Engineering Thermodynamics

International edition with SI units

Engineering Thermodynamics by Olivier Cleynen is an open textbook on energy accounting in fluids, thermodynamic cycles, and the operation of heat engines and refrigeration systems.

This MyST edition is a faithful web-native conversion of the free PDF from thermodynamicsbook.com. The Markdown under chapters/, appendices/, front/, and back/ is generated from that PDF by the scripts in scripts/ and is the editable source for this site.

Source and license¶

Original work © Olivier Cleynen (2015–2025), ISBN 9781446710067. Licensed CC BY-SA 4.0. Share adaptations under the same license and cite the book where you use it.

Suggested citation: Cleynen, O. (2025). Engineering Thermodynamics (International SI ed.). thermodynamicsbook.com.

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Table of contents¶

• Engineering Thermodynamics
• Introduction
• 1. Fundamental Concepts
• 2. Closed Systems
• 3. Open Systems
• 4. The Ideal Gas
• 5. Liquids and Vapors
• 6. Thermodynamic Cycles
• 7. The Second Law
• 8. Entropy
• 9. Steam Power Cycles
• 10. Air-Based Power Cycles
• Appendices
  • A1. Steam Tables
  • A2. Gauge Pressure and Real Pressure
  • A3. Additive Quantities
  • A4. State Quantities and Process Quantities
  • A5. Conversion of Units to SI
  • A6. Notation
  • A7. Mental Health For the Engineering Student
  • A8. Errata & Change Log
  • A9. Contributors
  • A10. Reusing This Book
  • A11. Citing This Book
• Reference
  • Bibliography
  • List of Symbols