Interest in heat engineering has increased again in a time in which, on the one hand, industrial-furnace technology is booming and, on the other hand, costs for gaseous fuels and electrical energy are rising rapidly. In addition, the rational utilization of energy in heat-processing technology is set to attain an ever more central significance due, not least of all, to current controversies on the subject of CO2 emissions. The work examines from a practical viewpoint the current state of the technological art and all relevant fundamental principles of heat transfer, fluid mechanics and combustion systems. The reader is provided with a detailed overview of all relevant principles, calculations, terms and processes in industrial heat engineering, and thus with important aids for his or her daily work. This compact-format book, with its plethora of information, is an indispensable reference for all those involved in any way at all with thermal processing technology and industrial-furnace engineering and operation.