Aug 22, 2020
Relationship between surface load and surface temperature of electric heating tube in flowing air:
In the flowing air medium, the surface temperature of heating tube is different under the condition of the same unit surface power and different air velocity. According to Jaye's test and data analysis, the following conclusions can be drawn:
When the air velocity is 3m / S,
The surface load is 1W / cm2 and the surface temperature of the heating rod is 150 ℃
The surface load is 2W / cm2 and the surface temperature of the heating rod is 280 ℃
The surface load is 3W / cm2 and the surface temperature of the heating rod is 380 ℃
The surface temperature of the heating rod is 4 w / cm2;
When the air velocity is 6m / s,
The surface load is 1W / cm2 and the surface temperature of the heating rod is 80 ℃
The surface load is 2W / cm2 and the surface temperature of the heating rod is 200 ℃
The surface load is 3W / cm2 and the surface temperature of the heating rod is 280 ℃
The surface load is 4W / cm2 and the surface temperature of the heating rod is 330 ℃
The surface load is 5W / cm2 and the surface temperature of heating rod is 400 ℃
When the air velocity is 9 m / s,
The surface load is 2W / cm2 and the surface temperature of the heating rod is 150 ℃
The surface load is 3W / cm2 and the surface temperature of the heating rod is 210 ℃
The surface load is 4W / cm2 and the surface temperature of the heating rod is 280 ℃
The surface load is 5W / cm2 and the surface temperature of the heating rod is 320 ℃
When the air flow speed is 12 m / s,
The surface load is 2W / cm2 and the surface temperature of the heating rod is 120 ℃
The surface load is 3W / cm2 and the surface temperature of heating rod is 180 ℃
The surface load is 4W / cm2 and the surface temperature of heating rod is 230 ℃
The surface load is 5W / cm2 and the surface temperature of the heating rod is 280 ℃
Through Jaye's experiment, we found that the higher the air flow speed, the lower the surface temperature of the heating rod, that is to say, the surface load of the electric heating tube can be greater. Therefore, from this point of view, the most suitable power density of electric heating tube design is closely related to the working temperature and environment. That's why our customers ask us about the working temperature and heating environment when they make an inquiry.
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