ASME Transactions, Volume 37The Society, 1916 - Mechanical engineering |
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Common terms and phrases
abrasive amount apparatus axles bearing boiler brake building carborundum cast iron cement cent coefficient coefficient of friction compression concrete condenser connecting rod connection constant copper cost curve cylinder DEGREE TEMPERATURE diameter Diesel engine disc effect efficiency elastic limit electric equation Exposition factor fahr flow friction fuel gear high pressure increase installed INVOLUTE GEARS kw-hr live steam load locomotive loss lubricant machine manufacturing material MECHANICAL ENGINEERS meter method mill Milligrams motor obtained operation orifice Palace of Machinery paper pipe plant plate practice pump quantity ratio resistance rods safety shaft shown in Fig shows Society speed standard steam pressures steel stoneware superheat surface surface condenser Table teeth temperature difference tests thickness tion truck tube turbine unit valve vaporizer velocity viscosity weight wheel worm gear
Popular passages
Page 1306 - The conditions of the boiler and furnace in all respects should be, as nearly as possible, the same at the end as at the beginning of the test. The steam pressure should be the same, the water level the same, the fire upon the grates should be the same in quantity and condition, and the walls, flues, etc., should be of the same temperature.
Page 1302 - IV. Determine the character of the coal to be used. For tests of the efficiency or capacity of the boiler for comparison with other boilers the coal should, if possible, be of some kind which is commercially regarded as a standard. For New England and that portion of the country east of the Allegheny Mountains...
Page 1307 - The ash pits should be thoroughly cleaned at once after starting. Before the end of the test the fires should be burned low, just as before the start, and the fires cleaned in such a manner as to leave the same amount of fire, and in the same condition, on the grates as at the start. The...
Page 1309 - SMOKE OBSERVATIONS. In tests of bituminous coals requiring a determination of the amount of smoke produced, observations should be made regularly throughout the trial at intervals of five minutes (or if necessary every minute), noting at the same time the furnace and firing conditions.
Page 1351 - ASHES AND REFUSE The ashes and refuse withdrawn from the furnace and ashpit during the progress of the test and at its close should be weighed so far as possible in a dry state. If wet the amount of moisture should be ascertained and allowed for, a sample being taken and dried for this purpose. This sample may serve also for analysis and the determination of unburned carbon and fusing temperature.
Page 825 - The materials should be mixed wet enough to produce a concrete of such a consistency as will flow into the forms and about the metal reinforcement, and which, at the same time, can be conveyed from the mixer to the forms without separation of the coarse aggregate from the mortar.
Page 14 - The American Society of Mechanical Engineers and is administered by a Board of Award consisting of representatives of the American Society of Civil Engineers, the American Institute of Mining and Metallurgical Engineers, The American Society of Mechanical Engineers, and the American Institute of Electrical Engineers.
Page 1275 - OBJECT Ascertain the specific object of the test, and keep this in view not only in the work of preparation, but also during the progress of the test, and do not let it be obscured by devoting too close attention to matters of minor importance. Whatever the object of the test may be, accuracy and reliability must underlie the work from beginning to end.
Page 1349 - Operating conditions. — Determine what the operating conditions should be to conform to the object in view, and see that they prevail throughout the trial. Duration. — The test of a gas or oil engine with substantially constant load should be continued for such time as may be necessary to obtain a number of successive records 1 Extracts from ASME Code of testa.
Page 1282 - If this instrument is used, assurance must be had that it is properly graduated with reference to the ever varying zero point; that the mercury is pure, and that the proper correction is made for any difference of temperature that exists, compared with the temperature at which the instrument was graduated. For...