In the installation of the fresh air system, the use of ventilation pipes is indispensable, especially in the central fresh air system, a large number of pipes are needed to exhaust the air box and supply air, and the pipes mainly include hard pipes and flexible air ducts. The hard pipes generally have PVC. Pipes and PE pipes, flexible air ducts are generally aluminum foil flexible air ducts and PVC aluminum foil composite pipes and flexible air ducts. Both types of pipelines have their advantages and disadvantages. Let’s take a look at them now.
Firstly, about hard pipes.
The advantage of the rigid pipe is that the inner wall is smooth and the wind resistance is small, it is strong and durable, and it is not easy to be damaged, and the PVC rigid pipe is generally produced in batches and purchased locally, so the cost will be lower. Its disadvantage is that the hard pipes are generally straight, and elbows must be used in the corners. There are still many places where elbows need to be installed in the installation of air duct connections. In this case, the installation cost will increase, and the wind noise will be louder. One is that the installation and construction period will be longer, and industrial glue will be used when the pipes are connected, and the glue generally contains formaldehyde, which may pollute the fresh air.
Then let’s look at the flexible air ducts.
The flexible air duct is generally mainly made of aluminum foil tube, which is made of aluminum foil wrapped with spiral steel wire. The tube can be shrunk and bent at will. During installation, the number of elbows can be reduced a lot. The noise of high-speed airflow impact, and the pipe is made in a spiral shape, and the direction of our wind is also spiral, so the air supply is relatively quiet. secondary pollution. In addition, the flexible air duct is more adaptable to the installation environment, and the installation of the flexible air duct that has been suspended or the renovation of the old house is more convenient. Of course, the flexible air duct also has shortcomings, because the inner wall is not as smooth as the hard pipe after shrinking, which will cause a large loss of wind resistance and a certain air volume. Therefore, in the installation of the fresh air system, hard pipes and flexible air ducts are generally used together, which can save costs and reduce the difficulty of installation.
Here I would like to specifically explain that we have two types of flexible air ducts, one is aluminum foil flexible air duct and the other is PVC aluminum foil composite pipe. In the fresh air system, PVC aluminum foil composite pipe is mostly used. As the name suggests, PVC aluminum foil composite pipe is A layer of PVC is added to the outside of the aluminum foil flexible air duct for protection, especially when the construction environment is not good, and the material used for the flexible air duct is relatively thin, so a protective cover is essential.
Post time: Oct-24-2022