Document n9jV7EMY5G2p1MedkvQ6xKrQw

Heating Ventilating Air Conditioning Guide 1938 Table 1. Capacities for Black Iron Pipe A = Carrying capacities inMbh B = Velocity in inches per second Hbad Loss. Ft Milinch .Friction Loss Per Foot of Pipe 720 480 360 300 240 ISO 160 144 120 96 90 80 70 60 Equivalent Length of Pipe in Feet (Longest Circuit) 2 3 3M 4 4K 5 5M 6 6M 7 7K 8 8M 9 9X 10 iok 11 11H .12 Nominal Pipe Size, In. 33 50 66 80 100 133 150 167 200 250 270 300 340 400 42 62 84 100 125 167 188 208 250 312 333 375 428 500 50 75 100 120 150 200 225 250 300 375 -400 450 510 600 59 87 117 140 175 233 263 291 350 437 463 525 593 700 67 100 133 160 200 266 300 333 400 500 533 600 685 800 75 112 149 180 225 300 338 374 450 562 593 675 758 900 83 125 167 200 250 333 375 416 500 625 666 750 860 1000 92 137 183 220 275 366 413 457 550 6S7 713 825 923 1100 100 150 200 240 300 400 450 500 600 750 800 900 1030 1200 108 162 217 260 325 433 488 540 650 812 843 975 1088 1300 116 175 233 280 350 465 525 580 700 875 933 1050 1200 1400 124 187 249 300 375 500 563 623 750 937 973 1125 1252 1500 133 200 266 320 400 533 600 666 800 1000 1070 1200 1370 1600 142 212 283 340 425 566 638 706 850 1062 1103 1275 1417 1700 150 225 300 360 450 600 675 750 900 1125 1200 1350 1540 1800 159 237 317 380 475 633 713 789 950 1187 1233 1425 1577 1900 167 250 333 400 500 666 750 833 1000 1250 1333 1500 1715 2000 175 262 349 420 525 700 788 872 1050 1312 1363 1575 1737 2100 183 275 366 440 550 733 825 916 1100 1375 1466 1650 1885 2200 192 287 383 460 575 766 863 955 1150 1437 1533 1725 1897 2300 200 300 400 480 600 800 900 1000 1200 1500 1600 1800 2030 2400 Capacity of Pipes Mbh With a 20 F* Drop A' KB A HB A 1B a' lH B A IK B A 2B A 2K B A 3B A 3K B A 4B A 5B A 6B 20 16 14 13 11 10 9 9 8 7 7 6 6 27 88 19 17 15 IS 18 11 10 9 9 8 8 5 7 43 35 30 27 24 21 19 18 17 15 14 13 12 11 S3 86 83 81 18 16 15 14 IS 11 11 10 9 9 85 70 60 54 48 41 39 36 33 30 28 27 25 23 39 38 87 85 88 19 18 17 16 13 13 18 11 10 180 145 125 115 98 85 80 75 68 60 58 55 51 48 39 S3 SO 87 83 81 80 19 16 16 16 14 47 18 285 230 195 180 160 135 125 120 110 96 92 88 82 54 44 38 S4 SO 86 84 83 81 19 18 . 17 15 75 14 540 435 370 340 300 255 240 230 205 180 .175 165 150 64 58 46 40 36 SO 89 87 84 88 81 SO 19 890 720 610 550 480 420 390 370 330 300 280 270 250 74 60 60 4B 41 35 S3 ' 31 88 34 34 88 81 140 17 230 19 1650 1340 1130 1000 900 760 720 670 600 540 520 480 450 88 70 60 64 48 41 38 36 S3 * 89 88 86 84 410 88 2500 2000 1700 1500 1350 1150 1080 1000 900 800 760 720 670 99 78 66 60 64 46 43 40 36 38 31 89 87 620 85 3500 2800 2400 2200 1900 1600 1520 1440 1300 1150 1100 1050 960 110 87 74 66 58 50 47 46 40 35 34 38 SO 7000 5600 4700 4300 3700 3200 3000 2750 2500 2200 2100 2000 1800 138 106 90 80 70 60 56 63 43 43 41 38 35 880 87 1700 38 12.000 9200 7800 7000 6200 5200 4800 4600 4100 3600 3500 3300 3000 2800 156 184 104 94 88 69 64 61 55 48 48 44 41 57 ftFor other temperature drops the pipe capacities may be changed correspondingly. For example, with a temperature drop of 30 F, the capacities shown in this table are to be multiplied by 1.5. 