110 PKELIMINARY REPOET ON COAL-TESTING PLANT. 
Horsepower developed. 
Average electrical horsepower available for outside purposes 
Average electrical horsepower developed at switchboard 
Average brake horsepower t available for outside purposes 
Average brake horsepower! developed at engine 
Coal consumed in producer, pounds per horsepower per hour. 
[BULL. 261 
190.1 
200.4 
223.8 
235.5 
Coal as 
fired. 
Dry coal. 
Combus- 
tible. 
Per electrical horsepower available for outside purposes. . 
1.51 
1.49 
1.4 
Per electrical horsepower developed at switch board 
1.43 
1.41 
1.3 
Per brake horsepower! available for outside purposes 
1.29 
1.27 
1.1 
Per brake horsepower f developed at engine 
1.22 
1.20 
1.1 
Equivalent pounds used by producer plant per electrical 
horsepower available for outside purposes 
1.69 
1.66 
1.5 
Equivalent pounds used by producer plant per electrical 
horsepower developed at switch board 
1.60 
1.57 
1.4 
Equivalent pounds used by producer plant per brake 
horsepower t available for outside purposes 
J. 43 
1.41 
1.3 
Equivalent pounds used by producer plant per brake 
horsepower fdeveloped at engine 
1.36 
1.34 
1.2 
Average composition of coal and gas. 
coal. Per cent. 
Moisture 1. 61 
Volatile matter 36. 85 
Fixed carbon 55. 40 
Ash 6.14 
Sulphur 
.87 
gas by volume. Per cen 
Carbon dioxide 10. 51 
Oxygen II 
Carbon monoxide 14. 3j 
Hydrogen 2. 8! 
Methane 5. 51 
Nitrogen 66. d 
100.01 
Previous to starting the test on this coal the tar extractor was remove* 
and a new one substituted. As it was necessary to take the produce 
operator from his work to assist in placing the new extractor, the pre 
ducer did not receive an}^ attention for a few days and was in bad cor 
dition when the test was started. It was thought best to see if th 
producer could be made to carry full load and build up its bed inti 
good running condition at the same time. The load was carried ami 
the producer was in good shape for the official test six hours afte : 
being put into operation. 
As the coal contained about 50 per cent slack, the producer was ru 
with a hot bed, in order to coke the coal quickly after it fell on tl 
fire. It made a good top coke, which was readily handled. The fi] f 
was easily managed and the coal may be considered an excellent f u A 
for producers. 
+ Based on an assumed efficiency of 85 per cent for generator and belt. 
