- Resources, Tools and Basic Information for Engineering and Design of Technical Applications!
Ventilation systems - air intakes and outlets - rules of thumbs.
Intakes should be at least
0.15 m (0.5 ft) above the terrain. In areas with traffic the intake should be at least 5 m (16 ft) above the terrain The distance between intake, firewalls and surrounding buildings must be according the rules of the local authorities
Short cutting intake air with used outlet air must be avoided
An air intake should be located in a position where the wind influence on the pressure conditions within the system is limited
Air velocities in the intake openings should not exceed
2.5 m/s (~ 500 ft/min) Outlets
Outlets should go direct out in unrestricted area
Short cuts with intake air, window openings and residence areas must be avoided
The distance between outlet, firewalls and surrounding buildings must be according the rules of the local authorities
An air outlet should be located in a position where the wind influence on the pressure conditions within the system is limited
The air velocity through the outlet should not exceed
3 - 15 m/s (~ 500 - 3000 ft/min)
Systems for ventilation and air handling - air change rates, ducts and pressure drops, charts and diagrams and more.
Design procedure for ventilation systems - air flow rates, heat and cooling loads, air shifts according occupants, air supply principles.
Concentration of a pollution in a limited space as a room depends on the amount of polluted material spread in the room, supply of fresh air, outlets positions and construction, principles used for supply and outlet from the space.
Size and capacities of air return intakes.
Search is the most efficient way to navigate the Engineering ToolBox.
About the Engineering ToolBox!
We don't collect information from our users. More about
This page can be cited as
The Engineering ToolBox (2003).
Air Intakes and Outlets. [online] Available at: https://www.engineeringtoolbox.com/air-intake-outlet-d_137.html [Accessed Day Month Year].
Modify the access date according your visit.