Nanoparticles and nanofluids: Characteristics and behavior aspects

Kugarajah, Vaidhegi; Ojha, Atul Kumar; Hadem, Hushnaara; Dasgupta, Nandita; Mishra, Bhartendu Nath; Ranjan, Shivendu; Dharmalingam, Sangeetha

doi:10.1016/b978-0-12-822858-6.00002-9

Cited by 3 publications

(1 citation statement)

References 142 publications

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“…In addition, higher concentrations result in poor stability [9]- [11]. The benefits of the nanofluids using data from the literature, it has been discovered that, compared to conventional fluids, nanofluids exhibit a significantly greater and substantially temperature-dependent thermal conductivity with enhanced thermophysical and rheological properties, and low sedimentation and agglomeration problems [12].…”

Section: Introductionmentioning

confidence: 99%

Performance study of aluminium oxide based nanorefrigerant in an air-conditioning system

Dilawar¹,

Qayoum²

2022

Res. Eng. Struct. Mater.

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The present issues related to global warming have attracted refrigerants with low Global Warming Potential (GWP). Two of the most promising low-GWP refrigerants, R32 (difluoromethane) and R290 (propane) are flammable. The addition of a flame retardant to R290 or R32 can enhance their flammable characteristics. Trifluoroiodomethane (R13I1) is a flame retardant with an enormously low global warming and can be used as a component of the refrigerant. In addition, dispersing nanoparticles in these refrigerants improves thermal conductivity. Nanorefrigerants are new refrigerants possessing better heat dissipation performance over traditional refrigerants. An ultra-low GWP mixture refrigerant consisting of R32, R161 and trifluoroiodomethane with aluminum oxide (Al2O3) nanoparticles is used in the present study. Simulation Model-based theoretical results of R410a and with R410a/Al2O3, mixture refrigerant (R32, R161 and trifluoroiodomethane) and nanorefrigerant (R32, R161 and trifluoroiodomethane with aluminum oxide nanoparticles) are carried. The study shows the coefficient of performance (COP) of R410a/Al2O3 and M (R32/R161/R13I1)/Al2O3 increased by 47.3% and 89.8% respectively. The power-saving up to 31.8% and 47.2% at a volume concentration of 0.09%. The comparison has been made with reference to the R410a/Al2O3 system. The thermophysical properties of refrigerants have been calculated using REFPROP (NIST properties of fluid reference). The theoretical model-based calculations are computed in MATLAB software. This study provides an insight in providing appropriate refrigerant substitutes for air conditioning systems.

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Section: Introductionmentioning

confidence: 99%

Performance study of aluminium oxide based nanorefrigerant in an air-conditioning system

Dilawar¹,

Qayoum²

2022

Res. Eng. Struct. Mater.

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Fabrication and characterization of electrospun iron oxide magnetic nanoparticles for their application in barrier textiles

Victor

Kugarajah

2022

Journal of Magnetism and Magnetic Materials

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Preparation and Testing of Biodegradable Nanofluids

Trnka

Mokra

Leffler

et al. 2022

2022 International Conference on Diagnostics in Electrical Engineering (Diagnostika)

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Inseparable part of the high voltage transformers is electro insulating liquid. As known, for one hundred years are used mainly mineral oil based insulating fluids since having good electrical and physical properties and being relatively cheap. Over the years other liquids has been considered/used as replacement to mineral oils such as polyfluorobiphenyls (PFB), poly-chlorobiphenyls (PCB), silicones, synthetic esters, gas to liquid (GTL), etc. This paper and research is dealing with testing of modern biodegradable and sustainable oil Envitrafol and its improvements by nanoparticles. As known natural ester-based electro insulating fluids are polar substances with relatively high viscosity and corresponding properties. This paper is focusing on the study of the impact of the modification of natural ester-based fluid by nanoparticles on breakdown voltage (BDV).

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Nanoparticles and nanofluids: Characteristics and behavior aspects

Cited by 3 publications

References 142 publications

Performance study of aluminium oxide based nanorefrigerant in an air-conditioning system

Performance study of aluminium oxide based nanorefrigerant in an air-conditioning system

Fabrication and characterization of electrospun iron oxide magnetic nanoparticles for their application in barrier textiles

Preparation and Testing of Biodegradable Nanofluids

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