1. Heat Transfer

The study of Electro-heat requires a multidisciplinary scientific approach and knowledge in different fields such as heat transfer, electromagnetic fields, electrical engineering, materials science, etc. In this book, before the treatment of the heating processes most applied in industry, there are two introductory chapters with hints concerning heat transfer problems in stationary or transient regime and particular electromagnetic phenomena that occur in applications. After a short theoretical outline of different modes of heat transfer (conduction, radiation and convection), the solution of a number of practical problems is discussed. In particular, the first part of the chapter deals with steady conduction heat transfer problems in bodies of different geometries, with or without internal heat generation. Then, in the second part, the transient heating and cooling temperature distributions in bodies of different geometries are analyzed with various initial and boundary conditions. In this chapter numerical examples are included to allow the student to become familiar with thermal units and the orders of magnitude typical in these applications.