Condensate Pipe Lines - Sizing
When sizing condensate return lines in steam distribution system - remember that the maximum condensate flow is achieved during plant start up when pipes and equipment are heated up.
A rule of thumb - the condensate load used to design condensate pipe lines should be twice the maximum production load.
Pressure loss | Condensate Flow (kg/hour) | ||||||||
---|---|---|---|---|---|---|---|---|---|
Pipe Size (mm, inch) | |||||||||
15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | ||
(Pa/m) | (mbar/m) | 1/2 | 3/4 | 1 | 1 1/4 | 1 1/2 | 2 | 2 1/2 | 3 |
28 | 0.28 | 90 | 209 | 380 | 865 | 1320 | 2554 | 5194 | 8079 |
29 | 0.29 | 92 | 214 | 400 | 878 | 1340 | 2590 | 5271 | 8196 |
30 | 0.3 | 93 | 218 | 403 | 890 | 1361 | 2631 | 5348 | 8314 |
33 | 0.33 | 97 | 226 | 414 | 930 | 1420 | 2744 | 5579 | 8677 |
39 | 0.39 | 107 | 249 | 469 | 1028 | 1565 | 3025 | 6142 | 9526 |
40 | 0.4 | 108 | 253 | 476 | 1040 | 1583 | 3062 | 6214 | 9639 |
43 | 0.43 | 113 | 263 | 496 | 1079 | 1646 | 3180 | 6454 | 10024 |
45 | 0.45 | 116 | 270 | 508 | 1107 | 1687 | 3261 | 6618 | 10297 |
47 | 0.47 | 119 | 277 | 521 | 1134 | 1728 | 3338 | 6777 | 10523 |
50 | 0.5 | 123 | 286 | 538 | 1172 | 1787 | 3447 | 6949 | 10859 |
53 | 0.53 | 127 | 296 | 557 | 1211 | 1846 | 3565 | 7235 | 11249 |
55 | 0.55 | 130 | 302 | 569 | 1238 | 1887 | 3638 | 7380 | 11476 |
57 | 0.57 | 133 | 308 | 580 | 1261 | 1923 | 3710 | 7525 | 11703 |
59 | 0.59 | 135 | 314 | 591 | 1288 | 1959 | 3783 | 7666 | 11884 |
61 | 0.61 | 138 | 320 | 602 | 1311 | 1996 | 3851 | 7806 | 12111 |
64 | 0.64 | 141 | 327 | 615 | 1338 | 2041 | 3933 | 7970 | 12383 |
67 | 0.67 | 146 | 337 | 634 | 1379 | 2100 | 4051 | 8210 | 12746 |
69 | 0.69 | 148 | 343 | 645 | 1402 | 2136 | 4119 | 8342 | 12973 |
71 | 0.71 | 150 | 348 | 655 | 1424 | 2168 | 4182 | 8473 | 13154 |
73 | 0.73 | 152 | 354 | 665 | 1447 | 2200 | 4246 | 8600 | 13336 |
76 | 0.76 | 155 | 359 | 675 | 1465 | 2236 | 4305 | 8723 | 13563 |
77 | 0.77 | 157 | 365 | 685 | 1488 | 2268 | 4368 | 8850 | 13744 |
78 | 0.78 | 158 | 366 | 689 | 1497 | 2282 | 4390 | 8900 | 13812 |
80 | 0.8 | 160 | 370 | 695 | 1510 | 2300 | 4427 | 8972 | 13925 |
82 | 0.82 | 162 | 375 | 704 | 1529 | 2331 | 4491 | 9072 | 14407 |
88 | 0.88 | 168 | 391 | 733 | 1590 | 2427 | 4536 | 9453 | 14651 |
90 | 0.9 | 170 | 395 | 740 | 1606 | 2449 | 4717 | 9548 | 14787 |
98 | 0.98 | 179 | 414 | 777 | 1696 | 2567 | 4944 | 10025 | 15513 |
100 | 1 | 180 | 418 | 785 | 1701 | 2590 | 4990 | 10115 | 15649 |
114 | 1.14 | 194 | 450 | 845 | 1832 | 2790 | 5366 | 10841 | 16828 |
118 | 1.18 | 198 | 457 | 857 | 1860 | 2830 | 5443 | 11022 | 17055 |
120 | 1.2 | 199 | 462 | 867 | 1880 | 2860 | 5502 | 11113 | 17282 |
131 | 1.31 | 209 | 484 | 907 | 1969 | 2994 | 5761 | 11657 | 18053 |
137 | 1.37 | 215 | 497 | 931 | 2018 | 3071 | 5906 | 11948 | 18507 |
140 | 1.4 | 216 | 502 | 939 | 2037 | 3103 | 5965 | 12066 | 18688 |
147 | 1.47 | 224 | 516 | 966 | 2096 | 3189 | 6128 | 12383 | 19187 |
157 | 1.57 | 231 | 534 | 1002 | 2168 | 3298 | 6337 | 12814 | 19822 |
160 | 1.6 | 234 | 541 | 1011 | 2195 | 3340 | 6409 | 12973 | 20049 |
163 | 1.63 | 237 | 546 | 1025 | 2218 | 3370 | 6477 | 13109 | 20276 |
176 | 1.76 | 246 | 570 | 1066 | 2309 | 3511 | 6740 | 13608 | 21092 |
