The Theories and Practice of Centrifugal Ventilating MachinesE. & F. N. Spon, 1883 - 81 sider |
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Side viii
... increases . To calculate the area of this orifice of passage we must refer to its value in the equation- or , Hhh , M V2 , h 。= = V2 0.622 02 2 g That is to say , after finding for any ventilation the value of the initial and effective ...
... increases . To calculate the area of this orifice of passage we must refer to its value in the equation- or , Hhh , M V2 , h 。= = V2 0.622 02 2 g That is to say , after finding for any ventilation the value of the initial and effective ...
Side ix
... increases . Taking , say Nos . 1 and 2 experiments on the Créal fan , with the square of the volume and depression observed , we get- xy ( 89,283 ) = 1 · 0598 , xy ( 195,766 ) = 1.0183 , and from these constants are found . The average ...
... increases . Taking , say Nos . 1 and 2 experiments on the Créal fan , with the square of the volume and depression observed , we get- xy ( 89,283 ) = 1 · 0598 , xy ( 195,766 ) = 1.0183 , and from these constants are found . The average ...
Side 3
... increase at will . If we suppose at first the equi- valent orifice equal to zero , that is to say , that the mine is completely shut off , the ventilator will produce in a confined space adjoining the ouïe or inlet a certain depression ...
... increase at will . If we suppose at first the equi- valent orifice equal to zero , that is to say , that the mine is completely shut off , the ventilator will produce in a confined space adjoining the ouïe or inlet a certain depression ...
Side 4
... increase in proportion to the volume of air yielded , and absorb an increasing fraction of the initial depression . Those who have occupied themselves in studying this theory have generally sought to determine by calculation these ...
... increase in proportion to the volume of air yielded , and absorb an increasing fraction of the initial depression . Those who have occupied themselves in studying this theory have generally sought to determine by calculation these ...
Side 12
... increase of pressure from the ouïe to the exterior circumference . If I isolate in imagination a pris- matic element of the air drawn in , placed at a distance a from the centre and presenting a height da in the direction of the radius ...
... increase of pressure from the ouïe to the exterior circumference . If I isolate in imagination a pris- matic element of the air drawn in , placed at a distance a from the centre and presenting a height da in the direction of the radius ...
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The Theories and Practice of Centrifugal Ventilating Machines Daniel Murgue Uten tilgangsbegrensning - 1883 |
The Theories and Practice of Centrifugal Ventilating Machines Daniel Murgue Uten tilgangsbegrensning - 1883 |
The Theories And Practice Of Centrifugal Ventilating Machines, Tr. And With ... Daniel Murgue Ingen forhåndsvisning tilgjengelig - 2019 |
Vanlige uttrykk og setninger
abscissæ applied Assoc Bessèges Cabany calculation centrifugal force cloth Coal Gas Colliery Commission of Gard Construction covered ventilators Crachet and Picquery Créal crown 8vo curve depression H deprimogen ventilator Devillez direct impulsion Ditto Ditto drawing effective depression equation equivalent orifice évasée chimney experiments expression exterior circumference Fcap figs formula Frameries frictions given Glepin Grand Hornu Guibal chimney Guibal ventilator helicoidal increase initial depression Inst Isometric Projection Jean Bart Lalle Lewis Thompson Machinery manometrical result manometrical yield Manufacture motive power Murgue observations obtain orifice of passage ouïe P. L. SIMMONDS passive resistances plates Practical Treatise proportion radius royal 32mo Second edition Shaft speed of rotation Spons square straight line Tables tangential speed theoretical depression Third edition THOMAS BOX Ventilation of Mines ventilator of Bessèges ventilators by direct ventilators with centrifugal vis viva volume of air volume yielded volumogen ventilator water gauge width
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