Development and application of induction and resistive electrical heating systems for industrial pipelines

Development and application of induction and resistive electrical heating systems for industrial pipelines

 

This paper examines problems of calculation of heating units for ferromagnetic steel in weak electromagnetic fields. Such installations are low-temperature induction heating installations. In these plants, the electromagnetic field energy is converted into heat due to the induced currents and hysteresis. Comparison of use options of induction, electrical contact and combined methods of pipe heating has been provided. Special problems – heating system options have been considered: use of bimetallic outer conductors; use of increased frequency; effect of a lengthwise cut (clearance) of a steel pipe. Possibilities of the survey results utilization have been investigated, as well as engineering and techno-economic problems.

 

Download PDF full text