A critical review on the effect of nanorefrigerant and nanolubricant on the performance of heat transfer cycles

Kumar, Ravinder; Singh, Dwesh K.; Chander, Subhash

doi:10.1007/s00231-022-03194-2

Cited by 12 publications

(3 citation statements)

References 130 publications

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“…This is attributed to the fact that heat transfer is fundamentally a surface-related process [5]. Nanolubricants have been widely used in recent years to improve the performance of refrigeration compressors [6][7][8]. Singh et al [9] experimentally verified the effect of addition of multiwalled carbon nanotube (MWCNT) nanoparticles to a lubricant in a refrigeration compressor.…”

Section: Referencementioning

confidence: 99%

Experimental investigation of usage of POE lubricants with Al₂O₃, graphene or CNT nanoparticles in a refrigeration compressor

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Bilen

2023

Beilstein J. Nanotechnol.

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In this study, the use of nanolubricants containing Al2O3, graphene, and carbon nanotubes (CNTs) at different mass fractions in a refrigeration compressor was experimentally investigated. The required electrical power of the compressor was measured to determine the effect of the use of nanolubricants. Nanoparticles used in the preparation of nanolubricants were gradually added to the lubricant to determine the optimum nanoparticle mass fraction for each nanoparticle type. Thus, it was found that the compressor operated safely and efficiently with nanolubricants. Furthermore, the optimum mass fractions were determined to be 0.750% for Al2O3, 0.250% for graphene, and 0.250% for CNTs for operating conditions of this study. As a result, the required electrical power of the compressor decreased by 6.26, 6.82, and 5.55% with the addition of Al2O3, graphene, and CNT nanoparticles at optimum mass fractions of 0.750, 0.250, and 0.250% to the lubricant, respectively, compared to the compressor using pure oil. Moreover, density and dynamic viscosity of the nanolubricant samples used in the experiments were also measured, and their kinematic viscosity, which is an important parameter for lubricants, was calculated. It was determined that the kinematic viscosity continuously increased with increasing nanoparticle fraction. In conclusion, nanolubricants containing nanoparticles above the optimum mass fraction increase the required electrical power of the compressor. It is concluded that nanoparticle fractions should not be used above the optimum value in nanolubricant applications.

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Section: Referencementioning

confidence: 99%

Experimental investigation of usage of POE lubricants with Al₂O₃, graphene or CNT nanoparticles in a refrigeration compressor

Dağıdır,

Bilen

2023

Beilstein J. Nanotechnol.

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“…in the important frequency range of interest, it can be obtained under sea conditions with the help of spectrum analysis technology (that is, it can be determined that the platform is in the form of wave energy. Several computational features of the shock or motion [11][12] .…”

Section: Algorithm Selectionmentioning

confidence: 99%

Hydrodynamic Characteristics of Ocean Engineering Numerical Pool Benchmark Model Relying on Numerical Simulation

2022

FOE

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The development of water resources and energy is increasing day by day, including the exploration and development of marine resources and natural gas. Over the past 30 years of reform and opening up, my country's economic development has made remarkable achievements, high-tech enterprises and power plants have also developed rapidly, and the demand for electricity and resources is also increasing. The purpose of this paper is to study the hydrodynamic characteristics of the numerical pool benchmark model for marine engineering relying on numerical simulation. This paper develops a numerical model for a design reference test case of a semi-submersible platform and predicts the hydrodynamic properties under three typical operating conditions, namely survival and pumping, space acceleration operation, etc. Comparing the dynamic response calculation results with the existing sixth-generation response numerical simulation results, the trend is consistent, which proves that the model is as reasonable and advanced as the reference model. In this paper, the comparative results of numerical simulations are analyzed. The motion performance of the platform and its motion system under different conditions, such as changing the height of the center of gravity, changing the composition of the mooring line, changing the initial pre-tightening angle of the line mooring, and breaking the line under its influence are studied. The results of the difference law of displacement and motion between the platform and the mooring system provide a specific reference for the optimal design of the platform. Experiments show that the maximum relative errors of mooring line tension, heave motion and pitch motion are 13.9%, 7.69% and 11.6%, respectively. From the above calculation results, it can be seen that there is a certain error between the experimental value and the numerical calculation value .

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“…This performance initiates better boiling and condensing heat transfer in the evaporator and condenser components and improves the tribology characteristics of the compressor. Kumar et al [ 15 ] observed that the application of nanoparticles into refrigerants in refrigeration systems increases pool boiling coefficient, two-phase flow heat transfer, coefficient of performance, and energy conservation. A study on the simulation of molecular dynamics to determine the effects of the addition of iron-oxide nanoparticles to ammonia refrigerant by Ref.…”

Section: Introductionmentioning

confidence: 99%

Performance of hydrocarbon refrigerants in a refrigerator with liquid line magnet and CNT nano-lubricant

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Ohunakin,

Oseahon

et al. 2023

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A critical review on the effect of nanorefrigerant and nanolubricant on the performance of heat transfer cycles

Cited by 12 publications

References 130 publications

Experimental investigation of usage of POE lubricants with Al₂O₃, graphene or CNT nanoparticles in a refrigeration compressor

Experimental investigation of usage of POE lubricants with Al₂O₃, graphene or CNT nanoparticles in a refrigeration compressor

Hydrodynamic Characteristics of Ocean Engineering Numerical Pool Benchmark Model Relying on Numerical Simulation

Performance of hydrocarbon refrigerants in a refrigerator with liquid line magnet and CNT nano-lubricant

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A critical review on the effect of nanorefrigerant and nanolubricant on the performance of heat transfer cycles

Cited by 12 publications

References 130 publications

Experimental investigation of usage of POE lubricants with Al2O3, graphene or CNT nanoparticles in a refrigeration compressor

Experimental investigation of usage of POE lubricants with Al2O3, graphene or CNT nanoparticles in a refrigeration compressor

Hydrodynamic Characteristics of Ocean Engineering Numerical Pool Benchmark Model Relying on Numerical Simulation

Performance of hydrocarbon refrigerants in a refrigerator with liquid line magnet and CNT nano-lubricant

Contact Info

Product

Resources

About

Experimental investigation of usage of POE lubricants with Al₂O₃, graphene or CNT nanoparticles in a refrigeration compressor

Experimental investigation of usage of POE lubricants with Al₂O₃, graphene or CNT nanoparticles in a refrigeration compressor