Table 1 Setting of experimental parameters.

From: Research on the air supply adjustment technology of breath-following powered air-purifying respirators

Experimental parameter

Experimentally set value

Standard value of air velocity \(v_{s}\) (m/s)

14.6, 13.4, and 12.1

Duty cycle variation coefficient λ

0.5, 1, 1.5, and 2

Number of filter layers m

0, 1, 2, and 3

MIF (L/min)

15, 30, 45, 60, and 85

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