Document jzOnb7kMq02rVMD8J3vV75R9

288 Chapter IS 1945 Gdide Table 1. Heat-carrying Capacity of Standard Black Pipes ' with Temperature Drop of 20 Fa Nominal Pipe Sizes y's in. to 18 in., and Friction Heads 4 to 800 milinches per foot (A = Capacity, Mbh. B = Velocity, inches per second) (One milinch equals 0.001 in.) Milinch Fbio- Nominal Pm Sub, Inches Foot op Pm 4 6 8 10 12 14 16 20 25 30 35 40 ' 50 60 70 SO A .B A B A B A .B A B A B A B A ,? A B A B A B A B A B A B A B A B X X X 1 IX IX 2 2X 3 3X 4 5 6 8 10 12 0.75 135 2.85 5.4 113 17.0 33.0 53.1 95 141 197 363 696 1250 2320 3730 1.5 1.7 2.1 2.4 2.9 33 33 43 5.0 5.5 6.0 7.0 7.9 . 9.6 11 12 0.9 1.7 3.6 6.75 14.0 213 413 66.4 119 176 248 456 748 1570 2920 4690 1.8 2.1 2.6 3.0 3.6 4.0 4.7 63 63 6.9 73 83 10 12 ` 14 16 1.05 2.0 43 7.9 16.4 24.8 48.4 77.9 140 207 291 535 879 1850 3440 5520 2.1 23 3.0 33 43 4.7 5.6 63 73 8.0 8.8 10 12 14 17 19 U 23 4.7 8.9 18.6 23.0 54.7 88.1 ~ 158 234 329 605 997 2100 3910 6270 2.4 2.8 3.4 4.0 43 53 63 7.1 83 0.1 9.9 12 13 16 19 27 1.35 2.45 63 93 203 31.0 60.4 97.4 175 259 364 671 1100 2320 4330 6950 2.7 3.1 3.7 4.4 5.3 5.9 6.9 73 9.1 10 11 13 15 ' 18 21 24 1.45 2.65 5.65 10.7 223 33.7 65.8 106 190 282 397 731 1200 2530 4730 7590 2.9 3.4 4.1 43 5.7 6.4 7.6 83 9.9 11 12 14 16 20 23 26 1.55 235 6.05 113 24.0 363 703 114 205 303 428 787 1300 2730 5100 8190 3.1 3.6 4.4 5.1 63 6.9 8.1 9.7 11 12 13 15 17 21 25 28 1.75 335 6.85 13.0 27.1 41.0 80.0 129 232 344 484 892 1470 3100 5790 9300 3.5 4.1 4.9 53 7.0 7.7 93 10 12 13 15 17 20 24 28 32 2.0 3.65 7.75 14.7 30.6 463 903 146 263 389 548 1010 1670 3510 6570 10560 4.0 4.6 5.6 63 7.9 83 10 12 14 15 17 19 22 27 32 36 2.2 4.0 835 163 33.8 51.2 100 162 290 430 607 1120 1850 3900 7280 11710 4.4 5.1 6.1 73 8.7 9.7 11 13 15 17 18 22 25 30 35 40 2.35 4.4 93 17.6 363 55 7 109 176 316 469 661 1220 2010 4250 7940 12780 4.7 53 6.7 73 93 11 13 14 16 18 20 23 27 33 39 44 2.55 4.7 10.0 18.9 39.6 59.9 117 189 341 505 712 1320 2170 4580 8570 13780 5.1 5.9 73 8.4 10 11 13 15 18 20 22 25 29 35 42 47 2.85 53 113 21.4 44.7 67.7 133 214 386 572 807 1490 2460 5190 9720 15650 5.7 6.7 8.1 93 12 13 15 17 20 22 24 29 33 40 47 54 3.15 535 12.4 23.6 49.4 74.9 147 238 . 427 633 893 1650 2730 5760 10780 17360 &3 .7.4 8.9 11 13 14 17 19 22 25 27 . 32 36 44 52 60 3.45 635 133 25.7 53.8 81.4 160 258 465 690 973 1800 2970 6280 11760 18950 6.9 8.0 0J 11 14 15 is 21 24 27 29 35 40 48 57 65 3.7 63 143 27.6 57.9 87.6 172 278 500 743 1050 1940 3200 6770 12690 20440 7.4 8.6 10 12 15 17 20 22 26 29 32 37 43 52 62 70 ioo-^ 150 200 300 400 A B A B A B A B A B 4.15 7.7 16.4 31.1 65.4 993 194 314 566 $40 1190 2200 3630 7680 14400 23200 83 9.7 12 14 17 19 22 25 30 33 .36 42 48 59 70 80 53 9.6 20.4 383 81.6 124 243 393 709 1050 1490 2760 4560 9650 18120 29220 10 12 15 17 21 23 28 32 37 41 45 53 61 74 88 101 6.05 113 23.9 45.4 953 145 285 461 832 1240 1750 3240 5360 11350 21320 34400 12 14 17 20 25 27 33 37 43 48 53 62 71 87 104 118 73 13.9 29.7 56.6 119 181 356 577 1040 1550 2190 4060 6730 14270 26830 43300 15 18 21 25 31 34 41 46 54 (SO 66 78 90 110 131 149 8.75 163 34.7 