Universal Flexible Air Duct Advantages:
1. Shorter construction period (compared with rigid ventilation ducts);
2. It can be close to the ceiling and wall. For the room with low floor, and those who do not want the ceiling too low， flexible air ducts are the only choice;
3. Because flexible air ducts are easy to rotate and has strong ductility, the various pipes on the ceiling are too complicated (such as air conditioning pipes, pipes, fire pipes, etc.). ) is suitable without damaging too many walls.
4. It can be applied to suspended ceilings or old houses that have been refurbished, and some suspended ceilings are not afraid of being damaged.
5. The position of the duct and the air inlet and outlet can be easily changed later.
Disadvantages:
1. Since flexible air ducts are folded, the inner wall is not smooth, resulting in a large wind resistance and a reduced ventilation effect;
2. This is also due to the large wind resistance inside the flexible duct, so the air volume of the hose is greater than the air volume of the rigid pipe need, and the flexible air duct cannot ventilate too far, nor can it be bent too many times.
3. The flexible air ducts are not as strong as the rigid PVC pipe and are more likely to be cut or scratched.
Rigid duct: that is, polyvinyl chloride pipe, the main component is polyvinyl chloride, and other components are added to enhance its heat resistance, toughness, ductility, etc. The common sewer pipes in our home are only pipes used to transport water, and the fresh air system is used for for ventilation.
Advantages of Rigid Ventilation Ducts:
1. Tough, strong and durable, not easy to be damaged after many years of use;
2. The inner wall is smooth, the wind resistance is small, the air volume attenuation is not obvious, and the air can be sent to the room far away from the fan.
Disadvantages of Rigid Ventilation Duct:
1. The construction period is longer (compared with the flexible air duct), and the cost is higher;
2. It is impossible to use the suspended ceiling where the suspended ceiling is installed, and the complicated overhead space pipeline is also difficult to use.
3. The height of the ceiling is usually lower than the height of the flexible air ducts due to the need for more space to fix the hard pipes and corners.
4. It is difficult to replace the duct or change the position of the air inlet and outlet later.
In view of the advantages and disadvantages of the two kind of air ducts, in the fresh air system, the two are usually used in combination. The main pipe is a rigid air duct, and the connection between the branch pipe and the main fan is a flexible air duct.
Post time: Sep-27-2022