Physical Properties of Pure Fluids

We will present the second main objective of Chemical Engineering Thermodynamics, the Evaluation of Thermophysical Properties (Section 1.14.2), by considering P re Fluids, in this and the ensuing two Chapters and Mixtures, in Chapters 11 through 15. (Actually Chapters 13 and 14 deal with Phase Equilibrium and Chapter 15 with Chemical Equilibrium, subjects whose study represents the third objective of Chemical Engineering Thermodynamics. Their separate consideration, thus, is intended to emphasize their importance in our profession.) 

We start by discussing in this Chapter the Physical Properties of pure fluids  

Values of these properties are essential in chemical engineering calculations (see Table 1.4 for example), such as the sizing of pipes and vessels, the evaluation of duties in heat exchangers, etc. In addition, they are required information in the determination of the Thermodynamic Properties of pure fluids, enthalpies, entropies, etc., that are considered in the next Chapter and of mixture properties. 

The importance of thermophysical properties has not become noticeable in our discussion so far because, for simplicity reasons  

We know, of course, that gases behave as ideal ones in the limit of zero pressure, and that other compounds - besides steam - are important in chemical engineering calculations. 

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