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DESIGN  OF OPEN-HEARTH FURNACES

'   251

dumber of Furnaces of Each Size
1112121        12

311

xuu 180 170 160 150
 -s140
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10      20      30      40      50      60     70       80     90     100     150    200
Tons, Nominal Capacity of Furnace

FIG. 162.—Graphical Comparison of Chimney Heights of Various Open-hearth

Furnaces,

Number of Furnaces of Each Size
1112222      14      4          11              4       1       1

50

"30

20

1Q

10    20    30     40     50     60    70     80    90    100   150   200
Tons, Nominal Capacity of Furnace
FIG. 163.—Graphical Comparison of Chimney Areas of Various Open-hearth
Furnaces.