This work presents a theoretical thermodynamic study of a compression–absorption cascade refrigeration system using R134a and a lithium bromide–water solution as working fluids. First and second law of thermodynamics analyses were carried out in order to develop an advanced exergetic analysis, by splitting the total irreversibility and that of every component. The potential for improvement of the system is quantified, in the illustrated base-case 55.4% of the irreversibility is of avoidable nature and it could be reduced. The evaporator is the component that shows a significant potential for improvement, followed by the cascade heat exchanger, the compressor, and finally, the generator. The results of the advanced exergetic analysis can be very useful for future design and experimentation of these kinds of systems.
Advanced Exergy Analysis of a Compression–Absorption Cascade Refrigeration System
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received April 4, 2018; final manuscript received November 9, 2018; published online November 30, 2018. Assoc. Editor: Abel Hernandez-Guerrero.
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Colorado-Garrido, D. (November 30, 2018). "Advanced Exergy Analysis of a Compression–Absorption Cascade Refrigeration System." ASME. J. Energy Resour. Technol. April 2019; 141(4): 042002. https://doi.org/10.1115/1.4042003
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