What is the thickness of the wire should be used for electric tubular heater?
When making the electric tubular heater, we usually only pay attention to the relationship between the diameter of the heating pipe and the voltage and power of the electric tubular heater, but few people will pay attention to the relationship between the wire diameter of the resistance wire in the tubular heater and the voltage and power of the electric heating pipe. When making tubular heaters, do you want to use the diameter of resistance wire as thick as you want? What factors determine the diameter of resistance wire?
After we know the voltage and power, and then according to the formula: voltage * voltage = power * resistance, we can easily calculate the resistance value of the electric heating tube. At this time, the resistance of the tube is set. That is to say, the length of resistance wire (determined by the length of heating zone of electric heating tube) and wire diameter have been determined. What will happen if we make the diameter of the resistance wire of the same length thicker when we keep the voltage and power unchanged?
According to the resistance = resistivity × length of conductor ×cross-sectional area of conductor, the thicker the material is, the smaller the resistance is. If you want to balance the formula: voltage * voltage = power * resistance, you must change the voltage or power. Then the original voltage or power can not be changed. Therefore, the wire diameter of the resistance wire of the heating pipe cannot be changed at will.
It can be seen from the above that the wire diameter of the resistance wire in the electric tubular heater is determined by the voltage, power and length of the electric tubular heater, and it can not be used as thick as you want.