TY - JOUR

T1 - Thermodynamic property representation for the R-32/125 binary system by a new cubic equation of state

AU - Zhang, H. L.

AU - Sato, H.

AU - Watanabe, K.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Thermodynamic properties of the R-32/125 binary system are modeled by a new cubic equation of state which was developed and applied to the pure R-32 and R-125 in a previous paper by the present authors. The essential thermodynamic properties such as PVTx properties, vapor-liquid equilibrium, enthalpy, entropy, isobaric specific heat, and speed of sound are well represented by the new model simultaneously for the liquid phase, the gas phase, and the two-phase region of the R-32/125 binary system. The developed model is valid for the entire range of compositions, and a pressure-enthalpy diagram for a R-32/125 mixture with 50 mass% of R-32 is illustrated as an example. The new model was also compared with other reported models in refrigeration cycle calculations.

AB - Thermodynamic properties of the R-32/125 binary system are modeled by a new cubic equation of state which was developed and applied to the pure R-32 and R-125 in a previous paper by the present authors. The essential thermodynamic properties such as PVTx properties, vapor-liquid equilibrium, enthalpy, entropy, isobaric specific heat, and speed of sound are well represented by the new model simultaneously for the liquid phase, the gas phase, and the two-phase region of the R-32/125 binary system. The developed model is valid for the entire range of compositions, and a pressure-enthalpy diagram for a R-32/125 mixture with 50 mass% of R-32 is illustrated as an example. The new model was also compared with other reported models in refrigeration cycle calculations.

KW - Alternative refrigerant

KW - Cubic equation

KW - Mixture model

KW - R-32/125

KW - Thermodynamic properties

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U2 - 10.1016/S0140-7007(97)00029-7

DO - 10.1016/S0140-7007(97)00029-7

M3 - Article

AN - SCOPUS:0031222302

VL - 20

SP - 441

EP - 451

JO - International Journal of Refrigeration

JF - International Journal of Refrigeration

SN - 0140-7007

IS - 6

ER -