**Resistance Heating Furnace**
A resistance heating furnace is an electric furnace that utilizes the heat generated by electrical current passing through conductors as its primary heat source. These furnaces convert electrical energy into thermal energy through heating elements, which then heat the materials placed inside the furnace. Resistance furnaces are renowned for their high thermal efficiency, which ranges from 50% to 80%. They can precisely control the heating process, making them ideal for applications requiring strict temperature regulation.