Contents 1 SOME INTRODUCTORY COMMENTS 1 1.1 The Simple Steam Power Plant, 1 1.2 Fuel Cells, 2 1.3 The Vapor-Compression Refrigeration Cycle, 5 1.4 The Thermoelectric Refrigerator, 7 1.5 The Air Separation Plant, 8 1.6 The Gas Turbine, 9 1.7 The Chemical Rocket Engine, 11 1.8 Other Applications ....