Ductwork is very important in delivering compressed air to its intended end use, and it's not just about system design, the material of the ductwork can also affect overall energy efficiency.

Iron, copper and aluminum are common compressed air piping materials, but the performance of these materials can vary widely. The cost of black iron pipes and copper pipes is low. But black iron pipes are very heavy and time-consuming and labor-intensive to install. It tends to have a high leak rate due to the threaded connections. The rough internal structure also makes black iron extremely easy to accumulate pollutants and cause pipes to rust.

Copper, on the other hand, is relatively cheap, has a smoother surface, maintains good air quality, and is readily available. However, considering that an open flame is required to install copper pipes, this is a tricky problem. This means that as facilities grow and move, adjustments to copper piping systems will be more difficult than adjustments to other piping materials. At the same time, copper is also susceptible to thermal cycling, so you need a high-quality braze to prevent leaks.

While aluminum piping has a higher upfront cost, its light weight makes it very easy to install. Due to the smooth interior, reduced line loss, and corrosion resistance; this means that aluminum far exceeds black iron piping in terms of start-up and long-term efficiency of the piping system, which means lifetime costs are lower than other materials. Another advantage is that it is easier to reconfigure the piping system if equipment is added or moved.

compressed air ductwork

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