Chemical engineering thermodynamics is primarily concerned with the application of thermodynamics to phase equilibria and reaction equilibria in multi-component systems and to the calculation of extrema in the work involved in separation processes. Of secondary importance in this context is its application to heat-work inter-conversion devices, which are studied in detail by mechanical engineers. Phase and reaction equilibria involving two or more solid phases are of primary interest to metallurgists.

Thermodynamics plays a supervisory and often intangible role in engineering. Its applications are obvious in the design of Chemical engineering equipment in processes in which approach to equilibrium is nearly one hundred percent in practice. Even in those cases where the processes are governed by rate considerations, thermodynamics sets the boundaries of design. It plays a fundamental role in transport theory in which rate processes are treated as departures from equilibrium. The mathematical abilities required for applying thermodynamics to practical problems are generally of second year undergraduate level.

Classical thermodynamics is generally taught without reference to molecular structure of matter. The incorporation of concepts from molecular theory is indeed of great help in clarifying some of the concepts in classical thermodynamics. However the quantitative use of molecular theory is a skill that can be acquired only after considerable concerted effort on the part of the student. It is therefore impractical to try to include molecular theory for use as a quantitative tool as part of an undergraduate classical thermodynamics course.

A course on thermodynamics is logically divided into three parts: theory, properties of matter and applications. Thermodynamic theory is based on the two laws that represent un-contradicted experience and is elegant and rigorous. Every application of the theory requires the knowledge of the properties of the specific system of interest. Until now any mismatch between a theoretical prediction and the experimental observation has been attributable to our incomplete knowledge of the system properties.

Lectures

Topics

1

Thermodynamics and the Chemical Industry

2

James Prescot Joule and the first law

3

Sadi Carnot and the second law

4

Equilibrium and Extrema in work

5

Illustrative Calculations I

6

Properties of pure substances

7

The p-h chart

8

Work calculation

9

Illustrative Calculations II

10

Heat-Work Interconversion Devices

11

Refrigeration/ Thermodynamics of mixtures

12

The Gibbs Duhem equation

13

Models for Excess Gibbs Free Energy

14

Van Laar model

15

Gaseous and liquid mixtures

16

Separation Work/ Equations of state

17

Chemical potentials in gas and condensed phases

18

Vapour Liquid Equilibria I

19

Vapour Liquid Equilibria II

20

Solvent-Solvent mixtures

21

Solvent-solute mixtures

22

Liquid-liquid equilibria

23

An industrial example

24

Liquid-liquid equilibria/ Reaction Equilibria

25

Reaction Equilibria

26

Illustrative Examples I

27

Illustrative Examples II

28

Illustrative Examples III

29

Simultaneous Relations

30

Thermodynamic Consistency/ Reverse Osmosis

31

Miscellaneous topics in phase equilibria

32

Absorption Refrigeration

33

Summary of Classical Thermodynamics

34

Molecular basis of Thermodynamics I

35

Molecular basis of Thermodynamics II

TEXT BOOKS

Smith, J.M. and Van Ness, H.C., `Introduction to Chemical Engineering Thermodynamics', McGraw Hill (1975). This is the most comprehensive book. The subsequent editions of this book (6th and 7th) have an additional author,M.M. Abbott and some additional topics, that are not normally part of an undergraduate course.

Denbigh, K., `The Principles of Chemical Equilibria with Applications in Chemistry and Chemical Engineering', Cambridge University Press (1968). This book has the best exposition of concepts. It has no explicit treatment of open systems

REFERENCE BOOKS

Prausnits, J.M., Lichtenthaler, R.N. and Azevedo, E.G., `Molecular Thermodynamics of Fluid-phase Equilibria', Ed. 2. Prentice Hall (1986). The treatment in this book is basically a mix of classical thermodynamics and molecular theory. However some of the chapters are written in a refreshing style and can be used to advantage in a classical thermodynamics course. The material in chapters 1,2 and 3 as well as 5,6,8,9 and 10 is of interest to UG students.

Walas, S.M., 'Phase Equilibria in Chemical Engineering', Butterworths (1985) has a very detailed and comprehensive treatment of Phase Equilibria.

Important: Please enable javascript in your browser and download Adobe Flash player to view this site
Site Maintained by Web Studio, IIT Madras. Contact Webmaster: nptel@iitm.ac.in