Table 14.6.

Calculated parameters in the mainstream area with different number of centralized placed air supply outlets (25 h⁻¹)

Particle generation type	Number of air supply outlets	Ratio of area between air supply outlet and the ceiling	ψ	ψ a  =  ψ a /ψ c	ψ b	ψ a /ψ	ψ a /ψ b
No artificial particle generation	1	0.03	1.16	0.80	1.33	0.70	0.60
	2	0.06	1.05	0.65	1.14	0.62	0.57
	3	0.09	0.98	0.55	1.10	0.56	050
	4	0.12	1.0	0.41	1.78	0.41	0.23
Average