"The current development in the power generation industry is of increasing demand for combined cycles with improved efficiency and reduced delivery time. Improved efficiency reduces the fuel related cost and, at the same time, contributes to the resolution of the greenhouse effect. Heat Recovery Steam Generators (HRSG) are key components in the combined cycle. Following a market trend towards extensive cycling operation and combined cycles of increasing size with gas turbines of improved technology having higher exhaust gas temperatures and flow rates, and new design option has become interesting in the recent years and has been taken into account as a possible advancement for the HRSG technology. This book covers the recent reviews and studies dealing with the fundamental principles and theories behind Heat Recovery Steam Generator technology that is supported by practical design examples and illustrations. It describes the main features of and highlights the most relevant advantages that HRSG units based on this concept offer compared to Drum Type units. This edition is of interest for plant engineers, technicians and operators, consultants, engineering contractors, construction firms, and university libraries as well as for those planning cogeneration projects makes important decisions about the system and performance related aspects."