Example 2.22: Calculate viscosity of nitrogen at 80 bar and 300 °K. Liquid density at critical conditions, d_c, is 0.311 g/cm³, and viscosity of nitrogen at low pressures is η^o = 178.78 μP

Solution

$ Pressure, P = 78.395 atm

$ Critical volume, V_c

$ Specific volume, V:

$ Reduced volume, V_r:

$ Reduced density, ρ_r:

$ Viscosity difference group, f₄(ρ_r) (Equation 2.66):

$ Viscosity difference η - η^o (Equation 2.66):