Document G61MVB4Oz7RY132aVweKGvDn4

370 - CHAPTER 17 1949 Guide Automatic Fuel Burning Equipment 37J, GROSS OUTPUT - HUNDRED FEET WATER RAQIATION Fig. 21. Coal Fuel Burning Rate Chart . ,o o II Z. 4\ , i'i 6 i---------r 8 t -i 10 ' i" vt---------1-- l -- | 12 K 16 GROSS OUTPUT - HUNDRED FEET.STEAM RAQIATION 5 r_' r~S_n ' ' IS-1 ' 1 * * 201 ' 25 GROSS OUTPUT' HUNQREf) FEET WATER RAQIATION , Fig. 22. Oil Fuel Burning Rate Chart4 4 This chart is based upon No. 3 oil having a heat oonteht of 143,400 Btu per gallon.' If other grades of -oil are used multiply the value obtained from this chart by the following factors: No. 1 oil (139,000 Btu per gallon) 1:032; No. 2 oil (141,000 Btu per gallon) 1.017; No. 4 oil.(144.500 Btu per gallon) 0.692; No. 5 oil (146,000 Btu per gallon) 0.982; and No. 6 oil (150,000 Btu per gallon) 0.956. Fig: 23. Gas Fuel Burning Rate Chart The correct fuel burning rate can be determined directly from the several charts for oil or gas burning installations, as these customarily operate on a strictly intermittent basis. These fuel burning devices usually introduce the fuel at a single fixed rate during the on periods and this rate should be sufficient to carry the gross load. In the case of coal stokers, which are usually capable of variable rates of firing, it is desirable to operate at as low a rate as weather conditions will permit, but the maxi mum firing rate of the stroker should be sufficient to carry the gross load. This rate may be determined by the same method as used for oil or gas. REFERENCES 1 Domestic Burners for Pennsylvania Anthracite (Underfeed Type), (U. S. Depart ment 0} Commerce, National Bureau ofStandards, Commercial Standard No. CS48-40). 1 Stoker Manufacturers Association Manual: Industry Standards, Recommended Practices, Technical Information. Published by Stoker Manufacturers Association, 307 N. Michigan Ave., Chicago 1, 111. * Code for Determination of Rated Capacities df Anthracite Underfeed Stokers,' adopted June 1,1944, and a Code for Determination of Rated Capacities of Bitumi nous Underfeed Strokers, adopted May 3,1944. See Stroker Manufacturers Associa tion Manual. - Auiuuiauc iviecnamcai urart uil .Burners Designed for Domestic Installations (U. S. Department of Commerce, National Bureau of Standards, Commercial Standard No. CS75-42). Flue Connected Oil Burning Space Heaters Equipped with Vaporiz ing Pot Type Burners (IJ. S. Department of Commerce, National Bureau of Standards, Commercial Standard No. CS101-43). Warm-Air Furnaces Equipped with Vaporiz ing Pot-Type Oil Burners (U. S. Department of Commerce, National Bureau of Stand ards, Commercial Standard No. CS(E)104-43). Oil-Burning Floor Furnaces equip ped with Vaporizing Pot-Type Burners (U. S. Department of Commerce, National Bureau of Standards, Commercial Standard C- S. 113-44).