3E Analysis of Ejector Compression Absorption Cascade Cycle Working with Environmental Friendly Refrigerants

The low electrical consumption of the compression absorption cascade cycle and its potential to work with low-grade generation temperature qualify it to become an attractive system for refrigeration production, in this work, the performance of the ejector compression absorption cascade cycle (ECACC) was studied using 11 refrigerants with low GWP and ODP for vapor compressor section, the performance comparison results show that the R744 has the better COP and the exergy efficiency then the effect of generation temperature on the performance of ECACC is carried out. Also, the destruction of exergy destruction of the main component of ECACC is analyzed. The annual cost includes the investment, operating, and environmental costs considered. Also, the following results found in the studied cycle show that the thermodynamic performance is at maximum in a specific generation temperature and then decreases with an increase in the generation temperature, contrary to the annual cost. The absorber, the generator, the cascade heat exchanger, the solution heat exchanger, and the condenser are responsible for almost all exergy destruction of ECACC followed by the compressor and the ejector, respectively