Performance Studies on Vapour Compression Refrigeration System using Hybrid Nano lubricants

Abstract

The household refrigerator is present in all homes with the newlineobjective to preserve all food products. The vapour compression newlinerefrigeration cycle is the most frequently used refrigeration cycle in newlinehousehold refrigerators. The four primary elements of a vapour newlinecompression system are the compressor, condenser, evaporator, and newlineexpansion valve. The refrigerator is operated by a vapour compression newlinerefrigeration cycle. The compressor initially compresses the refrigerant newlinevapour. The hermetic compressor is a unique type of compressor. A newlinesealed enclosure that houses both the electrical motor and the operating newlinecompressor. The compressor is the main power-consuming device and is newlinedriven by an electric motor. The domestic refrigerator utilizes R600a newlinerefrigerant as a working fluid. R600a, also known as isobutane, is the newlinereplacement for R134a and R12 and is utilized in different kinds of hightemperature newlinerefrigeration applications. Because of its limited potential to newlinecause global warming, isobutane has gained popularity. newlineThe lubricating oil in the compressor minimizes the moving newlineparts and bearing friction wear, which in turn reduces the refrigerant gas newlinetemperature during compression. Mineral oil provides benefits such as newlineincreased adaptability with seals, greater dissolution with additives, and newlinea cheaper cost. Introducing nanoparticles in compressor oil leads to newlinenanolubricants, which reduce friction to a greater extent and result in newlinebetter compressor work compared to normal refrigerators. newlineIn recent years, the properties of nanoparticles suspended in newlinebase fluid have significantly improved. The nanoparticles are dispersed newlinevi newlinein the compressor lubricating oil in the refrigeration system. The newlineimportance of adding individual nanoparticles to lubricating oil increases newlinethe cooling effect and COP and lowers compressor energy consumption. newlineThe nanoparticle is shown to have high compatibility with lubricants and newlineimprove the characteristics of base fluids.