112 PRELIMINARY REPORT ON COAL-TESTING PLANT, [bull. 261. 
Coal consumed in producer, pounds per horsepower per hour. 
Coal as 
fired. 
Dry coal. 
Combus- 
tible. 
Per electrical horsepower available for outside purposes. . 
1.23 
1.21 
1.10 
Per electrical horsepower developed at switch board 
1.17 
1.15 
1.04 
Per brake horsepower t available for outside purposes . . . 
1.0-5 
1.03 
.935 
Per brake horsepower f developed at engine 
.992 
.975 
.8$ 
Equivalent pounds used by producer plant per electrical 
horsepower available for outside purposes 
1.39 
1.36 
1.24 
Equivalent pounds used by producer plant per electrical 
horsepower developed at switch board 
1.32 
1.29 
1.17 
Equivalent pounds used by producer plant per brake 
horsepower | available for outside purposes 
1.18 
1.16 
1.05 
Equivalent pounds used by producer plant per brake 
horsepower! developed at engine 
1.12 
1.10 
.991 
t Based on an assumed efficiency of 85 per cent for generator and belt. 
Average composition of coal and gas. 
gas by volume. Per cenl 
Carbon dioxide 10. 1( 
Oxygen % 
Carbon monoxide 15. 8 
Hydrogen 11. II 
Methane 3.1 
Nitrogen 58. 81 
coal. Per cent. 
Moisture 1. 99 
Volatile matter 28. 89 
Fixed carbon 60. 30 
Ash 8.82 
Sulphur 79 
100. (X 
The West Virginia No. 4 coal is soft and friable, reaching- the pro 
ducer mainly as slack. It coked well on top of the bed and was 
readily worked. It promised to give the largest yield of gas of all th( 
coals used thus far. Owing to the small supply of coal available tin 
test was necessarily of short duration, but enough was done to shoT 
that it is an excellent gas-producer coal. 
COAL, WEST VIRGINIA NO. 9, PRODUCER-GAS TEST NO. 17. 
[Coal from Vulcan mine of the Mount Carbon Coal Company (Limited), Powellton, W. Va.;t( 
December, 19, 1901.] 
Duration of test hours. . 
Total coal consumed in producer pounds. . 
Moisture in coal per cent. . 
Dry coal consumed in producer pounds. . 
Refuse from dry coal per cent. . 
Total refuse from coal pounds. . 
Total combustible consumed in producer pounds. . 
Coal consumed, pounds per hour. 
Coal consumed in producer 
Dry coal consumed in producer 
Combustible consumed in producer 
Equivalent coal used by producer plant 
Equivalent dry coal used by producer plant 
Equivalent combustible used by producer plant 
6.: 
1,900 I 
2. 
1, 848 J 
5.1 
108.1 
1,739.| 
300 
292 
274. 
328. ] 
320. ! 
301. 
