Second-law analysis of two-stage vapour compression refrigeration plants Online publication date: Thu, 30-Sep-2010
by E. Torrella, R. Llopis, R. Cabello, D. Sanchez, J.A. Larumbe
International Journal of Exergy (IJEX), Vol. 7, No. 6, 2010
Abstract: 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°C and –20°C and for a condensing temperature range between 30°C and 47°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.
Online publication date: Thu, 30-Sep-2010
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