PPDS 3: For thermal conductivity l of the gas at low pressure (p < 600 kPa)

l = Tr0.5 (åai / Tri)-1 , where the summation is from i = 1 to 3,

and Tr = T/Tc, where Tc is the critical temperature.

Evaluation Results:
annotated evaluation results showing constant parameter T_c and fitted parameters (top to bottom): a_1, a_2, a_3

The example is for fitted thermal conductivities for the saturated liquid phase of pentane.