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Full text of "The Flow Of Gases In Furnaces"

230

APPENDIX VII


	Heat Required for
		Heat
 Available Products Combust
	
	Gas
	Air
	Gas Checker
	Cl
 Y*
 66
 1C
 12
 .99 .01 12
 e
 8

For gas: 228.5X2 ...........
	457
	1093.2
 0.2 70.52
	1071 23
 697.5
	
For air:   546.6X2 .................
				
Available in products of combustion . . Total required and available ......
	155 29.48
			
Per cent of total required ............
				
Heat available required for the gas checker = 2366X29 48   ..
				
Heat  available  required  for the air checker =2366X70.52 ............
	
	
		
Volume of products of combustion required for gas checker, 697. 5 -4- 1071, per cent .........................
	
	
	65.13
	
Volume of products of combustion required for air checker, 1668 . 5 -r 1295 per cent .........................
	
	
		
Total per cent waste gases ...........
	
	
	193
 6 67.00 33.50 359 0.9*
	
Correction to make 200 per cent ......
	
	
		
Corrected per cent values ............
	
	
		
Reducing these to a 100 per cent basis Calories per cubic meter of gas burned Volumes per cubic meter of gas burned
	228.5 1.00
	546.6
 1.87
		
*2.68 volumesX0.335 and 2.68X0.665.
The surplus heat over that required for the preheating o
gas and air will be
For the gas checker: 359-228.5 = 130.5 calories
For the air checker:  861  546.6=314.4 calories
This surplus supplies the heat lost by radiation, condu<
and convection from the checker or regenerator chamber
should these losses be not sufficient to absorb this amount of
the final temperature of the products of combustion leaving
checkers will automatically increase until the heat carried
into the furnace by the air and gas plus these losses equals