R134a/R23 is a new refrigerant mixture and friendly to environment. In this research
the vapor-liquid equilibrium
enthalpy
and entropy of this mixture were calculated based on Peng-Robinson(PR)equation of state(EOS). To make PR equation more accurate
a correction factor was correlated and the fugacity coefficient and complementary function were recalculated. According to the result from this calculation
an enthalpy-composition diagram was plotted
which supplies important data for thermophysical properties and cycle analysis of R134a/R23.