180 | 1.8 | 249 | 576 | 1075 | 2331 | 3547 | 6808 | 13744 | 21319 |
196 | 1.96 | 261 | 603 | 1129 | 2440 | 3710 | 7130 | 14379 | 22317 |
200 | 2 | 265 | 611 | 1143 | 2472 | 3760 | 7221 | 14560 | 22589 |
212 | 2.12 | 273 | 629 | 1179 | 2549 | 3874 | 7430 | 15014 | 23270 |
216 | 2.16 | 275 | 634 | 1188 | 2567 | 3905 | 7493 | 15132 | 23451 |
220 | 2.2 | 278 | 641 | 1200 | 2595 | 3942 | 7570 | 15277 | 23678 |
229 | 2.29 | 284 | 655 | 1225 | 2649 | 4028 | 7729 | 15604 | 24177 |
235 | 2.35 | 288 | 664 | 1243 | 2689 | 4086 | 7843 | 15840 | 24522 |
240 | 2.4 | 292 | 672 | 1256 | 2719 | 4129 | 7927 | 16017 | 24780 |
245 | 2.45 | 295 | 679 | 1270 | 2749 | 4173 | 8010 | 16193 | 25039 |
255 | 2.55 | 301 | 694 | 1297 | 2806 | 4260 | 8176 | 16520 | 25556 |
260 | 2.6 | 304 | 701 | 1311 | 2834 | 4304 | 8260 | 16683 | 25814 |
261 | 2.61 | 305 | 703 | 1315 | 2844 | 4318 | 8287 | 16738 | 25900 |
274 | 2.74 | 313 | 721 | 1348 | 2917 | 4331 | 8501 | 17173 | 26554 |
277 | 2.77 | 315 | 727 | 1356 | 2935 | 4459 | 8555 | 17282 | 26717 |
280 | 2.8 | 317 | 730 | 1363 | 2948 | 4479 | 8593 | 17357 | 26839 |
294 | 2.94 | 325 | 749 | 1402 | 3025 | 4595 | 8813 | 17781 | 27533 |
300 | 3 | 328 | 757 | 1414 | 3055 | 4641 | 8900 | 17956 | 27803 |
310 | 3.1 | 335 | 771 | 1438 | 3112 | 4726 | 9063 | 18280 | 28305 |
314 | 3.14 | 336 | 775 | 1446 | 3129 | 4752 | 9074 | 18380 | 28459 |
320 | 3.2 | 340 | 784 | 1462 | 3163 | 4825 | 9204 | 18579 | 28767 |
327 | 3.27 | 344 | 792 | 1479 | 3198 | 4853 | 9299 | 18779 | 29076 |
333 | 3.33 | 348 | 801 | 1495 | 3230 | 4904 | 9408 | 18979 | 29366 |
340 | 3.4 | 351 | 809 | 1511 | 3263 | 4955 | 9516 | 19178 | 29656 |
342 | 3.42 | 353 | 813 | 1520 | 3279 | 4980 | 9571 | 19278 | 29801 |
353 | 3.53 | 358 | 825 | 1541 | 3328 | 5054 | 9707 | 19550 | 30237 |
359 | 3.59 | 362 | 834 | 1556 | 3361 | 5103 | 9798 | 19732 | 30527 |
360 | 3.6 | 363 | 835 | 1558 | 3365 | 5109 | 9809 | 19754 | 30564 |
372 | 3.72 | 369 | 850 | 1585 | 3423 | 5201 | 9979 | 20094 | 31108 |
376 | 3.76 | 371 | 854 | 1592 | 3438 | 5225 | 10024 | 20185 | 31253 |
380 | 3.8 | 373 | 859 | 1601 | 3457 | 5254 | 10081 | 20299 | 31423 |
392 | 3.92 | 379 | 873 | 1628 | 3515 | 5339 | 10251 | 20639 | 31933 |
400 | 4 | 383 | 883 | 1646 | 3554 | 5398 | 10342 | 20866 | 32274 |
408 | 4.08 | 388 | 892 | 1665 | 3592 | 5457 | 10433 | 21092 | 32614 |
412 | 4.12 | 390 | 896 | 1672 | 3608 | 5479 | 10478 | 21174 | 32750 |
420 | 4.2 | 394 | 906 | 1690 | 3646 | 5536 | 10592 | 21378 | 33090 |
425 | 4.25 | 396 | 912 | 1701 | 3670 | 5570 | 10660 | 21500 | 33294 |
Equipment Piping and Condensate Load
Typical maximum condensate load and equipment outlet pipe size:
Maximum Condensate Load (kg/h) | Outlet Pipe Size (mm, (in)) |
---|---|
200 | 15 (1/2) |
500 | 20 (3/4) |
1000 | 25 (1) |
2000 | 32 (1 1/4) |
3000 | 40 (1 1/2) |
5000 | 50 (2) |
> 5000 | 65 - 100 (2 1/2 - 4) |
Related Topics
• Sizing of Steam and Condensate Pipes
Dimensions of steam and condensate pipe lines. Calculate pressure losses, recommended velocities, capacities and more.
• Steam and Condensate
Design of steam & condensate systems with properties, capacities, sizing of pipe lines, system configuration and more.
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