TESTS KENTUCKY. 
CHEMICAL ANALYSES. 
129 
Laboratory number. 
Air-drying loss 
Moisture 
Volatile matter 
Fixed carbon 
(Ash 
[Sulphur 
Hydrogen 
Carbon 
Nitrogen 
Oxygen 
Calorific value determined: 
Calories 
British thermal units.. 
Mine samples. 
2453 
5.70 
8.76 
35. 02 
46.80 
9.42 
4.07 
6,647 
11,965 
2454 
3.90 
8.75 
34. 00 
46.48 
10.77 
3.69 
Car sam- 
ple. 
2595 
3.00 
8.47 
35. 24 
46.81 
9.48 
3.60 
5.24 
65. 77 
1.2? 
14. fts 
6, 05ft 
11,986 
STEAMING TESTS. 
Test 278, Kentucky No. 
Size as shipped, standard lump. Size as used, 
over 1 inch, 26.8 per cent; £ inch to 1 inch, 24.7 per 
cent; \ inch to h inch, 20.6 per cent; under \ inch, 
27.9 percent. Duration of test, 9.60 hours. Kind 
of grate, rocking. 
Test 279, Kentucky No. 7. 
Size as shipped, standard lump. Size as used, 
over 1 inch, 36.1 percent; h inch to 1 inch, 24.1 per 
cent; \ inch to \ inch, 7.4 per cent; under \ inch, 
32.4 per cent. Duration of test, 9.22 hours. Kind 
of grate, plain. 
MISCELLANEOUS 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. . 
;i 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 do 
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 do 
Dry coal: 
Per indicated horsepower hour do 
Per electrical horsepower hour do 
Test 278. 
12, 564 
0.37 
.12 
16.95 
2.69 
75.3 
6.67 
8.01 
8.84 
10.44 
67.95 
3.53 
4.36 
3.20 
3.95 
Test 279. 
12, 505 
0.41 
.14 
1,983 
14.60 
2.44 
68.4 
6.45 
7.63 
8.38 
10.05 
64.71 
3.71 
4.58 
3.37 
4.17 
Bull. 290—06- 
