This is an introduction to thermodynamics for engineering students. No previous knowledge is assumed. The book covers the first and second laws of thermodynamics and their consequences for engineers. Each topic is illustrated with worked examples and subjects are introduced in a logical order allowing the student to tackle increasingly complex problems as he reads. Problems and selected answers are included. The heart of engineering thermodynamics is the conversion of heat into work. Increasing demands for more efficient conversion, for example to reduce carbon dioxide emissions, are leading to the adoption of new thermodynamic cycles. However the principles of these new cycles are very simple and are subject to the standard laws of thermodynamics as explained in this book.