Experimental Engineering and Manual for Testing: For Engineers and for Students in Engineering Laboratories |
Contents
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Common terms and phrases
analysis apparatus average boiler brake calibration calorimeter carbon cent CO₂ coal coefficient combustion compression computed condensed connected constant correction cubic foot curve cylinder determined diagram diameter discharge dynamometer efficiency elastic limit engine equation error extensometer feet flow flue friction fuel gases gauge heating value horse power hour indicator indicator diagrams injector instrument intercooler jacket length liquid load loss machine manometer mean effective pressure means measured mechanical efficiency mercury meter method moisture motion nozzle obtained orifice P₁ pipe piston Pitot tube pounds pressure pump pyrometer quantity radiation ratio reading revolutions per minute sample saturated scale sensible heat shaft shown in Fig specific heat specimen spring square inch standard steam stroke superheat superheated supplied surface T₁ T₂ tank temperature test-piece thermometer tion tube turbine valve velocity volume water vapor weight wheel
Popular passages
Page 695 - The boiler being thoroughly heated by a preliminary run, the fires are to be burned low and well cleaned. Note the amount of coal left on the grate as nearly as it can be estimated; note the pressure of steam and the water level.
Page 693 - Water meters, as a rule, should only be used as a check on other measurements. For accurate work, the water should be weighed or measured in a tank. 3. Thermometers and pyrometers for taking temperatures of air, steam, feedwater, waste gases, etc. 4.
Page 165 - 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.
Page 163 - Care should be observed in centering the briquettes in the testing machine, as cross-strains, produced by improper centering, tend to lower the breaking strength. The load should not be applied too suddenly, as it may produce vibration, the shock from which often breaks the...
Page 164 - 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.
Page 164 - The cement shall be stored in such a manner as to permit easy access for proper inspection and identification of each shipment. 5. Every facility shall be provided by the contractor and a period of at least twelve days allowed for the inspection and necessary tests.
Page 696 - The calorunetei and the pipe leading to it should be well covered with felting. Whenever the indications of the throttling or separating calorimeter show that the percentage of moisture is irregular, or occasionally in excess of...
Page 165 - 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 : Age. Neat Cement. . Strength. 24 hours in moist air 175 Ibs.
Page 696 - ... of the temperature of the furnace when a furnace pyrometer is used, also of the pressure of steam, and of the readings of the instruments for determining the moisture in the steam. A log should be kept on properly prepared blanks containing columns for record of the various observations. When the
Page 160 - Section 37, and quickly formed into a ball with the hands, completing the operation by tossing it six times from one hand to the other, maintained about 6 in.