Document 44Yame9z5wo1aoz9Rv5amKz8Q

American Society of Heating and Ventilating Engineers Guide, 1930 336 T able 2. Pressure L oss, Capacity in Square F eet of E q u iv a le n t R a d ia tio n and V elo city R elatio n sh ip Based on L IT a b le 1, for V arious Pressure D rops w it h 1 b . n it ia l Steam Pressure (N ote.-- N o a llo w a n c e fo r condensation in pipe-- unusual fric tio n -- scale-- corrosion o r other factors.) - On On rO r-- P ressure Loss in O unces per 100 F t . Sq. Ft. 28 1 Velocity F t per Second i 7.5 Sq. Ft. CM t-** v-H 87 - CM CO 56 122 25- 1 96 28 212 35 r- sco 124 i 274 300 43 324 47 346 NO r-- NO CM fO to fN* On to NO r-- 00 o CM In. OO co CM O o 3>o r-N 58 424 208 | 458 223 490 20 249 548 24 273 82 ' 009 r- to t* CM On U"> CM * CO NO r-- % 5 Velocity 1 Ft. per Second 95 Velocity Ft. per Second !> r*-> 30 | 38 i 43 i 52 56 61 190 269 | 329 380 425 466 503 . 538 34 42 49 55 59 66 89 On t-- r-- oo 8 NO In. t-- oo fN. 659 80 86 H 94 100 96 CM CM o o NO 931 T* CM CO * fS to 1^. PIPE SIZE Sq. Ft. Velocity Ft. per Second 273 386 546 1 43 668 53 r~r- r-- 62 863 69 945 1020 83 1091 89 66 1220 1336 109 OO oo 1443 1543 126 1806 1890 154 * Sq. Ft. Velocity F t per Second N 318 449 24 635 36 1 50 OO. On OO 1100 62 1270 72 1421 1 80 N*tooO 88 o 3On 1681 1797 102 2009 to wCM CO 2201 2377 2541 N^1O ICn*.. 2841 3113 %*) ' +* & oo lO 822 1163 1645 2014 2326 2600 2848 3077 3289 3677 4028 4351 4651 5200 5697 Velocity 1 Ft. per Second Velocity Ft. per Seoond 698 CM 23 30 1228. 33 is. oo 3 s** N 8 1737 2457 68 74 3009 WOOO 3474 97 95 3884 105 4255 113 4596 128 o CO CM CM 4913 to 135 5493 fN wNO 148 6017 oOo 164 6500 3 ONOn Itno. 192 to CM NO O^4N 7768 215 8510 238 * > 5. & I Chapter 20--Piping for Steam Heating Systems 337 T able 2. (Continued) PIPE SIZE *'O P CCnM. CO k^ *o * 00 .4 In. On CM fc TP CM ON CM ' -z S k rO |N. CM CM CM CO k a as p go S g e- H Velocity Ft. per Second Sq. Ft. Velocity F t per Second Velocity Sq. Ft. . Ft. per Second Sq. F t Velocity Ft. per Second Velocity Ft. per Second Sq. F t Velocity Ft. per Second Sq. Ft. Velocity Ft. per Second is 1229 26 29 3731 .35 7766 42 | 14,172 48 22,746 52 42,470 62 961 09 tC-NM. CM t0o0 8 CM 3. < ^4 1738 37 5276 49 10,983 20,043 32,168 76 60,061 88 3 s CM 4 CM ^4 to ON CM cO 2457 4546 49 7462 15,533 86 28,345 100 45,492 108 84,940 125 3475 74 6429 10,553 21,967 140 64,336 152 121,012 180 i 4256 7874 26,904 49,094. 78,795 184 147,120 220 4914 105 9092 14,924 139 31,066 164 56,689 192 90,985 212 169,879 252 oo oo CM oo NO C* CM 8 NO r-N- to NO c. oo CM 5494 10,165 135 16,685 156 34,733 184 63,380 224 101,724 240 189,937 280 6019 11,135 18,278 38,048 204 69,430 244 111,433. 264 208,059 308 6501 139 12,027 19,742 41,096 220 74,993 264 120,361 224,729 336 NtoO CO 6950 148 12,858 21,105 43,934 234 80,171 284 128,672 304 240,245 'nO 3 NO NO NO On CM 7770 14,376 193 23,597 NO CM 49,120 268 89,633 312 143,860 340 268,603 .400 8512 182 15,748 212 25,849 232 53,808 288 98,188 344 -157,590 294,236 ITn*. T* 80S tC-M. oT#c* CO Tjt NO CM CO 5t 9194 In. 224 27,920 260 58,120 106,056 170,217 404 317,815 NO NO |N CM CO NO 9829 18,184 234 29,848 62,132 340 113,378 394 181,969 428 339,758 20 10,989 235 20,331 260 33,371 NO s s 380 126,768 444 203,448 480 379,861 568 24 12,038 249 22,270 280 36,556 332 76,096 138,859 222,866 520 416,117 624 \ iNote 1.-- Capacities based on lb . condensation per square fo o t equivalent ra d ia tio n -- steam and condensation flow ing In same d ire ctio n-- actual diam eter of 8tandar<i P i P * ^ capacity of pipe, w ith a given pressure drop, in a length other than 100 ft., m u ltip ly the capacity in th is table fo r the given pressure per 100 ft. . . . . . . .drop by the Note facto 8 ,-- F r o f r or ca preaqcuitiyrewditlhe ning tithi a, lCporelusmsunreBs , Table other th 3. an 1 lb., m u ltip ly ................................ capacity given in this table by factor , for the required in itia l pressure. . C olum n 2, Table 3. Note 4:-- T o determ ine pressure loss w ith a given capacity fo r other lengths of pipe than 100ft.. m u ltip ly pressure loss given in th is table fo r the given capacity by th e requ Note ired 6 .-- length E x tra of len gptiph et oa nbde divide added by to 100. straight run of pipe, for various fittings and valves to d e te rm in e .,_ equivalent , At_ length. , .. (See T able 4.) Note 6 .-- A ll pipe should be w ell reamed and free fro m constrictions. (See Tables 6, 7 and 8.)