The Ventilation of Coal MinesD. Van Nostrand Company, 1889 - 126 páginas |
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Página 12
... decimals of a pound avoirdupois , at differ- ent temperatures , calculated from the formula W = 1.32529X30 ___ 39.7587 459 + t 459 + t ture t . Tempera- in decimals Weight Tempera- in decimals Weight ture t . of a lb. of a lb. 32 ...
... decimals of a pound avoirdupois , at differ- ent temperatures , calculated from the formula W = 1.32529X30 ___ 39.7587 459 + t 459 + t ture t . Tempera- in decimals Weight Tempera- in decimals Weight ture t . of a lb. of a lb. 32 ...
Página 13
... decimals . With air and water at a tem- perature of 62 ° , the following rules will apply for converting the pressure into different terms : Water gauge in inches × 5.196 = pounds per square foot . Pounds per square foot divided by ...
... decimals . With air and water at a tem- perature of 62 ° , the following rules will apply for converting the pressure into different terms : Water gauge in inches × 5.196 = pounds per square foot . Pounds per square foot divided by ...
Página 15
... decimals of an inch at the following temperatures . 1.32529 × 30 C = × B 459 + t 5.196 .005 .005 .005 .004 .291 .284 TABLE showing the comparative height of water gauge and air. TABLE SHOWING THE AMOUNT OF MOTIVE COLUMN OF AIR AND INCHES ...
... decimals of an inch at the following temperatures . 1.32529 × 30 C = × B 459 + t 5.196 .005 .005 .005 .004 .291 .284 TABLE showing the comparative height of water gauge and air. TABLE SHOWING THE AMOUNT OF MOTIVE COLUMN OF AIR AND INCHES ...
Página 17
... decimal portion only being required to produce the veloc- ity , the water gauge due to final velocity being found thus : 302 64.4 1.32529 30 459 + t 5.196 The table given on page 16 has been prepared to show the height of water gauge ...
... decimal portion only being required to produce the veloc- ity , the water gauge due to final velocity being found thus : 302 64.4 1.32529 30 459 + t 5.196 The table given on page 16 has been prepared to show the height of water gauge ...
Página 4
... Decimal System , with Tabies of Conversion for Commer cial and Scientific Uses . Square 32m0 , limp cloth ..... CRAIG ( Prof. THOS . ) Elements of the Mathematical Theory of Fluid Motion . 16mo , cloth .... DAVIS ( C. B. ) and RAE ...
... Decimal System , with Tabies of Conversion for Commer cial and Scientific Uses . Square 32m0 , limp cloth ..... CRAIG ( Prof. THOS . ) Elements of the Mathematical Theory of Fluid Motion . 16mo , cloth .... DAVIS ( C. B. ) and RAE ...
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Términos y frases comunes
according air passing airways André application blowers calculation carbonic acid circulate cloth coal mines collieries combustion Construction cube root cubic feet cubic foot decimals Degs diagrams diameter difference dimensions downcast Engineers engravings equal splits explosion factor of safety feet of air feet per minute final velocity fire damp Folding Plates formula gases Graphical Statics heated Hypsometry illus inches intake ksv² length mechanical Mechanical ventilation morocco motive column multiplied numerous obtained perimeter plenum system Plympton pounds per square power required Practical Treatise pressure required Prof proportion quantity of air quantity passing relative pressures required to pass resistance result return air return passages revised and enlarged rubbing surface Rules Second edition sectional area specific gravity splitting the air square foot square root Steam-Engine system of ventilation temperature Third edition tion ture typical road unequal splitting upcast shaft ventilating pressure VENTILATION OF COAL water gauge
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