Inhaltsangabe
Excerpt from The Steam-Engine and Other Steam-Motors, Vol. 1 of 2: A Text-Book for Engineering Colleges and a Treatise for Engineers; The Thermodynamics and the Mechanics of the Engine
This work is mainly descriptive and analytical, developing and illustrating principles and establishing methods for solving the various problems which arise in connection with the working of the engine. The writer has planned a subsequent treatise, on the Performance and Design of the Engine: this will take up the quantitative and synthetical side of the subject, giving the digested results of a large number of tests, now available in works of ref er ence; setting forth methods of engine-testing; and developing, as far as practicable, a logical scheme of design, especially of the thermodynamic design of the engine. This is several times te ferred to, in the text, as Part II. (of a complete treatise).
It will at once appear that the ground here covered is more extensive than is desirable for many courses of study: but the arrangement of matter is such as to facilitate selection and omis sion. Without attempting to map out a course in detail, it may be well to remark that certain very special discussions, as 6 (k), 13 (d), and the greater part of 527, are clearly indicated for omission. A good elementary class-room course would include, in Vol. I., 1 to 17, or all of Chapters I., II., and III., with minor omissions, in Chapter IV., 18, 19, 20 through (h), part of 21, 22, and some of 23 - the rest of this chapter belonging to the experimental course and forming an introduction to'part II. 24, and as much of the rest of Chapter V. As time permits, with em phasis on 5 29; in Chapter VII., 32, 33 through (c), 34 (b), 35 as desired, 36 (a), 39, 40 (a). A strong course in the mechanics of the engine would use practically all of this chapter - such a course to be largely carried out through graphical work in the drafting-room.
Certain original features in this volume are, the formula for cylinder-condensation in 21, the curves and tables for the steam jet in Chapter V., and the full development of the radial analysis for shaking-force in 40. In regard to the chapter on mechanics, the writer would acknowledge his indebtedness to Professor J. F. Klein, many of the methods there set forth being based upon those in Notes on the Design of a High-speed Engine, or devel oped in connection with the long-continued use of that book.
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