Bulletin of the United States Geological SurveyThe Survey., 1906 |
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Air-drying loss Average B. T. U. gas Average electrical horsepower B. T. U. per pound Bituminous coal boiler developed brake horsepower Breeze produced briquettes British thermal units Calorific value determined car sample Carbon monoxide cent CHEMICAL ANALYSES Coal as fired Coal charged Coke produced coking tests cubic foot Developed at engine Developed at switch Duration of test Efficiency of boiler electrical horsepower hour Equivalent water evaporated evaporated per pound evaporated per square Figured from car finely crushed Fixed carbon Force of draft horsepower of boiler Illinois inch to inch including grate indicated horsepower hour Kind of grate Laboratory number lignite Moisture Ohio Oxygen peat Percentage of rated pound dry coal pound of coal producer-gas test Proximate Raw coal shipped Size as shipped square foot stack damper steaming tests Sulphur surface per hour switch board Total coal fired Total percentage yield Volatile matter Washed coal Water apparently evaporated West Virginia
Beliebte Passagen
Seite 225 - 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.
Seite i - Bulletins, and Water-Supply Papers treat of a variety of subjects, and the total number issued is large. They have therefore been classified into the following series: A, Economic geology; B, Descriptive geology; C, Systematic geology and paleontology; D, Petrography and mineralogy; E, Chemistry and physics; F, Geography; G, Miscellaneous...
Seite 138 - Water apparently evaporated per pound of coal as fired pounds. Water evaporated from and at 212° F.: Per pound of coal as fired : do...
Seite 5 - States, such as stone, clays, cement, and so forth, under the supervision of the Director of the United States Geological Survey, to be immediately available, one hundred thousand dollars.
Seite iii - Price 15 cents. 32. Lists and Analyses of the Mineral Springs of the United States ; a Preliminary Study, by Albert C.
Seite 37 - The results of the majority of the tests have been exceedingly gratifying, official records having been made as low as 0.95 pound of dry coal per hour burned in the producer per electrical horsepower developed at the switchboard, or 0.80 pound of dry coal per hour burned in the producer per brake horsepower, on the basis of an assumed efficiency of 85 per cent for generator and belt. Throughout the tests a constant effort has been made to do away with unnecessary appliances. This effort has furnished...
Seite 55 - Dry fuel 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 fuel as fired pounds Water evaporated from and at 212° F.
Seite 37 - December 31, 1905, have been far superior to those that were possible during the Exposition period of 1904, and the results presented in this report have been subjected to refinements that were not attainable in the previous operation of the plant. A comparison of these figures with those obtained during 1904, published in Bulletin No. 261 (1905) and Professional Paper No. 48 (1906) of the United States Geological Survey, will show the general increase in efficiency of manipulation due to the improved...
Seite 134 - ... operation for fifty hours, and no difficulty whatever was experienced either in maintaining the load or in handling the fuel bed. The peat was furnished by the Orlando Water and Light Company and was secured from a bog near the city of Orlando, Orange County, Florida.
Seite 167 - ... 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.