0.5, and 0.9%). Results indicated a significant enhancement in thermal properties and tribological behaviour of the developed hybrid coolant. The thermal conductivity improved by 20-25% compared to the metal working fluid (MWF) with thermal conductivity of 0.55 W/m℃. Besides, a reduction in wear and friction coefficient was observed with the escalation in the nanoparticle concentration. The machining performance of the developed hybrid coolant was evaluated using Minimum Quantity Lubrication (MQL) in the turning of mild steel. A regression model was developed to assess the deviations in the tool flank wear and surface roughness in terms of feed, cutting speed, depth of the cut, and nanoparticle concentration using Response Surface Methodology (RSM). The mathematical modeling shows that cutting speed has the most significant impact on surface roughness and tool wear, followed by feed rate. The depth of cut does not affect surface roughness or tool wear. Surface roughness achieved 24% reduction, 39% enhancement in tool length of cut, and 33.33% improvement in tool life span. From this, the surface roughness was primarily affected by spindle cutting speed, feed rate, and then cutting depth while utilising either conventional water or composite nanofluid as a coolant. The developed hybrid coolant manifestly improved the machining behaviour.

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Section: Resultssupporting

confidence: 60%

Characterisation, Performance and Optimisation of Nanocellulose Metalworking Fluid (MWF) for Green Machining Process

Mahendran

Kananathan

Kadirgama

et al. 2021

IJAME

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“…This similar phenomenon also observed by Wei, Zou and Li [51]. They found thermal conductivity enhancement is not even with increased volume concentration at a temperature of 20 0 C. Ramachandran et al, [52] studied the thermal properties of water-ethylene glycol based CNC nanofluids and found addition of CNC nanoparticles can improve thermal conductivity and viscosity as well. It was also observed that the increasing temperature enhances thermal conductivity of CNC nanofluids.…”

Section: Thermal Conductivity Analysis Of Nanofluidssupporting

confidence: 69%

Experimental Studies on Thermo-Physical Properties of Nanocellulose–Aqueous Ethylene Glycol Nanofluids

Farhana¹,

Kadirgama²,

Rahman³

et al. 2020

ARMS

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The aim of this experimental research study is to evaluate the thermal behaviour of crystal nanocellulose (CNC) nanofluids. Aqueous ethylene glycol (60: 40; W: EG) used as base fluid and 0.1%, 0.3% and 0.5% volume concentrations were designated here. Crystal nanocellulose nanofluids were prepared by two-step method. Thermal conductivity, viscosity, density, specific heat capacity and pH were assessed with standard measurement method and equipment. In this present work, thermal conductivity of 0.3% CNC nanofluids was increased of about 25% at 80 0 c; viscosity decreased; 0.1% nanofluid exhibit lowest viscosity performance at 80 0 c. In addition to this, 0.5% CNC nanofluid performed better declination of specific heat with increasing temperature up to 70 0 C and lowest error percentage in density measurement. However, some data of the experiments were distracted.

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“…These parameters play a significant role in the enhancement of heat transfer performance and because of improvement of thermal conductivities of nanofluids in this study Nusselt number increased noticeably. There are some reasons behind increasing thermal conductivity of nanofluid that introduced by many studies in the literature [7]- [12], [21] including the Brownian motion of particles, the interaction between particles and liquid layering, ballistic transport of energy carriers. One of the most important reasons to improve the heat transfer performance was the particles effect on developing the hydrodynamic and thermal layers along the channel length.…”

Section: Resultsmentioning

confidence: 99%

Simulation of nanofluids laminar flow in a vertical channel

Kamel

Lezsovits

2018

Pollack Periodica

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In the present study, fully developed laminar flow with forced convection heat transfer of Al 2 O 3 /water and TiO 2 /water nanofluids inside a vertical tube subjected by constant heat flux from the wall was numerically analyzed using Ansys Fluent release 17.2. In this work, the single-phase model was proposed to simulate the water and nanofluids heat transfer characteristics; spherical nanoparticles with a constant diameter equal to 30 nm are used. The study has been carried out on a Reynolds number with ranges (400-2000) and nanoparticles volume concentration up to 1.5%. the results show that the average Nusselt number for nanofluid is higher than that the base fluid (water) especially for TiO 2 /water nanofluid, the Nusselt number increased with increasing Reynolds number and volume concentration in all cases. The enhancement ratio for nanofluids compared to water at different volume friction was studied; the higher improvement is about 3.51% for TiO 2 /water nanofluid with 1.5% volume fraction. Moreover, a study for pressure drop along vertical tube was discussed.

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Thermophysical properties measurement of nano cellulose in ethylene glycol/water

Cited by 33 publications

References 40 publications

Characterisation, Performance and Optimisation of Nanocellulose Metalworking Fluid (MWF) for Green Machining Process

Characterisation, Performance and Optimisation of Nanocellulose Metalworking Fluid (MWF) for Green Machining Process

Experimental Studies on Thermo-Physical Properties of Nanocellulose–Aqueous Ethylene Glycol Nanofluids

Simulation of nanofluids laminar flow in a vertical channel

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