Duct fitting pressure drop coefficients for
smooth converging bell mouth with end wall
From ASHRAE (1989), with permission
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r/D |
C0 |
0 |
0.50 |
|
0.01 |
0.44 |
|
0.02 |
0.37 |
|
0.03 |
0.31 |
|
0.04 |
0.26 |
|
0.05 |
0.22 |
|
0.06 |
0.20 |
|
0.08 |
0.15 |
|
0.10 |
0.12 |
|
0.12 |
0.09 |
|
0.16 |
0.06 |
|
>0.20 |
0.03 |