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RESEARCH PAPERS: Gas Turbines: Electric Utilities

Models for Predicting the Performance of Brayton-Cycle Engines

[+] Author and Article Information
T. Korakianitis

Washington University, St. Louis, MO 63130

D. G. Wilson

Massachusetts Institute of Technology, Cambridge, MA 02139

J. Eng. Gas Turbines Power 116(2), 381-388 (Apr 01, 1994) (8 pages) doi:10.1115/1.2906831 History: Received February 27, 1992; Revised February 23, 1994; Online April 24, 2008

Abstract

Gas turbine performance is the result of choices of type of cycle, cycle temperature ratio, pressure ratio, cooling flows, and component losses. The output is usually given as efficiency (thermal, propulsive, specific thrust, overall efficiency) versus specific power. This paper presents a set of computer programs for the performance prediction of shaft-power and jet-propulsion cycles: simple, regenerative, intercooled-regenerative, turbojet, and turbofan. Each cycle is constructed using individual component modules. Realistic assumptions are specified for component efficiencies as functions of pressure ratio, cooling mass-flow rate as a function of cooling technology levels, and various other cycle losses. The programs can be used to predict design point and off-design point operation using appropriate component efficiencies. The effects of various cycle choices on overall performance are discussed.

Copyright © 1994 by The American Society of Mechanical Engineers
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