Thermodynamics

Thermodynamics is the science of energy, heat, work, properties of matter, and the limits on energy conversion. It connects the behavior of gases, liquids, vapors, engines, turbines, compressors, refrigeration systems, and many industrial processes through a small set of powerful principles.

This book is designed as a practical engineering guide rather than a collection of equations alone. Each chapter builds from definitions to physical interpretation, formulas, worked numerical examples, engineering observations, and revision points.

The sequence moves from basic concepts and the laws of thermodynamics to pure substances, entropy, availability, power cycles, refrigeration, psychrometrics, combustion-related energy analysis, and practical problem solving.

A recurring theme is unit discipline. SI units are used wherever possible. Students are encouraged to draw the system boundary first, identify known and unknown quantities, state assumptions, and only then select the governing equation.

The book is suitable for diploma and undergraduate engineering learners, competitive-exam preparation, plant engineers who want a compact refresher, and readers who want to connect textbook thermodynamics with real equipment.