Generation of Condensate in Cold Steam Pipes - SI Units
When cold steam pipes are heated up huge amounts of condensate is generated and must be drained from the pipe
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When cold steam pipes are heated up huge amounts of condensate is generated and must be drained from the pipe. It is important that the steam traps are designed to handle the start up load.
The diagram and table below can be used as a roughly estimate of the warm-up condensate load generated when the steam system is heated up.
| Condensate Load (kg/100 m) | ||||||||||||||
| Steam Pressure (bar) | Nominal Pipe Dimension (mm) | |||||||||||||
| 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | |
| 0 | 9.2 | 14.4 | 19 | 27 | 37 | 47 | 71 | 101 | 134 | 159 | 208 | 262 | 308 | 309 |
| 0.35 | 10 | 15.9 | 20.8 | 29 | 40 | 52 | 69 | 112 | 146 | 174 | 227 | 287 | 338 | 470 |
| 0.7 | 11.3 | 17.8 | 23.4 | 33 | 45 | 58 | 88 | 125 | 165 | 196 | 255 | 322 | 379 | 529 |
| 1 | 12.2 | 19.5 | 25.4 | 36 | 50 | 64 | 96 | 135 | 179 | 212 | 277 | 350 | 412 | 575 |
| 2.5 | 13.4 | 21.3 | 27.8 | 39 | 53 | 70 | 105 | 148 | 195 | 232 | 303 | 383 | 450 | 627 |
| 4 | 15.8 | 25.2 | 33 | 47 | 63 | 82 | 123 | 175 | 233 | 276 | 360 | 454 | 535 | 745 |
| 5.5 | 17.8 | 28 | 37 | 52 | 71 | 92 | 138 | 196 | 260 | 308 | 402 | 507 | 598 | 832 |
| 7 | 19.3 | 30.6 | 40 | 57 | 77 | 100 | 151 | 214 | 284 | 335 | 438 | 553 | 651 | 906 |
| 8.5 | 20.1 | 31.8 | 42 | 59 | 80 | 104 | 157 | 223 | 293 | 349 | 455 | 574 | 676 | 942 |
| 10 | 20.8 | 33.1 | 43 | 62 | 83 | 108 | 162 | 230 | 305 | 361 | 472 | 595 | 700 | 997 |
| 12 | 22.6 | 35.8 | 47 | 67 | 90 | 117 | 176 | 250 | 331 | 392 | 513 | 646 | 760 | 1059 |
| 14 | 24.2 | 38.2 | 50 | 71 | 96 | 125 | 189 | 267 | 353 | 418 | 546 | 689 | 811 | 1130 |
| 16 | 28.1 | 45 | 58 | 83 | 113 | 146 | 219 | 312 | 412 | 489 | 638 | 805 | 947 | 1320 |
| 20 | 36 | 55 | 74 | 108 | 150 | 205 | 312 | 463 | 637 | 764 | 981 | 1228 | 1503 | 1700 |
| 25 | 39 | 59 | 80 | 117 | 162 | 222 | 338 | 502 | 692 | 828 | 1065 | 1362 | 1631 | 2315 |
| 30 | 41.5 | 64 | 85 | 124 | 173 | 237 | 360 | 534 | 735 | 882 | 1134 | 1420 | 1763 | 2464 |
| 40 | 44.3 | 68 | 91 | 132 | 184 | 253 | 385 | 570 | 784 | 940 | 1210 | 1514 | 1852 | 2627 |
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