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The study examines the influence of hybrid nano CNT/ZrO2 lubricants mixed with PAG oil on the performance of domestic refrigeration systems. The primary objective is to enhance efficiency and minimize energy expenditure of household refrigerator systems. An eco-friendly refrigerant R-600a is used as the working fluid. Experiments were done The nanolubricant compositions tested include 20% CNT and 80% ZrO2, 40% CNT and 60% ZrO2, 60% CNT and 40% ZrO2, and 80% CNT and 20% ZrO2 at 0.2 g/L while maintaining a constant refrigerant charge of 150g. In this study, the compressor energy consumption, refrigeration effect, and coefficient of performance (COP) were analyzed in domestic refrigeration trainer kit. When the inclusion of different composition of hybrid nanolubricant improves refrigeration system performance was observed for 80% CNT and 20% ZrO2 inclusion by achieving a maximum of refrigeration effect of 380W, a compressor work reduction of 18%, and a 28% increase in the coefficient of performance.

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Performance Improvement and Energy Savings in Domestic Refrigeration Systems Using CNT/ZrO2 Nanoparticle Incorporated in PAG Oil

  • 会议论文

  • 发表日期：

    2026年

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  • Kumaran Palani,
  • Tesfaye Barza Zema

摘要

The study examines the influence of hybrid nano CNT/ZrO2 lubricants mixed with PAG oil on the performance of domestic refrigeration systems. The primary objective is to enhance efficiency and minimize energy expenditure of household refrigerator systems. An eco-friendly refrigerant R-600a is used as the working fluid. Experiments were done The nanolubricant compositions tested include 20% CNT and 80% ZrO2, 40% CNT and 60% ZrO2, 60% CNT and 40% ZrO2, and 80% CNT and 20% ZrO2 at 0.2 g/L while maintaining a constant refrigerant charge of 150g. In this study, the compressor energy consumption, refrigeration effect, and coefficient of performance (COP) were analyzed in domestic refrigeration trainer kit. When the inclusion of different composition of hybrid nanolubricant improves refrigeration system performance was observed for 80% CNT and 20% ZrO2 inclusion by achieving a maximum of refrigeration effect of 380W, a compressor work reduction of 18%, and a 28% increase in the coefficient of performance.