Analysis of the heat dissipation situation of the resistance wire in the mask tubular heating element
In order to determine the working range of the mask tubular heating element, it is necessary to analyze and study the heat dissipation of the electric heating wire. What is the relationship between the heat dissipation of the electric heating wire and the working state of the mask tubular heating element? Listen to Best and analyze it with everyone.
It is known from the principles of heat transfer that in an object with heat propagation, at any time, many layers can be separated, bounded by two surfaces with the same temperature Ti and Ti + 1, and between the two surfaces of each layer With the same temperature difference ΔTi, such surfaces with the same temperature are called isothermal surfaces. At any time, the integration of all isothermal surfaces gives the temperature distribution in the object, that is, the temperature field in the object. When the object is heated or cooled, the temperature drop of each part of the object changes with time, so that the position of the isothermal surface also changes at each instant. At this time, the temperature field will also change with time and become unstable. Of course, there are cases where the temperature does not change with time, which is a static or stable thermal state.
For an mask tubular heating element, the distribution of its isotherm and temperature field is more complicated than that of a heating element in the working state of the internal electric heating tube heating wire, and it is related to the distance between the spirals. The spiral pitch coefficient K of the electric heating tube heating wire is reasonable at 4 ~ 5 (except in the case of very high heat load conditions). And this can also save the consumption of heating wire. Of course, the value of K cannot be too large, too large will cause excessive heating wire load.
It can be seen that the heat dissipation of the heating wire is closely related to the load of the mask tubular heating element, so everyone should pay attention to the thermal process of the heating wire of the mask tubular heating element. In addition, the heat transfer process to the pipe, the temperature difference between the heating wire and the pipe And the relationship between tube surface temperature and load
