Completely rewritten in SI units, the second edition of this highly successful text provides a rigorous treatment of the subject. It deals the basic principles of thermodynamics with emphasis on their wide applicability in engineering. New to this edition :SI units adopted throughout the text;Elaborates the discussion on important topics --flow work and free expansion, and entropy generation; Introduces the concept of ideal gas, reciprocating gas compressors, multi-stage vapour compression systems in relevant chapters; Chapter on availability analysis thoroughly revised in keeping with the modern trend of second law optimization of thermal systems; Theory based review questions at the end of each chapter; Numerous additional worked-out examples and unsolved problems to stimulate students interest.