Ventilation: A Symphony
By: Shannon Clark, MWI Components
Achieve Perfection by Asking the Right Questions
"Natural ventilation is like a symphony; one wrong note can stagnate the entire production, but when executed to perfection, the elaborate composition will rejuvenate the room.” - MWI
When it comes to ventilation, customization is the name of the game. You won’t find one ridge vent that’s perfect for each and every building; nor will you find a universal soffit profile. Obtaining ideal ventilation is a fine balance between ridge vents, soffit, and louvers.
Before we dive in too deep, let’s ruminate over the ventilation “rules”:
1. Systems using natural ventilation should be designed for effective ventilation regardless of wind direction.
2. Inlet openings should not be obstructed by buildings, trees, signboards, or indoor partitions.
3. Greatest flow per unit area of total opening is obtained by using inlet and outlet openings of nearly equal areas. If there is a difference in size, the lower opening should be slightly larger.
4. Two openings on opposite sides of a space will tend to increase the ventilation flow. If the openings are at the same level and near the ceiling, much of the flow may bypass the occupied level and be ineffective in diluting contaminants at the occupied level.
5. There must be vertical distance between openings for the temperature difference to produce natural ventilation; the greater the vertical distance, the greater the ventilation.
Now that you have a basic understanding of Natural Ventilation, take the time to eva