TESTS VIRGINIA . 
MISCELLANEOUS ITEMS. 
191 
Heating value of coal.. B. T. U. per pound dry coal. 
Force of draft: 
Under stack damper inch wa ter. 
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 247. 
14,443 
0.44 
.10 
2,548 
18.52 
3.71 
104.0 
8.21 
9. 76 
10.02 
10.74 
67. 00 
2. 90 
3.58 
2.82 
3.48 
Test 251. 
0.41 
.10 
2,515 
17.71 
3. 41 
95. (iO 
7.82 
9.32 
9. (15 
10. 45 
65. 24 
3.03 
3.75 
2. 93 
3. 02 
Test 25(1. , T( st 258. 
14,317 
0.44 
.15 
2,073 
is. 24 
3. 13 
87. ti 
7.(17 
9. 1(1 
9. 5(1 
10.45 
04.48 
3.09 
3.81 
2.90 
3. 05 
0. 23 
. 20 
'< 1 10. 
6.96 
8.20 
8.57 
9.45 
58. 00 
3.42 
4.23 
3.30 
4.07 
Test 260. 
14,497 
0.34 
. 13 
2,071 
is. 02 
3. 13 
87.7 
7.79 
9.35 
9.08 
10. 38 
04. 48 
3.02 
3.73 
2.92 
3.01 
«Too low for pyrometer. 
b Approximately. 
ANALYSES. 
Test 247. 
Test 251. 
Test 250. 
Test 258. 
Test 200. 
Proximate. 
2.56 
35. 34 
50.72 
5.38 
100.01 
.98 
3.37 
33. 75 
50. 41 
(1.47 
100. 00 
.82 
4.22 
33. 48 
50.11 
6. 19 
3.00 
33.50 
50.23 
0. 01 
3.34 
Volatile matter 
Fixed carbon 
Ash 
30. 14 
50.04 
4.48 
Sulphur 
100. 00 
.82 
100. 00 
.85 
100. 00 
.85 
Ultimate. 
Carbon a 
79.80 
5. 01 
7.12 
1.48 
1.01 
5. 52 
79.00 
4. 95 
7.04 
1. 40 
.85 
0.70 
79. 18 
4.90 
7.08 
1.46 
.80 
0.40 
78. 82 
4.94 
7.05 
1.45 
.88 
0.86 
80.74 
Hydrogen" 
5.05 
7.21 
Nit rogen a 
1.49 
Sulphur 
.88 
Ash 
4.03 
100. 00 
100. 00 
100. 00 
100.00 
100. 00 
a Figured from car sample. 
