|
|
PE pipes head losses
PE is common pipe for drip irrigation systems and mini sprinklers systems.
Main usage of Low Density Polyethylene pipe is for online emitters laterals and small systems sub and main lines.
External diameter Flow Rate 12 mm 16 mm 20 mm 25 mm 32 mm M3/H class 4 class 4 class 4 class 4 class 4 0.10 0.035 0.017 0.20 0.120 0.027 0.009 0.30 0.250 0.056 0.017 0.40 0.400 0.092 0.028 0.009 0.50 0.600 0.131 0.042 0.013 0.60 0.800 0.186 0.058 0.018 0.70 0.240 0.075 0.024 0.80 0.310 0.096 0.030 0.010 0.90 0.380 0.120 0.037 0.012 1.00 0.450 0.140 0.045 0.014 1.20 0.630 0.194 0.060 0.019 1.40 0.820 0.260 0.080 0.025 1.60 0.320 0.100 0.034 1.80 0.100 0.120 0.038 2.00 0.490 0.150 0.046 2.25 0.600 0.180 0.056 2.50 0.720 0.220 0.068 2.75 0.850 0.260 0.080 3.00 0.300 0.093 3.50 0.400 0.120 4.00 0.500 0.150 5.00 0.750 0.230 6.00 0.310 7.00 0.410
LD PE Head losses table, in meters for each meter of pipe length.
Main usage of High Density Polyethylene pipes is for sub-main and main lines in irrigation systems.
Flow Rate External diameter M3/H 40 mm 50 mm 63 mm 75 mm 90 mm class 4 class 4 class 4 class 4 class 4 10.00 0.180 0.061 0.020 15.00 2.000 0.041 0.017 20.00 0.070 0.029 25.00 0.105 0.044 0.010 30.00 0.145 0.060 0.018 35.00 0.190 0.079 0.024 40.00 0.235 0.100 0.031 50.00 0.150 0.046 60.00 0.210 0.063 70.00 0.084 80.00 0.105 90.00 0.130
HD PE Head losses table, in meters for each meter of pipe length.
Head losses in multi branch outlet irrigation pipe
Calculate the theoretical head losses as the pipe have no outlets.
Than multiply the result with the appropriate coefficient from the following table.
There are 2 types of coefficients:
1st outlet distance is equal to all other outlets distances.
1st outlet distance is equal to the half of all other outlets distances.
|
| ||
|
Number of outlets, N |
1st. outlet distance, equal distance outlets distances |
1st. outlet distance, is half of the outlets distances |
|
1 |
1.000 |
1.000 |
|
2 |
0.639 |
0.532 |
|
3 |
0.535 |
0.455 |
|
4 |
0.486 |
0.426 |
|
5 |
0.457 |
0.410 |
|
6 |
0.435 |
0.401 |
|
7 |
0.425 |
0.395 |
|
8 |
0.415 |
0.390 |
|
9 |
0.409 |
0.387 |
|
10 |
0.402 |
0.384 |
|
12 |
0.394 |
0.380 |
|
14 |
0.387 |
0.378 |
|
16 |
0.382 |
0.376 |
|
18 |
0.379 |
0.374 |
|
20 |
0.376 |
0.373 |
|
25 |
0.371 |
0.371 |
|
30 |
0.368 |
0.370 |
Utility links:
Irrigation piping bsp and npt standarts
irrigation pe piping metric standarts