L'ESTS INDIANA. 
109 
CHEMICAL ANALYSES. 
Mine samples. 
Car 
sample. 
hi 
Ai 
boratory number 
1S2S 
7.40 
10.68 
37. 17 
39.91 
12.24 
4.38 
1829 
8.00 
11.13 
36.86 
41. SO 
10.21 
3.76 
I 
36 19 
fa 
'y. 
o 
J-H 
43 65 
(Ash 
10 61 
Ph 
3 72 
c3 
a 
5.49 
04. OS 
1.08 
t> 
15.02 
Ca 
6,256 
11,261 
0,533 
1 1 , 750 
STEAMING TESTS. 
Test 183, Indiana No. 8. 
Size as shipped, lump. Size as used, >ver l inch, 
30.5 percent; \ inch to 1 inch, 23.1 percent; \ inch 
to I inch, 16.7 per cent; under ; inch J9.7 per cent. 
Duration of test, 9.98 hours. Kind of grate, 
plain. 
Test 183, Indiana No. 8. 
Size as shipped, lump. Size as used, over 1 inch, 
39.5 per cent; \ inch to 1 inch, 23.3 per cent; ', inch 
to I inch, 13.4 percent; under \ inch, 23.8 per cent. 
Duration of test, 10 hours. Kind of grate, plain. 
Test 185, Indiana No. 8. 
Size as shipped, lump. Size as used, over 1 inch, 
27.7 per cent; \ inch to 1 inch, 21.4 per cent; ', inch 
to h inch, 17.2 per cent; under \ inch, 33.7 per cent. 
Duration of test, 10 hours. Kind of grate, plain. 
Test 184, Indiana No. 8, washed. 
Size as shipped, lump. Size as used, over 1 inch, 
20.1 percent; | inch to 1 inch, 29.9 percent; \ inch 
to | inch, 24.3 per cent, under ', inch, 25.7 per cent. 
Duration of test, 10 hours. Kind of grate, 
plain. 
[ISCELLANEOUS [TEMS. 
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-heat- 
ing 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 pou nds. 
Per pound of dry coal do — 
J Per pound of combustible do — 
Efficiency of boiler, including grate per cent. 
JCoal 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 L82. Test 183. Test 185. Test 184 
12,838 12,587 
0.49 | 
2,384 
19.78 
3.22 i 
90.2 ! 
6.34 
7.38 
8. 15 
9.52 
61.31 
3.83 
4.73 
3.47 
4.28 
0.41 
.13 
2,279 
17.24 
2.SS 
SO. 7 
6.43 
8.36 
9.85 
64.14 
3.78 
4.07 
3.38 
4.18 
0.51 
.16 
2,304 
19.63 
3. is 
80.0 
6.24 
7.28 
8.10 
9.63 
61.97 
3.89 
4.80 
3. 49 
4.31 
0.43 
.10 
2,354 
19. 78 
3.40 
97.0 
( . <A 
8.76 
9.94 
04.02 
3.66 
4.52 
3.23 
3.00 
