Dongguan spiral duct system has relatively high requirements for noise. The allowable noise in residential bedrooms and living rooms (halls) should be less than or equal to 50 decibels during the day and 40 decibels or less at night. Therefore, this factor must be taken into consideration when installing the air duct system in domestic air conditioners. If it exceeds the national standard, it is necessary to additionally install a muffler or an air duct with a better sound absorption function. Thirdly, the requirement for the strength of the air duct is a moderate reduction. The requirement for the strength of the air duct is a moderate reduction. Many large-scale applications have a large space. Therefore, when the central air-conditioning system is installed, the intensity needs to be appropriately reduced. However, due to the relatively small ventilation volume of the air duct system and the relatively small caliber of the ventilation duct, the strength requirements of the duct material can be appropriately reduced when selecting the material of the duct system.
Once again, there are requirements for the height of the air-conditioning duct construction
Dongguan spiral air ducts are mainly used in office buildings and shopping malls for large-scale occasions, so the height requirements are not too obvious. But the situation is not the same for domestic air conditioners. Many floor heights are lower than 3 m, generally around 2.8 m, so the requirement for air-conditioning floor height is to occupy floor space as much as possible.