Improving The Performance of Cascade Vapor Refrigeration System by Using Al2O3 Nanoparticles

The utilization of cascade refrigeration systems in the frozen food industry has proven advantageous, as they offer improved reliability compared to two-stage refrigeration systems. This study focuses on inspecting the application of nanoparticles in cascade refrigeration system. This research is done to assess the impact of nanoparticles on refrigeration capacity, compressor power, and coefficient of performance (COP). Al
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nanoparticles with mass concentration of 0.1% and 0.2%. The system employed by R-134a and R-410a in the high and low circuits respectively. The system analysis was conducted with varying concentrations of nanoparticles Al
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in the R134a circuit. The presence of nanoparticles in the system led to increased refrigeration capacity, significant decrease on compressor powers and the system COP improved by 40.7%.