242 



Table 86S. 



HEAT VALUES AND ANALYSES OF VARIOUS TYPES OF FUEL- 



(a) Coals. 



(b) Peats and Wood (air dried). 



Franklin Co., N. Y. 

 Sawyer Co., Wis. . . 

 Woods: 



Oak, dry 



Birch, dry 



Pine, dry 



B.T.U.'s 



per \ 

 pound. , 



10307 

 8761 



8316 

 8588 

 9153 



(c) LiQXJiD Fuels. 



Fud. 



Petroleum ether 



Gasoline 



Kerosene 



Fuel oils, heavy petroleum or refinery residue 



Alcohol, fuel or denatured with 7 to 9 per 



cent water and denaturing material 



Specific gravity 

 at 15° C. 



.684-. 694 

 .710-. 730 

 .790-. 800 

 .960-. 970 



.8196-. 8202 



Calories per gram. 



12210-12220 

 11100-H400 

 11000-11200 

 10200-10500 



6440-6470 



British thermal units 

 per pound. 



2197S-21996 

 19980-20520 

 19800-20160 

 18360-18900 



11592-11646 



((f) Gases. 



Gas. 



Natural gas, Cal 



Natural gas, Pa 



Natural gas, France. . 

 Coal gas, low grade . . 

 Coal gas, high grade. . 

 Water gas, low grade. 

 Water gas, high grade 



B.T.I 



per 



cu. ft 



937 



142c 

 105: 



6s; 

 39? 

 28; 

 65; 



• CtHe. Data from the Geological Survey, Poole's The Calorific Power of Fuels, and for natural gas from Snel i 

 (Van Nostrand's Chemical Annual), 



Smithsonian Tables. 



