Effect of Ambient Temperature on Thermodynamic Performance of a Split Type Air Conditioner

Abstract

This study investigates the effect of ambient temperature (${\mathrm{T}}_{0}$) on the thermodynamic performance of a split type air conditioner. The analysis was carried out with three different refrigerants R410A, R32, and R454B by varying ${\mathrm{T}}_{0}$ from 25 °C to 40 °C. The simulation was performed to obtain volumetric cooling effect (VCE), COP and exergy destruction at different ${\mathrm{T}}_{0}$. The refrigerant R32 produced 8 to 13.6% and 11.9 to 14.2% higher VCE than that of R410A and R454B respectively. The COP of R410A reduced from 5.9 to 3.17 respectively. R32 and R454B showed almost the same reduction in COP from 6.06 to 3.3. For both R32 and R454B, the exergy efficiency $({\upeta }_{\mathrm{ex}})$ increased by 6% with ${\mathrm{T}}_{0}$ rising from 25 to 40 °C, while an increase of 5% was found with R410A. The refrigerants R32 and R410A showed the lowest (18.66%) and greatest (22.27%) falls respectively in II law efficiency.