Design considerations of inductors for induction heating of fluids

This paper presents a design methodology for an inductor for induction heating device. The proposed design algorithm provides optimal selection of the inductor pipe, size and dimensions. Electrical parameters of the coil are also derived. The main steps of the design procedure are described. The methodology steps are in accordance with the specific assigned operating parameters and the geometric dimensions of the inductor. Specific design recommendations are proposed: considering skin effect at the selection of the width of the piece and calculating in accordance with the operating frequency; eddy current losses in the coil could be decreased using Litz wire or a few wires in parallel. The analytical results lead to the need of design of an improved inductor.