This is the only book to apply thermodynamics to real-world process engineering problems, explaining the thermodynamics behind simulations from the view of academic and industrial authors to users of simulation programs. It comprises numerous solved examples, which simplify the understanding of the often complex calculation procedures, and discusses their advantages and disadvantages. The text also includes such special models as for formaldehyde, polymers, and associating compounds. Estimation methods for thermophysical properties and phase equilibria and thermodynamics of alternative separation processes are covered, as are new developments from recent years.