The Mechanical Engineer's Pocket-book: A Reference Book of Rules, Tables, Data, and Formulæ, for the Use of Engineers, Mechanics, and StudentsJ. Wiley & sons, 1902 - 1113 σελίδες |
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Σελίδα 27
... UNITS . Measures of Pressure and Weight . 1 lb. per square inch . = = 1 atmosphere ( 14.7 lbs . per sq . in ... Heat unit = heat required to raise 1 lb. of water 1 ° F. ( from 39 ° to 40 ° ) . Horse - power expressed in heat units ...
... UNITS . Measures of Pressure and Weight . 1 lb. per square inch . = = 1 atmosphere ( 14.7 lbs . per sq . in ... Heat unit = heat required to raise 1 lb. of water 1 ° F. ( from 39 ° to 40 ° ) . Horse - power expressed in heat units ...
Σελίδα 318
... heat of aluminum is higher than that of any other metal , excepting only magnesium and the alkali metals . From zero to the melting - point it is 0.2185 ; water being taken as 1 , and the latent heat of fusion at 28.5 heat units . The ...
... heat of aluminum is higher than that of any other metal , excepting only magnesium and the alkali metals . From zero to the melting - point it is 0.2185 ; water being taken as 1 , and the latent heat of fusion at 28.5 heat units . The ...
Σελίδα 455
... heated in contact with air ... units ; 1 B. T. U. = .252 calorie . The " pound calorie " is sometimes used by English writers ; it is the quan- tity of heat required to raise the temperature of 1 QUANTITATIVE MEASUREMENT OF HEAT . 455.
... heated in contact with air ... units ; 1 B. T. U. = .252 calorie . The " pound calorie " is sometimes used by English writers ; it is the quan- tity of heat required to raise the temperature of 1 QUANTITATIVE MEASUREMENT OF HEAT . 455.
Σελίδα 456
... heat required to raise the temperature of 1 lb. of water 1 ° C. 1 lb. calorie 9/5 B.T.U.0.4536 calorie . = The heat ... units . 1 horse - power = 33,000 ft . - lbs . per minute = 2545 heat - uuits per hour 42.416+ per minute = .70694 per ...
... heat required to raise the temperature of 1 lb. of water 1 ° C. 1 lb. calorie 9/5 B.T.U.0.4536 calorie . = The heat ... units . 1 horse - power = 33,000 ft . - lbs . per minute = 2545 heat - uuits per hour 42.416+ per minute = .70694 per ...
Σελίδα 457
... HEAT . Thermal Capacity . The thermal capacity of a body is the quantity of heat required to raise its temperature ... units lost by the hot body , and c ' × w ' × ( T- t ' ) = heat - units gained by the cold liquid . If there is no heat ...
... HEAT . Thermal Capacity . The thermal capacity of a body is the quantity of heat required to raise its temperature ... units lost by the hot body , and c ' × w ' × ( T- t ' ) = heat - units gained by the cold liquid . If there is no heat ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
alloy aluminum angle base beam bolt brass bricks carbon cast iron cent chord circle Circular Mils Circum circumference coefficient column compression compression member copper cubic cubic foot curve cylinder decimal Diam diameter Diff difference differential distance divide draw ductility elastic limit elongation Engineering equal equation factor of safety feet fibre Flange force formula frustum Gauge given half heat increase inertia length load logarithm manganese material maximum metal modulus moment of inertia multiply Neutral Axis perpendicular pipe plane plate pounds per square pressure proportional radius of gyration Recipro resistance rivets shearing side silicon sine solid specific gravity specimen square foot square inch standard steel strain strands stress subtract surface tangent temperature tensile strength tension tests thickness thread tons transverse triangle tubes velocity wrought iron zinc
Δημοφιλή αποσπάσματα
Σελίδα 688 - Notice the general condition of the boiler and its equipment and record such facts in relation thereto as bear upon the objects in view. If the object of the trial is to ascertain the maximum economy or capacity of the boiler as a steam generator, the boiler and all its appurtenances should be put in first-class condition.
Σελίδα 482 - CL are line pressure and sonic speed of the gas at £ -» — *, and y is the ratio of specific heat at constant pressure to specific heat at constant volume for the gas.
Σελίδα 396 - For the purposes of this specification, the yield point shall be determined by the careful observation of the drop of the beam or halt in the gauge of the testing machine.
Σελίδα xxxii - Multiply the numerators together for a new numerator, and the denominators together for a new denominator.
Σελίδα 414 - If any number of forces acting at a point can be represented in magnitude and direction by the sides of a POLYGON taken in order, they are in equilibrium.
Σελίδα 691 - The coal should be weighed and delivered to the firemen in equal portions, each sufficient for about one hour's run, and a fresh portion should not be delivered until the previous one has all been fired. The time required to consume each portion should be noted, the time being recorded at the instant of firing the first of each new portion.
Σελίδα 692 - In tests for purposes of scientific research, in which the determination of all the variables entering into the test is desired, certain observations should be made which are in general unnecessary for ordinary tests.
Σελίδα 66 - In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Σελίδα 691 - ... moisture in the steam should be determined by the use of either a throttling or a separating steam calorimeter. The sampling nozzle should be placed in the vertical steam pipe rising from the boiler. It should be made of...
Σελίδα 6 - ... and to the remainder bring down the next period for a dividend. 3. Place the double of the root already found, on the left hand of the dividend for a divisor. 4. Seek how often the divisor is contained...