A FIRST AND SECOND LAW ANALYSIS DEVELOPED ON A TWO STAGE VAPOR COMPRESSION REFRIGERATION SYSTEM

The Coefficient of Performance is a standard criteria for performance analysis of refrigeration cycle. Even if the first law analysis method is widely used to evaluate thermodynamic systems, it deals only with energy conservation. Instead, exergy analysis offers useful indications when the performance improvement is aimed. In this paper it is developed a first and second law analysis. It is studied the influence of different parameters on the Coeficient of Performance and on the exergy efficiency of a two stage vapor compression refrigeration cycle working with ammonia frequently used in fishing industry.