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24 hours 48 hours air pumps ashes beam boilers calorimeter cent City clearance coal burned coal consumed condenser contractors crank cubic feet cut-off discharge duty trial Engine counter feed pumps feed water feed-water feet per minute fly-wheel foot-pounds force main friction furnaces gallons gallons of water Gaskill Duplex Gaskill Horizontal Gaskill Water Power grate surface guarantee heater heating surface high-pressure cylinder Holly Manufacturing Company Holly Quadruplex indicated horse-power indicator cards indicator diagrams jackets L. P. cylinders Lockport low-pressure cylinders machinery Mean effective pressure measured Number of pounds number of revolutions piston speed plunger displacement pounds of coal pounds of steam pounds of water pounds per square pressure cylinders pump plungers pump valves revolutions per minute Saratoga Springs shaft square feet square inch steam cylinders stroke taken temperature of feed Total number tubes vacuum vacuum gauge valves water evaporated water pressure gauge water pumped weight weir
Page 161 - COMMERCIAL HORSE-POWER. 43. On basis of 30 Ibs. of water per hour evaporated from temperature of 100° F. into steam of 70 Ibs. gauge pressure (34 j Ibs. from and at 212°) HP 44. Horse-power, builders' rating, at square feet per horse-power HP 45.
Page 154 - Total number of pounds of water that would have been vaporized in the boiler, had It been supplied at the temperature of 100 degrees Fahrenheit, and vaporized under the atmospheric pressure...
Page 140 - Water evaporated from and at 212° F. per square foot of heating surface per hour Ibs. !i Per sq. ft. of grate surWater evaporated per hour | face Ibs from temperature of 100
Page 160 - Ibs. 33. Equivalent water evaporated per pound of combustible from and at 212° F Ibs. COMMERCIAL EVAPORATION. 34. Equivalent water evaporated per pound of dry coal with one-sixth refuse, at 70 Ibs. gauge pressure, from temperature of 100° F. = item 33 xO.7249 pounds Ibs RATE OF COMBUSTION.
Page 139 - ECONOMIC EVAPORATION. 31. Water actually evaporated per pound of dry coal, from actual pressure and temperature f Ibs. 32. Equivalent water evaporated per pound of dry coal from and at 212° Ff Ibs.
Page 261 - PM and 6.00 AM, when hourly cards were taken. Only the hourly cards have been worked up and used in this report, however. The quality of the steam was determined by means of a Barrus Universal Calorimeter attached to the throttle- valve case. This instrument was in operation only twice : once between 11.40 AM and 12.40 PM, and again between 6.00 and 7.00 PM In both cases the steam was found to be perfectly dry. The temperature of the discharge water from the condenser was taken from a thermometer...
Page 289 - The conditions of the producer in all respects should be as nearly as possible the same at the end of the test as at the beginning. The...