THERMAL SCIENCE

International Scientific Journal

Vinod Shewale

,

Arvind A. Kapse

,

Vijay R. Sonawane

EXPERIMENTAL ANALYSIS OF VAPOUR COMPRESSION REFRIGERATION SYSTEM USING NANO LUBRICANT WITH REFRIGERANT R-134A

ABSTRACT
It has been proved that due to addition of nanoparticals to the refrigerant results in improvement in thermophysical properties and heat transfer characteristics of the primary refrigerant, which improves the COP of the refrigeration system. In this experimental analysis of vapour compression system, the performance study has been carried out by preparing the nanolubricant. In this experimental study, three cases are considered. The compressor of the system filled with pure polyolester (POE) oil, SUNISO-3GS oil and POE + TiO2 nanoparticles as lubricant. In the nanolubricant, the volume concentration of the nanoparticles is 0.2%. The experimental study shows that vapour compression refrigeration sys-tem works smoothly with nanorefrigerant. In this experimental study, it has observed that when nanolubricant used in place of traditional POE oil, the refrigerating effect has been increased and the compressor power consumption has reduced by 27% and the refrigeration system COP improves by 29%. The analysis shows that the enhancement factor in the evaporator is 1.2 when nanorefrigerants are used instead of pure refrigerant. The properties of refrigerant like thermal conductivity and density are also studied for the nanolubricant by using the Labview software, in which the thermal conductivity and the density of R134a and nanolubricant mixture are observed higher in comparison with the R134a and pure lubricant mixture.
KEYWORDS
VCRS, R-134a, Nanolubricant, coefficient of performance
PAPER SUBMITTED: 2023-11-22
PAPER REVISED: 2023-12-18
PAPER ACCEPTED: 2024-02-06
PUBLISHED ONLINE: 2024-04-14
DOI REFERENCE: https://doi.org/10.2298/TSCI231122086S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 5, PAGES [3687 - 3697]
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Experimental analysis of vapour compression refrigeration system using nano lubricant with refrigerant R-134a

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence