Page 96 - Process Equipment and Plant Design Principles and Practices by Subhabrata Ray Gargi Das

4.4 Design e F T method 93

Table 4.8b Tube count e triangular pitch.
3
3
00 00
5 00
19.05 mm 4 OD on 33.3 mm 1 16 triangular pitch 19.05 mm 4 OD on 25.4 mm (1 ) triangular pitch
00
Shell 1eP 2eP 4eP 6eP 8eP Shell ID, 1eP 2eP 4eP 6eP 8eP
ID, mm(in.) mm(inch)
203(8) 36 32 26 24 18 203(8) 37 30 24 24
254(10) 62 56 47 42 36 254(10) 61 52 40 36
305(12) 109 98 86 82 78 305(12) 92 82 76 74 70

336.5 13 1 127 114 96 90 86 336:5 13 1 109 106 86 82 74
4 4

387 15 1 170 160 140 136 128 387 15 1 151 138 122 118 110
4 4

438 17 1 239 224 194 188 178 438 17 1 203 196 178 172 166
4 4

489 19 1 301 282 252 244 234 489 19 1 262 250 226 216 210
4 4

540 21 1 361 342 314 306 290 540 21 1 316 302 278 272 260
4 4
1 1
590.55 23 442 420 386 378 364 590:55 23 384 376 352 342 328
4 4
635(25) 532 506 468 446 434 635(25) 470 452 422 394 382
686(27) 637 602 550 536 524 686(27) 559 534 488 474 464
736(29) 721 692 640 620 594 736(29) 630 604 556 538 508
787.4(31) 847 822 766 722 720 787.4(31) 745 728 678 666 640
838(33) 974 938 878 852 826 838(33) 856 830 774 760 732
889(35) 1102 1068 1004 988 958 889(35) 970 938 882 864 848
940(37) 1240 1200 1144 1104 1072 940(37) 1074 1044 1012 986 870
990.6(39) 1377 1330 1258 1248 1212 990.6(39) 1206 1176 1128 1100 1078

25.40 mm (1 ) OD on 31.75 mm 1 1 00 triangular pitch 31.75 mm 1 1 00 OD on 40 mm 1 16 triangular pitch
9 00
00
4
4
203(8) 21 16 16 14
254(10) 32 32 26 24 254(10) 20 18 14
305(12) 55 52 48 46 44 305(12) 32 30 26 22 20

336.5 13 1 68 66 58 54 50 336.5 13 1 38 36 32 28 26
4 4
1 1
387 15 91 86 80 74 72 387 15 54 51 45 42 38
4 4
1 1
438 17 131 118 106 104 94 438 17 69 66 62 58 54
4 4
1 1
489 19 163 152 140 136 128 489 19 95 91 86 78 69
4 4
1 1
540 21 199 188 170 164 160 540 21 117 112 105 101 95
4 4
1 1
590.55 23 241 232 212 212 202 590.55 23 140 136 130 123 117
4 4
635(25) 294 282 256 252 242 635(25) 170 164 155 150 140
686(27) 349 334 302 296 286 686(27) 202 196 185 179 170
Continued