Document NE56p21V5kpqEmwK9RwnG3nbR

Table 6. Return Pipe Capacities fob Low Pressure Ststbms. ' Capacity Expressed In Square Feet of Equivalent Direct Radiation '' (Reference to this table will be by column letter M through EE) r- . This table is based on pipe aiae data developed through the research investigations of the American Society o? Heating and Ventilating Engineers. CAPACITY OF RETURN MAINS AND RISERS Pm 8m Inches /a Prior H Os Drop per 100 Ft Wet Dry Vac. .U | N o P >/n Ptri cr H Oi Drop per 100 Ft Wet Dry Vac. 0Ra Mains ' Vie Pri or 1 Os Drop per 100 Ft... Wet Dry Vac. X W or 2 Os . Drop per 100 Ft Wet Dry Vae. `T V V ; IP X r. Rd or 4 O* Drop per 100 Ft Wet Dry. Vac. Z AA BB , _M Pri or'8 0s Drop per 100 Ft Wet Dry Vac. CC DD EE %A 1 soo "248 VA 850 520 1,350 822 2 2,800 1,880 2H 4,700 3,040 .3 7,500 5,840 3A 11,000 7,880 :4 15,500 11,700 5 . :ZI --- 326 400 568 "580 ~28S 570 "700 "320 700 r,o6o "412 994 Moo "460 990 595 .976 1,200 670 1,200 1.700 868 1.700 2.400 .962 1,570 943 1,550 1,900 1,060 1,900 2.700 1,360 2.700 3,800 1,510 3,240 2,140 3,260 4.000 2,300 4.000 5,600 2,960 5,680 tf.OOO .3,300 5,300 3,470 5,450 6.700 3,800 6,700 9,400 4.900 9.5101 13.400 5,450 8,500 6,250 8,710 10.700 7,000 10.700 15.000 9,000 15.200 21.400 10,000 13,200 8,800 13.000 16.000 10,000 16.000 22.000 12.900 22,700 32.000 14,300 18,300 13;400 18.000 22,000 15,000 22,000 31,000 19,300 31.200 44.000 21,500 31,500 38.700 54,900 50,450 62,000 88,000 800 1,400 . 2,400 3,800 '8,000 13.400 21.400 32.000 44.000 77.400 124,000 -- --- 1,130 1,980 3,390 5,370 11,300 18,900 30,200 "45,200 , 62,190 109;000 175,000 ; r' : lA. 1 W* 1H 2 2H 3 3H 4 S . 190 , 450 990 1,500 3,000 .. .190 ." 570 ,-450 ,976 ?990 i-,S50 1,500 3,2<5b 3,000 5,450 _ 8,710 13,000 17,900 :r . 31,500, 50,500 . Risers .' 190 700 450 1,200 ; 990 1,900 1,500 4,000 .. " 3,000 6,700 ____ 10,700 ----- 16,000 22,000 : . - 38,700 62,000 190 994 : '450 1 ,'700 .. 990 ,-2,700 ...:. 1,500 .5,680 3,000 9,510 ........ 15,200 22,700 31,200, 54;900 ____ ' 88,000 -- 190 -' 450 990 MOO 3,000 : .. 1,400 2,400 3,800 8,000 13,400 21,400 32', 000 44,000 77,400 124,000 ^..... - -- --- 1,980 3,390 5,370 11,300 181900 30,200 45.200 62.200 109,000 175,000 23 " ' ' .. r ,. 1949 Guide Steam Heating Systems and Piping ' Table 7. Return Pipe Capacities for Low Pressure Systems Capacity Expressed in'Pounds per Hour (Reference to this table will be made by column letter if through EE) This table is based on pipe site data developed through the research investigations of the American Society of Heating and Ventilating Engineers. ; . CAPACITY OP RETURN MAINS AND RISERS Pipe Sits Inches ' M" H l iM lA 2 2A 3 3A 4 5 6 | - V6 Pri or H Os Dropper 100;Ft Wet Dry Vac, * 0 P. 125 62 213 130 338 206 . 700 . 470 1,180 760 1,880 -1,460 2,750 1,970 3,880 2,930 f Vm Pri or H Oa Drop per 100 Ft % Psi or t Oi V, Drop per 100 Ft Mains ii Pei or 2 Ol Drop per 100 Ft _K Pei or 4 Oa Drop per 100 Ft Wet Dry Vao. . Wet Dry Vac.-. Wet Dry Vac. Wet Dry Vao. Q R S T .. U V IP X Y Z AA BB 42 10a 142 200 145 71 143 175 80 175 *250 103 249 350 115 350 248 149 244 300 168 300 425 217 426 600 241 600 393 236 . 388 . .475 265 475 675 340 674 950 378 950 810 535 815 1,000 575 1,000 1,400 740 1,420 2,000 825 2,000 1,580 868 1,360 1,680 950 1,680 2,350 1,230 2,380 3,350 1,360 3,350 2,130 1,560 2,180 2,680 1,750 2,680 3,750 2,250 3,800 5,350 2,500 5,350 3,300 2,200 3,250 4,000 2,500 4,000 5,500 3,230 5,680 8,000 3,580 8,000 4,580 3,350 4,500 5,500 3,750 5,500 7,750 .4,830 7,810, 11,000 5,380 11,000 .7,880 12,600 9,680 15,500 13,700 19,400 22,000 .... ........ . 31,000 _V$ Pri or 8 Oa Drop per 100 Ft Wet Dry . Vac. CC DD ' EE" . 283494- . 848 1,340 2,830 4,730 7,560 11,300 ,15,500 27,300 43,800 Risers'- `A 1 ` i# 2. VA 3 3A 4-" 5 48 113 248 375 750 48 143 113 244 248 388 375 . 815 750 1,360 2,180 . 3,250 4,480 7,880 12,600 48 175 48 249 113 300 113 426 248 475 .......... 248 674 375 1,000 375 1,420 : 750 1,680 . 750 2,380 2,680 3,800 4,000 5,680 5,500 7,810 9,680 . 13,700 15,500 22,000 48 350 113 600 .248 950 375 2,000 750 3.350 5.350 8,000 11,000 19,400 31,000 494 848 1,340 2,830 4,730 7,560 11,300 15,500 27,300 43,800 \ ' . 481