Comparative Efficiencies of Central-Station Reheat and Nonreheat Steam-Turbine-Generator Units

The purpose of this paper is to provide information concerning the performance of large steam-turbine-generator units of modern design, for modern steam conditions and ratings, and to show something of the background of experience from which the information is derived. A similar exposition was made in 1940, along somewhat different lines, and with no particular information on the reheat machines, which have become very much more popular in the last few years. The present paper shows the amount of test information obtained on complete turbine-generator units since the Warren-Knowlton paper was written, and also by comparing test results with guaranteed figures, shows the efficacy of the general performance-calculation method herein given.