Numerical prediction of dynamic performance of vapour-compression heat pump using new HFC alternatives to HCFC-22

In this study, the dynamic performance of an air-source heat pump using alternatives to HCFC-22 is presented under different conditions. The HFC alternatives covered in this study are: R-407a, R-507, as well as NARM-502. Predicted numerical results of the heat-pump performance have been compared with experimental data under various conditions. The comparison showed that our dynamic model accurately predicted the experimental data. Furthermore, our proposed model was employed to predict the dynamic performance key parameters, such as cooling, heating capacities, COPs, pressures and temperatures at the system components, using new alternatives to HCFC-22.