THE BASICS OF VENTILATION


Ventilation is the process by which fresh air is introduced and contaminated air is removed from an occupied space.

Purposes of Ventilation

The purposes of ventilation are:

1. To provide a continuous supply of oxygen necessary for human existence.

2. To remove the heat, moisture and carbon dioxide from a room.

3. To remove contaminants such as:

  • Water vapor

  • Heat and smells from cooking

  • Gases and vapors from industrial processes.

  • Formaldehyde from; insulation foam, furnishings, wallpaper, carpets, resin in wood products and plasterboard.

  • Outdoor aerosol pollutants such as; smoke, soot, mist, fumes, pollen, plant fibers, mold spores, viruses and bacteria

  • Indoor aerosol pollutants such as; carpet fibers, furniture fibers, clothing fibers, skin flakes, mites, viruses and bacteria.

Typical Ventilation System

A typical plant layout is shown below.

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