Improving the performance of refrigeration systems by using nanofluids: A comprehensive review

Bhattad, Atul; Sarkar, Jahar; Ghosh, Pradyumna

doi:10.1016/j.rser.2017.10.097

Cited by 150 publications

(46 citation statements)

References 130 publications

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“…With the increase in the mass flow rate, the Reynolds number and, hence, HTC increase. It also augments with hybrid nanofluid due to the relative motion between the base fluid and nanoparticle, resulting in the self-circulation of the nanoparticles acting as a heat carrier [25]. A maximum enrichment of 20.4% has been observed in HTC for the hybrid nanofluids.…”

Section: Methodsmentioning

confidence: 99%

Hydrothermal performance of plate heat exchanger with an alumina–graphene hybrid nanofluid: experimental study

Bhattad

Sarkar

2020

J Braz. Soc. Mech. Sci. Eng.

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An experimental investigation is conducted with graphene-Al 2 O 3 hybrid nanofluid as a coolant in corrugated surface plate heat exchanger to study energetic performance. The combinations studied are Al 2 O 3-graphene in 4:1 nanoparticle ratio and 100% Al 2 O 3 nanoparticle with 0.01 v % concentration in DI water. Effect of coolant flow rates (2.0-4.0 lpm) and coolant inlet temperatures (10-25 °C) on various factors like coolant outlet temperature, heat transfer rate, convective heat transfer coefficient, pressure drop, and heat transfer coefficient to pressure drop ratio has been investigated. Maximum enhancements of around 2.5%, 5.34%, 25.36%, and 23.8% are observed in the coolant outlet temperature, heat transfer rate, heat transfer coefficient, and heat transfer coefficient to pressure drop ratio, respectively, for Al 2 O 3-graphene hybrid nanofluid.

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Section: Methodsmentioning

confidence: 99%

Hydrothermal performance of plate heat exchanger with an alumina–graphene hybrid nanofluid: experimental study

Bhattad

Sarkar

2020

J Braz. Soc. Mech. Sci. Eng.

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“…7. A schematic view of a single slope solar still with internal and external reflectors [18] Over the last two decades, nanoparticles and nanofluids have opened a new window to enhance the efficiencies of various thermal systems [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34]…”

Section: Figmentioning

confidence: 99%

A concise review on the role of nanoparticles upon the productivity of solar desalination systems

Rashidi

Karimi

Mahian

et al. 2018

J Therm Anal Calorim

139

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In recent years, nanofluids have been widely used to improve the performance of various energy systems due to their favourable thermo-physical and optical characteristics. In particular, solar distillation systems, as an affordable and reliable technique to provide freshwater, have benefited from nanofluid technology. This article performs a review of literature on the implementation of nanofluid technology in active and passive solar distillation systems. The progress made and the existing challenges are discussed and some conclusions and suggestions are made for future research. The review indicates that the daily productivities of solar distillation systems enhance by using nanofluid and increasing the volume fraction of nanoparticles. However, long-term operational stability and life cycle assessment remain critical issues. These factors should be considered for future research in this field.

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“…Recently, we can note increasing the interest in studying the prospects of nanofluids as working fluids of vapor compression refrigeration equipment (solution of refrigerant/compressor oil/nanoparticles) and as coolants (heat transfer fluids containing nanoparticles) [1][2][3][4][5]. Therefore, the problem of experimental investigation and predicting of nanofluids thermophysical properties promising for refrigeration is of current importance.…”

Section: Introductionmentioning

confidence: 99%

The relationship between the surface tension and the saturated vapor pressure of model nanofluids

Khliyeva

Ivchenko

Khanchych

et al. 2019

RET

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Information on surface tension is necessary for modeling boiling processes in nanofluids. It was shown that the problem of predicting the surface tension of complex thermodynamic systems, such as nanofluids, remains outstanding. It should be noted that the surface tension of liquids and the saturated vapor pressure are due to a specific intermolecular interaction in the region of spatial heterogeneity of the substance (surface layer). Moreover, the compositions of the surface layer of nanofluid and its liquid phase are not equal. The presence of nanoparticles in the base fluid affects the composition of the surface layer of liquids. However, there are no methods for determining the composition of the surface layer of nanofluids and this fact complicates establishing the dependence of the surface tension on the state parameters of nanofluids. It should be mentioned that the number of possible methodological errors in measurements of the saturated vapor pressure of nanofluids is significantly lower than for the surface tension measurements. Therefore, in the development of models for predicting the surface tension, scientific and practical interest has establishing the relationship between the surface tension and the saturated vapor pressure of nanofluids. In the presented work, we consider the nanofluids of isopropanol/Al 2 O 3 nanoparticles and o-xylene/fullerenes C 60 . Saturated vapor pressure and surface tension of nanofluids of isopropanol/Al 2 O 3 nanoparticles have been studied in the temperature range 293 -363 K and concentrations of Al 2 O 3 nanoparticles 0-8.71 g/kg. Measurement of saturated vapor pressure and surface tension of nanofluids of o-xylene/fullerenes C 60 have been performed in the temperature range 283 -348 K and the concentration of C 60 0-7.5 g/kg. It is shown that additives of Al 2 O 3 nanoparticles and fullerenes C 60 lead to a decrease in the surface tension and increase in the saturated vapor pressure. It is shown that there is a universal dependence between the reduced surface tension and saturated vapor pressure for the researched nanofluids.

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Improving the performance of refrigeration systems by using nanofluids: A comprehensive review

Cited by 150 publications

References 130 publications

Hydrothermal performance of plate heat exchanger with an alumina–graphene hybrid nanofluid: experimental study

Hydrothermal performance of plate heat exchanger with an alumina–graphene hybrid nanofluid: experimental study

A concise review on the role of nanoparticles upon the productivity of solar desalination systems

The relationship between the surface tension and the saturated vapor pressure of model nanofluids

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