Performance evaluation of refrigeration system using nano-fluid

Kumar, S Vinod; Kanimozhi, B.; Kumar, M. Sunil

doi:10.1016/j.matpr.2020.12.339

Cited by 9 publications

(8 citation statements)

References 6 publications

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“…The first one evaluates the performance of vapor compression refrigeration system based on nano-refrigerant and nanolubricant and the second one evaluates basic properties of nano-refrigerant and nano-lubricant such as thermal conductivity, viscosity, specific heat and density. Vijaya Kumar et al (2021) evaluated the performance of refrigerator based on nano-lubricants consisting of an Aluminum di oxide an average diameter 205 nm to 40 nm added to polyolester oil, 60 g of R602a was used as a refrigerant. The results showed that the refrigerating effect increased by 6.09%, the compressor work reduced by 15.78% and the COP increased by 20.09% as compared to the conventional system without nanoparticles (Vijaya Kumar et al, 2021).…”

Section: Literature Reviewmentioning

confidence: 99%

“…Also, it has not been observed an increase or decrease in power consumption, which shows that nanoparticle was completely dissolved in the refrigerant (Pandey, 2017). Kumar et al (2021) evaluated the performance of VCRs based on nano refrigerants consisting of R600a + 0.20 g Al2O3, R600a + 0.30 g Al2O3 and R600a + 0.40 g Al2O3, with average size of Al2O3 was 20 t0 30 nm. The results showed that Al2O3 improved COP by 3.68% to 11.05% and reduced the power consumption by 13.6 to 30.4% (Kumar et al, 2021).…”

Section: Literature Reviewmentioning

confidence: 99%

“…Kumar et al (2021) evaluated the performance of VCRs based on nano refrigerants consisting of R600a + 0.20 g Al2O3, R600a + 0.30 g Al2O3 and R600a + 0.40 g Al2O3, with average size of Al2O3 was 20 t0 30 nm. The results showed that Al2O3 improved COP by 3.68% to 11.05% and reduced the power consumption by 13.6 to 30.4% (Kumar et al, 2021). Thermal conductivity is the most important among of Thermophysics properties of nanorefrigerants due to its effects on the boiling and convective heat transfer coefficients.…”

Section: Literature Reviewmentioning

confidence: 99%

“…This explains why most researchers are focusing on studying thermal conductivity. Recently interest in the study of viscosity has begun to appear to extend to the other Thermophysics properties to form a clear idea of the heat transfer properties (Kumar et al, 2021). Kedzierski et al (2017) evaluated of Thermophysics properties of nano-lubricants based on nanoparticle size diameter 127 nm and 135 nm of Al2O3 and ZnO respectively mixed with POE oil at atmospheric pressure with temperature ranging from 288 to 318 K and various mass fractions of Al2O3, ZnO were used such as 15 wt.%, 20 wt.%, 25 wt.%, 30 wt.%, 35 wt.%, 38 wt.% and 5.6 wt.%, 15 wt.%, 24.4 wt.%.…”

Section: Literature Reviewmentioning

confidence: 99%

“…By adding nanoparticles into a refrigeration system will improve heat transfer in and thus the performance of refrigeration system will be enhanced. Two methods to add nanoparticles into a refrigeration system either add to the refrigerant or add to the lubricant oil of compressor (Kumar et al, 2021;Vamshi et al, 2021). Mixing of nanoparticles with lubricant oil enhance heat transfer coefficient also reduce the friction between walls of piston and cylinder of the compressor, which increases heat transporting ability, while using of nano refrigerants will make the refrigeration systems efficient by improving the heat transfer characteristics of base fluids and thus reduce the power consumption and also reduces the environmental risks associated with the use conventional refrigerants (Vijaya Kumar et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Evaluation of a Refrigeration System Based on Nano-Refrigerants and Nano-Lubricants

Mohamed¹,

Çamdalı²,

Actas³

2021

American Journal of Engineering and Applied Sciences

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Most of studies reported that disperse nanoparticles into refrigerants and lubricating oils lead to improve a coefficient of performance, due to improvement of thermal physics properties of a pure fluid, which leads to reduced energy consumption. Using nanoparticles in a refrigeration system is associated with many difficulties such as the cost of preparing and obtaining a stable and homogeneous mixture for a longer time with less agglomeration and sedimentation. In this research, nanoparticles were prepared as a mixture in an inexpensive and easy way consisting of copper and cerium oxides for the first time, with suitable average diameter to verify the possibility of overcoming the problem of stability of nanoparticles for a longer time with refrigerant. As most studies focus on improving the thermal properties of a refrigerant by using high thermal conductivity nanoparticles, while this study focuses on improving both of thermal conductivity of refrigerant and stability of nanoparticles with a refrigerant. Some studies have reported on the use of copper oxide and its effect on improving the performance of refrigeration system, but cerium oxide has not been used in refrigeration systems and this research will open the door to cerium oxide as a single material and as a mixture with copper oxide to verify the possibility of this oxide to create greater stability of nanoparticles and improve thermal properties.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%