Thermodynamic Performance Investigation of a Small-Scale Solar Compression-Assisted Multi-Ejector Indoor Air Conditioning System for Hot Climate Conditions

In year-round hot climatic conditions, conventional air conditioning systems consume significant amounts of electricity primarily generated by power plants. A compression-assisted, multi-ejector space cooling system driven low-grade solar thermal energy is investigated in terms and exergy performance, using a real gas property-based ejector model for 36 kW-scale application, exposed to annually high outdoor temperatures (i.e., up 42 °C), four working fluids (R11, R141b, R245fa, R600a). Using the effectively triples operating condenser temperature range single cover annual while compression boosting reduces generator heat input requirement improves overall refrigeration coefficient performance (COP) factors ~3–8 at medium- high-bound temperatures, relative simple cycles. The fraction varies from ~0.2 0.9 summer winter, respectively, with average mechanical COPs 24.5 0.21, respectively. Exergy destruction takes place assembly, but efficiency boosting. could reduce electric loads over 40% compared local split conditioner, corresponding savings expenditure GHG emissions.