spiral exhaust ducts

Exhaust ducts are conduits or passages used in heating, ventilation, and air conditioning (HVAC) systems to deliver and remove air
They are an essential component of HVAC systems and are used to ensure acceptable indoor air quality as well as thermal comfort
Here are some key points about mechanical room ducts:

Exhaust ducts are used to deliver and remove air in HVAC systems
They can be made out of various materials, including galvanized steel and flexible ducting
A duct system is also called ductwork, and planning, sizing, optimizing, detailing, and finding the pressure losses through a duct system is called duct design

Exhaust ducts are often used to deliver ventilation air as part of the supply air
Exhaust ducts can be used to circulate fresh air using ducts and fans, rather than relying on airflow through small holes or cracks in a home's walls, roof, or windows
Exhaust ducts can be used to provide filtration, dehumidification, and conditioning of the incoming outside air

Overall, Exhaust ducts are an essential component of HVAC systems and are used to ensure that indoor air quality and thermal comfort are maintained.