Motive Powers and Their Practical SelectionLongmans, Green, and Company, 1894 - 257 páginas |
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Página 13
... pressure steam , it nevertheless con- tains a large part of the heat imparted to it , and the steam- engine becomes a part of a very economical combined ap- paratus for power and evaporation . Further inquiry elicits another factor in ...
... pressure steam , it nevertheless con- tains a large part of the heat imparted to it , and the steam- engine becomes a part of a very economical combined ap- paratus for power and evaporation . Further inquiry elicits another factor in ...
Página 15
... pressure of a given amount , but a distance over which either is exercised for a given period . Morin established , as a unit of power , the labour of a strong man , which he found to be equal to the lifting of a weight of 50 lbs . to a ...
... pressure of a given amount , but a distance over which either is exercised for a given period . Morin established , as a unit of power , the labour of a strong man , which he found to be equal to the lifting of a weight of 50 lbs . to a ...
Página 16
... pressure varies , it becomes for all , except those suited to 70 pounds pressure , a merely theoretical basis . It does not , therefore , possess sufficient merit as a term to warrant expectation of world - wide adoption , and for en ...
... pressure varies , it becomes for all , except those suited to 70 pounds pressure , a merely theoretical basis . It does not , therefore , possess sufficient merit as a term to warrant expectation of world - wide adoption , and for en ...
Página 18
... pressure , and is practically applied to the electric current as pressure per square inch is by engineers to steam . It is also known as electro - motive force ; frequently written E. M. F. for con- venience , also potential , and is ...
... pressure , and is practically applied to the electric current as pressure per square inch is by engineers to steam . It is also known as electro - motive force ; frequently written E. M. F. for con- venience , also potential , and is ...
Página 20
... pressure of about 15 lbs . , which for intermittent work may be increased towards 25 lbs . The speed at which a man will turn a crank is from 26 to 30 revolutions per minute . Man Labour . The labour of one man is just SECTION II ...
... pressure of about 15 lbs . , which for intermittent work may be increased towards 25 lbs . The speed at which a man will turn a crank is from 26 to 30 revolutions per minute . Man Labour . The labour of one man is just SECTION II ...
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Términos y frases comunes
50 feet adopted amount ampères apparatus arranged average belt calculation cast-iron cent CHAPTER chimney coal compound engine condensation Cornish boilers cost crank cubic feet cubic foot cylinder Diam driving dynamo economy effective horse-power electric equal evaporated exhaust steam fall feed-water feet per minute flues fuel furnace gas-engine gine given grate area Heads in Feet heating surface HORIZONTAL ENGINES Horse horse-power per hour imperial gallons inch diameter indicated horse-power iron lamp Lancashire Lancashire boilers length Load machine machinery mill motive power motor nominal horse-power oil-engine Pelton Wheel pipes piston plates portable portable engines pounds practical proportions pump purposes quantity of water Revolutions per Minute shaft single-cylinder sizes space speed square feet square foot square inch steam-engine Stroke suited supply temperature thickness tubes turbine valve vary velocity vertical engine volts water-wheels Watts weight wheel Width wind windmill ΙΟ
Pasajes populares
Página 257 - ON THE DEVELOPMENT AND TRANSMISSION OF POWER FROM CENTRAL STATIONS. Being the Howard Lectures delivered at the Society of Arts in 1893. By WILLIAM CAWTHORNE UNWIN,
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Página 180 - 30 tons per square inch, with an elongation of not less than 20 per cent, in a test