With one formula, you can find what fan is right for your printer. This is the formula for fan CFM: Cubic feet per minute, more commonly known as CFM is calculated by the following formula: air speed (feet per minute) X area (square feet)=CFM. Not everyone is going to take a look at CFM, but for those who do it is a helpful tool. In simpler words than that of the formula, it is the amount of air a fan moves.
Static Pressure
| Figure 1. | This illustrates operation of a negative pressure ventilation system (A), a positive pressure ventilation system (B), and a neutral pressure system (C). |
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When a fan operates, it creates a static pressure difference between the inside and outside of a building. This air pressure difference can be measured with a manometer in inches of water.
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