CFD CO2 Cu nanofluids HFO HVAC LaFe13 ? x ? yCoxSiy LiBr-H2O LiCl-H2O P-? indicator diagram R-410A absorption refrigeration system acetoxy silicone rubber artificial neural network artificial neural network (ANN) barocaloric calculation model caloric cooling chiller energy consumption coefficient of performance distillation domestic refrigeration system eddy currents ejector refrigeration technology energy consumption energy efficiency ethylene-glycol nanofluids exergy analysis experimental gadolinium heat pump