International Journal of Recent Technology and Engineering (IJRTE) ISSN: 2277-3878, Volume-8 Issue-3, September 2019 730 Published By: Blue Eyes Intelligence Engineering & Sciences Publication Retrieval Number: C3986098319/19©BEIESP DOI:10.35940/ijrte.C3986.098319 Abstract: In general, mineral oil and polyester oil are used as lubricants in a refrigeration system compressor. The present work focuses mainly on the mineral oil based lubricant based on MWCNT nanoparticles. The different characterization of the multi-wall carbon nanotube (MWCNT) was performed using different methods such as Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), and Transmission Electron Microscopy (TEM), which will result in size, structure and morphology of the CNT nanoparticle. First prepare the Nano-lubricants by adding nanoparticles in mineral oil with different concentrations of 0.05, 0.075 and 0.1wt% with the help of an ultrasonicator which will give the homogeneous mixture of Nanolubricant. Nanoparticles mixed with mineral oil used in a refrigeration system work safely and normally. The experiment were conducted on refrigeration system for different concentration, namely 0.05, 0.075 and 0.1wt% which will mixed with mineral oil and without nanoparticles in mineral oil. The result shows that 0.1wt% Nanolubricant which will give higher improvement in heat transfer efficiency and increase in the Coefficient of Performance (COP) by 37%. And energy savings is 9.6%. Keywords: Nanoparticle, Nanolubricant, Refrigeration system. I. INTRODUCTION Lubricants increase the performance of a system in different ways when Nanoparticles are added in base fluid. The improved critical parameters are anti-friction, anti-wear, anti-corrosion, extreme pressure, detergent and antioxidant. With the increase in difficulties in operating conditions and the growth of technology, together with the increase in lubrication requirements. Nanoparticles are considered the most possible prospect to meet these needs. The performance of composite materials, oils, fluids, etc. Nanolubricants are a relatively new type of fluids which contain a Nanoparticle of size 1 – 100 nm and base fluid [1]. The capacity of the nanoparticles dispersed in the POE oil reduces the compressor's energy consumption, increases the heat transfer capacity and provides better system performance. The performance coefficient of the system with only polyol-etster oil is used in the compressor and therefore the different Revised Manuscript Received on September 15, 2019 Devendra, Pursuing M. Tech in Thermal Power Engineering , Department of Mechanical Engineering, Nitte Meenakshi Institute of Technology, Bengaluru. Raviprakash M, Associate Professor in the department of Mechanical Engineering at Nitte Meenakshi institute of technology Bengaluru. N. Kapilan, Professor and HOD in the department of Mechanical Engineering at Nagarjuna College of Engineering and Technology, Bengaluru. Shiv Pratap Singh Yadav, Assistant Professor in the Department of Mechanical Engineering at Nitte Meenakshi Institute of Technology Bengaluru. weight of the nanoparticles is mixed in POE oil and transfer into the compressor of refrigerator to perform the experiment. In their study, the selected refrigerant is R134a and the nanoparticles are Al2O3 and TiO2 [2]. Lee et al. (2009) state that there is an enhancement in lubrication features when refrigeration contains mineral oil containing 0.1 vol. % of fullerene nanoparticles. Bi et al. (2008) have studied that the 0.1% mass fraction of the TiO2 nanoparticles in R134a and the ester polyol oil (POE) systems are used to reduce power consumption by about 26%. It is challenging because the fluid undertakes a phase change in each cycle. II. LITERATURE SURVEY Pawl et al. [1] achieved some studies on nanofluids and found that there was using of nanofluid increase in thermal conductivity compared to base fluid. It has also been discovered that the addition of nanoparticle results reduces energy consumption and increases critical heat flow. Bi et al. [2] in this work, the performance and reliability of a domestic refrigerator have been experimentally studied using nanoparticles as a working fluid. The TiO2 nanoparticles were used with a mixture of mineral oil as a lubricant instead of the polyol ester oil (POE) in the HFC134a refrigerator. He also showed that using nanoparticles in household refrigerators to reduce energy consumption. Saidur et al. [3] in this work, he examined that the physical-thermal properties of the nanoparticles were suspended in the lubricating oil and refrigerant of the refrigeration system. Along with these, the performance of boiling heat transfer of the carbon nanotube refrigerant pool (CNT) was reported. Nano refrigerants have been found to have a higher thermal conductivity and are very temperature-dependent at very low particle concentrations compared to conventional refrigerants. Abbas m et al. [5] in this work, it focuses mainly on the nano-based CNT lubricant in the refrigeration system because the CNT nanoparticle has a large thermal conductivity. Thus it improves the heat transfer coefficient and reduces energy consumption. The results show that 0.1% by weight of CNT nanoparticles has the maximum improvement in heat Transfer and increases the Coefficient of Performance (COP) by 4.2%. III. NANOPARTICLE SELECTION AND CHARACTERIZATION The Thermo physical properties of nanoparticle (MWCNT powder) Performance of Vapor Compression Refrigeration System using Nanoparticles – Based Mineral Oil Lubricant Devendra, RaviPrakash M, N. Kapilan, Shiv Pratap Singh Yadav