111
Efficiency of boilers, chart of 258
Combustible basis 256
Dry coal basis 256
Increase in, due to superheaters 139
Losses in (see Heat balance) 259
Testing 267
Test _vs._ operating 278
Variation in, with capacity 284
With coal 288
With oil 224
Ellison draft gauge 254
Engine, Hero's 13
Engines, superheated steam with 141
Equivalent evaporation from and at 212 degrees 116
Eve's boiler 24
Evolution of Babcock & Wilcox boiler 39
Exhaust steam from auxiliaries 113
Expansion, coefficient of 87
Of fire brick 303
Of pipe 315
Pyrometer 89
Factor of evaporation 117
Fahrenheit thermometer scale 79
Fans, use of, in waste heat work 233
Feed water, air in 106
As affecting capacity 279
Boiler 100
Feed water heaters, closed 111
Economizers 111
Open 111
Feed water heating, methods of 111
Saving by 110
Feed water, impurities in 100
Lines 312
Method of feeding 110
Feed water treatment