Heat and Mass Transfer is a comprehensive textbook that delves deep into the science of heat transfer, that is, the study of energy exchange between materials due to temperature differences. This foundational subject plays a critical role in a wide range of engineering and scientific disciplines, including energy production, refrigeration and air conditioning, chemical and petrochemical processes, electronic equipment design, aerospace technology, environmental science, manufacturing, and food processing. The book effectively bridges theoretical concepts with practical engineering applications, making it an invaluable resource for students and professionals alike.

Beginning with an introduction to the fundamental modes of heat transfer—conduction, convection, and radiation—the book gradually explores more advanced topics. These include general heat conduction equation, one-dimensional heat transfer (both with and without heat generation), multi-dimensional conduction, extended surfaces, unsteady-state heat transfer, and dimensional analysis. Additionally, it covers external and internal flow convective heat transfer correlations, free convection, boiling, condensation, heat exchangers, thermal radiation, radiation exchange between surfaces, and mass transfer, ensuring a thorough understanding of the subject.