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Experimental analysis of Al2O3/TiO2 nano composite particles in domestic refrigerator

. Satya Purush, Happy Srivastava and Devendra Singh


Abstract

In this research, an experimental study of a home refrigerator employing R134a as its working fluid and various concentrations of TiO2, Al2O3 and nano composite particles distributed in polyolester (PE) oil lubricant is presented. The PE oil was mixed with all the nanoparticles (NPs) at a volume concentration of 0.1g/L. The experiments are carried out for various compositions, such as R134a with PE oil, R134a with nano lubricant, and R134a with nano composite lubricant. Pressure and temperature measurements from different gauges and sensors that are connected to the system were used as the basis for the analysis. Results indicate that R134a with nano composite lubricant provides the best performance. This combination results in the smallest power consumption of 90.8 W, the maximum actual COP of 2.31, and the smallest compressor work of 61.22 kJ/kg. Therefore, it is advised to use this nano composite fluid mixture as lubricant in household refrigerators.

Keywords:  TiO2 nano particle, Al2O3 nano particle, Domestic refrigerator

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