Industry Information

    Ventilation ducts are mainly used in industrial and construction projects, with main application areas including: cleanroom purification systems for electronics industries, sterile workshops for pharmaceuticals and food, hotels, shopping malls, hospitals, and more. Let's take a look at the installation considerations for ventilation ducts.

    1. For more complex civil buildings, during the design phase, each trade (HVAC, water supply and drainage, power supply, lighting, and building specialties) should first negotiate spatial separation and determine the elevation range for each type of pipeline. Generally, you must not cross the boundaries set for your own rules. If a single pipe section needs to cross the boundary, negotiations with other projects should be conducted.

    2. Ventilation ductsEquipment installationBefore construction, the equipment chief engineer should draw the pipelines for each trade on a single line on a floor plan. Each type of pipe uses a colored pen. Summarize the elevations at each intersection to identify any contradictions, identify them promptly, and resolve issues before installation.

　 3. When transporting general gases in the duct, the black steel plate duct should be treated with rust removal and anti-rust paint. For dust-laden gases, an anti-wear protective layer can be sprayed. When the surrounding air humidity is high, the outer wall of the duct should be treated for corrosion and rust prevention. For galvanized steel ducts transporting high-temperature and high-humidity gases, the inner walls should be sprayed with phosphating primer or other corrosion-resistant coatings.

　 4. When transporting high-temperature or low-temperature air in the duct, the outer wall of the duct should be treated with insulation (cold retention). The purpose of insulating high-temperature gas ducts is, first, to prevent heat loss from the air inside the ducts (which occurs in centralized air conditioning systems in winter); Another is to prevent heat from escaping into the room during transport of waste heat steam or high-temperature gases, which could raise the room temperature, and also to prevent burns from touching the ducts.

    5. To reduce investment, save space, and lower floor height, some pipes with no slope requirements can be laid through beams (such as tap water pipes, fire sprinkler main pipes, etc.).