Document dEpOzD2312QD3YN9eYgkgrj5

Heating Ventilating Air Conditioning Guide 1939 .Table 1. Capacities for Black Iron Pipe A = Carrying capacities inMbh B = Velocity in inches per second Head Loss. Ft Milinch Friction Loss Per Foot ok Pipe 720 480 360 300 240 180 160 144 120 96 90 80 ' 70 60 Equivalent Length of Pipe in Feet (Longest Circuit) 2 2M 3 3K 4 4H 5 5M 6 6H 7 m 8 SH 9 9H 10 10H 11 11H 12 Nominal Pipe Size, In. 33 50 66 42 62 84 50 75 100 59 87 117 67 100- 133 75 112 149 83 125 167 92 137 183 100 150 200 108 162 217 116 175 233 124 187 249 133 200 266 142 212 283 150 225 300 159 237 317 167 250 333 175 262 349 183 275 366 192 287 383 200 300 400 80 100 120 140 160 180 .200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 100 133 125 167 150 200 175 233 200 266 225 300 250 333 275 366 300 400 325 433 350 465 375 500 400 533 425 566 450 600 475 633 500 666 525 700 550 733 575 766 600 800 150 188 225 167 208 250 200 250 300 250 312 375 270 333 400 300 375 450 340 428 510 400 500 600 263 300 338 291 350 437 463 525 593 333 400 500 533 600 685 374 450 562 593 675 758 700 800 900 375 416 500 625 666 750 860 Togo 413 450 457 500 550 600 6S7 750 713 809 825 923 900 1030 1100 1200 488 525 563 540 580 623 650 700 750 812 875 937 843 975 1088 933 1050 1200 973 1125 1252 1300 1400 1500 600 666 800 1000 1070 1200 1370 638 706 850 1062 1103 1275 1417 675 750 900 1125 1200 1350 1540 1800 713 750 789 950 1187 833 1000 1250 1233 1425 1577 1333 1500 1715 1000 788 872 1050 1312 1363 1575 1737 2100 825 .916 1100 1375. 1466 1650 1885 2200 863 955 1150 1437 1533 1725 1897 2300 900 1000 1200 1500 1600 1800 2030 2400 Capacity of Pipes Mbh With a 20 F* Drop A 20 16 14 13 11 10 9 9 8 7 7 6 6 6 B 27 22 19 17 16 18 12 It 10 9 9 8 8 7 A . xB 43 35 30 27 24 21 19 18 17 15 14 13 12 ll 33 25 23 21 18 16 16 14 18 11 11 10 9 9 A l . B 85 70 60 54 48 41 39 36 33 30 28 27 25 23 89 32 27 25 22 19 18 17 16 13 13 12 11 10 A IX B 180 145 125 115 98 85 80 75 ' 68 60 58 55 51 47 SB 89 S3 SO 27 28 21 20 19 16 16 15 14 It A ' ix B A 2B . 285 230 195 180 160 135 125 120 110 H 44 88 34 50 26 28 21 96 19 540 .435 370 340 300 255 240 230 205 180 e4 52 45 40 86 ''SO 29 27 14 22 92 88 18 17 175 165 21 . 80 82 16 150 19 75 H 140 17 A 2H B A 3 B. 890 720 610 550 74 60 60 4B 1650 1340 1130 1000 88. 70 60 64 480 .41 9004B. 420 '390 85 S3 7C0 . 720 4t 88 370 330 300 280 270 250 31 28 24 84 22 21 670 600 540 520 480 450 36 33 29 28 26 84 230 19 410 t A 3X B 2500 2000 1700 1500 1350 1150 1080 1000 900 800 760 720 670 620 99 78 66 60 - 64 40 4S 40 86 : 32 . SI 29 27 t5 A V 3500 2800 2400 2200 1900 1600 1520 1440 1300 1150 1100 1050 960 m 4B no 87 74 66 68 60 47 46 40 85 84 82 so V A 7000 5600 4700 4300 3700 3200 3000 2750 2500 2200 2100 2000 1800 1700 5 B_^ '.182 106 90 80 70 80 66 68 48 41 41 88 5-J SB A 12.000 9200 7800 7000 6200 5200 4800 4600 4100 3600 3500 3300 3000 . 