DEFINITION AND PURPOSE OF INDUSTRIAL AIR TECHNOLOGY
Figure 1.1 (see color insert) is a schematic representation of the principles of I AT. Industrial air technology (IAT) can be defined as
Air flow technologies that control workplace indoor environment and emissions
A longer definition is
1. Air flow technologies that achieve and maintain a safe, healthy, productive and comfortable indoor environment in premises and occupied enclosures where this need is determined not only by human occupancy, normal human activities, and construction and finishing materials but also, and often primarily, by other factors, for example, production processes
2. Process air technology, such as air and gas purification, drying, or pneumatic conveying
3. Safety air technology, including risk assessment, that minimizes damages and hazards caused by accidents, fire, and explosion
It is typical for industrial premises to have, in one space, zones with different target levels. The target levels may be determined for the whole area or locally. Often only a part of the space requires controlling of the indoor environment parameters. In addition to the main controlled zone, there may be one or more local controlled zones with target levels different from those in the main controlled zone.
In addition to measures to control the indoor environment, industrial air technology also includes measures to prevent harmful emissions from industrial processes from being discharged outdoors, such as conveying and cleaning technologies and controlled discharge of exhaust air. Other systems include, drying (pulp drying, milk drying, crisp-bread drying, etc.), process ventilation, and safety air systems.
The scope of IAT includes premises other than traditional industrial process buildings, such as hospitals; underground car parks; mining, railroad, and vehicle tunnels; livestock buildings; and other premises and processes.
Posted in INDUSTRIAL VENTILATION DESIGN GUIDEBOOK