Air and contaminant movement

Principles of Air and Contaminant Movement inside and around Buildings... 

This chapter presents the basic processes of air and contaminant movement, such as jets, plumes, and boundary flows. 

PRINCIPLES OF AIR AND CONTAMINANT MOVEMENT INSIDE AND AROUND BUILDINGS... 

Air and Contaminant Movement between Building Zones 591 References 598... 

Proper selection and sizing of ventilation systems require knowledge of emissions from internal contaminant and heat sources and an understanding of the mechanisms and characteristics of air and contaminant movement. 

Major factors affecting air and contaminant movement inside ventilated space are summarized in Section 7.3 and can be classified as... 

In some cases, the ventilation process in the room can be simplified and mechanisms of air and contaminant movement under the influence of each of the above factors can be described using simplified theoretical principles of fluid mechanics, empirical data, and observations from numerous research studies. In general, the ventilation process in a room is complex and different factors have a joint effect on airflow patterns and characteristics, in continued spaces and in industrial buildings particularly. 

Air and contaminant movement and turbulent intensity in the ventilated space are affected by different external and internal forces, such as... 

In rooms where air and contaminant movement is dominated by thernnal energy of heat sources (e.g., in rooms with natural or displacement ventilation), temperature and contaminant stratification along the room height is created. Air supply and exhaust in such rooms are designed not to disturb the natural pattern of air movement created by heat sources cooled air enters the room in... 

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