Figure 9.

Particle deposition loss rate coefficient (β) measured in a 14‐m3 room as a function of particle diameter. Three of four experiments were conducted with four small fans operating to induce different degrees of air motion. As noted in the key, the mean measured speed in the room with the fans on ranged between 5.4 and 19.1 cm/s. The room was furnished with carpeting, chairs, table, bookcase, and curtains. Source: Thatcher et al. (2002)