The Free On-line Aquaculture Dictionary |
Friction Loss - Air |
Metric Table Losses are given as mbar pressure loss per 30m smooth pvc pipe |
Diameter (inches) schedule 40 pipe (internal diameter in mm is given in brackets) |
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Air flow rate m3/hour | 1/2" (15.7) | 3/4" (20.9) | 1" (26.6) | 1 1/2" (40.9) | 2" (52.5) |
8.5 | 46.852 | 12.402 | 4.134 | 0.689 | 0 |
17 | 167.427 | 42.029 | 13.091 | 1.378 | 0 |
25.5 | 356.213 | 81.302 | 27.56 | 3.445 | 1.378 |
34 | 596.674 | 142.623 | 46.163 | 5.512 | 2.067 |
51 | 310.739 | 96.46 | 11.713 | 3.445 | |
85 | 799.24 | 176.384 | 29.627 | 8.957 | |
127.5 | 511.238 | 62.01 | 18.603 | ||
170 | 888.81 | 106.106 | 31.694 | ||
212.5 | 137.111 | 46.852 | |||
255 | 224.614 | 64.077 | |||
340 | 387.907 | 111.618 | |||
425 | 168.116 |
Losses are given as psi pressure loss per 100' pipe smooth pvc pipe |
Diameter (inches) schedule 40 pipe (internal diameter in mm is given in brackets) | |||||
Air flow rate cfm | 1/2" (15.7) | 3/4" (20.9) | 1" (26.6) | 1 1/2" (40.9) | 2" (52.5) |
5 | 0.68 | 0.18 | 0.06 | 0.01 | 0 |
10 | 2.43 | 0.61 | 0.19 | 0.02 | 0 |
15 | 5.17 | 1.18 | 0.4 | 0.05 | 0.02 |
20 | 8.66 | 2.07 | 0.67 | 0.08 | 0.03 |
30 | 4.51 | 1.4 | 0.17 | 0.05 | |
50 | 11.6 | 2.56 | 0.43 | 0.13 | |
75 | 7.42 | 0.9 | 0.27 | ||
100 | 12.9 | 1.54 | 0.46 | ||
125 | 1.99 | 0.68 | |||
150 | 3.26 | 0.93 | |||
200 | 5.63 | 1.62 | |||
250 | 2.44 |