102 
PRELIMINARY REPORT ON COAL-TESTING PLANT, [bull. 201 
Horsepower developed. 
Average electrical horsepower available for outside purposes 
Average electrical horsepower developed at switch board 
Average brake horsepower f available for outside purposes . . 
Average brake horsepower t developed at engine 
185. 7 
198.6 
218.5 
233.5 
Coal consumed in producer, pounds per horsepower per hour. 
Coal as 
fired. 
Dry coal. 
Combus 
tible. 
Per electrical horsepower available for outside purposes. . 
Per electrical horsepower developed at switch board 
Per brake horsepower t available for outside purposes 
Per brake horsepower f developed at engine 
1.87 
1.74 
1.59 
1.48 
2.07 
1.94 
1.76 
1.65 
1. 65 
1.54 
1.40 
1.31 
1.83 
1.71 
1.55 
1.45 
1.3 
1.2 
1.1 
1.0 
Equivalent pounds used by producer plant per electrical 
horsepower available for outside purposes 
Equivalent pounds used by producer plant per electrical 
horsepower developed at switch board 
1.5 
1.4 
Equivalent pounds used by producer plant per brake 
horsepower f available for outside purposes 
1.3 
Equivalent pounds used by producer plant per brake 
horsepower t developed at engine 
1.2 
Average composition of coal and gas. 
coal. Per cent. 
Moisture 1 1 . 60 
Volatile matter 35. 28 
Fixed carbon 38. 28 
Ash 14.84 
Sulphur 4. 56 
gas by volume. Per cent 
Carbon dioxide 12. 
Oxygen 2( 
Carbon monoxide 10. 5j 
Hydrogen 7. 61 
Methane 6. 3 
Nitrogen 63. 21 
99. 9* 
In using Missouri No. 2 coal some difficulty was experienced ii 
keeping the bed in good condition, owing to its tendency to breafl 
open in spots. The high percentage of sulphur in the coal did no 
add to its value as a producer fuel, but the writer's opinion is that i] 
can be used to advantage in producers by increasing the facilities foj 
purifying. 
COAL, MONTANA NO. 1; PRODUCER-GAS TEST NO. 5.* 
[Coal from mine near Red Lodge, Mont.; tested October 24-25, 1904.] 
Duration of test hours. . 
Total coal consumed in producer pounds . . 10, 
Moisture in coal per cent. . 
Dry coal consumed in producer pounds. . 9, 
Refuse from dry coal per cent. . 
Total refuse from coal pounds. . 1, 
Total combustible consumed in producer do 7, 
22.33 
200 
11.4 
037 
12.1| 
095 
942 
* Gas-producer hopper leaked. 
f Based on an assumed efficiency of 85 per cent for generator and belt. 
