The Flow Of Gases In Furnaces

DESIGN OF HOT-BLAST STOVES

313

TABLE 4

DATA ABSTRACTED FROM "BLAST FURNACE ADVANCEMENT/' BY A. E.
MACCOUN, PRESENTED BEFORE THE AMERICAN IRON AND STEEL INSTI-
TUTE MEETING OP MAY 28, 1915

Test of a 22' 0"X 100' 0"—Two-pass Cowper Hot-blast Stove

Heatin0* surface of checkers .
51 192 ft2
4764 m2

Total of stove ...........
55 866 ft2
5202 m2

Combustion chamber, area .......... . . . .
40 8 ft2
3 m2 79

Height to burner ..........................
10 62 ft
3 m 50

Above burner ............................
76 75 ft
23 m 10

Total ....
87 38 ft
26 m 60

Volume, below burner ...
468 ft3
13 m3 26

Above burner .............. . .
3092 ft3
87 m3 54

Total .........................
3560 ft3
100 m3 80

Dome volume
1381 ft3
39 m3 10

Checker Number of passes
329

Dimensions of passes. ...
6"X6"
150X 150 mm

Total area of passes .........
82 25 ft2
7 m2 64

Perimeter of one pass ....................
2 0 ft
0 m 60

329 passes
658 ft
197 m 40

Height of .....
77 75 ft
24 m 00

Heating surface = 197 . 40X 24 . 0 = .............
51.160 ft2
4738 m2

(Difference due to use of approximate metric value)

Wall thickness ................................
0 25 ft
75 mm

Area per pass = (150X75)2 =

0 m2 050625

Of pass = 1502.

0 m2 02250

Brickwork per pass (difference) . . ......

0 m2 028125

Percentage of in brick (Table 3) .............

55 56

In pass (Table 3)

44 44

Total Checker = 0 050625X329 =

16 m2 655

Passes = 0 . 022500X329 = .............

7 m2 403

(Difference due to use of approximate metric value?)

Brick = 16 655-7.403= ................

9 m2 252

Volume, Total brick and passes 16.655X24= .....

400 m3 30

Passes = 7 403X24 =

177 m3 64

Brick ......................................

222 m3 66

(Difference due to use of approximate metric value)

Weight (as given) 251.85X1800 =.
(metric) 222.66 X1800 = .

453,350 kg
400,800 kg