Abstract
Industrial premises require different target levels for the indoor environment and its control. Room air conditioning systems are used to control the main controlled zone. A controlled zone is a zone in which the thermal and air purity conditions are controlled to their specified levels. An uncontrolled zone is a zone in which the thermal and air purity conditions are not specified or controlled. Capture zones are zones in which source emissions will be captured by a source-capturing system, and where the capture efficiency is determined and shall be maintained over the working period. Room air conditioning systems are used to control the main controlled zone. These are mainly pneumatic conveying systems, in which impurities and solid waste, but also materials or goods, are transported by airflows. In ventilation and air conditioning systems certain equipment can also require special safety measures (e.g., due to explosion risks). Finally, the chapter ends with definitions of several types of air.
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