A Treatise on Practical and Theoretical Mine VentilationJ. Wiley & Sons, 1904 - 141 sivua |
Kirjan sisältä
Tulokset 1 - 4 kokonaismäärästä 4
Sivu 100
... number of revolutions per minute , a equals constant proportional to the number of linear feet traversed by the air in a revolution , and u repre sents the losses due to friction . For the anemometer generally used in Pennsylvania , the ...
... number of revolutions per minute , a equals constant proportional to the number of linear feet traversed by the air in a revolution , and u repre sents the losses due to friction . For the anemometer generally used in Pennsylvania , the ...
Sivu 112
... number of revolutions per minute , the quantity of air produced should be the same per revolution at any speed where the conditions . are unchanged , for the volume of air varies as the square root of the water - gauge ; i.e. , the ...
... number of revolutions per minute , the quantity of air produced should be the same per revolution at any speed where the conditions . are unchanged , for the volume of air varies as the square root of the water - gauge ; i.e. , the ...
Sivu 113
... quantity of air increases in proportion to the speed of the fan . 2d , The water - gauge increases proportionately to the square of the number of revolutions of the fan . 3d , The horse - power in the air increases as the cube of the ...
... quantity of air increases in proportion to the speed of the fan . 2d , The water - gauge increases proportionately to the square of the number of revolutions of the fan . 3d , The horse - power in the air increases as the cube of the ...
Sivu 114
... revolution of the fan to be 1,778 cubic feet , then , at 25 revolutions per minute , the number of cubic feet pass- ing will be 25 × 1778 = 44450 cubic feet . This does not always hold good when the number of revolutions are greatly ...
... revolution of the fan to be 1,778 cubic feet , then , at 25 revolutions per minute , the number of cubic feet pass- ing will be 25 × 1778 = 44450 cubic feet . This does not always hold good when the number of revolutions are greatly ...
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Yleiset termit ja lausekkeet
100 cubic feet air circulating air gave air in mines air passing air-column air-course air-current airway amount anemometer asphyxia atmosphere barometer brattice carbonic acid Clanny coal coal-dust Colliery column cubic foot cubic inches Davy Davy lamp diameter discharge districts double downcast drifts Engineering equal explosion feet of air feet per minute feet square fire-damp flame formula furnace gallery gases gauze hence horse-power inches of mercury inches water-gauge increased inflammable ksv2 length Manual marsh-gas measured mechanical ventilators Mechanics mercury method miners morocco motive-column Mueseler lamp multiplied number of revolutions oxygen perimeter piston pounds per square pressure per square pressure required proportional quan quantity of air regulators resistance revolutions per minute rubbing-surface safety-lamp sectional area shaft shutter smaller airway splitting square feet square foot Suppose temperature Text-book tion tity total pressure Treatise tube upcast velocity ventilating pressure volume of air water-gauge
Suositut otteet
Sivu 149 - Manual of Elementary Problems in the Linear Perspective of Form and Shadow T 2iIi0, i oo Plane Problems in Elementary Geometry I2mo, i 23 Primary Geometry i2mo, 75 Elements of Descriptive Geometry, Shadows, and Perspective 8vo, 3 50 General Problems of Shades and Shadows 8vo, 3 oo Elements of Machine Construction and Drawing 8vo, 7 so Problems, Theorems, and Examples in Descriptive Geometry 8vo. 2 50 Weisbach's Kinematics and the Power of Transmission.
Sivu 147 - Fuertes's Water and Public Health 12mo, 1 50 Water-filtration Works 12mo. 2 50 Ganguillet and Kutter's General Formula for the Uniform Flow of Water in Rivers and Other Channels.
Sivu 143 - Blowpipe. i2mo, morocco, i 50 Furman's Manual of Practical Assaying 8vo, 3 oo Lodge's Notes on Assaying and Metallurgical Laboratory Experiments .... 8vo, 3 oo Miller's Manual of Assaying i2mo, i oo O'Driscoll's Notes on the Treatment of Gold Ores 8vo, 2 oo Ricketts and Miller's Notes on Assaying 8vo, 3 oo "Dike's Modern Electrolytic Copper Refining.