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<p>Domestic refrigerators are essential to daily life, but as the population grows and living standards rise, their power consumption rises as well, driving up demand and energy costs. Therefore, one of the main areas of research is controlling the amount of power used by home refrigeration systems. The goal of this project is to use nanotechnology to refrigeration in order to improve system performance and lower the electrical energy consumption of residential refrigerators. Specifically, nano-refrigerants were developed by dispersing aluminum oxide (Al₂O₃) and cerium oxide (CeO₂) nanoparticles into R134a refrigerant. Five nano-refrigerant variants (R1 to R5) were synthesized, and their thermal conductivity was analyzed. The system’s performance was assessed based on key parameters, including refrigeration effect, compressor power, coefficient of performance (COP), and suction/discharge temperatures and pressures. The results demonstrated that the R1 nano-refrigerant exhibited the highest thermal conductivity (0.02&#xa0;W/m·K), a 42.8% improvement over the base refrigerant (R0). Additionally, R1 achieved a maximum refrigeration effect of 58&#xa0;W, which is 7.8% higher than R0, and recorded the highest COP of 3.11, reflecting a 17.4% increase. Furthermore, all nano-refrigerants (R1–R5) showed reduced suction and discharge temperatures and pressures compared to R0, indicating enhanced thermodynamic efficiency. These results imply that nano-refrigerants may be able to simultaneously lower energy usage and enhance refrigeration system performance.</p>

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Performance analysis of a domestic refrigerator using hybrid nanoparticle-enhanced refrigerants

  • 期刊论文

  • 发表日期：

    2025年10月16日

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  • T. Raja Jeyaseelan,
  • D. Velmurugan,
  • M. Sivaprakash,
  • J. Bensam Raj

摘要

Domestic refrigerators are essential to daily life, but as the population grows and living standards rise, their power consumption rises as well, driving up demand and energy costs. Therefore, one of the main areas of research is controlling the amount of power used by home refrigeration systems. The goal of this project is to use nanotechnology to refrigeration in order to improve system performance and lower the electrical energy consumption of residential refrigerators. Specifically, nano-refrigerants were developed by dispersing aluminum oxide (Al₂O₃) and cerium oxide (CeO₂) nanoparticles into R134a refrigerant. Five nano-refrigerant variants (R1 to R5) were synthesized, and their thermal conductivity was analyzed. The system’s performance was assessed based on key parameters, including refrigeration effect, compressor power, coefficient of performance (COP), and suction/discharge temperatures and pressures. The results demonstrated that the R1 nano-refrigerant exhibited the highest thermal conductivity (0.02 W/m·K), a 42.8% improvement over the base refrigerant (R0). Additionally, R1 achieved a maximum refrigeration effect of 58 W, which is 7.8% higher than R0, and recorded the highest COP of 3.11, reflecting a 17.4% increase. Furthermore, all nano-refrigerants (R1–R5) showed reduced suction and discharge temperatures and pressures compared to R0, indicating enhanced thermodynamic efficiency. These results imply that nano-refrigerants may be able to simultaneously lower energy usage and enhance refrigeration system performance.