Second-law analysis of two-stage vapour compression refrigeration plants

作者：Torrella E; Llopis R^*; Cabello R; Sanchez D; Larumbe J A

来源：International Journal of Exergy, 2010, 7(6): 641-653.

DOI：10.1504/IJEX.2010.035512

• R-404A
• exergy analysis
• inter-stage pressure
• two-stage refrigerating cycle
• vapour compression

This paper describes a Second Law Analysis based on experimental data of a two-stage vapour compression facility driven by a compound compressor for medium and low-capacity refrigeration applications, which operates with the most usual inter-stage configurations (direct liquid injection and subcooler). The experimental analysis is performed for an evaporating temperature range between 36 degrees C and 20 degrees C and for a condensing temperature range between 30 degrees C and 47 degrees C using the refrigerant R-404A. The final results are compared with energy analysis from previous works. Additionally, a new criterion of equivalence between the simple vapour compression cycle and the two-stage compression cycle is given.

• 出版日期2010