How does the number of bends affect dryer airflow?

• A. Bends increase airflow efficiency.
• B. Bends have no effect on airflow.
• C. Each bend adds resistance, reducing airflow and increasing drying time.
• D. Bends accelerate drying time by creating turbulence.

Answer: (C)

Airflow through a dryer exhaust is driven by the blower, and the duct’s shape directly affects how easily that air moves. Each bend redirects the airstream and creates friction and a pressure drop, reducing how much air can be exhausted per unit of time. When there are more bends, the total resistance adds up, so the dryer has to work harder to push air out, which slows drying and can leave moisture in the load. Turbulence at bends isn’t beneficial for drying; it often disrupts steady heat transfer and can trap lint or increase friction, not speed up drying. The practical takeaway is to keep duct runs as straight and short as possible with minimal bends to maintain strong airflow and shorter drying times.