64 
OPERATIONS OF FUEL-TESTING PLANT IN 1905. 
MISCELLANEOUS ITEMS. 
Test 103. 
Test 104. 
Test 105. 
Test 113. 
Test 121. 
Heating value of coal. . B. T. U. per pound dry coal . 
12,506 
12, 483 
12, 555 
12.947 
12,438 
Force of draft: 
Under stack damper. inch water.. 
0.56 
0.37 
0.66 
0.50 
0.59 
Above fire do 
.27 
.19 
.25 
.20 
.19 
Furnace temperature °F.. 
Dry coal used per square foot of grate surface per 
hour pounds.. 
2,218 
2,155 
23.22 
2,220 
26.53 
30. 26 
25.60 
26. 60 
Equivalent water evaporated per square foot of 
water-heating surface per hour pounds. . 
3.61 
3.01 
4.08 
3. 05 
3.57 
Percentage of rated horsepower of boiler developed. 
101.1 
84.4 
114.3 
85.6 
100.0 
Water apparently evaporated per pound of coal as 
fired pounds. . 
5.06 
4.85 
4.99 
4.84 
5.72 
Water evaporated from and at 212° F.: « 
Per pound of coal as fired do 
5.94 
5. 70 
5.93 
5.68 
6.69 
Per pound of dry coal do 
6.81 
6.50 
6.75 
6.66 
7.49 
Per pound of combustible do 
7.87 
7.63 
7.79 
7.50 
8.83 
Efficiency of boiler, including grate per cent. . 
52.59 
50.28 
51.92 
49.67 
58.15 
Coal as fired: 
Per indicated horsepower hour pounds. . 
4.76 
4.96 
4.77 
4.98 
4.23 
Per electrical horsepower hour do 
5.88 
6. 12 
5. 89 
6.15 
5. 22 
Dry coal: 
Per indicated horsepower hour do 
4.15 
4.35 
4.19 
4.25 
3.77 
Per electrical horsepower hour do 
5.13 
5.37 
5.17 
5.24 
4.66 
a A better evaporation would have been obtained if boilers and gas-sampling apparatus had been 
In better condition, as they were later. 
ANALYSES. 
Test 103. 
Test 104. 
Test 105. 
Test 113. 
Test 121. 
Proximate 
Moisture 
Volatile matter 
Fixed carbon 
Ash 
Sulphur 
Ultimate. 
Carbon a 
Hydrogen a 
Oxygen a 
Nitrogen a 
Sulphur 
Ash 
12.76 
36.12 
40.78 
10.34 
100.00 
3.94 
68. 45 
4.92 
9.16 
1.10 
4.52 
11.85 
100.00 
12.21 
36.38 
40.27 
11.14 
12.10 
36.23 
41.05 
10. 62 
14. 66 
36. 71 
41.19 
7.44 
100.00 
3.89 
100.00 
4.08 
100.00 
3.34 
67. 83 
4.88 
9.08 
1.09 
4.43 
12.69 
68.17 
4.89 
9.13 
1.10 
4. 64 
12.07 
100.00 
100. 00 
71.54 
5.13 
9.55 
1.15 
3.91 
8.72 
100.00 
10.70 
35. 84 
41.82 
11.64 
100. 00 
4.11 
67. 42 
4.83 
8.99 
1.12 
4.60 
13.04 
100.00 
a Figured from car sample. 
