Engineering students now have access to a comprehensive free thermodynamics textbook by Olivier Cleynen. This resource provides a progressive introduction to physical principles behind engines and refrigeration systems, building from fundamental concepts to advanced applications. The textbook targets university students and future engineers seeking practical understanding of thermodynamic principles.

The book systematically covers closed and open systems, ideal gas behavior, liquids and vapors, thermodynamic cycles, and the second law. Readers learn to quantify energy transfers, predict temperatures, and calculate performance of various systems including steam power cycles, air-based power cycles, and refrigeration systems. The content bridges theory with real-world engineering applications.

With 59 fully-commented examples and 96 problems with solutions, the textbook equips students to tackle engineering challenges confidently. Historical explorations connect major concepts to their origins and technological impact, providing valuable context. The appendices include practical resources like steam tables and conversion guides, making this a complete learning package for thermodynamics education.