Experimental EngineeringU.S. naval institute, 1911 - 311 Seiten |
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adjusted apparatus atmosphere beam boiler bomb calculated calibrated calorimeter cement chamber circle clamp CO₂ coal coefficient combustion condenser connected constant constructed curve cylinder determined diagram dial difference disc elastic limit engine entropy Explain extensometer fire room flash point friction fuel gage gases gear gives graduated heating value horse power inches of mercury indicator instrument to zero latent heat lever line sketch load logarithmic logarithmic scale lubricating manometer mean effective pressure measured mercury meter method Move runner observations obtained operation orifice oxygen percentage pipe piston Pitot tube placed pointer pounds pyrometer quantity rate of flow record revolutions per minute rotation sample scale screw shaft shown in Fig shows slide rule specimen speed square inch steam superheat testing machine thermometer throttle tion torsion torsionmeter transmitted tube valve velocity vertical vessel weight weir wheel wire
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Seite 208 - A third pat is exposed in any convenient way in an atmosphere of steam, above boiling water, in a loosely closed vessel for five hours.
Seite 208 - Pats of neat cement about three inches in diameter, one-half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four hours. (a) A pat is then kept in air at normal temperature and observed at intervals for at least 28 days. (6) Another pat is kept in water maintained as near 70° F.
Seite 207 - Great care should be exercised to maintain the test pieces under as uniform conditions as possible. A sudden change or wide range of temperature in the room in which the tests are made, a very dry or humid atmosphere, and other irregularities vitally affect the rate of setting.
Seite 182 - HP transmitted can be readily calculated. With the arrangement described, a reflection will be received from each mirror at every half revolution of the shaft; but where the torque varies during a revolution (as with reciprocating engines), a second system of mirrors may be arranged at right angles to the first system, so that four readings can be taken during one revolution ; or, if two scales are used, eight readings can be taken.
Seite 182 - ... as required. If the position of the apparatus becomes altered relatively to the scale owing to the warming up of the shaft or from other causes, this is indicated immediately to the observer by an alteration in the position of the zero as reflected by the fixed mirror. Hence, the zero can be adjusted by moving the scale so that its zero coincides with the reflection from the fixed mirror. It will be obvious that it is not necessary to move the scale, as the mean of the two readings will be the...
Seite 182 - Fig. 105 shows how the beam of light reflected by the mirror when in its highest position passes through the upper part of the scale; while the second reflection will occur when the mirror is in the position occupied by the zero mirror, the beam of light passing through the lower part of the scale. The position of the torque mirror in Fig.
Seite 208 - The minimum requirements for tensile strength for briquettes one inch square in section shall be within the following limits, and shall show no retrogression in strength within the periods specified.
Seite 265 - Inspection. — Before acceptance the gasoline will be inspected. Samples of each lot will be taken at random. These samples immediately after drawing will be retained in a clean, absolutely tight, closed vessel and a sample for test taken from the mixture in this vessel directly into the test vessel.
Seite 86 - A British thermal unit (BTU) is the quantity of heat required to raise one pound of water one degree Fahrenheit.
Seite 259 - Fuel oil shall be a hydrocarbon oil of best quality, free from grit, acid, and fibrous or other foreign matter likely to clog or injure the burners or valves...