If you give you an electric heating tube, how do you calculate its common rate? It means you have to calculate everything yourself. Can you make it clear?
1. Among the many factors, this method mainly considers the influence of the heating wire and does not consider the influence of the use conditions, design level, casing life, sealing and other factors.
Heater
2, after long-term use of the electric heating tube, the resistance value will change at room temperature, and the change rate of the use time is different. The change in the resistance value of the resistance wire at room temperature is caused by the change in the structure of the resistance wire under high temperature.
3, the life of the electric heating tube is related to the temperature of the resistance wire. If you can find out the corresponding relationship between the resistance wire's normal temperature resistance change and the life of the electric heating tube after use, it is possible to calculate the long-term change based on the short-term use, and then infer the actual service life of the resistance wire in the electric heating tube after a long-term change.