Document pBNkpQdd3Bra4pbj41xYg4zxw

370 CHAPTER 15 1951 Guide considered consistent with good practice, although there are boilers which have high efficiencies and also operate at higher transmission rates. TESTING AND RATING CODES The Society has adopted four solid fuel testing codes, a solid fuel rating code, and an oil fuel testing code. ASHVE Standard and Short Form Heat Balance Codes for Testing Low-Pressure Steam Heating Solid Fuel Boilers--Codes 1 and 2--(Re vision of June, 1929),1 are intended to provide a method for conducting and reporting tests to determine heat efficiency and performance char acteristics. ASHVE Performance Test Code for Steam Heating Solid Fuel Boilers --Code No. 3--(Edition of 1929)1 is intended for use with ASHVE Code for Rating Steam Heating Solid Fuel Hand-Fired Boilers.4 The object of this test code is to specify the tests to be conducted, and to provide a method for conducting and reporting tests to determine the efficiencies and performance of the boiler. The ASHVE Standard Code for Testing Steam Heating Boilers Burning Oil Fuel,' (Adopted June, 1932), is intended to provide a standard method for conducting and reporting tests to determine the heating efficiency and performance characteristics when oil fuel is used with steam heating boilers. The ASHVE Standard Code for Testing Stoker-Fired Steam Heating Boilers,4 (Adopted June, 1938), is intended to provide a test method for determining the efficiency and performance characteristics of any stoker and boiler combination burning any type of solid, fuel, such as anthracite or bituminous coal. The Steel Boiler Institute, Inc. has adopted a Rating Code for Com mercial Steel Boilers and Residential Steel Boilers, and for Testing OilFired Residential Steel Boilers (Fifth Edition as Revised Jan. 1, 1948). The commerical boilers (defined as those having 129 to 2500 sq ft of heating Table 1. SBI Net Rating Data fob Residential Steel Boilebs--Oil Fired" * Sq Ft Steam 275 320 400 550 - 700 9Q0 1100 SBI Net Rating , Sq Ft Water 440 510 640 880 1120 1440 1760 Btn 66000 ' 77000 96000 132000 168000 216000 264000 Minimam Furnace Volume Cu Ft 2.5 2.9 3.6 5.0 6.4 8.2 10.0 Heating Surface Sq Ft 16 19 24 32 41 53 65 1300 1500 1800 2200 2600 3000 2080 2400 2880 3520 4160 4800 312000 360000 432000 528000 624000 ' 720000 11.8 13.6 16.4 20.0 23.6 27.3 ... 77 88 106 129 153 ' 177. * Stoker-fired and Gas-fired SBI Net Batins not greater than Oil-fired. Hand-fired; SBI Net Bating (Steam) not greater.than 14 times the square feet of heating surfaoe. ;v>>\ Heating Boilers, Furnaces, Space Heaters Steam Outlet , I.P.S.I d. 0 0Isg0- *' n2 iifsj r*5 t+) ro t*> f*5 m Tf T}i \ O VO - 'O'OO 'O'O'O 'OOOO oo oc oo oooooo OOOO O' O' f-- tOTTes Tf IO 00 O' cu 'O oocOuccuu iCrUicCUoCoO 371 16,700 2.500.000 20,000 3,000.000 23,330 3.500.000 1.400.000 1.700.000 2,000,000 6,000 900,000 6,670 1,000,000 8,000 1,200,000 600,000 700.000 800.000 360.000 439.000 521.000 Btu T a b l e 2. SBI R a tin g s for C o m m er c ial St e e l B o iler s tao P0S 5 oH [*S4 g` s e I CO . 8q Ft Water . Btu Sq Ft Steam Sq Ft Water 2,880 3,520 4,160 432.000 528.000 624.000 1,500 2,400 1.830 2,930 2,170 3,470 4,800 5,600 6,400 . 7,200 8,000 9,600 11,200 1,680,000 13,600 2.040.000 16,000 2.400.000 20,000 3,000,000 10,420 24.000 3.600.000 12,500 28.000 4.200.000 14,580 1,080,000 1,200,000 1,440,000 2,500 2,920 3,330 3,750 4,170 5,000 4,000 4,670 5,330 111 tHQOOl OtotOocOo oT--T toooo oooootpoo wfe-'ao 4.800.000 6,000,000 7.200.000 81400.000 16,670 20,830 25,000 29,170 26.670 33,330 40,000 46.670 >cV - ---' O "2 f a1 32.000 40.000 48.000 56.000 12.500 15,000 17.500 7,000 8,500 10,000 3,000 3,500 4,000 4,500 5.000 6.000 1,800 2,200 2,600 8q Ft Steam 5.830.000 7.286.000 8.743.000 10,200,000 3.643.000 12.500 4.373.000 15,000 5.100.000 17.500 8,500 13,600 2.040.000 7,000 11,200 1,680,000 60.8 10,330 16,520 2.479.000 8,500 13,600 2.040.000 73.8 12,150 19,440 2.916.000 10,000 16.000 2.400.000 86.8 5,470 8,750 1.313.000 4,500 7,200 1,080,000 39.1 6,080 9,720 1.459.000 5.000 8,000 1,200,000 43.5 7,290 11,660 1.750.000 6.000 9,600 1,440,000 52.1 Heating . Mini Surface mum Sq Ft U2*3 a s 1 s l* 3 a 5f aa5 5 3 5 Z<s ll: H 1,800 ' 2,880 2,200 3,520 2,600 4,160 OMIOCOOoO *C--U0C0UooC0oU. MrtCuOiroOCcO'u}'l SS2 cduioCU'dto'Cof) QcooitrCluu^lOcOu,. Xxx N'OMOOtOS' .cOu'.toto XXX CJ -- ccuo XX x CO CO CO O r*> O XXX 338$ r-. eu\q w^'oo CU dCU oroefO. 108.5 130.2 151.8 720.000 840.000 960.000 432.000 528.000 624.000 ill 'cu 173.5 216.9 260.3 303 6 4.800.000 6,000,000 7.200.000 8.400.000 32.000 40.000 48.000 56.000 4,800 5,600 6,400 3.000 3,500 4.000 " couVcuwcu cTif-TcTio CUCUtOPO. 1,429 1,786 2,143 2,500 g X 2 *0 <a * 1 3? 5"! *8 a g5` 8 e .2 23 13 1 !!' T 3 876,000 1,020,000 1,166,000 526.000 643.000 758.000 2,190 3,500 2,680 4,280 3,160 5,050 s a 5 & 0 1 ->0 eu OO 5,840 . 6,800 7,770 38,860 48,570 58,280 68,000 8 <3 JJ S Is-s3S- " JO a ha n 9- 311' obH' X 15,180 24,280 18,220 29,150 21,250 34,000 24,290 30,360 36,430 42,500