The aim of this book is to present innovative advancements in the usage of heat transfer phenomenon. In today's world, unprecedented industrial growth, rapid urbanization, developments in transportation and persistent human habits have resulted in acute energy shortage. In such a scenario, energy saving can be vitally affected by efficient transfer of heat. Effective heat exchange tools have a great impact on industries, household requirements, offices and transportation. Taking these factors into account, this book has incorporated a structured study of two phase flow of heat transfer and heat augmentation by various means.