196 



APPENDIX. 



Calorific Value of Fuel. 



46. Calorific value by oxygen calorimeter, per pound of dry 



coal B. T. U. 



47. Calorific value by oxygen calorimeter, per pound of com- 



bustible " " 



48. Calorific value by analysis, per Ib. of dry coal* 



49. Calorific value by analysis, per pound of combustible 



Quality of Steam. 



50. Percentage of moisture in steam per cent. 



51. Number of degrees of superheating deg. 



52. Quality of steam (dry steam = unity) 



53. Factor of correction for quality of steam (page 119) 



Water. 



54. Total weight of water fed to boiler , Ibs. 



55. Water actually evaporated, corrected for quality of steam 



56. Equivalent water evaporated into dry steam from and at 



degrees 



Water per Hour. 



57. Water evaporated per hour, corrected for quality of steam 



58. Equivalent evaporation per hour from and at 212 degrees. 



59. Equivalent evaporation per hour from and at 212 degrees 



per square foot of water-heating surface 



Horse-power. 



60. Horse-power developed. (34^ Ibs. of water evaporated 



per hour into dry steam from and at 212 degrees, equals 



one horse-power)f H. P. 



61. Builders' rated horse power 



62. Percentage of builders' rated horse-power developed per cent. 



Economic Results. 



63. Water apparently evaporated per Ib. of coal under actual 



conditions. (Item 54 -f- Item 23) Ibs. 



64. Equivalent evaporation from and at 212 degrees per Ib. of 



coal (including moisture) 



65. Equivalent evaporation from and at 212 degrees per Ib. of 



dry coal 



66. Equivalent evaporation from and at 212 degrees per Ib. of 



combustible 



* See formula for calorific value under Article XVI of Code. 



t Held to be the equivalent of 30 Ibs. of water per hour evaporated from 100 degrees Fahr 

 into dry steam at 70 Ibs. gauge-pressure (See Introduction to Code ) 



