Why do not pay attention to the vacuum drying oven temperature uniformity General electric (blast) drying ovens are equipped with temperature uniformity parameters: Natural convection oven is the working temperature limit by 3%, forced convection oven is the working temperature limit Multiply by 2.5%. Only the electric vacuum drying oven does not have temperature uniformity parameters. Why is this?
The possibility of homogenizing the temperature of the working chamber by the movement of gas molecules in the vacuum drying oven is almost gone. Therefore, conceptually, we can no longer use the temperature uniformity defined by a typical electric (blast) drying oven in a vacuum drying oven.
Setting this indicator under vacuum is also meaningless. The amount of heat radiation is inversely proportional to the square of the distance. For the same object, the radiant heat received at a distance of 20cm from the heating wall is only 1/4 of the distance from the heating wall. big difference. This phenomenon is very warm when it comes to the sun in the sun and the sun is warm to the sun. Due to the fact that the vacuum drying oven is structurally difficult to achieve uniform radiant heat at all points in the three-dimensional space of the studio, and also lacks an authoritative assessment method, this may be due to the absence of standards in the electrothermal vacuum drying oven. The reason for the temperature uniformity parameter.
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