Example 2.24: Calculate the thermal conductivity of nitrogen at 300 °K. η = 178.78 μP,
Cp = 6.5 + 0.001T cal/(mol·°K), Tc = 126.05 °K.
Solution
Reduced temperature, Tr = 300/126.05 = 2.38
Viscosity η = 1.788 ´ 10-4 P
Specific heat at constant pressure, CP
CP = 6.5 + 0.001T = 6.5 + 0.001(300) = 6.8 cal/(mol·°K)
Specific heat at constant volume, CV (assume ideal behavior)
Thermal conductivity, λG (Equation 2.68)