Use of exergy method for the analysis of rethrophite of marine refrigerating machines

The article is devoted to the problems of remittance of ozone-depleting re-frigerant R22 in marine refrigerating machines on alternative mixed refrigerants. To compare energetic indices of marine refrigerating machine's work the exergic method has been chosen. The formula of dependence of any parameter of refrigerant on temperature is derived; with the help of the approximation by the 4th degree polynominal the approximation coefficients allowing to determine thermo-physical and thermo-dynamical properties of refrigerant for any temperature in definite range are set, the valuables of approximation coefficients are given in the table. The exergic diagrams for alternative refrigerants R407C and R410A are drawn.