Effects of New International Formulation on Turbine-Generator Performance Calculations

[+] Author and Article Information
K. C. Cotton

Large Steam Turbine-Generator Department, General Electric Co., Schenectady, N. Y.

N. R. Deming

Westinghouse Electric Co., Philadelphia, Pa.

E. H. Garbinski

The Detroit Edison Co., Detroit, Mich.

J. Eng. Power 90(1), 15-20 (Jan 01, 1968) (6 pages) doi:10.1115/1.3609127 History: Received July 13, 1967; Online August 25, 2011


For the pressure-temperature range of steam turbine operation the new International Formulation properties differ from those in Keenan and Keyes Steam Tables primarily in the values of enthalpy and entropy around 1000 deg F. The deviation is significant at pressures above 2400 psi and diminishes as temperature is both increased and decreased. This paper presents the effect of this deviation in steam properties on steam turbine-generator heat rate and high pressure turbine efficiency. Some test data is presented which indicates the new Formulation is more correct at 1000 deg F.

Copyright © 1968 by ASME
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