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This paper studies the experimental performance of the energetic characteristics of a slightly modified domestic refrigerator infused with nano-lubricant containing different concentrations of Al 2 O 3  (at 0, 0.2, 0.4 and 0.6 g/L) with liquefied petroleum gas (LPG) charge of 40g. Parameters investigated were power consumption, cooling capacity, coefficient of performance (COP), discharge temperature, volumetric refrigerating capacity (VRC) and pressure ratio. The findings showed that when the nano-based lubricants were compared with pure oil, the power at 0.6g/L concentration, gave the best performance of 67.01W, at different time over 180 minutes’ periods. The discharge pressure of the system when compared to pure-oil at 0.6g/L concentrations exhibited acceptable value of 616. 33kPa. For the cabinet temperature, it was seen that the 0.6g/L had the lowest recorded temperature of -8.7°C after 180 minutes. With the coefficient of performance, the 0.2g/L concentration had the highest average performance of 2.239 at 180 minutes. The highest average performance of 174.225 kW over 180 minutes was found as the refrigerating capacity at 02.g/L concentration. The nano-lubricant can be concluded to work safely in the refrigerator but better optimization in nano-application will still be needed for better results.

journal of physics. conference series

Experimental Performance of the Energetic Characteristics of a Domestic Refrigerator with Al<sub>2</sub>O<sub>3</sub> Nanolubricant and LPG Refrigerant

Experimental Performance of the Energetic Characteristics of a Domestic Refrigerator with Al2O3 Nanolubricant and LPG Refrigerant

Experimental Performance of the Energetic Characteristics of a Domestic Refrigerator with Al₂O₃ Nanolubricant and LPG Refrigerant