What type of vent is used to expel air and moisture during the drying process?

The appropriate type of vent used to expel air and moisture specifically during the drying process is a dryer vent. This vent is specifically designed to carry the hot, moist air produced when laundry is dried in a dryer. It helps prevent excessive humidity within the laundry area and reduces the risk of mold and mildew, which can thrive in damp conditions.

Dryer vents are typically constructed from either metal or rigid plastic and are connected directly to the dryer. They help facilitate the safe and efficient removal of air—and the moisture it carries—outside of the building. This function is critical, as improper venting can lead to hazardous situations, including lint buildup leading to fire risks or increased indoor humidity levels.

Other types of vents, such as exhaust vents, are more general-purpose and may serve various types of mechanical systems. A vent stack, typically utilized in plumbing systems, is designed to allow air to enter and exit drainage systems, thereby maintaining the necessary pressure balance, but it does not specifically cater to dryer functions. Lastly, a fresh air intake brings outside air into space, which is not related to the expulsion of moist air that occurs during the drying process.