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<p>In vapor-compression refrigeration system (VCRS), liquid refrigerants are used to absorb heat from space and release it elsewhere. The major drawback of this system is more energy consumption, which can be minimized by introducing the nanoparticles. In this work, the influence of the hybrid Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub> nanoparticles with R600a refrigerant was experimentally evaluated. Experiments were conducted using 0, 0.2, and 0.4&#xa0;g L<sup>–1</sup> concentrations of Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub> hybrid nanoparticles. Coefficient of performance (COP), compressor power consumption, and the cooling effect were evaluated. VCRS that used 0.4&#xa0;g L<sup>–1</sup> of the hybrid Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub> nano-refrigerant performed the most effectively with a 25.01% increase in COP, a 20.83% increase in refrigeration effect, and a reduced compressor power requirement. Thus, it was observed that the hybrid Al<sub>2</sub>O<sub>3</sub>/TiO<sub>2</sub> nanoparticles-loaded refrigerants have high potential to raise the overall COP of the VCRS.</p>

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Performance evaluation of a vapor-compression refrigeration system with r600a refrigerant and alumina and titanium dioxide hybrid nano-lubricants

  • 期刊论文

  • 发表日期：

    2025年12月27日

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  • Purusothaman Mani,
  • Coumaressin Thangarasu,
  • Hemanandh Janarthanam,
  • Praveen Barmavatu,
  • Jatoth Heeraman,
  • Hussein Togun,
  • Ramalinga Viswanathan Mangalaraja

摘要

In vapor-compression refrigeration system (VCRS), liquid refrigerants are used to absorb heat from space and release it elsewhere. The major drawback of this system is more energy consumption, which can be minimized by introducing the nanoparticles. In this work, the influence of the hybrid Al2O3/TiO2 nanoparticles with R600a refrigerant was experimentally evaluated. Experiments were conducted using 0, 0.2, and 0.4 g L–1 concentrations of Al2O3/TiO2 hybrid nanoparticles. Coefficient of performance (COP), compressor power consumption, and the cooling effect were evaluated. VCRS that used 0.4 g L–1 of the hybrid Al2O3/TiO2 nano-refrigerant performed the most effectively with a 25.01% increase in COP, a 20.83% increase in refrigeration effect, and a reduced compressor power requirement. Thus, it was observed that the hybrid Al2O3/TiO2 nanoparticles-loaded refrigerants have high potential to raise the overall COP of the VCRS.