(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Biodiversity Heritage Library | Children's Library | Additional Collections
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "The Flow Of Gases In Furnaces"

264

APPENDIX VII

TABLE 16—Continued


	Gas on Gas
	Air on Air
	Gas on Waste Gas
	Air on WasfceGas

The   volume   occupied    by    the checker brick will be = weight
 Xy-gVo~:
 15-minute cycle = . . .
	
	
	56 m3 86 75 m3 82 94 m3 78
 5m3 19 1200° 5.4040 28 m3 05 -S00°
 4.00
	100 m3 90 133 m3 94 157 m3 38
 7m3 58 1100° 5.0370 38 m3 18 -1000°
 5.00

20-minute cyclic ==....
	
	
		
25~minute cycle = . . . .
	
	
		
Pass volume in choekerwork : Qn of gan, air, waste gases .
	5m3 32 850° 4.1195 21 m3 92 +700°
 3.50 76 m3 72
	8m3 51 750° 3.7525 31 m3 93 -1-900°
 4.50 143 m3 68
		
t° average in checker. . . .
				
1-Kd for average /° ...........
 QoX(l +<*/) = ........
				
Temperature change. .
				
Average; lim ! in checker seconds, 200° per second change in L . . Basing pass volume on gas and air heating time, the pass volume = Average time in checkers of waste ga,seH, revised to pass volume, seconds ..........
				
			2.735
 4775 cu ft 5372 cu ft 6040 cu ft
	3.763
 8613 cu ft 9778 cu ft 10600 cu ft

Total checker volume: 15-minute cycle ........
	133 m3 58 152 m3 54 171 m3 50
 42.57 57.43 49.70 50.29 55.26 44.74
 0.6689
	244 m3 58 277 m3 62 301m 3 06
 41.26 58.74 48.25 51.75 52.28 47.72
		
20-ininute cycle. . ........
				
25-mirmte cycle ...........
				
Percentage of Hpaec occupied by Brick, lf)-miuute cycle ........ PasB ..................      .   .
				
			
	

Brick, 2Q-tninute cycle ........
			
	

Pass ........................
			
	

Brick, 25~minuto cycle ........
			
	

Pans ...... ... ...............
			
	

In order to provide a margin for all possible  contingencies,   the 25 minute, cycle will bo used lining square paHHCH, the diameter of unit piiHH = \/() 4474 ~ ......
			
	

= v'o "4772 = ......
		0.6808
	
	

Brick = 1 0000 — 0 0080= .......
	0.3311
		
	

1  000') — 0 0808= .......
		0.3192
 7. 5 in. 2. 5 in 5.0 in
	
	

Make both alike tmHedongas, using a 2.f> in. (f».'J mm.) briek: Dim<insion of unit  pass = 63-=-
0   ,'W = h =r                                  ........
	190mm 63mm 127mm
		
	

Brick thiekncKH    , . . . .........
			
	

Diameter square pa«B .........