Steam Turbines: With an Appendix on Gas Turbines and the Future of Heat EnginesVan Nostrand, 1906 - 490 стор. |
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Загальні терміни та фрази
A₁ a₂ absolute according adiabatic angular velocity assume axial axis b₁ b₂ blades c₁ c₂ calculation center of gravity centrifugal force change of condition combustion compression condenser constant construction critical number critical velocity cross-section curve decrease deflection determined diameter disc eddy currents elastic engine English units entrance entropy equal equation expansion experiments formula French units friction guide wheel impulse turbine increase kilogram kinetic energy load loss m₁ mass meters moment of inertia nozzle number of revolutions occurs P₁ peripheral velocity pounds per square pressure quantity of heat radial ratio rotating wheel running light shaft shown in Fig square inch steam consumption steam turbine steam velocity stresses stuffing box Substituting superheat superheated T₁ T₂ temperature theoretical tion valve vibrations w₁ weight
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Сторінка vii - ... Morfill ("A Simplified Grammar of the Polish Language") elucidates the combination szcz, frequently to be met with, by the English expression "smasht china," where the italicised letters give the pronunciation. Lastly, family names terminating in take a instead of i when applied to women. April, 1888. PREFACE TO THE SECOND EDITION. The second edition differs from the first by little more than the correction of some misprints and a few additions. These latter are to be found among the Appendices....
Сторінка 444 - Thus, a line of force is a curve in the electric field, such that the tangent at every point is in the direction of the electric field at that point.
Сторінка 307 - The mixing of liquids with steam must give besides the loss due to shock, a poor performance in the blade channels, because the individual drops of the " rain of this mixture" must become separated from the steam mass on account of the sharp bending of its path.
Сторінка 63 - In such a case the pressure first follows the line of free expansion and then increases with more or less sudden leaps in a manner depending on the magnitude of the back pressure.
Сторінка 368 - If we differentiate the first of the above equations with respect to x, the second with respect to...
Сторінка 385 - As often as heat disappears, we must, from the laws of energy, find its equivalent quantity of energy in another form, for instance, as mechanical work.
Сторінка 405 - ... greatest possible extent non-reversible changes of condition. 3. Utilization of the heat given off, and the application of regenerators, where the kind of combustible and the li'O/'Jt processes permit, in so far as we can construct effective and commercially economical regenerators.
Сторінка 174 - Complete massbalance can be obtained in the case of rotation about a fixed axis by the addition of two suitable masses in the two otlterwisc arbitrary planes at right angles to this axis.
Сторінка ix - Europe; and there is no branch of machine design in which a complete knowledge of the theory involved is so necessary as in Turbine Design.
Сторінка 290 - A relatively low investment cost, (iii) A high efficiency at the design output. (iv) Flexibility, but at loss of efficiency. Pass-out condensing cycle (a) Principle The turbine is divided into a high pressure and a low pressure section, (see Fig. 21), the heating steam being extracted between these. The remainder of the steam after this extraction is expanded in the low pressure section of the turbine, operating as a normal condensing machine. The valve V% located between the extraction point and...