338 Chapter 17. Hot Water Heating Systems and Piping Table 2. Capacities foe Type L Copper Tube A = Carrying capacity in Mbh B = Velocity in inches per second Head Loss Ft Milinch Friction Loss per Foot of Tube 720 600 480 360 300 240 ISO 150 120 90 Equivalent Length of Tube in Feet (Longest Circuit) -75 60 2H 3 3K 4K 5H 6 6M 7 7H 8 8H 9 9M TO 10K 11 UJ* 12 33 40 42 50 60 58 70 67 80 75 90 83 100 92 110 100 120 108 130 117 140 125 150 133 160 142 170 150 180 159 190 167 200 175 210 183 220 192. 230 200 240 50 63 75 88 100 113 125 138 150 163 175 188 200 213 225 238 250 263 275 288 300 Nominal Size. Ln. 67 80 100 133 160 200 267 320 83 100 125 167 200 250 333 400 100 120 150 200 240 300 400 480 117 140 175 233 280 350 467 . 560 133 160 200 267 320 400 533 640 150 180 225 300 360 450 600 720 167 200 250 333 400 183 220 275 367 440 200 240 300 400 480 500 667 800 550 733 880 600 800 960 217 260 325 433 520 233 280 350 467 560 250 300 375 500 600 650 867 1040 700 933 1120 750 1000 1200 267 320 400 533 640 283 340 425 567 680 300 360. 450 600 .720 800 1067 1280 850 1133 1360 900 1200 1440 317 380 475 633 760 950 1267 1520 333 400 500 667 800 1000 1333 1600 350 420 525 700 840 1050 1400 1680 367 440 550 733 880 1100 1467 1760 383 460 575 767 920 1150 1533 1840 400 480 600 800 960 1200 1600 1920 Capacity of Tubes Mbh With a 20 F" Drop 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 16001700 1800 1900 2000 2100 2200 2300 2400 A HB 10 9 8 6.8 87 84 81 18 A KB 20 18 16 13.5 S3 SO 85 81 A HB 36 30 26 22.1 57 34 SO A %B 51 46 40 34 43 38 55 87 A 1B 104 94 82 70 48 46 39 84 A 185 169 149 125 IK B 66 51 46 39 A IK B 300 270 235 200 68 67 51 48 A 2B 625 560 495 420 76 68 69 51 A 1130 1010 890 750 2K B 90 80 69 , 68 A 1840 1650 1450 1210 3B 98 90 80 66 A 2750 2480 2170 1840 . 3K B 110 100 89 76 A 3900 3505 3100 2600 4B ISO 108 96 88 6.2 16.5 12 19 20 81 31 34 63 SO 112 35 180 59 375 47 680 49 1100 59 1650 66 2350 75 5.4 14 10.8 17 17.8 19 28 81 56 85 100 SO 160 55 335 43 600 47 980 68 1450 57 2090 . 55 4.6 IS 4 11 3.6 10 3 8.5 98 76 15 IS 18 10 15 13.1 11.8 9.9 17 16 IS 11 23.2 to 20.5 17 18.1 14 15.3 18 * 47 42 37 . 32 88 19 17 14-6 84 75 66 56 85 88 19 17 134 120 105 90 SO 85 ' 88 19 280 250 200 188 86 38 87 88 500 450 395 335 43 57 S3 86 820 740 650 * 550 47 43 86 50 1210 61 1760 55 1100 980 46 . . 1580 49 1390 44 820 55 -1180 57 2.8 8 5.4 9 9 10 13.9 11.6 28 13 50 15 81 17 170 20 305 23 490 27 740 . SO. 1080 34 2.4 7 4.7 8 7.9 9 12.1 10 25 r12 44 IS 71 15 150 18 270 81 420 83 650 86 950 29 "For other temperature drops the pipe capacities may be changed correspondingly. For example, with a temperature drop of 30 F, the capacities shown in this table are to be multiplied by 1.5. 339