by Reinhold; Chapman & Hall .
Written in English
|The Physical Object|
|Number of Pages||576|
• INDUCTIONAND DIELECTRIC HEATING J. Wesley Cable, Consulting Engineer. Reinhold Publishing Carp,,NewYork, vii + pp. 16Xcm. $ Although induction heating has been used for more than fiftyyearsin themetallurgicalindustry, dielectricheatingisa relativenewcomer whichisfindinguses inavarietyofindustries. Dielectric heating is also known as radiofrequency heating or electronic heating. When a non-metallic material such as wood, plastic, bone, or ceramic is subjected to an alternating electrostatic field, the dielectric loss occurs in it. This loss appears in the form of heat in dielectric heating. It is the basic dielectric heating principle. Here the term dielectric heating is used to represent the radiofrequency (RF) and microwave (MW) bands of the electromagnetic spectrum. RF heating is in the frequency range 1– MHz and MW from MHz to GHz. By international agreement, certain frequencies have been allocated for industrial use, in order to avoid interference with telecommunications. The definition of dielectric heating can be stated as – ‘the process of heating up material by causing dielectric motion in its molecules using alternating electric fields“. All materials are made up of molecules that are composed of atoms. The Dielectric Heating circuit diagram is shown below.
Induction heating is the process of heating an electrically conducting object (usually a metal) by electromagnetic induction, where eddy currents (also called Foucault currents) are generated within the metal and resistance leads to Joule heating of the metal. Induction heating is a form of non-contact heating. The frequency spectrum most commonly used for dielectric heating is in the range of 3 MHz to 30 GHz, corresponding to a wavelength of m to 1 cm. The heating effect of high frequencies is based on the interaction of the electric and magnetic field, generated by the high frequency, with the insulating Size: KB. Shop for Books on Google Play. Browse the world's largest eBookstore and start reading today on the web, tablet, phone, or ereader. Chapter 6 Stepper Motors Induction and Dielectric Heating 6 1 to 6 ipter 3 Voltage and Current Source Inverters 31 to Reviews: 1. Theory of Heating by Induction / 7 tromagnetic, or flux) around it. When the induction coil is placed next to or around a workpiece, the lines of force concentrate in the air gap between the coil and the workpiece. The induction coil actually functions as a trans-former primary, with the workpiece to be heated becoming the transformer Size: KB.
Induction and Dielectric Heating.J. Wesley Cable. Reinhold, New York, vii + pp. Illus. $Author: Emanuel L. Brancato. heat is generated by induction or dielectric methods. (2) Induction heating is the heating of a nominally conducting material due to its own i2R losses when the material is placed in a varying electro-magnetic field. (3) Dielectric heating is the heating of a nominally insulating material due to its own dielectric losses when the material is placed in a varying electric field,File Size: KB. Enter your mobile number or email address below and we'll send you a link to download the free Kindle App. Then you can start reading Kindle books on your smartphone, tablet, or computer - no Kindle device required. To get the free app, enter your mobile phone number. Currently unavailable. Dielectric heating, also called Capacitance Heating, method by which the temperature of an electrically nonconducting (insulating) material can be raised by subjecting the material to a high-frequency electromagnetic method is widely employed industrially for heating thermosetting glues, for drying lumber and other fibrous materials, for preheating plastics before molding, and for.