What is the energy efficiency of the induction heating furnace?

The direct energy utilization rate of induction heating furnace is 70%~85%, ranking first among the three heating methods.

When the primary energy natural gas is used for heating, it has the highest total energy utilization rate, which can reach about 33% when heating steel. The use of natural gas for heating is the development direction of steel heat treatment furnaces. In terms of energy efficiency, induction heating furnaces are better than resistance furnaces. It can be seen that induction heating furnaces should completely replace resistance furnace heating in terms of steel heat treatment. In this way, the heating efficiency of electric energy can be fully utilized and a large amount of energy can be saved. The energy utilization rate of induction heating furnace decreases with the increase of heating temperature. From the perspective of energy conservation and improvement of energy utilization, the heating conditions in the temperature zone above the Curie point should be improved to reduce high-temperature heat loss. In summary, no matter from the direct utilization rate of energy or the total utilization rate of energy, the induction heating furnace is an efficient and energy-saving heating method under the condition that electric power is used as an energy source for steel heat treatment. Therefore, it is necessary to continuously expand the application range of the rapid heat treatment process of steel induction heating furnace, and replace resistance furnace heating when possible.