The response to the second (previous) edition of this book has been overwhelming with its 25th reprint since 1995 exhausted. Engineering Thermodynamicsis a basic subject so much so that there is hardly any scope for major revision. Simple precise statements of basic underlying principles have always been emphasized. However, in this edition, certain portions have been updated, some new material like chemical exergy and fuel cell have been added, and a good number of new problems have been included, of which some are solved while others are given as exercise. Chapter 19—Gas Compressors is new chapter that has been compiled by taking away the relevant matter furnished in Chapter 10 of the earlier edition and making additions to it.

The Solution Manual providing solutions to the chapter-end exercises given in the book is available for the teachers.

The author hopes that this new edition will continue to remain a popular book on the subject as it has always been since its initial publication in 1981, about a quarter of a century ago. He would appreciate any suggestion towards improvement or detection of errors from the readers.

P K NAG