Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 240
arlier cut off. The speed of the engine was94 R. P. M., with a boiler pressure of 70 lbs. A 40spring was used with the indicator. In order to more fully illustrate the process of ascer-taining the M. E. P. without dividing the diagram intoordinates, the following computation is given togetherwith… … figure 74. scale adapted to the spring used. Thus, in Fig. 74 theabsolute initial pressure measured from the line ofperfect vacuum V to line B is jy lbs., and the absoluteterminal pressure measured from V to line B is 21 lbs.The ratio, or number of expansions, is found thus: Rule. Divide the…
