Repowering Application Considerations

[+] Author and Article Information
J. A. Brander

GE Industrial and Power Systems, Schenectady, NY 12345

D. L. Chase

Combined Cycle Technology, GE Industrial and Power Systems, Schenectady, NY 12345

J. Eng. Gas Turbines Power 114(4), 643-652 (Oct 01, 1992) (10 pages) doi:10.1115/1.2906637 History: Received March 04, 1991; Online April 24, 2008


As utilities plan for load growth in the 1990s, they are faced with the difficulty of choosing the most economic generation while subject to a number of challenging constraints. These constraints include environmental regulations, particularly the new Clean Air Act, risk aversion, fuel availability and costs, etc. One of the options open to many utilities with existing steam units is repowering, which involves the installation of gas turbine(s) and heat recovery steam generator(s) (HRSG) to convert the steam plant to combined-cycle operation. This paper takes an overall look at the application considerations involved in the use of this generating option, beginning with a summary of the size ranges of existing steam turbines that can be repowered using the GE gas turbine product line. Other topics covered include performance estimates for repowered cycles, current emissions capabilities of GE gas turbines, approximate space requirements and repowering economics.

Copyright © 1992 by The American Society of Mechanical Engineers
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