Thermodynamic properties of difluoromethane (HFC-32) are expressed in a 35-termcrossover equation of state. This equation of state is effective at pressures up to 35MPa,densities up to 1450 kg.m-3, and temperatures fr...Thermodynamic properties of difluoromethane (HFC-32) are expressed in a 35-termcrossover equation of state. This equation of state is effective at pressures up to 35MPa,densities up to 1450 kg.m-3, and temperatures from 150 K to 480 K, respectively. Equations for Helmholtz energy, Gibbs energy, internal energy, enthalpy, entropy, isochoric heatcapacity, isobaric heat capacity, speed of sound, and second virial coefficient of HFC-32 arepresented. Independent equations are also included for vapor pressure and saturated liquiddensity as function of temperature.展开更多
文摘Thermodynamic properties of difluoromethane (HFC-32) are expressed in a 35-termcrossover equation of state. This equation of state is effective at pressures up to 35MPa,densities up to 1450 kg.m-3, and temperatures from 150 K to 480 K, respectively. Equations for Helmholtz energy, Gibbs energy, internal energy, enthalpy, entropy, isochoric heatcapacity, isobaric heat capacity, speed of sound, and second virial coefficient of HFC-32 arepresented. Independent equations are also included for vapor pressure and saturated liquiddensity as function of temperature.
