TESTS VIRGINIA. 
187 
STEAMING TESTS. 
Test 281, Virginia No. 1. 
Size as shipped, run of mine. Size as used, over 
1 inch, 30 per cent; \ inch to 1 inch, 21.3 per cent; 
\ inch to \ inch, 17.5 per cent; under \ inch, 31.2 
per cent. Duration of test, 9.75 hours. Kind of 
grate, rocking. 
Test 282, Virginia No. 1. 
Size as shipped, run of mine. Size as used, over 
1 inch, 25.4 per cent; J inch to 1 inch, 21.6 per cent; 
\ inch to \ inch, 19.4 per cent; under \ inch, 33.6 
per cent. Duration of test, 9.83 hours. Kind of 
grate, rocking. 
M I SC EI .LA N H< ) U S I T EM S . 
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. . 
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 281. 
Test 282. 
14, 281 
14,198 
0.41 
0.38 
.14 
.11 
2,637 
2,542 
18.35 
IS. 57 
3. 29 
3.29 
92.2 
92.3 
7.95 
7.82 
9.54 
9.39 
10.01 
9.89 
10.78 
10.72 
67.69 
67.27 
2.96 
3.01 
3.66 
3.72 
2.82 
2.86 
3. 49 
3.53 
ANALYSES. 
Test 281. 
Test 282. 
Test 281. 
Test 282. 
Proximate. 
4.62 
33. 85 
55.92 
5.61 
5. 05 
32.82 
56.05 
6.08 
Ultimate. 
79.12 
5.03 
7.56 
1.28 
1.13 
5.88 
78.67 
Volatile matter. . . . 
Hydrogen a 
5.00 
7.50 
Ash 
Nitrogen a 
1.28 
100.00 
1.08 
100.00 
1.09 
1.15 
Sulphur 
Ash 
6.40 
100.00 
100.00 
Figured from car sample. 
