This textbook is intended for courses in heat transfer for undergraduates, not only in chemical engineering and related disciplines of biochemical engineering, and chemical technology, but also in mechanical engineering and production engineering. The author provides the reader with a thorough account of the fundamental principles and their applications to engineering practice, including a survey of the recent developments in heat transfer equipment. A whole chapter has been devoted to explain the concept of the heat transfer coefficient to give a feel of its importance in tackling problems of convective heat transfer. The use of the important heat transfer correlations has been illustrated with carefully selected examples. In addition to an overview of the construction, operation and selection of equipment for heating, cooling, and phase change (boiling, condensation and evaporation), the revised second edition provides glimpses of the present trends and practice relating to heat transfer equipment in process industries and illustrative photographs of the state-of-the-art equipment. The design procedures of more common heat exchangers such as shell-and-tube, air-cooled, plate-and-frame, spiral plate, and spiral tube have been illustrated with realistic examples. Several new examples and problems have been included. Comparison with ASPEN simulation results has been given for a shell-and-tube exchanger. Cost calculation of a heat exchanger from the first principles is included. Recent topics such as heat transfer in microchannels and nano-fluids, and bio-heat transfer have been introduced.