Iranian Journal of Mechanical Engineering Transactions of ISME

Iranian Journal of Mechanical Engineering Transactions of ISME

Energy, exergy and economic analysis of an improved hybrid cascaded compression-absorption refrigeration system

Author
Faculty of Engineering, Ayatollah Boroujerdi University, Boroujerd, Iran
Abstract
In this paper, improving the performance of a compression-absorption refrigeration system employing a booster compressor is investigated based on energy, exergy and economic analysis. Two position for the booster compressor are proposed (between the generator and the condenser, or between the cascade condenser and the absorber). the results show that using a compressor between the generator and the condenser improves the COP and the second law efficiency by 68% and 24% respectively and enhances the capital cost of the cycle by 31%, while using the compressor between the evaporator and the absorber can increase the COP and the second law efficiency of the cycle by 79% and 31%, respectively and decrease the cost of the cycle by 40%. Furthermore, the effect of compressor pressure ratio,condensor temperature, generator temperature, cascade condenser temperature and compression section evaporator temperature on thermodynamic and economic performance of the cycle is analyzed. The results indicate that the two hybrid systems can improve the performance of the cycle and locating the compressor between the evaporator and the absorber can show better performances.
Keywords

Subjects


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  • Receive Date 26 February 2021
  • Revise Date 14 May 2021
  • Accept Date 16 June 2021