TESTS — ILLINOIS. 
75 
STEAMING TESTS. 
Test 127, Illinois No. 12. 
Size as shipped, run of mine. Size as used, over 
1 inch, 30.8 per cent; £ inch to 1 inch, 26.5 per cent; 
\ inch to \ inch, 17.1 per cent; under \ inch, 25.6 per 
cent. Duration of test, 10.03 hours. Kind of 
grate, plain. 
Test 128, IlHnois No. 12. 
Size as shipped, run of mine. Size as used, over 
1 inch, 46.4 per cent; \ inch to 1 inch, 21.2 per cent; 
£inch to \ inch, 12.3 percent; under \ inch, 20.1 per 
cent. Duration of test, 10.05 hours. Kind of 
grate, plain. 
Test 131, Illinois No. 12. 
Size as shipped, run of mine. Size as used, over 
1 inch, 23.8 per cent; \ inch to 1 inch, 18.1 p?r cent; 
\ inch to \ inch, 16.6 per cent; under \ inch, 41.5 
per cent. Duration of test, 10 hours. Kind of 
grate, rocking. 
Test 13.3, Illinois No. 12. 
Size as shipped, run of mine. Size as used, over 
1 inch, 26.4 per cent; \ inch to 1 inch, 24.3 per cent; 
J inch to \ inch, 17.9 per cent; under \ inch 31.4 per 
cent. Duration of test, 10.03 hours. Kind of 
grate, rocking. 
Test 135, Illinois No. 12, washed. 
Size as shipped, run of mine. Size as used, over 
1 inch, 22.5 per cent; \ inch to 1 inch, 28.6 per cent; 
\ inch to \ inch, 24.1 per cent; under \ inch, 24.8 per 
cent. Duration of test, 10.03 hours. Kind of 
grate, rocking. 
Test 136, Illinois No. 12. 
Size as shipped, run of mine. Size as used, over 
1 inch, 15.3 per cent; \ inch to 1 inch, 22.9 per cent; 
\ inch to \ inch, 20.8 per cent; under \ inch, 41 per 
cent. Duration of test, 9.68 hours. Kind of 
grate, rocking. 
M I SC ELLA N EO U S ITEMS . 
Heating value of coal, B. T. U. per pound 
dry coal 
Force of draft: 
Under stack damper inch water. 
Above fire do — 
Furnace temperature °F. . 
Dry coal used per square foot of grate 
surface per hour pounds. . 
Equivalent water evaporated per square 
foot of water-heating surface per hour, 
pounds 
Percentage of rated horsepower of boiler 
developed 
Water apparently evaporated per pound 
of coal, as fired pounds.. 
Water evaporated from and at 212 ° F.: 
Per pound of coal as fired, .pounds. . 
Per pound of dry coal do 
Per pound of combustible do 
Efficiency of boiler, including grate, per 
cent 
Coal as fired: 
Per indicated horsepower hour, 
pounds 
Per electrical horsepower hour, 
pounds 
Dry coal: 
Per indicated horsepower hour, 
pounds 
Per electrical 
pounds 
horsepower hour, 
Test 127. 
11,963 
0.59 
.19 
Test 128. 
21.49 
3.35 
94.00 
6.17 
7.15 
7.81 
9.60 
63.04 
3.96 
4.88 
3.50 
4.50 
12. 154 
0.46 
.19 
21.45 
3.51 
98.3 
6.45 
7.54 
8.19 
9.84 
65.07 
3.75 
4.63 
3.45 
4.26 
Test 131. 
11,709 
0.57 
.19 
20.87 
2.91 
81.5 
6. 06 
7.04 
7.77 
10.19 
64.08 
4.02 
4.96 
3.64 
4.49 
Test 133. i Test 135. 
11,849 13,104 
0.65 
.22 
22.91 
3.15 
88.20 
5.99 
7.00 
7.67 
9.73 
62. 51 
4.04 
4.99 
3.69 
4.55 
0.03 
.18 
23.09 
3.62 
101.3 
6.69 
7.86 
8.75 
9.99 
64.48 
3.60 
4.44 
3.23 
3.99 
Test 136. 
11,867 
0.07 
.21 
20.77 
2.91 
81.5 
6. 00 
7.00 
7.81 
4.04 
4.99 
3.62 
4.47 
