Understanding of the technological process and identification of subprocesses are essential for proper ventilation design, especially when designing process ventilation but also in enclosure air technology. The purpose of process description is to identify possible emission sources, occupational areas, the effects of environmental parameters on production, needs for enclosure and ventilation equipment, etc. One purpose is to divide the process into parts such that their inputs and outputs (e. g., process, piping and duct connections, electricity, exposure) to environment can be defined. Parts here can be different departments, and inside them, subprocesses. See Fig. 3.4.
Also, possible specific secondary sources of energy should be studied at this stage.
Tools for this task could include databases and further expert systems.
Posted in INDUSTRIAL VENTILATION DESIGN GUIDEBOOK