The Principle Of Silicon Carbide Heating Element

The silicon carbide heating element is usually made into a straight rod shape, the middle part has a small diameter, which is the heating part, called the hot end, and the two ends are thick in diameter, called the cold end. This is designed based on the correlation of cross-sectional area, resistance, current, and heat generation. According to the principle of R=PL/S, the smaller the cross-sectional area, the larger the resistance value, and the larger the cross-sectional area, the smaller the resistance. When the same current value is passed, the one with the larger resistance will generate more heat than the one with the smaller resistance, because the heat generation Q=0.242I2Rt. In addition, when needed in special occasions, it can also be made into a tube shape or a U shape.