Page 47 - HVAC Pump Handbook

Rishel_CH03.qxd 20/4/06 5:35 PM Page 44

Piping System Friction
TABLE 3.5 Flow of Water in Steel Pipe (Continued )
10-in schedule 40, 12-in schedule 40, 14-in schedule 40,
ID 10.020 in ID 11.938 in ID 13.124 in
V
V
V
Flow, 2 Hf, 2 Hf, 2 Hf,
gal/min V, ft/s 2 g, ft ft/100 ft V, ft/s 2 g, ft ft/100 ft V, ft/s 2 g, ft ft/100 ft
0120 00.49 0.004 00.010
0140 00.57 0.005 00.014
0160 00.65 0.007 00.017
0180 00.73 0.008 00.022
0200 00.81 0.010 00.026 00.57 0.005 0.011 00.47 0.003 0.007
0220 00.90 0.013 00.031 00.63 0.006 0.013 00.52 0.004 0.009
0240 00.98 0.015 00.036 00.69 0.007 0.016 00.57 0.005 0.010
0260 01.06 0.017 00.042 00.75 0.009 0.018 00.62 0.006 0.012
0280 01.14 0.020 00.048 00.80 0.010 0.021 00.66 0.007 0.014
0300 01.22 0.023 00.054 00.86 0.012 0.023 00.71 0.008 0.015
0350 01.42 0.032 00.072 01.00 0.016 0.031 00.83 0.011 0.019
0400 01.63 0.041 00.092 01.15 0.020 0.039 00.95 0.014 0.025
0450 01.83 0.052 00.114 01.29 0.026 0.049 01.07 0.018 0.032
0500 02.03 0.064 00.138 01.43 0.032 0.059 01.19 0.022 0.037
0550 02.24 0.078 00.164 01.58 0.039 0.070 01.31 0.026 0.045
0600 02.44 0.093 00.192 01.72 0.046 0.082 01.42 0.031 0.052
0650 02.64 0.109 00.224 01.86 0.054 0.095 01.54 0.037 0.061
0700 02.85 0.126 00.256 02.01 0.063 0.109 01.66 0.043 0.068
0750 03.05 0.145 00.291 02.15 0.072 0.124 01.78 0.049 0.078
0800 03.25 0.165 00.328 02.29 0.082 0.140 01.90 0.056 0.087
0850 03.46 0.186 00.368 02.44 0.092 0.156 02.02 0.063 0.098
0900 03.66 0.208 00.410 02.58 0.103 0.173 02.13 0.071 0.108
0950 03.87 0.232 00.455 02.72 0.115 0.191 02.25 0.079 0.120
1000 04.07 0.257 00.500 02.87 0.128 0.210 02.37 0.087 0.131
1100 04.48 0.311 00.600 03.15 0.154 0.251 02.61 0.106 0.157
1200 04.88 0.370 00.703 03.44 0.184 0.296 02.85 0.126 0.185
1300 05.29 0.435 00.818 03.73 0.216 0.344 03.08 0.148 0.215
1400 05.70 0.504 00.940 04.01 0.250 0.395 03.32 0.171 0.247
1500 06.10 0.579 01.07 04.30 0.287 0.450 03.56 0.197 0.281
1600 06.51 0.659 01.21 04.59 0.327 0.509 03.79 0.224 0.317
1700 06.92 0.743 01.36 04.87 0.369 0.572 04.03 0.252 0.355
1800 07.32 0.834 01.52 05.16 0.414 0.636 04.27 0.283 0.395
1900 07.73 0.929 01.68 05.45 0.461 0.704 04.50 0.315 0.438
2000 08.14 1.03 01.86 05.73 0.511 0.776 04.74 0.349 0.483
2200 08.95 1.25 02.23 06.31 0.618 0.930 05.21 0.422 0.584
2400 09.76 1.48 02.64 06.88 0.735 1.093 05.69 0.503 0.696
2600 10.6 1.74 03.08 07.45 0.863 1.28 06.16 0.590 0.816
2800 11.4 2.02 03.56 08.03 1.00 1.47 06.64 0.684 0.947
3000 12.2 2.32 04.06 08.60 1.15 1.68 07.11 0.786 1.04
3200 13.0 2.63 04.59 09.17 1.31 1.90 07.58 0.894 1.18
3400 13.8 2.97 05.16 09.75 1.48 2.13 08.06 1.01 1.34
3600 14.6 3.33 05.76 10.3 1.65 2.37 08.53 1.13 1.50
3800 15.5 3.71 06.40 10.9 1.84 2.63 09.01 1.26 1.67
4000 16.3 4.12 07.07 11.5 2.04 2.92 09.48 1.40 1.81
4500 18.3 5.21 08.88 12.9 2.59 3.65 10.7 1.77 2.27
5000 20.3 6.43 10.9 14.3 3.19 4.47 11.9 2.18 2.78
5500 15.8 3.86 5.38 13.1 2.64 3.36
6000 17.2 4.60 6.39 14.2 3.14 3.95
6500 18.6 5.39 7.47 15.4 3.69 4.64
7000 20.1 6.26 8.63 16.6 4.28 5.32
8000 19.0 5.59 6.90
9000 21.3 7.08 8.7
NOTE: V velocity, feet per second; V /2g velocity head, feet; Hf friction loss, feet
2
per 100 feet of pipe. No aging factor, manufacturer’s tolerance, or any factor of safety
has been included in the friction losses Hf.

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