663 140 212 417 676 1220 1820 2570 4780 7910 16790 31580 51000 18 21 26 30 36 40 48 54 64 71 78 92 105 129 154 175 500 600 * 800 A 9.85 183 393 748 158 239 471 765 1380 2060 2910 5410 8970 19040 35840 57880 B 20 23 29 33 41 45 54 62 72 80 88 104 119 147 174 199 A 10.9 20.2 433 823 174 264 521 846 1530 2280 3220 5990 9930 21100 39740 64210 B 22 26 32 37 45 50 60 68 80 89 97 115 132 162 193 221 A 12.7 23.6 503 963 204 310 610 992 1790 2670 3780 7030 11670 24820 46780 75620 B 25 30 37 43 52 59 70 80 94 104 114 135 155 191 228 260 "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. Hot Water Heating Systems and Piping 289 Table 2. Heat-carrying Capacity of Type L Copper Tubing with Temperature Drop of 20 F3 Nominal Tube Sizes in. to 4 in., and Friction Heads 60 to 780 milinches perfool. (A = Capacity, Mbh. B =- Velocity, inches per second!) (One milinch equals 0.001. in.) Nominal Tubs Sub, In. A XB A XB A XB A XB A 1B A B A 1H B A 2B A B A B A B .A B Milinch Friction Loss per Foot or Tubb 720 10 27 20 35 '36 37 51 42 104 48 185 55 300 62 625 76 1130 90 1840 98 2750 110 3900 . 120 600 480 360 300 9 8 6J8 6.2 24 21 18 16.5 18 16 30 ' 25 13.5 12 21 19 30 26 22.1 20 34 30 .24 21 46 40 34 31 38 33 . 27 24 94 82 70 63 45 39 34 30 169 149 125 112 51 . 45 39 35 270 235 .200 180 57 51 43 39 560 495 420 375 68 59 51 47 1010 890 750 680 80 69 58 49 1650 1450 1210 1100 90 80 66 59 2480 2170 1840 1650 100 89 75 66 3505 3100 2600 2350 108 96 83 73 240 180 5.4 4.6 14 13 10.8 9 17 15 17.8 15 19 . 17 28 23.2 21 19 56 47 25 22 100 84 30 25 160 134 35 30 335 280 42 36 600 . 500 47 42 980 820 52 47 1450 1210 57 51 2090 1760 63 55 150 4 11 8 13 13.1 15 20.5 17 42 19 75 22 120 25 250 32 450 37 740 42 1100 45 1580 49 120 3.6 10 7 12 11.8 13 18.1 14 37 17 66 . 19 105 . 22 200 27 395 33 650 36 980 40 1390 44 90 75 60 3 2J8 2.4 8.5 8 7 6 ' 5.4 4.7 10 9 . 8 9.9 9 ' 7.9 11 10 9 15.3 13.9 12.1 12 IIJ5 10 32 28 25 14.5 13 12 56 50 -44 17 15 13 90 ' 81 19 17 71 15 188 170 150 22 20 18 335 305 270 26 23 21 550 490 420 30 27 23 820 740 650 35 30 26 1180 1080 37 34 950 29 *For other temperature drops the pipe capacities may be changed correspondingly. For example, with temperature drop of 30 F, the capacities shown in this table are to be multiplied by 1.5. Table 3. Iron and Copper Elbow Equivalents* Fitting Iron Pipe Copper Turing Elbow, 90-deg______________ Elbow, 45-deg______________ Elbow, 90-deg long turn____ Elbow, welded, 90-deg._____ Reducing coupling.________ _ Open return band______ ' , Open gate valve............ .......... Open globe valve. Angle radiator valve._______ Radiator or convector._____ Boiler or heater.____________ Tee, per cent flowing through branch: 100 60._____ 25._________ ~' .................. ... 1.0 0.7 0.5 0.5 0.4 1.0 0.5 12.0 2.0 3.0 3.0 1.8 4.0 16.0 1.0 0.7 0.5 0.5 0;4 1.0 0.7 17.0 3.0 . 4.0 4.0 1.2 4.0 20.0 straight6 ^ead h* one 90 jfc* standard elbow Is approximately equal to the friction'of a length of divide*) v> ?* 5" r s*11?* nominal sire and .-25 diam long. Hence one elbow equivalent equals 25 D wacu oy ir teet of straight pipe or tubing.