Which ducts need heat preservation in ventilation engineering? Because we know that in the winter the pipes leak out and if you don't have insulation they can freeze and the water can't flow. The ventilation duct is to help us eliminate indoor air pollution, and there is no flowing water inside, so whether the ventilation duct also needs heat preservation?

The insulation of ventilation engineering is generally in the following two situations:

A. Prevent system equipment and accessories from forming dews in the humid and warm environment, corroding the system itself and damaging the surrounding environment

B. Prevent high temperature heat generation of system equipment from affecting the thermal balance environment of the perimeter or prevent thermal burns of personnel and other equipment.

When one of the following conditions is met, insulation or anti-freezing measures should be taken for ventilation equipment and air ducts:

A. The temperature of the air delivered is not allowed to be significantly increased or decreased;

B. When the air temperature is high;

C. Dew may form in the dust duct or dry dust collector;

D. Before the discharged gas is discharged into the atmosphere, it may be blocked by cooling and condensation or corrode the air duct;

E. Wet dust removal facilities or wet dust removers may freeze and corrode.

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