Arrangement of air duct

Size of tunnel (width × height × length)

Fan drum length and diameter

Model section diagram

Single fan drum wall-attached jet ventilation

5m × 3.3 m × 200 m

length 100 m

diameter 1 m

Parallel double fan drums wall-attached jet ventilation (The difference between the two air ducts is 5 m)

5 m × 3.3 m × 200 m

length 100 m and 95 m, diameter 1 m

Double fan drums coplanar wall-attached jet ventilation (The two air ducts are the same length)

5 m × 3.3 m × 200 m

length 100 m and 100 m, diameter 1 m