Why the aluminum insulation jacketing roll will be bent down in cooling

Why does the cooling of aluminum insulation jacketing roll will be bend?
The reason is: under general air cooling conditions, the heat transfer coefficient of all parts of the insulated aluminum coil and air is flat, but because the wall thickness or shape is not the same, the heat dissipation rate of each part is uneven. The heat dissipation speed of the thick wall or hollow tube is slower than that of the thin wall. Finally, it will lead to the hollow part when the temperature of the coil is cooled. Or the tortuous phenomenon of the thicker parts of the wall.



Aluminum Insulation jacketing roll is actually aluminum sheet, commonly known as aluminum coil. The delivery can be a flat or a roll. In recent years, due to the iron sheet in the thermal insulation industry does not have the effect of rust prevention, so at present, the aluminum insulation jacketing has completely replaced iron sheet.