Document p2mXRm5Exk5Vjax746bxeZLRE

356 CHAPTER 15 1950 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.' 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 SBITable 1. Net Rating Data fob Residential Steel Boilebs--Oil Fibed* Sq Ft Steam 275 320 400 550 700 900 1100 SBI Net Ratotg Sq Ft Water 440 510 640 880 1120 1440 1760 Btu 66000 77000 96000 132000 168000 216000 264000 Minimum Furnace Volume Cu Ft N 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 2080 .2400 2880 312000 360000 432000 11.8 13.6 16.4 77 88 106 2200 2600 3000 3520 4160 4800 528000 624000 720000 20.0 23.6 27.3 129 153 177 . . * Stoker-fired and Gao-fired SBI Net Rating not greater Oil-fired. Hand-fired, 8B1 Net Rating' (Steam) not greater than 14 tima the square feet of heating turfaoe. Beating Boilers, Pomaces, Space Heaters 357 -Ha lls- C8CflOOm.. mu CO c*3 ^ ^NO'O'O 2 O * oo oo oo oo oooooo eoooo 0.vr>. n-** rf j c-i *} r-i r-^ 222 28S S88 3R55 T a b l e 2. SBI R atings tor Com m ercial Ste e l B oilers Sot*y-* *eto-s* - 888 881 T_T Ntqr'j ^m*"- S' jjeoer- ro-ro Si 888' 888 888g 1 0^c>,r/^ jtI r* oo to 88 | 3-S3- f8" 8[3% Si 222" 8'38 S3S38 i8 >i I2 11 & . 21" %%% L! 222 8888 3 I Sgm33 cn it. iir ii|l* ass 525 O' oo po t,2o owo moo *c--vir)*o<o3 p-io' <T) co ** oO^ S2 ? S jo <S38 C22?2S ssa asfils all Iss Ills t--es o_o oooooo to rs co "T:3 8 sis 83s? sss 2" ro erf1'* !1 S I l 3 1 ii 1 si VmO* t^ToooC =22 g? 58SS8 mII in. ill ^-TfS C*i CO ro 2 2^^ 2c *3 M <Sa \<nocoo*oo.... *QS? *oof<5 sp 8oo8^P3ir-^8r^ Pi CSC? C0***0 t/JrCad n III. si 8So 8pi8 rO^Ti/) oo 8oo8p^ to b* r8-^8t^'8O OO'JU' f-fo'oC 88 sa'af 8oo8m8ts8O cpooodoo ?ah s .g lit, -- * PiPifO .PetO ^8 tO'f>T 888 111 1 8$ Vo'Cc O A H"