A Manual of Steam-boilers: Their Design, Construction, and Operation ...J. Wiley & Sons, 1896 - 881 Seiten |
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Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
amount anthracite anthracite coal atmosphere bituminous coal boiling-point British British thermal units burned calculated calorimeter carbonic acid cause cent chemical chimney coke condensation construction cubic cubic foot cylindrical determined diameter draught ductility effect efficiency elastic limit energy engineer equal equivalent evaporation experiments explosion factor of safety Fahr feed-water feet fire firebox flue fuel furnace gases given grate heat-energy heating-surface horse-power hydrogen increase iron kilogrammes latent heat latter less liquid locomotive marine boilers mass maximum measured metal method nearly obtained oxygen plate pounds per square pressure produced products of combustion proportion quantity of heat ratio resistance rivets safety-valve seams secure sensible heat sheet shell sometimes specific heat square foot square inch steam steam-boiler steam-engine steam-pressure steel strength stress surface taken temperature tenacity thermal units thickness tion total heat tubes tubular boiler usually valve volume
Beliebte Passagen
Seite 212 - calorie," as it was called by the French philosophers who first adopted the metric system, is that quantity of heat which is required to raise the temperature of one kilogramme of water one degree centigrade, — the
Seite 492 - In preparing for and conducting trials of steamboilers, the specific object of the proposed trial should be clearly defined and steadily kept in view. II. Measure and record the dimensions, position, etc., of grate and heating surfaces, flues and chimneys, proportion of air space in the grate surface, kind of draught, natural or forced.
Seite 496 - When very good coal is used and the combustion not 'too rapid, a ten-hour test may be run without any cleaning of the grates, other than just before the beginning and just before the end of the test. But in case the grates have to be cleaned during the test, the intervals between one cleaning and another should be uniform.
Seite 540 - Airy, a cubic foot of heated water, under a pressure of 60 or 70 pounds per square inch, has about the same energy as one pound of gunpowder. The gunpowder exploded has energy sufficient to raise its own weight to a height of nearly 50 miles ; while the water has enough to raise its weight about one-sixtieth that height.
Seite 496 - 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 not necessary in tests for commercial purposes. These are the measurement of the air-supply, the determination of its contained moisture, the measurement and analysis of the...
Seite 239 - That the quantity of heat produced by the friction of bodies, whether solid or liquid, is always proportional to the quantity of force expended.
Seite 881 - OF THE PUBLICATIONS OF JOHN WILEY & SONS NEW YORK LONDON: CHAPMAN & HALL, LIMITED ARRANGED UNDER SUBJECTS Descriptive circulars sent on application. Books marked with an asterisk (*) are sold at net prices only. All books are bound in cloth unless otherwise stated.
Seite 811 - Galvanic Action. — Examine frequently parts in contact with copper or brass, where water is present, for signs of corrosion. If water is salt or acid, some metallic zinc placed in the boiler will usually prevent corrosion, but it will need attention and renewal from time to time.
Seite 804 - Fahrenheit.) 5. Deposition of magnesia, because magnesium salts decompose at high temperature. 6. Deposition of lime soap, iron soap, etc., formed by saponification of grease.
Seite 494 - The water-level should be as nearly as possible the same as at the beginning of the test. If it is not the same, a correction should be made by computation, and not by operating pump after test is completed. It will generally be necessary to regulate the discharge of steam from the boiler tested by means of the...