Pressure Losses across Multiple Fittings in Ventilation Ducts

Table 2

Effect of fitting type on pressure losses (Pa) across fitting(s).

Re (×10^4)	Case 1 versus 4; (only p1)	Case 2 versus 5; (only p1)	Case 3 versus 6; (only p1)	Case 10 versus 13; (p1 and p2)	Case 15 versus 14; (p1, p2 and p3)
6.7	—	204 versus 150	944 versus 640	190 versus 144 at p1; 172 versus 150 at p2	208 versus 142 at p1; 198 versus 154 at p2; 180 versus 118 at p3
13.3	286 versus 144	—	—	—	—