Performance analysis of SiO 2 /PAG nanolubricant in automotive air conditioning system

Sharif, M. Z.; Azmi, W.H.; Redhwan, A. A. M.; Mamat, Rizalman; Yusof, Taib Mohd

doi:10.1016/j.ijrefrig.2017.01.004

Cited by 100 publications

(17 citation statements)

References 24 publications

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“…Thus, by adding nanoparticle to the lubricant improves its thermophysical properties, heat transfer rates, and by which enhances the effectiveness of the system. Performance improvement of the refrigeration system by adopting nanolubricants is also reported in certain research works 22–25 . It is also reported that the pool boiling characteristics of the nanolubricant/nanorefrigerant mixture is prominently affected by the fluid viscosity 26,27 .…”

Section: Introductionmentioning

confidence: 73%

“…SiO 2 nanoparticles were selected for this study as they are less toxic, chemically safe and stable, and cheaper when compared with other oxide nanoparticles of the same shape and size. Also, it has excellent biocompatibility, high‐temperature resistance, and better tribological properties 22–25 . SiO 2 nanoparticles, procured from Sigma‐Aldrich Ltd, USA, with purity 99.5%, with a normal size of 5–20 nm (Transmission electron microscopy, TEM) was taken to synthesize the nanolubricant.…”

Section: Methodsmentioning

confidence: 99%

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The effect of silica nanoparticle on thermal, chemical, corrosive, and the nature‐friendly properties of refrigerant compressor lubricants—A comparative study

Narayanasarma

Kuzhiveli

2020

Asia-Pacific J Chem Eng

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Polyolester (POE) oil and mineral (Min) oil are widely used in household refrigerators as compressors lubricants in India. An experimental calculation on the thermal, chemical, corrosion, and nature-friendly properties of POE oil and Min oil suspended with silica nanoparticles is conducted for confirming its practicality to adopt in refrigeration compressors as nanolubricant. No surfactants were used for synthesizing the nanolubricants. The mass fractions from 0.01% to 0.2% and temperatures from 25 C to 85 C are considered. The thermal conductivity and fire point increased as SiO 2 mass proportions increased. The pour and cloud points decreased, and in the corrosive nature, apparently little effect was observed by adding SiO 2 nanoparticles. The total acid number (TAN) and saponification number increased with the increase in SiO 2 nanoparticle concentration. All the synthesized nanolubricants were biodegradable and a little toxic. Refrigerant compressors with long life, with smooth and safe working are expected using POE oil and Min oil with up to 0.2% SiO 2 (without surfactants) because of augmented thermal properties and less influenced corrosive, chemical, and eco-friendly properties.

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Section: Introductionmentioning

confidence: 73%

Section: Methodsmentioning

confidence: 99%

The effect of silica nanoparticle on thermal, chemical, corrosive, and the nature‐friendly properties of refrigerant compressor lubricants—A comparative study

Narayanasarma

Kuzhiveli

2020

Asia-Pacific J Chem Eng

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“…Besides, absorbance value is found through Uv-vis spectral analysis for specifying the stability condition of nanofluids. The UV-vis spectrophotometer analysis method is also used by other researchers [57][58][59]. Moreover, particle size analyser (Malvern Zetasizer Ultra-DKSH) is employed to measure the zeta potential of nanofluids.…”

Section: Stability Of Nanofluidsmentioning

confidence: 99%

Experimental Investigation on the Stability of 40% Ethylene Glycol Based TiO2-Al2O3 Hybrid Nanofluids

Urmi¹,

Rahman²,

Azmi³

et al. 2020

ARFMTS

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This paper is presented to investigate experimentally on the stability of 40% ethylene glycol-based TiO2-Al2O3 hybrid nanofluids. Recently, the research is more highlighted on the thermophysical-properties of nanofluids. Hence, the stability of the hybrid nanofluids thoroughly assessed in this research work. The study uses the two-step method for preparing 40% ethylene glycol-based TiO2-Al2O3 hybrid nanofluids. The experiment is carried out for the various combination of mixture ratios including 20:80, 40:60, 50:50, 60:40 and 80:20 of TiO2-Al2O3 nanoparticles with a volume concentration of 0.1%. The stability assessment of hybrid nanofluids is accomplished through visualisation effect, transmission electronic microscopic observation, UV-Vis spectrophotometry and zeta potential value from particle size analyser. The findings show the optimum mixing ratios of TiO2-Al2O3 nanoparticles in terms of stability which is further confirmed by Zeta potential and absorbency from UV-Vis spectrophotometry. The results from the study reveal that 80:20 ratio of TiO2-Al2O3 nanoparticles possesses the best uniformity for over 21 days without any noticeable settlement of particles in the colloidal suspension. Moreover, 50:50 and 60:40 ratios show modest stability for almost two weeks while 20:80 and 40:60 ratios of TiO2-Al2O3 nanoparticles show minimum stability along with rapid sedimentation in the dispersion. However, it is also evident that the optimum mixing ratio of TiO2-Al2O3 hybrid nanofluids has excellent stability which will lead to further study on the thermal properties of nanofluids and finally motivate engineers to the real-life application of nanofluids.

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“…% CNT-R113 nanorefrigerant increase to 82%, 104%, 43% and 50%, respectively Tazarv et al [99] TiO 2 /R-141B Enhancement of convective heat transfer coefficient and higher vapour qualities 'nanorefrigerant' that can enhance refrigeration system performance. Several experimental and numerical investigations [56][57][58][59] have concluded that nanorefrigerants improve thermophysical properties, energy efficiency and the overall system performance. For instance, Fig.…”

Section: Nanorefrigerantsmentioning

confidence: 99%

Developments and future insights of using nanofluids for heat transfer enhancements in thermal systems: a review of recent literature

Kaggwa

Carson

2019

Int Nano Lett

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The twenty-first century is experiencing a wave of technologies and innovations making use of unique features of nanofluids, in applications such as industrial and process heating, air conditioning and refrigeration systems, heat pipes, solar energy, thermal storage systems, electronic cooling systems and others. Recent literature indicates that suspending solid nanoparticles in traditional working fluids can enhance heat transfer rates by increasing thermal conductivity and heat transfer coefficients. However, there is a wide variation in the extent of heat transfer enhancements reported in the literature. In this review, which mainly focuses on the research published within the last 5 years, experimental investigations from recent developments of nanofluids usage and performance in various heat transfer systems are summarised. In addition, heat transfer mechanisms in nanofluids, the challenges and future direction of nanofluids regarding heat transfer enhancement are discussed. Popular preparation methods of nanofluids and the models of thermophysical properties such as thermal conductivity and viscosity have been reviewed.

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Performance analysis of SiO 2 /PAG nanolubricant in automotive air conditioning system

Cited by 100 publications

References 24 publications

The effect of silica nanoparticle on thermal, chemical, corrosive, and the nature‐friendly properties of refrigerant compressor lubricants—A comparative study

The effect of silica nanoparticle on thermal, chemical, corrosive, and the nature‐friendly properties of refrigerant compressor lubricants—A comparative study

Experimental Investigation on the Stability of 40% Ethylene Glycol Based TiO2-Al2O3 Hybrid Nanofluids

Developments and future insights of using nanofluids for heat transfer enhancements in thermal systems: a review of recent literature

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