Irreversibility Analysis of R407C, R404A, and R134A as an Alternatives of R22 in Vapor Compression Chiller under Cycling Conditions

This paper presents irreversibility analysis using experimental data from vapor compression chiller system using R22, R407C, R404A and R-134A as working fluids. The system operated under cycling condition, which allowing the water to circulate in the evaporator and recording data every ten minutes. Further, the experimental study was conducted at different water and ambient temperature to identify the parameter that cause the energy deterioration. The findings show that the total irreversibility increases at high water mass flow rate. Additionally, high ambient temperature increase the irreversibility of the system. R134A and R407C are a good replacement for R22 in terms of irreversibility analysis during cycling condition.