How to ensure efficient operation of wall window ventilation and perforated ceiling exhaust fans

Ventilation ducts, as a bridge connecting ventilation equipment with outdoor or other indoor areas, the sealing of their connections and the selection of materials are directly related to the ventilation effect and the operating efficiency of the equipment. In the production process of perforated ceiling exhaust fans, the connection of ventilation ducts is particularly critical. If the connection is not tight and air leakage occurs, it will not only weaken the ventilation effect, but also cause noise pollution and affect the user experience of the residents. Therefore, ensuring the sealing of ventilation duct connections is the first step to improve the performance of ventilation equipment.

To achieve the sealing of ventilation duct connections, it is necessary to start from both technical and material aspects.
Technical level:
Accurate measurement and cutting: Before connecting the ventilation ducts, the length, diameter, etc. of the ducts need to be accurately measured to ensure perfect docking between the sections of the ducts. When cutting, professional tools should be used to ensure that the cuts are smooth and the gaps are reduced.
Application of sealant: Applying sealant at the duct joints can effectively fill the gaps and enhance the sealing of the connection. The choice of sealant should be determined according to the use environment and the duct material to ensure that it is resistant to high temperature, corrosion, and not easy to age.
Selection of fasteners: When connecting pipes, appropriate fasteners, such as screws, clamps, etc., should be used to ensure a tight connection between pipes. The material and specifications of the fasteners should also be selected according to the pipe material and the use environment to avoid air leakage or damage caused by improper fastening.

Material level:
The material selection of ventilation ducts is also crucial. Common ventilation duct materials include metal (such as galvanized steel plate, stainless steel), plastic (such as PVC, PP), fiberglass, etc. Different materials have different performance characteristics and are suitable for different use environments.
Metal pipes: have good compressive strength and corrosion resistance, suitable for high temperature, humid or corrosive environments. However, metal pipes are heavy, and attention should be paid to support and fixation during installation.
Plastic pipes: light weight, easy to install, and have certain corrosion resistance and thermal insulation properties. However, plastic pipes are prone to aging in high temperature environments and need to be replaced regularly.
Fiberglass pipes: have good thermal insulation and corrosion resistance, but the price is high, and special care should be taken during installation to avoid damage.
When selecting pipe materials, factors such as the use environment, cost budget, and construction difficulty should be considered comprehensively to ensure that the selected materials can not only meet the ventilation needs, but also ensure long-term use effects.

The length and material selection of ventilation ducts also have an important impact on the operating efficiency of ventilation equipment. In the installation of perforated ceiling exhaust fans, the appropriate pipe length and material should be selected according to the actual situation of the installation environment.

The length of the ventilation duct should be comprehensively considered based on the structure of the building, ventilation needs, and the performance of the equipment. If the pipe is too long, it will increase the resistance to air flow and reduce ventilation efficiency; if the pipe is too short, it may not meet the ventilation needs. Therefore, when designing a ventilation system, the pipes should be reasonably laid out to minimize unnecessary elbows and branches to ensure smooth air flow.

The selection of pipe materials also needs to consider factors such as the use environment, cost budget, and construction difficulty. In humid and corrosive environments, corrosion-resistant metal materials or plastic pipes should be selected; in high-temperature environments, high-temperature resistant metal materials or fiberglass pipes should be selected. The material of the pipe should also match the material of the ventilation equipment to avoid connection problems caused by material differences.

In actual operation, choosing the right pipe length and material often requires rich practical experience and in-depth understanding of the performance of various materials. Construction personnel need to flexibly adjust the design plan according to the on-site conditions to ensure the performance and efficiency of the ventilation system.

In a ventilation system renovation project of a commercial office building, we encountered the problem of ventilation duct connection. The original ventilation system of the office building used metal pipes. Due to disrepair, there were many air leaks, resulting in poor ventilation effect. During the renovation process, we first conducted a comprehensive inspection and repair of the original pipes, and then applied high-performance sealant at the key joints and tightened them with stainless steel clamps. Considering that the internal environment of the office building is relatively dry and has high requirements for noise control, we chose PVC plastic pipes as the material of the new pipes to reduce noise pollution.

After the renovation was completed, we conducted a comprehensive test of the ventilation system. The results showed that the ventilation efficiency was significantly improved, the air leakage was effectively controlled, and the noise pollution was greatly reduced. This case fully illustrates the importance of ventilation duct connection and the key role of the correct selection of pipe materials and connection technology in improving the performance of ventilation equipment.