2800 6B 156 184 104 94 82 69 64 61 55 48 48 44 S' fFor other temperature drops the pipe capacities may be changed correspondingly. *:For example. with i temperature drop of 30 F. the capacities shown-in this table are to be multiplied by 1.5. 344 Chapter 17. Hot Water Heating Systems and Piping Table 2. Capacities for Type L Copper Tube A = Carrying capacity in Mbh B -- Velocity in inches per second Milinch Friction Loss per Foot of Tube HEAD LOSS 720 600 480 360 300 240 180 150 120 90 Equiv uhnt LENGTB Gif Tube in Feb1r (Long SST ClRC*un) -- 2 2H 3 . 50 ~ 3H~ 4 *x 75 5 6 100 40 50 60 70 80 90 100 110 120 108 130 117 140 IK 125 150 133 160 142 170 9 150 180 10X 159 190 167 200 175 210 183 220 192 230 12 *200~ 240 Nominal 50 63 75 88 100 113 125 138 150 163 175 188 200 213 225 238 250 263 275 288 300 Size. In. 67 80 100 133 160 83 100 125 167 200 100 120. 150 200 240 200 267 250 333 300 400 117 140 175 233 280 133 160 200 267 320 150 180 225 300 360 350 467 400 533 450 600 167 200 250 333 .400 183 220 275 367 440 200 240 300 400 480 500 667 550 733 600 800 217 260 325 433 520 233 280 350 467 560 250 300 375 500 600 650 867 700 933 750 1000 267 320 400 283 340 425 300 360 450 533 640 567 680 600 720 800 1067 850 1133 900 1200 317 380 475 633 760 950 1267 333 400 500 667 800 1000 1333 350 420 525 700 840 1050 1400 367 440 550 733 - 880 1100 1467 383 460 575 767 920 1150 1533 400 480 600 800 960 1200 1600 Capacity of Tubes Mbh With a 20 F* Drop 75 60 320 400 400 500 480 600 560 700 640 800 720 900 800 1000 880 1100 960 1200 1040 1120 1200 1300 1400 1500 1280 1360 1440 1600 1700 1800 1520 1900 1600 2000 1680 2100 1760 1840 1920 2200 2300 2400 A XB 10 9 8 27 84 21 6.8 18 6.2 16.6 5.4 14 4.6 IS 4 11 3.6 3 2.8 10 8.6 8 A 20 18 16 13.5 12 10.8 9 8 7 6 XB 38 SO 26 21 19 17 16 18 12 10 5.4 9 A XB 36 30 26 22.1 .. 20 37 84 30 84 21 17.8 19 15 17 13.1 11.8 9.9 9 16 18 11 10 A 51 46 40 34 31 28 23.2 20.5 18.1 15.3 13.9 XB 42 38 S3 27 84 21 19 . 17 14 12 11.6 A " 104 94 82 70 63 56. ' 47 42 37 32 28 1B 48 46 89 *4 50. 26 22 19 17 146 13 A 185 169 149 125 112 100- 84 75 66 56 50 IX B 66 61 46 89 85 SO 26 22 19 17 16 A 300 270 235 200 180 160 134 120 105 IX B 62 67 61 48 89 86 . . 80 26 22 90 81 19 .17 A 625 560 495 420 375 335 280 250 200 188 170 2B 76 68 69 61 47 48 86 82 27. 22 20 A 1130 1010 890 750 680 600 500 ' 450 395 335 305 2X B 90 80 69 58 48 47 48 87 38 26 28 -A A 3>$ B A 1840 1650 1450 1210 98 90 80 66 2750 2480 2170- 1840 110 loo .89 76 3900 3505 3100 2600 120 108 96 88 1100 59 1650 66 2350 75 980 820 62 47 1450 67 1210 51 2090 1760 68 . - 66 740 42 1100 46 1580 49 650 86 980 . 4 1390 . 44 550 SO . 820 36 1180 37 490 27 740 SO 1080 34 2.4 7 4.7 8 7.9 9 12.1 10 25 12 44 13 71 16 150 18 270 21 420 28 650 26 950 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 1.5 345