Yunus A. Çengel is a Professor of Mechanical Engineering at the University of Nevada, Reno. He received his Ph. D. in Mechanical Engineering from North Carolina State University in 1984. His current research areas are renewable energy, desalination, exergy analysis, and energy conservation. He served as the director of the Industrial Assessment Center (IAC) at the University of Nevada, Reno, from 1996 to 2000. He has led teams of engineering students to numerous manufacturing facilities in Northern Nevada and California to industrial assessments, and has prepared energy conservation, waste minimization, and productivity enhancement reports for them.

Dr. Çengel is also the author of the widely adopted textbooks "Introduction to Thermodynamics and Heat Transfer" (1997), "Heat Transfer: A Practical Approach" (1998), and "Fundamentals of Thermal-Fluid Sciences" (with Dr. Turner, 2001), all published by McGraw-Hill. Some of his textbooks have been translated to Chinese, Japanese, Korean, Spanish, Turkish, Italian, and Greek. Dr. Çengel is the recipient of several outstanding teacher awards, and he has received the ASEE Meriam/Wiley Distinguished Author Award for excellence in authorship in 1992 and again in 2000. Dr. Çengel is a registered Professional Engineer in the State of Nevada and is a member of the American Society of Mechanical Engineers (ASME) and the American Society for Engineering Education (ASEE).

Michael A. Boles is Associate Professor of Mechanical and Aerospace Engineering at North Carolina State University where he earned his Ph.D. in mechanical engineering and is an Alumni Distinguished Professor. Dr. Boles has received numerous awards and citations for excellence as an engineering educator. He is a past recipient of the SAE Ralph R. Teetor Education Award and has been twice elected to the NCSU Academy of Outstanding Teachers. On several occasions the ASME student section has recognized him as an outstanding teacher and the faculty member having the most impact on mechanical engineering students.

Dr. Boles specializes in heat transfer and has been involved in the analytical and numerical solution of phase change and drying of porous media. He is a member of the American Society of Mechanical Engineers, the American Society for Engineering Education, and Sigma Xi.

Professors Çengel and Boles received the ASEE Meriam/Wiley Distinguished Author Award in 1992 in recognition of their excellence in the authorship of the first edition of this text.