172 CALORIFIC POWER OF FUELS. 



Then as the heat of combustion is 747.66 by volume or 

 874.6 by weight, we have for combustion in oxygen, 



?Zi^ = 2350 c., 



0.125 X 0.479 + 0.588 X 0.217+0.747 X 0.244 

 and for combustion in air, 



874.6 

 LZ -_ 1 1 12 C 



0.125 X 0.479 + 0.588 X 0.217+ 1.717 X 0.244 



5. Petroleum Oil. The oil may be assumed to contain 



Carbon 85 per cent. 



Hydrogen 15 " " 



100 



C 0.85 produces 3-H7 CO, and 7.588 N 



Ho.i5 " 1.35 H a O " " 4.017" 



1.35 H a O 1.117 CO 2 11.605 N 



The heat of combustion may be assumed at 10000 calories. 

 Then for combustion in oxygen, 



10000 



1.35 X 0.479+ 3-H7 X 0.217 

 and for combustion in air, 



i oooo 

 1.35 X 0.479+3.117 X 0.217+ 11.605 X 0.244 



= 2400 C. 



Other oils or solid fuels may be calculated according to 

 this model. 



At the end of the volume are given a few of those fuels 

 most commonly used with the theoretical oxygen and air 

 flame temperatures. 



