Repowering: Reap the benefits of advanced technologies

Journal Article · Thu Jul 01 04:00:00 EDT 1993 · Power; (United States)

OSTI ID:5820184

Discussed for many years, repowering is now coming of age as utilities and NUGs maximize the use of existing sites and major pieces of equipment/support systems. Several advanced repowering options--including IGCC and PFBC/CC--are discussed. Within the next few years, more than 3500 utility powerplants will have reached their 30th birthdays. A significant number of these facilities--more than 20 GW of capacity by some estimates--are candidates for repowering, an option that can cut emissions and boost plant efficiency, reliability, output, and service life. The term repowering describes several plant-revitalization schemes. This report concentrates on the most common repowering options demonstrated or now being considered by US utilities--those where the original steam generator is replaced by either: (1) a gas turbine/generator and heat-recovery steam generator (HRSG), (2) an atmospheric fluidized-bed boiler (AFB), (3) a coal-gasification combined-cycle (CGCC) process, or (4) a pressurized fluidized-bed combined-cycle (PFBC-CC) system. Other options, such as a gas turbine exhausting into the boiler, are also briefly reviewed. Another repowering strategy, the addition of a steam bottoming cycle to a gas turbine, is not discussed here.

• OSTI ID: 5820184
• Journal Information: Power; (United States), Journal Name: Power; (United States) Vol. 137:7; ISSN 0032-5929; ISSN POWEAD
• Country of Publication: United States
• Language: English

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