Simulation and performance analysis of a carbon dioxide air cooling system is made. The air cooling system using carbon dioxide consists of compressor, gas-cooler, expansion device and evaporator. Loss and efficiency model is applied for compressor an...
Simulation and performance analysis of a carbon dioxide air cooling system is made. The air cooling system using carbon dioxide consists of compressor, gas-cooler, expansion device and evaporator. Loss and efficiency model is applied for compressor analysis and effectiveness-NTU method is utilized for heat exchanger analysis. Changing compressor outlet pressure, gas-cooler inlet air temperature or evaporator inlet air temperature, its effect on system performance is examined. It is found that there is an optimum compressor outlet pressure which gives a maximum COP. It is also noted that COP decreases as the gas-cooler inlet air temperature increases and as the evaporator inlet air temperature decreases.