The expansion and contraction of heat has certain damage to the air duct. Today, let's talk about how the spiral air duct should face this trouble in the cold area in the north or in winter.
First of all, for the selection of thermal insulation materials, the ones with good thermal insulation performance shall be selected, and the specifications of thermal insulation materials shall meet the requirements of the air duct system, as well as the design requirements of the air duct. The thermal insulation materials used shall have quality certificates such as certificates to ensure that the air duct can be effectively protected in use, so that it is not easy to be damaged in winter. The clean air duct is generally made of fire-resistant closed cell rubber plastic sponge insulation material, and the smoke exhaust air duct is generally made of non combustible aluminum foil glass wool board. These two materials are widely used and have good heat preservation performance.
Secondly, when wrapping the spiral air duct with thermal insulation materials, the cutting shall be accurate, and the cutting surface shall be as flat as possible, so as to ensure the tight bonding. When cutting, the short ends of the overlapping part of the horizontal and vertical surfaces shall be placed on the girder.
Finally, when the insulation material is used to wrap the spiral air duct, the thickness of the adhesive shall be uniform, and there shall be no glue flowing when the adhesive is applied. When the insulation material is laid, it can effectively ensure that the bonding place is tightly bonded during the bonding. There will be no hollowing in the bonding area and no exposed air duct.