Results were far from the ideal behaviour for all alcohols, especially
for low alcohol contents. As the alcohol content in the
blend increases, the activity coefficients get closer to ideal ones
Fig. 8. Evaporated mass for the n-butanol/diesel blends with increasing initial concentrations of n-butanol.
Fig. 9. Effect of the initial alcohol content on the evaporation rate for all alcohols
(modelled results).
Fig. 10. Mole fraction at the liquid and vapour phase for n-butanol in the 60%
n-butanol/-diesel blends along time.
J.P. Hernández et al. / Applied Thermal Engineering 102 (2016) 302–310 309
(unity) and both results, experimental and modelled become
closer to those corresponding to the ideal model.