Simulation of Heat Exchangers of a Window Air Conditioner Retrofitted with R-407C

摘要

This paper presents simulation results for the heat exchangers of an HCFC-22 window air conditioner retrofitted with R-407C. The test conditions are per the Indian Standard IS 1391 (1992) for unitary air conditioners. The simulation was carried out using EVAP-COND, a heat exchanger model developed by NIST. A typical Indian window air conditioner of capacity 5.13 kW (1.5 TR) was selected for the study. The performance of the heat exchangers with R-407C is compared with the baseline performance with HCFC-22. The simulation results are validated by comparing to experimental data for a window air conditioner retrofitted with R-407C. The assessment parameters are temperatures of refrigerant and air, and refrigerant pressures and pressure drops.